General

  • Target

    d76d0eede5de9005760ee65ef39708c43f9327d0ba9ebaefcd39906c951eb3d1N

  • Size

    4.9MB

  • Sample

    240920-2ttxkssfkb

  • MD5

    b21ada03a51a7236ecf51f3b094ba460

  • SHA1

    94767c26a9cf793e3fe7f095b8d548d12317e04a

  • SHA256

    d76d0eede5de9005760ee65ef39708c43f9327d0ba9ebaefcd39906c951eb3d1

  • SHA512

    93c38e3210cbb72e1dae14cb5656b066b8e6a719a1b749c194bdab9b129aaace59557bf1e05e611c52695e85fba84608ad5613762f9f87e7860b433cf2177e4f

  • SSDEEP

    49152:bl5MTGChZpxtlBBgxchXb/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

      d76d0eede5de9005760ee65ef39708c43f9327d0ba9ebaefcd39906c951eb3d1N

    • Size

      4.9MB

    • MD5

      b21ada03a51a7236ecf51f3b094ba460

    • SHA1

      94767c26a9cf793e3fe7f095b8d548d12317e04a

    • SHA256

      d76d0eede5de9005760ee65ef39708c43f9327d0ba9ebaefcd39906c951eb3d1

    • SHA512

      93c38e3210cbb72e1dae14cb5656b066b8e6a719a1b749c194bdab9b129aaace59557bf1e05e611c52695e85fba84608ad5613762f9f87e7860b433cf2177e4f

    • SSDEEP

      49152:bl5MTGChZpxtlBBgxchXb/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