Ingress Tool Transfer, Technique T1105 - Enterprise | MITRE ATT&CK®
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Ingress Tool Transfer

Adversaries may transfer tools or other files from an external system into a compromised environment. Tools or files may be copied from an external adversary-controlled system to the victim network through the command and control channel or through alternate protocols such as ftp. Once present, adversaries may also transfer/spread tools between victim devices within a compromised environment (i.e. Lateral Tool Transfer).

On Windows, adversaries may use various utilities to download tools, such as copy, finger, certutil, and PowerShell commands such as IEX(New-Object Net.WebClient).downloadString() and Invoke-WebRequest. On Linux and macOS systems, a variety of utilities also exist, such as curl, scp, sftp, tftp, rsync, finger, and wget.[1]

Adversaries may also abuse installers and package managers, such as yum or winget, to download tools to victim hosts. Adversaries have also abused file application features, such as the Windows search-ms protocol handler, to deliver malicious files to victims through remote file searches invoked by User Execution (typically after interacting with Phishing lures).[2]

Files can also be transferred using various Web Services as well as native or otherwise present tools on the victim system.[3] In some cases, adversaries may be able to leverage services that sync between a web-based and an on-premises client, such as Dropbox or OneDrive, to transfer files onto victim systems. For example, by compromising a cloud account and logging into the service's web portal, an adversary may be able to trigger an automatic syncing process that transfers the file onto the victim's machine.[4]

ID: T1105
Sub-techniques:  No sub-techniques
ⓘ
Tactic: Command and Control
ⓘ
Platforms: Linux, Network, Windows, macOS
Contributors: Alain Homewood; Jeremy Hedges; Joe Wise; John Page (aka hyp3rlinx), ApparitionSec; Mark Wee; Selena Larson, @selenalarson; Shailesh Tiwary (Indian Army); The DFIR Report
Version: 2.4
Created: 31 May 2017
Last Modified: 11 April 2024
Version Permalink

Procedure Examples

ID Name Description
C0028 2015 Ukraine Electric Power Attack

During the 2015 Ukraine Electric Power Attack, Sandworm Team pushed additional malicious tools onto an infected system to steal user credentials, move laterally, and destroy data. [5]
S0469 ABK

ABK has the ability to download files from C2.[6]
S1028 Action RAT

Action RAT has the ability to download additional payloads onto an infected machine.[7]
S0331 Agent Tesla

Agent Tesla can download additional files for execution on the victim’s machine.[8][9]
S0092 Agent.btz

Agent.btz attempts to download an encrypted binary from a specified domain.[10]
G0130 Ajax Security Team

Ajax Security Team has used Wrapper/Gholee, custom-developed malware, which downloaded additional malware to the infected system.[11]
S1025 Amadey

Amadey can download and execute files to further infect a host machine with additional malware.[12]
S0504 Anchor

Anchor can download additional payloads.[13][14]
G0138 Andariel

Andariel has downloaded additional tools and malware onto compromised hosts.[15]
S1074 ANDROMEDA

ANDROMEDA can download additional payloads from C2.[16]
G0099 APT-C-36

APT-C-36 has downloaded binary data from a specified domain after the malicious document is opened.[17]
G0026 APT18

APT18 can upload a file to the victim’s machine.[18]
G0007 APT28

APT28 has downloaded additional files, including by using a first-stage downloader to contact the C2 server to obtain the second-stage implant.[19][20][21][22][23]
G0016 APT29

APT29 has downloaded additional tools and malware onto compromised networks.[24][25][26][27]
G0022 APT3

APT3 has a tool that can copy files to remote machines.[28]
G0050 APT32

APT32 has added JavaScript to victim websites to download additional frameworks that profile and compromise website visitors.[29]
G0064 APT33

APT33 has downloaded additional files and programs from its C2 server.[30][31]

G0067 APT37

APT37 has downloaded second stage malware from compromised websites.[32][33][34][35]
G0082 APT38

APT38 used a backdoor, NESTEGG, that has the capability to download and upload files to and from a victim’s machine.[36]
G0087 APT39

APT39 has downloaded tools to compromised hosts.[37][38]
G0096 APT41

APT41 used certutil to download additional files.[39][40][41] APT41 downloaded post-exploitation tools such as Cobalt Strike via command shell following initial access.[42] APT41 has uploaded Procdump and NATBypass to a staging directory and has used these tools in follow-on activities.[43]
C0040 APT41 DUST

APT41 DUST involved execution of certutil.exe via web shell to download the DUSTPAN dropper.[44]
G0143 Aquatic Panda

Aquatic Panda has downloaded additional malware onto compromised hosts.[45]
S0456 Aria-body

Aria-body has the ability to download additional payloads from C2.[46]
S0373 Astaroth

Astaroth uses certutil and BITSAdmin to download additional malware. [47][48][49]
S1087 AsyncRAT

AsyncRAT has the ability to download files over SFTP.[50]
S0438 Attor

Attor can download additional plugins, updates and other files. [51]
S0347 AuditCred

AuditCred can download files and additional malware.[52]
S0473 Avenger

Avenger has the ability to download files from C2 to a compromised host.[6]
S0344 Azorult

Azorult can download and execute additional files. Azorult has also downloaded a ransomware payload called Hermes.[53][54]
S0414 BabyShark

BabyShark has downloaded additional files from the C2.[55][56]
S0475 BackConfig

BackConfig can download and execute additional payloads on a compromised host.[57]
S0093 Backdoor.Oldrea

Backdoor.Oldrea can download additional modules from C2.[58]
G0135 BackdoorDiplomacy

BackdoorDiplomacy has downloaded additional files and tools onto a compromised host.[59]
S0642 BADFLICK

BADFLICK has download files from its C2 server.[60]
S1081 BADHATCH

BADHATCH has the ability to load a second stage malicious DLL file onto a compromised machine.[61]

S0128 BADNEWS

BADNEWS is capable of downloading additional files through C2 channels, including a new version of itself.[62][63][64]
S0337 BadPatch

BadPatch can download and execute or update malware.[65]
S0234 Bandook

Bandook can download files to the system.[66]
S0239 Bankshot

Bankshot uploads files and secondary payloads to the victim's machine.[67]
S0534 Bazar

Bazar can download and deploy additional payloads, including ransomware and post-exploitation frameworks such as Cobalt Strike.[68][69][70][71]
S0470 BBK

BBK has the ability to download files from C2 to the infected host.[6]
S0574 BendyBear

BendyBear is designed to download an implant from a C2 server.[72]
S0017 BISCUIT

BISCUIT has a command to download a file from the C2 server.[73]
S0268 Bisonal

Bisonal has the capability to download files to execute on the victim’s machine.[74][75][76]

S0190 BITSAdmin

BITSAdmin can be used to create BITS Jobs to upload and/or download files.[77]
G1002 BITTER

BITTER has downloaded additional malware and tools onto a compromised host.[78][79]

S0564 BlackMould

BlackMould has the ability to download files to the victim's machine.[80]
S0520 BLINDINGCAN

BLINDINGCAN has downloaded files to a victim machine.[81]
S0657 BLUELIGHT

BLUELIGHT can download additional files onto the host.[34]

S0486 Bonadan

Bonadan can download additional modules from the C2 server.[82]
S0360 BONDUPDATER

BONDUPDATER can download or upload files from its C2 server.[83]
S0635 BoomBox

BoomBox has the ability to download next stage malware components to a compromised system.[84]
S0651 BoxCaon

BoxCaon can download files.[85]
S0204 Briba

Briba downloads files onto infected hosts.[86]
G0060 BRONZE BUTLER

BRONZE BUTLER has used various tools to download files, including DGet (a similar tool to wget).[87]
S1063 Brute Ratel C4

Brute Ratel C4 can download files to compromised hosts.[88][89]
S0471 build_downer

build_downer has the ability to download files from C2 to the infected host.[6]
S1039 Bumblebee

Bumblebee can download and execute additional payloads including through the use of a Dex command.[90][91][92]
S0482 Bundlore

Bundlore can download and execute new versions of itself.[93]
S1118 BUSHWALK

BUSHWALK can write malicious payloads sent through a web request’s command parameter.[94][95]
C0010 C0010

During C0010, UNC3890 actors downloaded tools and malware onto a compromised host.[96]
C0015 C0015

During C0015, the threat actors downloaded additional tools and files onto a compromised network.[97]
C0017 C0017

During C0017, APT41 downloaded malicious payloads onto compromised systems.[98]
C0018 C0018

During C0018, the threat actors downloaded additional tools, such as Mimikatz and Sliver, as well as Cobalt Strike and AvosLocker ransomware onto the victim network.[99][100]
C0021 C0021

During C0021, the threat actors downloaded additional tools and files onto victim machines.[101][102]

C0026 C0026

During C0026, the threat actors downloaded malicious payloads onto select compromised hosts.[16]
C0027 C0027

During C0027, Scattered Spider downloaded tools using victim organization systems.[103]
S0274 Calisto

Calisto has the capability to upload and download files to the victim's machine.[104]
S0077 CallMe

CallMe has the capability to download a file to the victim from the C2 server.[105]
S0351 Cannon

Cannon can download a payload for execution.[106]
S0484 Carberp

Carberp can download and execute new plugins from the C2 server. [107][108]
S0348 Cardinal RAT

Cardinal RAT can download and execute additional payloads.[109]
S0465 CARROTBALL

CARROTBALL has the ability to download and install a remote payload.[110]
S0462 CARROTBAT

CARROTBAT has the ability to download and execute a remote file via certutil.[111]
S0572 Caterpillar WebShell

Caterpillar WebShell has a module to download and upload files to the system.[112]

S0160 certutil

certutil can be used to download files from a given URL.[113][114]
S0631 Chaes

Chaes can download additional files onto an infected machine.[115]
S0674 CharmPower

CharmPower has the ability to download additional modules to a compromised host.[116]
S0144 ChChes

ChChes is capable of downloading files, including additional modules.[117][118][119]
G0114 Chimera

Chimera has remotely copied tools and malware onto targeted systems.[120]
S1149 CHIMNEYSWEEP

CHIMNEYSWEEP can download additional files from C2.[121]
S0020 China Chopper

China Chopper's server component can download remote files.[122][123][124][125][126]
S0023 CHOPSTICK

CHOPSTICK is capable of performing remote file transmission.[127]
S0667 Chrommme

Chrommme can download its code from C2.[128]
G1021 Cinnamon Tempest

Cinnamon Tempest has downloaded files, including Cobalt Strike, to compromised hosts.[129]
S0054 CloudDuke

CloudDuke downloads and executes additional malware from either a Web address or a Microsoft OneDrive account.[26]
S0106 cmd

cmd can be used to copy files to/from a remotely connected external system.[130]
G0080 Cobalt Group

Cobalt Group has used public sites such as github.com and sendspace.com to upload files and then download them to victim computers.[131][3] The group's JavaScript backdoor is also capable of downloading files.[132]
S0154 Cobalt Strike

Cobalt Strike can deliver additional payloads to victim machines.[133][134]
S0369 CoinTicker

CoinTicker executes a Python script to download its second stage.[135]
S0608 Conficker

Conficker downloads an HTTP server to the infected machine.[136]
G0142 Confucius

Confucius has downloaded additional files and payloads onto a compromised host following initial access.[137][138]
S0492 CookieMiner

CookieMiner can download additional scripts from a web server.[139]
S0137 CORESHELL

CORESHELL downloads another dropper from its C2 server.[140]
S0614 CostaBricks

CostaBricks has been used to load SombRAT onto a compromised host.[141]
C0004 CostaRicto

During CostaRicto, the threat actors downloaded malware and tools onto a compromised host.[141]
S1023 CreepyDrive

CreepyDrive can download files to the compromised host.[142]
S0115 Crimson

Crimson contains a command to retrieve files from its C2 server.[143][144][145]
S0498 Cryptoistic

Cryptoistic has the ability to send and receive files.[146]
S0527 CSPY Downloader

CSPY Downloader can download additional tools to a compromised host.[147]
S0625 Cuba

Cuba can download files from its C2 server.[148]
C0029 Cutting Edge

During Cutting Edge, threat actors leveraged exploits to download remote files to Ivanti Connect Secure VPNs.[149]
S0687 Cyclops Blink

Cyclops Blink has the ability to download files to target systems.[150][151]
S0497 Dacls

Dacls can download its payload from a C2 server.[146][152]
G1034 Daggerfly

Daggerfly has used PowerShell and BITSAdmin to retrieve follow-on payloads from external locations for execution on victim machines.[153]
S1014 DanBot

DanBot can download additional files to a targeted system.[154]
S0334 DarkComet

DarkComet can load any files onto the infected machine to execute.[155][156]
S1111 DarkGate

DarkGate retrieves cryptocurrency mining payloads and commands in encrypted traffic from its command and control server.[157] DarkGate uses Windows Batch scripts executing the curl command to retrieve follow-on payloads.[158]
G0012 Darkhotel

Darkhotel has used first-stage payloads that download additional malware from C2 servers.[159]
S1066 DarkTortilla

DarkTortilla can download additional packages for keylogging, cryptocurrency mining, and other capabilities; it can also retrieve malicious payloads such as Agent Tesla, AsyncRat, NanoCore, RedLine, Cobalt Strike, and Metasploit.[160]
S0187 Daserf

Daserf can download remote files.[161][87]
S0255 DDKONG

DDKONG downloads and uploads files on the victim’s machine.[162]
S0616 DEATHRANSOM

DEATHRANSOM can download files to a compromised host.[163]
S0354 Denis

Denis deploys additional backdoors and hacking tools to the system.[164]
S0659 Diavol

Diavol can receive configuration updates and additional payloads including wscpy.exe from C2.[165]
S0200 Dipsind

Dipsind can download remote files.[166]
S1088 Disco

Disco can download files to targeted systems via SMB.[167]
S1021 DnsSystem

DnsSystem can download files to compromised systems after receiving a command with the string downloaddd.[168]
S0213 DOGCALL

DOGCALL can download and execute additional payloads.[169]
S0600 Doki

Doki has downloaded scripts from C2.[170]
S0695 Donut

Donut can download and execute previously staged shellcode payloads.[171]
S0472 down_new

down_new has the ability to download files to the compromised host.[6]
S0134 Downdelph

After downloading its main config file, Downdelph downloads multiple payloads from C2 servers.[172]
G0035 Dragonfly

Dragonfly has copied and installed tools for operations once in the victim environment.[173]
S0694 DRATzarus

DRATzarus can deploy additional tools onto an infected machine.[174]
S0547 DropBook

DropBook can download and execute additional files.[175][176]
S0502 Drovorub

Drovorub can download files to a compromised host.[177]
S0567 Dtrack

Dtrack’s can download and upload a file to the victim’s computer.[178][179]
S1159 DUSTTRAP

DUSTTRAP can retrieve and load additional payloads.[44]
S0024 Dyre

Dyre has a command to download and executes additional files.[180]
S0624 Ecipekac

Ecipekac can download additional payloads to a compromised host.[181]
S0554 Egregor

Egregor has the ability to download files from its C2 server.[182][183]
G0066 Elderwood

The Ritsol backdoor trojan used by Elderwood can download files onto a compromised host from a remote location.[184]
S0081 Elise

Elise can download additional files from the C2 server for execution.[185]
S0082 Emissary

Emissary has the capability to download files from the C2 server.[186]
S0363 Empire

Empire can upload and download to and from a victim machine.[187]
S0404 esentutl

esentutl can be used to copy files from a given URL.[188]
S0396 EvilBunny

EvilBunny has downloaded additional Lua scripts from the C2.[189]
S0568 EVILNUM

EVILNUM can download and upload files to the victim's computer.[190][191]
G0120 Evilnum

Evilnum can deploy additional components or tools as needed.[190]
S0401 Exaramel for Linux

Exaramel for Linux has a command to download a file from and to a remote C2 server.[192][193]
S0569 Explosive

Explosive has a function to download a file to the infected system.[194]

S0171 Felismus

Felismus can download files from remote servers.[195]
S0267 FELIXROOT

FELIXROOT downloads and uploads files to and from the victim’s machine.[196][197]
G1016 FIN13

FIN13 has downloaded additional tools and malware to compromised systems.[198][199]
G0046 FIN7

FIN7 has downloaded additional malware to execute on the victim's machine, including by using a PowerShell script to launch shellcode that retrieves an additional payload.[200][201][202]

G0061 FIN8

FIN8 has used remote code execution to download subsequent payloads.[203][204]
S0696 Flagpro

Flagpro can download additional malware from the C2 server.[205]
S0381 FlawedAmmyy

FlawedAmmyy can transfer files from C2.[206]
S0661 FoggyWeb

FoggyWeb can receive additional malicious components from an actor controlled C2 server and execute them on a compromised AD FS server.[207]
G0117 Fox Kitten

Fox Kitten has downloaded additional tools including PsExec directly to endpoints.[208]
C0001 Frankenstein

During Frankenstein, the threat actors downloaded files and tools onto a victim machine.[209]
S0095 ftp

ftp may be abused by adversaries to transfer tools or files from an external system into a compromised environment.[210][211]
S1044 FunnyDream

FunnyDream can download additional files onto a compromised host.[212]
C0007 FunnyDream

During FunnyDream, the threat actors downloaded additional droppers and backdoors onto a compromised system.[212]

S0628 FYAnti

FYAnti can download additional payloads to a compromised host.[181]

G0093 GALLIUM

GALLIUM dropped additional tools to victims during their operation, including portqry.exe, a renamed cmd.exe file, winrar, and HTRAN.[213][80]
G0047 Gamaredon Group

Gamaredon Group has downloaded additional malware and tools onto a compromised host.[214][215][216][217] For example, Gamaredon Group uses a backdoor script to retrieve and decode additional payloads once in victim environments.[218]

S0168 Gazer

Gazer can execute a task to download a file.[219][220]
S0666 Gelsemium

Gelsemium can download additional plug-ins to a compromised host.[128]
S0032 gh0st RAT

gh0st RAT can download files to the victim’s machine.[221][222]
S0249 Gold Dragon

Gold Dragon can download additional components from the C2 server.[223]
S0493 GoldenSpy

GoldenSpy constantly attempts to download and execute files from the remote C2, including GoldenSpy itself if not found on the system.[224]

S0588 GoldMax

GoldMax can download and execute additional files.[225][226]
S1138 Gootloader

Gootloader can fetch second stage code from hardcoded web domains.[227][228]
G0078 Gorgon Group

Gorgon Group malware can download additional files from C2 servers.[229]
S0531 Grandoreiro

Grandoreiro can download its second stage from a hardcoded URL within the loader's code.[230][231]
S0342 GreyEnergy

GreyEnergy can download additional modules and payloads.[197]
S0632 GrimAgent

GrimAgent has the ability to download and execute additional payloads.[232]
S0561 GuLoader

GuLoader can download further malware for execution on the victim's machine.[233]
S0132 H1N1

H1N1 contains a command to download and execute a file from a remotely hosted URL using WinINet HTTP requests.[234]
G0125 HAFNIUM

HAFNIUM has downloaded malware and tools--including Nishang and PowerCat--onto a compromised host.[235][125]

S0499 Hancitor

Hancitor has the ability to download additional files from C2.[236]
S0214 HAPPYWORK

can download and execute a second-stage payload.[32]
S0170 Helminth

Helminth can download additional files.[237]
G1001 HEXANE

HEXANE has downloaded additional payloads and malicious scripts onto a compromised host.[238]
S0087 Hi-Zor

Hi-Zor has the ability to upload and download files from its C2 server.[239]
S0394 HiddenWasp

HiddenWasp downloads a tar compressed archive from a download server to the system.[240]
S0009 Hikit

Hikit has the ability to download files to a compromised host.[241]
S0601 Hildegard

Hildegard has downloaded additional scripts that build and run Monero cryptocurrency miners.[242]
C0038 HomeLand Justice

During HomeLand Justice, threat actors used web shells to download files to compromised infrastructure.[243]
S0376 HOPLIGHT

HOPLIGHT has the ability to connect to a remote host in order to upload and download files.[244]

S0431 HotCroissant

HotCroissant has the ability to upload a file from the command and control (C2) server to the victim machine.[245]
S0070 HTTPBrowser

HTTPBrowser is capable of writing a file to the compromised system from the C2 server.[246]
S0203 Hydraq

Hydraq creates a backdoor through which remote attackers can download files and additional malware components.[247][248]
S0398 HyperBro

HyperBro has the ability to download additional files.[249]
S0483 IcedID

IcedID has the ability to download additional modules and a configuration file from C2.[250][251][252][253]
S1152 IMAPLoader

IMAPLoader is a loader used to retrieve follow-on payload encoded in email messages for execution on victim systems.[254]
G1032 INC Ransom

INC Ransom has downloaded tools to compromised servers including Advanced IP Scanner. [255][256]
G0136 IndigoZebra

IndigoZebra has downloaded additional files and tools from its C2 server.[85]
G0119 Indrik Spider

Indrik Spider has downloaded additional scripts, malware, and tools onto a compromised host.[257][258][259]
S0604 Industroyer

Industroyer downloads a shellcode payload from a remote C2 server and loads it into memory.[260]
S0260 InvisiMole

InvisiMole can upload files to the victim's machine for operations.[261][262]
S0015 Ixeshe

Ixeshe can download and execute additional files.[263]
S0528 Javali

Javali can download payloads from remote C2 servers.[49]
S0044 JHUHUGIT

JHUHUGIT can retrieve an additional payload from its C2 server.[264][265] JHUHUGIT has a command to download files to the victim’s machine.[266]
S0201 JPIN

JPIN can download files and upgrade itself.[166]
S0283 jRAT

jRAT can download and execute files.[267][268][269]
S0648 JSS Loader

JSS Loader has the ability to download malicious executables to a compromised host.[270]
S0215 KARAE

KARAE can upload and download files, including second-stage malware.[32]
S0088 Kasidet

Kasidet has the ability to download and execute additional files.[271]
S0265 Kazuar

Kazuar downloads additional plug-ins to load on the victim’s machine, including the ability to upgrade and replace its own binary.[272]
G0004 Ke3chang

Ke3chang has used tools to download files to compromised machines.[273]
S0585 Kerrdown

Kerrdown can download specific payloads to a compromised host based on OS architecture.[274]
S0487 Kessel

Kessel can download additional modules from the C2 server.[82]
S1020 Kevin

Kevin can download files to the compromised host.[238]
S0387 KeyBoy

KeyBoy has a download and upload functionality.[275][276]
S0271 KEYMARBLE

KEYMARBLE can upload files to the victim’s machine and can download additional payloads.[277]
S0526 KGH_SPY

KGH_SPY has the ability to download and execute code from remote servers.[147]
G0094 Kimsuky

Kimsuky has downloaded additional scripts, tools, and malware onto victim systems.[40][278]
S0599 Kinsing

Kinsing has downloaded additional lateral movement scripts from C2.[279]
S0437 Kivars

Kivars has the ability to download and execute files.[280]
S0250 Koadic

Koadic can download additional files and tools.[281][282]
S0669 KOCTOPUS

KOCTOPUS has executed a PowerShell command to download a file to the system.[282]
S0356 KONNI

KONNI can download files and execute them on the victim’s machine.[283][284]

C0035 KV Botnet Activity

KV Botnet Activity included the use of scripts to download additional payloads when compromising network nodes.[285]
S0236 Kwampirs

Kwampirs downloads additional files from C2 servers.[286]
S1160 Latrodectus

Latrodectus can download and execute PEs, DLLs, and shellcode from C2.[253][287][288]
G0032 Lazarus Group

Lazarus Group has downloaded files, malware, and tools from its C2 onto a compromised host.[289][290][291][146][152][292][293][294][295][296]
G0140 LazyScripter

LazyScripter had downloaded additional tools to a compromised host.[282]
G0065 Leviathan

Leviathan has downloaded additional scripts and files from adversary-controlled servers.[297][122]
S0395 LightNeuron

LightNeuron has the ability to download and execute additional files.[298]
S0211 Linfo

Linfo creates a backdoor through which remote attackers can download files onto compromised hosts.[299]
S0513 LiteDuke

LiteDuke has the ability to download files.[300]
S0680 LitePower

LitePower has the ability to download payloads containing system commands to a compromised host.[301]
S0681 Lizar

Lizar can download additional plugins, files, and tools.[302]
S0447 Lokibot

Lokibot downloaded several staged items onto the victim's machine.[303]

S0451 LoudMiner

LoudMiner used SCP to update the miner from the C2.[304]
S0042 LOWBALL

LOWBALL uses the Dropbox API to request two files, one of which is the same file as the one dropped by the malicious email attachment. This is most likely meant to be a mechanism to update the compromised host with a new version of the LOWBALL malware.[305]
S0532 Lucifer

Lucifer can download and execute a replica of itself using certutil.[306]
G1014 LuminousMoth

LuminousMoth has downloaded additional malware and tools onto a compromised host.[307][308]
S0409 Machete

Machete can download additional files for execution on the victim’s machine.[309]

S1016 MacMa

MacMa has downloaded additional files, including an exploit for used privilege escalation.[310][311]
S1048 macOS.OSAMiner

macOS.OSAMiner has used curl to download a Stripped Payloads from a public facing adversary-controlled webpage.

S1060 Mafalda

Mafalda can download additional files onto the compromised host.[312]
G0059 Magic Hound

Magic Hound has downloaded additional code and files from servers onto victims.[313][314][315][316]
S0652 MarkiRAT

MarkiRAT can download additional files and tools from its C2 server, including through the use of BITSAdmin.[317]
S0500 MCMD

MCMD can upload additional files to a compromised host.[318]
S0459 MechaFlounder

MechaFlounder has the ability to upload and download files to and from a compromised host.[319]
S0530 Melcoz

Melcoz has the ability to download additional files to a compromised host.[49]
G0045 menuPass

menuPass has installed updates and new malware on victims.[320][321]
G1013 Metador

Metador has downloaded tools and malware onto a compromised system.[322]
S1059 metaMain

metaMain can download files onto compromised systems.[322][312]
S0455 Metamorfo

Metamorfo has used MSI files to download additional files to execute.[323][324][325][326]

S0688 Meteor

Meteor has the ability to download additional files for execution on the victim's machine.[327]
S0339 Micropsia

Micropsia can download and execute an executable from the C2 server.[328][329]
S1015 Milan

Milan has received files from C2 and stored them in log folders beginning with the character sequence a9850d2f.[330]
S0051 MiniDuke

MiniDuke can download additional encrypted backdoors onto the victim via GIF files.[331][300]
S0084 Mis-Type

Mis-Type has downloaded additional malware and files onto a compromised host.[332]
S0083 Misdat

Misdat is capable of downloading files from the C2.[332]
S0080 Mivast

Mivast has the capability to download and execute .exe files.[333]
S0079 MobileOrder

MobileOrder has a command to download a file from the C2 server to the victim mobile device's SD card.[105]
S0553 MoleNet

MoleNet can download additional payloads from the C2.[175]

G0021 Molerats

Molerats used executables to download malicious files from different sources.[334][335]

S1026 Mongall

Mongall can download files to targeted systems.[336]
G1036 Moonstone Sleet

Moonstone Sleet retrieved a final stage payload from command and control infrastructure during initial installation on victim systems.[337]
S0284 More_eggs

More_eggs can download and launch additional payloads.[338][339]
G1009 Moses Staff

Moses Staff has downloaded and installed web shells to following path C:\inetpub\wwwroot\aspnet_client\system_web\IISpool.aspx.[340]
S0256 Mosquito

Mosquito can upload and download files to the victim.[341]
G0069 MuddyWater

MuddyWater has used malware that can upload additional files to the victim’s machine.[342][343][344][345]
G0129 Mustang Panda

Mustang Panda has downloaded additional executables following the initial infection stage.[346]
G1020 Mustard Tempest

Mustard Tempest has deployed secondary payloads and third stage implants to compromised hosts.[347]
S0228 NanHaiShu

NanHaiShu can download additional files from URLs.[297]
S0336 NanoCore

NanoCore has the capability to download and activate additional modules for execution.[348][349]
S0247 NavRAT

NavRAT can download files remotely.[350]
S0272 NDiskMonitor

NDiskMonitor can download and execute a file from given URL.[64]
S0630 Nebulae

Nebulae can download files from C2.[351]
S0691 Neoichor

Neoichor can download additional files onto a compromised host.[273]
S0210 Nerex

Nerex creates a backdoor through which remote attackers can download files onto a compromised host.[184]
S0457 Netwalker

Operators deploying Netwalker have used psexec and certutil to retrieve the Netwalker payload.[352]
S0198 NETWIRE

NETWIRE can downloaded payloads from C2 to the compromised host.[353][354]
S0118 Nidiran

Nidiran can download and execute files.[355]
C0002 Night Dragon

During Night Dragon, threat actors used administrative utilities to deliver Trojan components to remote systems.[356]
S1090 NightClub

NightClub can load multiple additional plugins on an infected host.[167]
S0385 njRAT

njRAT can download files to the victim’s machine.[357][358]
S0353 NOKKI

NOKKI has downloaded a remote module for execution.[359]
G0133 Nomadic Octopus

Nomadic Octopus has used malicious macros to download additional files to the victim's machine.[360]

S0340 Octopus

Octopus can download additional files and tools onto the victim’s machine.[361][362][360]
G0049 OilRig

OilRig can download remote files onto victims.[363]
S0439 Okrum

Okrum has built-in commands for uploading, downloading, and executing files to the system.[364]
S0264 OopsIE

OopsIE can download files from its C2 server to the victim's machine.[365][366]
C0022 Operation Dream Job

During Operation Dream Job, Lazarus Group downloaded multistage malware and tools onto a compromised host.[174][367][368]
C0006 Operation Honeybee

During Operation Honeybee, the threat actors downloaded additional malware and malicious scripts onto a compromised host.[369]
C0013 Operation Sharpshooter

During Operation Sharpshooter, additional payloads were downloaded after a target was infected with a first-stage downloader.[370]
C0014 Operation Wocao

During Operation Wocao, threat actors downloaded additional files to the infected system.[371]
S0229 Orz

Orz can download files onto the victim.[297]
S0402 OSX/Shlayer

OSX/Shlayer can download payloads, and extract bytes from files. OSX/Shlayer uses the curl -fsL "$url" >$tmp_path command to download malicious payloads into a temporary directory.[372][373][374][375]
S0352 OSX_OCEANLOTUS.D

OSX_OCEANLOTUS.D has a command to download and execute a file on the victim’s machine.[376][377]
S1017 OutSteel

OutSteel can download files from its C2 server.[378]
S0598 P.A.S. Webshell

P.A.S. Webshell can upload and download files to and from compromised hosts.[193]
S0626 P8RAT

P8RAT can download additional payloads to a target system.[181]
S0664 Pandora

Pandora can load additional drivers and files onto a victim machine.[379]
S0208 Pasam

Pasam creates a backdoor through which remote attackers can upload files.[380]
G0040 Patchwork

Patchwork payloads download additional files from the C2 server.[381][64]
S0587 Penquin

Penquin can execute the command code do_download to retrieve remote files from C2.[382]
S0643 Peppy

Peppy can download and execute remote files.[143]
S0501 PipeMon

PipeMon can install additional modules via C2 commands.[383]
S0124 Pisloader

Pisloader has a command to upload a file to the victim machine.[384]
S0254 PLAINTEE

PLAINTEE has downloaded and executed additional plugins.[162]
G0068 PLATINUM

PLATINUM has transferred files using the Intel® Active Management Technology (AMT) Serial-over-LAN (SOL) channel.[385]
G1040 Play

Play has used Cobalt Strike to download files to compromised machines.[386]
S0435 PLEAD

PLEAD has the ability to upload and download files to and from an infected host.[387]
S0013 PlugX

PlugX has a module to download and execute files on the compromised machine.[388][389]
S0428 PoetRAT

PoetRAT has the ability to copy files and download/upload files into C2 channels using FTP and HTTPS.[390][391]
S0012 PoisonIvy

PoisonIvy creates a backdoor through which remote attackers can upload files.[392]
S0518 PolyglotDuke

PolyglotDuke can retrieve payloads from the C2 server.[300]
S0453 Pony

Pony can download additional files onto the infected system.[393]

S0150 POSHSPY

POSHSPY downloads and executes additional PowerShell code and Windows binaries.[394]
S0139 PowerDuke

PowerDuke has a command to download a file.[395]
S1012 PowerLess

PowerLess can download additional payloads to a compromised host.[396]
S0685 PowerPunch

PowerPunch can download payloads from adversary infrastructure.[217]
S0145 POWERSOURCE

POWERSOURCE has been observed being used to download TEXTMATE and the Cobalt Strike Beacon payload onto victims.[397]
S0223 POWERSTATS

POWERSTATS can retrieve and execute additional PowerShell payloads from the C2 server.[398]
S0184 POWRUNER

POWRUNER can download or upload files from its C2 server.[363]
S0613 PS1

CostaBricks can download additional payloads onto a compromised host.[141]
S0078 Psylo

Psylo has a command to download a file to the system from its C2 server.[105]
S0147 Pteranodon

Pteranodon can download and execute additional files.[214][399][400]
S0196 PUNCHBUGGY

PUNCHBUGGY can download additional files and payloads to compromised hosts.[401][402]
S0192 Pupy

Pupy can upload and download to/from a victim machine.[403]
S0650 QakBot

QakBot has the ability to download additional components and malware.[404][405][406][407][408][409]
S0262 QuasarRAT

QuasarRAT can download files to the victim’s machine and execute them.[410][411]
S0686 QuietSieve

QuietSieve can download and execute payloads on a target host.[217]
S1148 Raccoon Stealer

Raccoon Stealer downloads various library files enabling interaction with various data stores and structures to facilitate follow-on information theft.[412][413]
S0629 RainyDay

RainyDay can download files to a compromised host.[351]
G0075 Rancor

Rancor has downloaded additional malware, including by using certutil.[162]
S0055 RARSTONE

RARSTONE downloads its backdoor component from a C2 server and loads it directly into memory.[414]
S1130 Raspberry Robin

Raspberry Robin retrieves its second stage payload in a variety of ways such as through msiexec.exe abuse, or running the curl command to download the payload to the victim's %AppData% folder.[415][416]
S0241 RATANKBA

RATANKBA uploads and downloads information.[417][418]
S0662 RCSession

RCSession has the ability to drop additional files to an infected machine.[419]
S0495 RDAT

RDAT can download files via DNS.[420]

S0153 RedLeaves

RedLeaves is capable of downloading a file from a specified URL.[421]
S0511 RegDuke

RegDuke can download files from C2.[300]
S0332 Remcos

Remcos can upload and download files to and from the victim’s machine.[422]
S0166 RemoteCMD

RemoteCMD copies a file over to the remote system before execution.[423]
S0592 RemoteUtilities

RemoteUtilities can upload and download files to and from a target machine.[345]
S0125 Remsec

Remsec contains a network loader to receive executable modules from remote attackers and run them on the local victim. It can also upload and download files over HTTP and HTTPS.[424][425]
S0379 Revenge RAT

Revenge RAT has the ability to upload and download files.[426]
S0496 REvil

REvil can download a copy of itself from an attacker controlled IP address to the victim machine.[427][428][429]
S0258 RGDoor

RGDoor uploads and downloads files to and from the victim’s machine.[430]
G0106 Rocke

Rocke used malware to download additional malicious files to the target system.[431]

S0270 RogueRobin

RogueRobin can save a new file to the system from the C2 server.[432][433]
S0240 ROKRAT

ROKRAT can retrieve additional malicious payloads from its C2 server.[434][435][35][436]
S0148 RTM

RTM can download additional files.[437][438]
S0085 S-Type

S-Type can download additional files onto a compromised host.[332]
S1018 Saint Bot

Saint Bot can download additional files onto a compromised host.[378]
S0074 Sakula

Sakula has the capability to download files.[439]
S1099 Samurai

Samurai has been used to deploy other malware including Ninja.[126]
G0034 Sandworm Team

Sandworm Team has pushed additional malicious tools onto an infected system to steal user credentials, move laterally, and destroy data.[440][441]
S1085 Sardonic

Sardonic has the ability to upload additional malicious files to a compromised machine.[442]
S0461 SDBbot

SDBbot has the ability to download a DLL from C2 to a compromised host.[443]
S0053 SeaDuke

SeaDuke is capable of uploading and downloading files.[444]
S0345 Seasalt

Seasalt has a command to download additional files.[73][73]
S0185 SEASHARPEE

SEASHARPEE can download remote files onto victims.[445]
S0382 ServHelper

ServHelper may download additional files to execute.[446][447]
S0639 Seth-Locker

Seth-Locker has the ability to download and execute files on a compromised host.[448]
S0596 ShadowPad

ShadowPad has downloaded code from a C2 server.[449]
S0140 Shamoon

Shamoon can download an executable to run on the victim.[450]
S1019 Shark

Shark can download additional files from its C2 via HTTP or DNS.[330][451]
S1089 SharpDisco

SharpDisco has been used to download a Python interpreter to C:\Users\Public\WinTN\WinTN.exe as well as other plugins from external sources.[167]
S0546 SharpStage

SharpStage has the ability to download and execute additional payloads via a DropBox API.[175][176]
S0450 SHARPSTATS

SHARPSTATS has the ability to upload and download files.[452]
S0444 ShimRat

ShimRat can download additional files.[453]
S0445 ShimRatReporter

ShimRatReporter had the ability to download additional payloads.[453]
S0217 SHUTTERSPEED

SHUTTERSPEED can download and execute an arbitary executable.[32]
S0589 Sibot

Sibot can download and execute a payload onto a compromised system.[225]
G1008 SideCopy

SideCopy has delivered trojanized executables via spearphishing emails that contacts actor-controlled servers to download malicious payloads.[7]
S0610 SideTwist

SideTwist has the ability to download additional files.[454]
G0121 Sidewinder

Sidewinder has used LNK files to download remote files to the victim's network.[455][456]
G0091 Silence

Silence has downloaded additional modules and malware to victim’s machines.[457]

S0692 SILENTTRINITY

SILENTTRINITY can load additional files and tools, including Mimikatz.[458]
S0468 Skidmap

Skidmap has the ability to download files on an infected host.[459]

S1110 SLIGHTPULSE

RAPIDPULSE can transfer files to and from compromised hosts.[460]
S0633 Sliver

Sliver can upload files from the C2 server to the victim machine using the upload command.[461]
S0533 SLOTHFULMEDIA

SLOTHFULMEDIA has downloaded files onto a victim machine.[462]
S0218 SLOWDRIFT

SLOWDRIFT downloads additional payloads.[32]
S1035 Small Sieve

Small Sieve has the ability to download files.[463]
S0226 Smoke Loader

Smoke Loader downloads a new version of itself once it has installed. It also downloads additional plugins.[464]
S0649 SMOKEDHAM

SMOKEDHAM has used Powershell to download UltraVNC and ngrok from third-party file sharing sites.[465]
S1086 Snip3

Snip3 can download additional payloads to compromised systems.[466][467]
S1124 SocGholish

SocGholish can download additional malware to infected hosts.[468][469]
S0627 SodaMaster

SodaMaster has the ability to download additional payloads from C2 to the targeted system.[181]
C0024 SolarWinds Compromise

During the SolarWinds Compromise, APT29 downloaded additional malware, such as TEARDROP and Cobalt Strike, onto a compromised host following initial access.[470]
S0615 SombRAT

SombRAT has the ability to download and execute additional payloads.[141][163][471]
S0516 SoreFang

SoreFang can download additional payloads from C2.[472][473]
S0374 SpeakUp

SpeakUp downloads and executes additional files from a remote server. [474]
S1140 Spica

Spica can upload and download files to and from compromised hosts.[475]
S0646 SpicyOmelette

SpicyOmelette can download malicious files from threat actor controlled AWS URL's.[476]
S0390 SQLRat

SQLRat can make a direct SQL connection to a Microsoft database controlled by the attackers, retrieve an item from the bindata table, then write and execute the file on disk.[477]

S1030 Squirrelwaffle

Squirrelwaffle has downloaded and executed additional encoded payloads.[478][479]
S1112 STEADYPULSE

STEADYPULSE can add lines to a Perl script on a targeted server to import additional Perl modules.[480]
S0380 StoneDrill

StoneDrill has downloaded and dropped temporary files containing scripts; it additionally has a function to upload files from the victims machine.[481]

S1034 StrifeWater

StrifeWater can download updates and auxiliary modules.[482]
S0491 StrongPity

StrongPity can download files to specified targets.[483]
S0559 SUNBURST

SUNBURST delivered different payloads, including TEARDROP in at least one instance.[470]
S1064 SVCReady

SVCReady has the ability to download additional tools such as the RedLine Stealer to an infected host.[484]
S0663 SysUpdate

SysUpdate has the ability to download files to a compromised host.[379][485]
G1018 TA2541

TA2541 has used malicious scripts and macros with the ability to download additional payloads.[486]
G0092 TA505

TA505 has downloaded additional malware to execute on victim systems.[487][447][488]
G0127 TA551

TA551 has retrieved DLLs and installer binaries for malware execution from C2.[489]
S0011 Taidoor

Taidoor has downloaded additional files onto a compromised host.[490]
S0586 TAINTEDSCRIBE

TAINTEDSCRIBE can download additional modules from its C2 server.[491]
S0164 TDTESS

TDTESS has a command to download and execute an additional file.[492]
G0139 TeamTNT

TeamTNT has the curl and wget commands as well as batch scripts to download new tools.[493][494]
S0595 ThiefQuest

ThiefQuest can download and execute payloads in-memory or from disk.[495]
G0027 Threat Group-3390

Threat Group-3390 has downloaded additional malware and tools, including through the use of certutil, onto a compromised host .[246][496]
S0665 ThreatNeedle

ThreatNeedle can download additional tools to enable lateral movement.[292]
S0668 TinyTurla

TinyTurla has the ability to act as a second-stage dropper used to infect the system with additional malware.[497]
S0671 Tomiris

Tomiris can download files and execute them on a victim's system.[498]
G0131 Tonto Team

Tonto Team has downloaded malicious DLLs which served as a ShadowPad loader.[499]
S0266 TrickBot

TrickBot downloads several additional files and saves them to the victim's machine.[500][501]
S0094 Trojan.Karagany

Trojan.Karagany can upload, download, and execute files on the victim.[502][503]
G0081 Tropic Trooper

Tropic Trooper has used a delivered trojan to download additional files.[504]
S0436 TSCookie

TSCookie has the ability to upload and download files to and from the infected host.[505]
S0647 Turian

Turian can download additional files and tools from its C2.[59]
G0010 Turla

Turla has used shellcode to download Meterpreter after compromising a victim.[506]
S0199 TURNEDUP

TURNEDUP is capable of downloading additional files.[507]
S0263 TYPEFRAME

TYPEFRAME can upload and download files to the victim’s machine.[508]
S0333 UBoatRAT

UBoatRAT can upload and download files to the victim’s machine.[509]
S0130 Unknown Logger

Unknown Logger is capable of downloading remote files.[62]
S0275 UPPERCUT

UPPERCUT can download and upload files to and from the victim’s machine.[510]
S0022 Uroburos

Uroburos can use a Put command to write files to an infected machine.[511]
S0386 Ursnif

Ursnif has dropped payload and configuration files to disk. Ursnif has also been used to download and execute additional payloads.[512][513]
S0476 Valak

Valak has downloaded a variety of modules and payloads to the compromised host, including IcedID and NetSupport Manager RAT-based malware.[514][515]
S0636 VaporRage

VaporRage has the ability to download malicious shellcode to compromised systems.[84]
S0207 Vasport

Vasport can download files.[516]
S0442 VBShower

VBShower has the ability to download VBS files to the target computer.[517]
S0257 VERMIN

VERMIN can download and upload files to the victim's machine.[518]
G0123 Volatile Cedar

Volatile Cedar can deploy additional tools.[112]
S0180 Volgmer

Volgmer can download remote files and additional payloads to the victim's machine.[519][520][521]
G1017 Volt Typhoon

Volt Typhoon has downloaded an outdated version of comsvcs.dll to a compromised domain controller in a non-standard folder.[522]
S0670 WarzoneRAT

WarzoneRAT can download and execute additional files.[523]
C0037 Water Curupira Pikabot Distribution

Water Curupira Pikabot Distribution used Curl.exe to download the Pikabot payload from an external server, saving the file to the victim machine's temporary directory.[524]
S0579 Waterbear

Waterbear can receive and load executables from remote C2 servers.[525]
S0109 WEBC2

WEBC2 can download and execute a file.[526]
S0515 WellMail

WellMail can receive data and executable scripts from C2.[527]
S0514 WellMess

WellMess can write files to a compromised host.[25][528]
S0689 WhisperGate

WhisperGate can download additional stages of malware from a Discord CDN channel.[529][530][531][532]
G0107 Whitefly

Whitefly has the ability to download additional tools from the C2.[533]
S0206 Wiarp

Wiarp creates a backdoor through which remote attackers can download files.[534]
G0112 Windshift

Windshift has used tools to deploy additional payloads to compromised hosts.[535]
S0430 Winnti for Linux

Winnti for Linux has the ability to deploy modules directly from command and control (C2) servers, possibly for remote command execution, file exfiltration, and socks5 proxying on the infected host. [536]
S0141 Winnti for Windows

The Winnti for Windows dropper can place malicious payloads on targeted systems.[537]
G0044 Winnti Group

Winnti Group has downloaded an auxiliary program named ff.exe to infected machines.[538]
G1035 Winter Vivern

Winter Vivern executed PowerShell scripts to create scheduled tasks to retrieve remotely-hosted payloads.[539]
S1115 WIREFIRE

WIREFIRE has the ability to download files to compromised devices.[540]
G0090 WIRTE

WIRTE has downloaded PowerShell code from the C2 server to be executed.[541]
G0102 Wizard Spider

Wizard Spider can transfer malicious payloads such as ransomware to compromised machines.[542]
S1065 Woody RAT

Woody RAT can download files from its C2 server, including the .NET DLLs, WoodySharpExecutor and WoodyPowerSession.[543]

S0341 Xbash

Xbash can download additional malicious files from its C2 server.[544]
S0653 xCaon

xCaon has a command to download files to the victim's machine.[85]
S0658 XCSSET

XCSSET downloads browser specific AppleScript modules using a constructed URL with the curl command, https://" & domain & "/agent/scripts/" & moduleName & ".applescript.[545]
S0388 YAHOYAH

YAHOYAH uses HTTP GET requests to download other files that are executed in memory.[546]
S0251 Zebrocy

Zebrocy obtains additional code to execute on the victim's machine, including the downloading of a secondary payload.[547][106][548][21]
S0230 ZeroT

ZeroT can download additional payloads onto the victim.[549]
S0330 Zeus Panda

Zeus Panda can download additional malware plug-in modules and execute them on the victim’s machine.[550]
S1114 ZIPLINE

ZIPLINE can download files to be saved on the compromised system.[540][94]
G0128 ZIRCONIUM

ZIRCONIUM has used tools to download malicious files to compromised hosts.[551]
S0086 ZLib

ZLib has the ability to download files.[332]
S0672 Zox

Zox can download files to a compromised machine.[241]
S0412 ZxShell

ZxShell has a command to transfer files from a remote host.[552]

S1013 ZxxZ

ZxxZ can download and execute additional files.[78]

Mitigations

ID Mitigation Description
M1031 Network Intrusion Prevention

Network intrusion detection and prevention systems that use network signatures to identify traffic for specific adversary malware or unusual data transfer over known protocols like FTP can be used to mitigate activity at the network level. Signatures are often for unique indicators within protocols and may be based on the specific obfuscation technique used by a particular adversary or tool, and will likely be different across various malware families and versions. Adversaries will likely change tool C2 signatures over time or construct protocols in such a way as to avoid detection by common defensive tools.[553]

Detection

ID Data Source Data Component Detects
DS0017 Command Command Execution

Monitor executed commands and arguments for suspicious activity associated with downloading external content.
DS0022 File File Creation

Monitor for file creation and files transferred into the network
DS0029 Network Traffic Network Connection Creation

Monitor for newly constructed network connections that are sent or received by untrusted hosts or creating files on-system may be suspicious. Use of utilities, such as FTP, that does not normally occur may also be suspicious.
Network Traffic Content

Monitor network traffic content for files and other potentially malicious content, especially data coming in from abnormal/unknown domain and IPs.
Network Traffic Flow

Monitor network data for uncommon data flows (e.g., a client sending significantly more data than it receives from a server). Processes utilizing the network that do not normally have network communication or have never been seen before are suspicious.

References

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