T1036.001SubTechniquedefense-evasionagent-callable

T1036.001Invalid Code Signature

Sub-technique of T1036

Platforms: macOS · Windows

ATT&CK version: 14.1

What it is

Adversaries may attempt to mimic features of valid code signatures to increase the chance of deceiving a user, analyst, or tool. Code signing provides a level of authenticity on a binary from the developer and a guarantee that the binary has not been tampered with. Adversaries can copy the metadata and signature information from a signed program, then use it as a template for an unsigned program. Files with invalid code signatures will fail digital signature validation checks, but they may appear more legitimate to users and security tools may improperly handle these files.(Citation: Threatexpress MetaTwin 2017) Unlike [Code Signing](https://attack.mitre.org/techniques/T1553/002), this activity will not result in a valid signature.

ATT&CK tactics· 1

Defense Evasion

References

  1. https://attack.mitre.org/techniques/T1036/001
  2. https://threatexpress.com/blogs/2017/metatwin-borrowing-microsoft-metadata-and-digital-signatures-to-hide-binaries/
Sourced from MITRE ATT&CK Enterprise v14.1. Curated and contextualized for EU compliance use cases by Adam Lundqvist, Founder at SQUR.