General

  • Target

    2025-03-22_b2a31ff4048cc5c9ec4e5d44e742a94b_ryuk

  • Size

    905KB

  • Sample

    250322-mv5cdavry5

  • MD5

    b2a31ff4048cc5c9ec4e5d44e742a94b

  • SHA1

    63892286dd4505971f1c061b70e21c6760bddc47

  • SHA256

    acfe65cf08cb8b8239b27d762f68f6602210b686cd88438a24f6c77d8524ff46

  • SHA512

    f74ce6a4767503ea1ce8d3f6fba89a9acf25abe3d6e53c2c0acbdba20dc56c834949203dd46ad10a06166912f0cd222b9ae9e3c9db8eb011672d86f17ee69c3f

  • SSDEEP

    12288:CthJIq+H3rw6R59ES7lWtE02rBzhzasvJZlDvRHeplOwFGwhMTSVTPEDSukrEOIe:CX+qS7ZGSL5FxJPp+ewwwh2SZAO

Malware Config

Targets

    • Target

      2025-03-22_b2a31ff4048cc5c9ec4e5d44e742a94b_ryuk

    • Size

      905KB

    • MD5

      b2a31ff4048cc5c9ec4e5d44e742a94b

    • SHA1

      63892286dd4505971f1c061b70e21c6760bddc47

    • SHA256

      acfe65cf08cb8b8239b27d762f68f6602210b686cd88438a24f6c77d8524ff46

    • SHA512

      f74ce6a4767503ea1ce8d3f6fba89a9acf25abe3d6e53c2c0acbdba20dc56c834949203dd46ad10a06166912f0cd222b9ae9e3c9db8eb011672d86f17ee69c3f

    • SSDEEP

      12288:CthJIq+H3rw6R59ES7lWtE02rBzhzasvJZlDvRHeplOwFGwhMTSVTPEDSukrEOIe:CX+qS7ZGSL5FxJPp+ewwwh2SZAO

    • FlawedGraceRAT

      FlawedGrace is a full-featured RAT written in C++.

    • Flawedgracerat family

    • FlawedGraceRat Backdoor

      Detects FlawedGraceRat x64 backdoor in memory.

    • FlawedGraceRat Loader

      Detects FlawedGraceRat x64 loader in memory.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Event Triggered Execution: Component Object Model Hijacking

      Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

    • Indicator Removal: File Deletion

      Adversaries may delete files left behind by the actions of their intrusion activity.

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks