General

  • Target

    175b37895ceccd1ac88905f3c6459fc96e9f3f6172942f85b835391d24fdd6a6

  • Size

    4.9MB

  • Sample

    241008-xlzewavbrq

  • MD5

    303d8c66df0ffc6d289235da26a7e6d7

  • SHA1

    6bbf1deae5b1811adb32856f563e9014b7fc9661

  • SHA256

    175b37895ceccd1ac88905f3c6459fc96e9f3f6172942f85b835391d24fdd6a6

  • SHA512

    509668909753ea4a1143690b8367911195d40feb42c2e0bcfe8cbcaa796411622beb28728bbd527d4e033986703bb443c1a60b8b2caec880e8e509948f1fef00

  • SSDEEP

    49152:jl5MTGChZpxtlBBgxchXb/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

      175b37895ceccd1ac88905f3c6459fc96e9f3f6172942f85b835391d24fdd6a6

    • Size

      4.9MB

    • MD5

      303d8c66df0ffc6d289235da26a7e6d7

    • SHA1

      6bbf1deae5b1811adb32856f563e9014b7fc9661

    • SHA256

      175b37895ceccd1ac88905f3c6459fc96e9f3f6172942f85b835391d24fdd6a6

    • SHA512

      509668909753ea4a1143690b8367911195d40feb42c2e0bcfe8cbcaa796411622beb28728bbd527d4e033986703bb443c1a60b8b2caec880e8e509948f1fef00

    • SSDEEP

      49152:jl5MTGChZpxtlBBgxchXb/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