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T1036 Masquerading

Adversaries may attempt to manipulate features of their artifacts to make them appear legitimate or benign to users and/or security tools. Masquerading occurs when the name or location of an object, legitimate or malicious, is manipulated or abused for the sake of evading defenses and observation. This may include manipulating file metadata, tricking users into misidentifying the file type, and giving legitimate task or service names.

Renaming abusable system utilities to evade security monitoring is also a form of Masquerading.1

Item Value
ID T1036
Sub-techniques T1036.001, T1036.002, T1036.003, T1036.004, T1036.005, T1036.006, T1036.007
Tactics TA0005
Platforms Containers, Linux, Windows, macOS
Version 1.4
Created 31 May 2017
Last Modified 18 October 2021

Procedure Examples

ID Name Description
S0622 AppleSeed AppleSeed can disguise JavaScript files as PDFs.21
G0007 APT28 APT28 has renamed the WinRAR utility to avoid detection.31
G0016 APT29 APT29 has set the hostnames of its C2 infrastructure to match legitimate hostnames in the victim environment. They have also used IP addresses originating from the same country as the victim for their VPN infrastructure.34
G0050 APT32 APT32 has disguised a Cobalt Strike beacon as a Flash Installer.43
S0268 Bisonal Bisonal dropped a decoy payload with a .jpg extension that contained a malicious Visual Basic script.22
S0635 BoomBox BoomBox has the ability to mask malicious data strings as PDF files.12
G0060 BRONZE BUTLER BRONZE BUTLER has masked executables with document file icons including Word and Adobe PDF.42
S0497 Dacls The Dacls Mach-O binary has been disguised as a .nib file.15
S0673 DarkWatchman DarkWatchman has used an icon mimicking a text file to mask a malicious executable.19
G0035 Dragonfly Dragonfly has created accounts disguised as legitimate backup and service accounts as well as an email administration account.36
S0634 EnvyScout EnvyScout has used folder icons for malicious files to lure victims into opening them.12
S0512 FatDuke FatDuke has attempted to mimic a compromised user’s traffic by using the same user agent as the installed browser.24
S0696 Flagpro Flagpro can download malicious files with a .tmp extension and append them with .exe prior to execution.9
S0661 FoggyWeb FoggyWeb can masquerade the output of C2 commands as a fake, but legitimately formatted WebP file.27
G0094 Kimsuky Kimsuky has disguised its C2 addresses as the websites of shopping malls, governments, universities, and others.33
G0032 Lazarus Group Lazarus Group has disguised malicious template files as JPEG files to avoid detection.40
G0140 LazyScripter LazyScripter has used several different security software icons to disguise executables.37
G0045 menuPass menuPass has used esentutl to change file extensions to their true type that were masquerading as .txt files.39
S0637 NativeZone NativeZone has, upon execution, displayed a message box that appears to be related to a Ukrainian electronic document management system.10
G0133 Nomadic Octopus Nomadic Octopus attempted to make Octopus appear as a Telegram Messenger with a Russian interface.35
S0368 NotPetya NotPetya drops PsExec with the filename dllhost.dat.26
G0049 OilRig OilRig has used .doc file extensions to mask malicious executables.41
G0068 PLATINUM PLATINUM has renamed rar.exe to avoid detection.32
S0650 QakBot The QakBot payload has been disguised as a PNG file.7
S0565 Raindrop Raindrop was built to include a modified version of 7-Zip source code (including associated export names) and Far Manager source code.1718
S0458 Ramsay Ramsay has masqueraded as a JPG image file.16
S0662 RCSession RCSession has used a file named English.rtf to appear benign on victim hosts.1314
S0148 RTM RTM has been delivered as archived Windows executable files masquerading as PDF documents.23
S0446 Ryuk Ryuk can create .dll files that actually contain a Rich Text File format document.5
S0615 SombRAT SombRAT can use a legitimate process name to hide itself.20
G0127 TA551 TA551 has masked malware DLLs as dat and jpg files.38
S0682 TrailBlazer TrailBlazer has used filenames that match the name of the compromised system in attempt to avoid detection.11
S0266 TrickBot The TrickBot downloader has used an icon to appear as a Microsoft Word document.4
S0609 TRITON TRITON attempts to write a dummy program into memory if it fails to reset the Triconex controller.25
S0689 WhisperGate WhisperGate has been disguised as a JPG extension to avoid detection as a malicious PE file.6
G0112 Windshift Windshift has used icons mimicking MS Office files to mask malicious executables.28 Windshift has also attempted to hide executables by changing the file extension to “.scr” to mimic Windows screensavers.44
S0466 WindTail WindTail has used icons mimicking MS Office files to mask payloads.28
S0658 XCSSET XCSSET builds a malicious application bundle to resemble Safari through using the Safari icon and Info.plist. 8
G0128 ZIRCONIUM ZIRCONIUM has spoofed legitimate applications in phishing lures and changed file extensions to conceal installation of malware.2930


ID Mitigation Description
M1045 Code Signing Require signed binaries.
M1038 Execution Prevention Use tools that restrict program execution via application control by attributes other than file name for common operating system utilities that are needed.
M1022 Restrict File and Directory Permissions Use file system access controls to protect folders such as C:\Windows\System32.


ID Data Source Data Component
DS0017 Command Command Execution
DS0022 File File Metadata
DS0007 Image Image Metadata
DS0009 Process Process Metadata
DS0003 Scheduled Job Scheduled Job Metadata
DS0019 Service Service Creation


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