General

  • Target
    Yeezus.rar
  • Size 10.2MB
  • Sample240111-retcdshcdj
  • SHA256 7f62f4def03ffd80426a25d462e04497eda6a8848529a1d8d51e7936ce6c1131
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Targets

    • Target
      Yeezus.rar
    • Size 10.2MB
    • SHA256 7f62f4def03ffd80426a25d462e04497eda6a8848529a1d8d51e7936ce6c1131
    • MD5 SHA1 SHA512 SSDEEP
    • Detect Umbral payload

    • Modifies Windows Defender Real-time Protection settings

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Windows security modification

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Target
      InjectionLibrary.dll
    • Size 78KB
    • SHA256 7919342e61f58303b1efe7bc3f2a612b717d64069c45eb53f0193218821d0016
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      ReaLTaiizor.dll
    • Size 10.3MB
    • SHA256 41e035e141999bf81756d05a33f92eb92f5d531b11f3bc8e6dad3c342af5cd11
    • MD5 SHA1 SHA512 SSDEEP
    Score
    1/10
    • Target
      Yeezus.exe
    • Size 8.3MB
    • SHA256 a32ad6995d0a15c0b85485b36a92385f866fd119eb5a2678403f8201bb89e18c
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    • Detect Umbral payload

    • Umbral

      Umbral stealer is an opensource moduler stealer written in C#.

    • Suspicious use of NtSetInformationThreadHideFromDebugger

MITRE ATT&CK Enterprise v15

Tasks