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General

  • Target

    2c6a98964579835577ce965c9b8b66bf1148cceba9dbb0ce710e74ecc5902808.exe

  • Size

    4.9MB

  • Sample

    241206-mnz43syqcn

  • MD5

    d35291f4c04427508ab9cb6be8eeb39f

  • SHA1

    1bcf8448820f26174b1a547247fdfc960059a70c

  • SHA256

    2c6a98964579835577ce965c9b8b66bf1148cceba9dbb0ce710e74ecc5902808

  • SHA512

    adf26805866dd0cd5f1e921dcd02cac9a98a9c9f6e3bfd3e21084e8707ad0081196434f3c75ffe558573faca64ec0884559362e0ac0fffa7ef905b93e6fd1b83

  • SSDEEP

    49152:bl5MTGChZpxtlBBgxchXb/zqP6DUtRgs5q289dAnSz44hnW1XgnYu6fYmPkMSx8f:n

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

      2c6a98964579835577ce965c9b8b66bf1148cceba9dbb0ce710e74ecc5902808.exe

    • Size

      4.9MB

    • MD5

      d35291f4c04427508ab9cb6be8eeb39f

    • SHA1

      1bcf8448820f26174b1a547247fdfc960059a70c

    • SHA256

      2c6a98964579835577ce965c9b8b66bf1148cceba9dbb0ce710e74ecc5902808

    • SHA512

      adf26805866dd0cd5f1e921dcd02cac9a98a9c9f6e3bfd3e21084e8707ad0081196434f3c75ffe558573faca64ec0884559362e0ac0fffa7ef905b93e6fd1b83

    • SSDEEP

      49152:bl5MTGChZpxtlBBgxchXb/zqP6DUtRgs5q289dAnSz44hnW1XgnYu6fYmPkMSx8f:n

    • Colibri Loader

      A loader sold as MaaS first seen in August 2021.

    • Colibri family

    • DcRat

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

    • Dcrat family

    • 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