General

  • Target

    ccc5b9b76a1bc6c55bef142f7269d99a128351775fd3e1cd8a289ff290bc9409N

  • Size

    4.9MB

  • Sample

    241018-vvwz1ayeqc

  • MD5

    b01f6f3d873ab05578a58c77de3325e0

  • SHA1

    8a0af4f893835a31fd5202c276c43b3a3e52d139

  • SHA256

    ccc5b9b76a1bc6c55bef142f7269d99a128351775fd3e1cd8a289ff290bc9409

  • SHA512

    8e564f46c0095bbcfe50bfd1b3043d3357f3afb41b6e030b2eb3790ca1a485007eec57f55928b4534104cd73594a805384370718eca48f6f2870937b311ad5f6

  • 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

      ccc5b9b76a1bc6c55bef142f7269d99a128351775fd3e1cd8a289ff290bc9409N

    • Size

      4.9MB

    • MD5

      b01f6f3d873ab05578a58c77de3325e0

    • SHA1

      8a0af4f893835a31fd5202c276c43b3a3e52d139

    • SHA256

      ccc5b9b76a1bc6c55bef142f7269d99a128351775fd3e1cd8a289ff290bc9409

    • SHA512

      8e564f46c0095bbcfe50bfd1b3043d3357f3afb41b6e030b2eb3790ca1a485007eec57f55928b4534104cd73594a805384370718eca48f6f2870937b311ad5f6

    • 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