General

  • Target

    e80d1f406fd2931d5531049905b14abc6ba500f13d02d7fb61465e97fffee142N

  • Size

    4.9MB

  • Sample

    240922-wm852asfln

  • MD5

    d62868c1af4b6fc4a73f8473b80d6490

  • SHA1

    f52db2fa7d9a8d0a8d93b936e2272ec37ad8c1de

  • SHA256

    e80d1f406fd2931d5531049905b14abc6ba500f13d02d7fb61465e97fffee142

  • SHA512

    6eae3dfcf157f56537989f5a33da3fb67791a7b2afc753d42e39838b6b0b403dd946cd625192ca66a58b2d9c69a1da01179c36fd500d34b56c6e6d4a3567a868

  • SSDEEP

    49152:Dl5MTGChZpxtlBBgxchXb/zqP6DUtRgs5q289dAnSz44hnW1XgnYu6fYmPkMSx8E:

Malware Config

Extracted

Family

colibri

Version

1.2.0

Botnet

Build1

C2

http://zpltcmgodhvvedxtfcygvbgjkvgvcguygytfigj.cc/gate.php

http://yugyuvyugguitgyuigtfyutdtoghghbbgyv.cx/gate.php

rc4.plain

Targets

    • Target

      e80d1f406fd2931d5531049905b14abc6ba500f13d02d7fb61465e97fffee142N

    • Size

      4.9MB

    • MD5

      d62868c1af4b6fc4a73f8473b80d6490

    • SHA1

      f52db2fa7d9a8d0a8d93b936e2272ec37ad8c1de

    • SHA256

      e80d1f406fd2931d5531049905b14abc6ba500f13d02d7fb61465e97fffee142

    • SHA512

      6eae3dfcf157f56537989f5a33da3fb67791a7b2afc753d42e39838b6b0b403dd946cd625192ca66a58b2d9c69a1da01179c36fd500d34b56c6e6d4a3567a868

    • SSDEEP

      49152:Dl5MTGChZpxtlBBgxchXb/zqP6DUtRgs5q289dAnSz44hnW1XgnYu6fYmPkMSx8E:

    • Colibri Loader

      A loader sold as MaaS first seen in August 2021.

    • DcRat

      DarkCrystal(DC) is a new .NET RAT active since June 2019 capable of loading additional plugins.

    • Process spawned unexpected child process

      This typically indicates the parent process was compromised via an exploit or macro.

    • UAC bypass

    • DCRat payload

      Detects payload of DCRat, commonly dropped by NSIS installers.

    • Command and Scripting Interpreter: PowerShell

      Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Checks whether UAC is enabled

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks