General

  • Target

    6f520e24c288bcfd97376ff3365418438179a494a676798a9c56351bd42d5fb3

  • Size

    4.9MB

  • Sample

    241101-k194ps1jfr

  • MD5

    325d72ca61c441e5eda24a533fb9771e

  • SHA1

    f54eccb4118598ac4e51c6318ec91e5780ae4687

  • SHA256

    6f520e24c288bcfd97376ff3365418438179a494a676798a9c56351bd42d5fb3

  • SHA512

    d2d17feefd6cf6a28425ca5204ed1ce17475f7657cc73487a7ddc2edea470edb2f2e79b60c29944257f08033073c3e89cf4f11cf97b90d7bf812e9cea143df6c

  • 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

      6f520e24c288bcfd97376ff3365418438179a494a676798a9c56351bd42d5fb3

    • Size

      4.9MB

    • MD5

      325d72ca61c441e5eda24a533fb9771e

    • SHA1

      f54eccb4118598ac4e51c6318ec91e5780ae4687

    • SHA256

      6f520e24c288bcfd97376ff3365418438179a494a676798a9c56351bd42d5fb3

    • SHA512

      d2d17feefd6cf6a28425ca5204ed1ce17475f7657cc73487a7ddc2edea470edb2f2e79b60c29944257f08033073c3e89cf4f11cf97b90d7bf812e9cea143df6c

    • SSDEEP

      49152:jl5MTGChZpxtlBBgxchXb/zqP6DUtRgs5q289dAnSz44hnW1XgnYu6fYmPkMSx8E:

    • 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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks