General

  • Target

    48a3b02137ae3342c85fedda2c805c6b13122260655b3d96d5e6f35dd6cf2621

  • Size

    4.9MB

  • Sample

    240919-y4wmdaycpb

  • MD5

    9f54373c7eefc48c1d4e8a8b50c3d485

  • SHA1

    c3f2f30da9c44a21b69ef16b647a899aa212d23a

  • SHA256

    48a3b02137ae3342c85fedda2c805c6b13122260655b3d96d5e6f35dd6cf2621

  • SHA512

    e4b8c96114aba0c7dd977e0a4fb6ade31f0503eea87e27de842fc4fa1f531fd49dc8d1ec762ffbc26f3474ccf8bbb7108a56aab9fb8bce6339dcd68bfecfe77b

  • 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

      48a3b02137ae3342c85fedda2c805c6b13122260655b3d96d5e6f35dd6cf2621

    • Size

      4.9MB

    • MD5

      9f54373c7eefc48c1d4e8a8b50c3d485

    • SHA1

      c3f2f30da9c44a21b69ef16b647a899aa212d23a

    • SHA256

      48a3b02137ae3342c85fedda2c805c6b13122260655b3d96d5e6f35dd6cf2621

    • SHA512

      e4b8c96114aba0c7dd977e0a4fb6ade31f0503eea87e27de842fc4fa1f531fd49dc8d1ec762ffbc26f3474ccf8bbb7108a56aab9fb8bce6339dcd68bfecfe77b

    • 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