MITRE ATT&CKtechnique

T1140 Deobfuscate/Decode Files or Information

Published 2017-12-14 Modified 2026-09-11 Official page ↗
Domain
enterprise
Tactics
Stealth
Platforms
ESXi, Linux, macOS, Windows
Version
2.0
Created
2017-12-14

Description

Adversaries may use Obfuscated Files or Information to hide artifacts of an intrusion from analysis. They may require separate mechanisms to decode or deobfuscate that information depending on how they intend to use it. Methods for doing that include built-in functionality of malware or by using utilities present on the system. One such example is the use of certutil to decode a remote access tool portable executable file that has been hidden inside a certificate file. Another example is using the Windows copy /b or type command to reassemble binary fragments into a malicious payload. Sometimes a user's action may be required to open it for deobfuscation or decryption as part of User Execution. The user may also be required to input a password to open a password protected compressed/encrypted file that was provided by the adversary.

Related

Tactic · MITRE ATT&CK (1)

Referenced by MITRE ATT&CK · uses (358)

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  • S9041 TeamPCP Cloud Stealer software (malware)
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  • S9035 LAMEHUG software (malware)
  • S9036 LP-Notes software (malware)
  • S9037 RustyWater software (malware)
  • S9029 IronWind software (malware)
  • S9031 AshTag software (malware)
  • S9032 MuddyViper software (malware)
  • S9033 Fooder software (malware)
  • S9034 Tsundere Botnet software (malware)
  • S9027 ANELLDR software (malware)
  • S9028 PHPsert software (malware)
  • S9021 DOWNIISSA software (malware)
  • S9023 HiddenFace software (malware)
  • S9024 SPAWNCHIMERA software (malware)
  • S9025 NOOPLDR software (malware)
  • S9026 ROAMINGHOUSE software (malware)
  • S9014 PHASEJAM software (malware)
  • S9015 BRICKSTORM software (malware)
  • S9016 Caminho software (malware)
  • S9018 HeartCrypt software (malware)
  • S9019 PureCrypter software (malware)
  • S9011 BRUSHFIRE software (malware)
Show all 358 ›

References