General

  • Target

    26ea7d480a77e3f9aaa9b52aaaa2e028fea4e286c53905b3e304ec96a34027ae

  • Size

    4.9MB

  • Sample

    240927-yk2paawfnr

  • MD5

    60562837aa924e28dab54be5c6decd4a

  • SHA1

    29e02ab31f9d2b86b2fe3b3bea05adbbaaa87990

  • SHA256

    26ea7d480a77e3f9aaa9b52aaaa2e028fea4e286c53905b3e304ec96a34027ae

  • SHA512

    a45d9d38a47b590e051ab9057d89d2f8abd00f4b148fa2c0bc77e0284bdb9ce0833ff3c0f7c7ae5cbbc80b181184e294e2c23d9bcaa41e3970af959c079c2b52

  • 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

      26ea7d480a77e3f9aaa9b52aaaa2e028fea4e286c53905b3e304ec96a34027ae

    • Size

      4.9MB

    • MD5

      60562837aa924e28dab54be5c6decd4a

    • SHA1

      29e02ab31f9d2b86b2fe3b3bea05adbbaaa87990

    • SHA256

      26ea7d480a77e3f9aaa9b52aaaa2e028fea4e286c53905b3e304ec96a34027ae

    • SHA512

      a45d9d38a47b590e051ab9057d89d2f8abd00f4b148fa2c0bc77e0284bdb9ce0833ff3c0f7c7ae5cbbc80b181184e294e2c23d9bcaa41e3970af959c079c2b52

    • 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

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks