General

  • Target

    2efc423b76e4954b7311cb80771c1d8ff34db83b8a33a31efd21ceb1ff85111eN

  • Size

    4.9MB

  • Sample

    241003-se5wvsvdkd

  • MD5

    c352be4e4eadf26973f9bff1e60635b0

  • SHA1

    a4b01b3e58aafd467e23d2eaada670116d2f7971

  • SHA256

    2efc423b76e4954b7311cb80771c1d8ff34db83b8a33a31efd21ceb1ff85111e

  • SHA512

    a8471c5325c5d205adaa90aa51ea9b9dd08f8622a9cf3424c490818b1a0504447f84296e5fd2615544f8e2cb90fdd5a9d50f319387049162dd88137940174c8f

  • SSDEEP

    49152:rl5MTGChZpxtlBBgxchXb/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

      2efc423b76e4954b7311cb80771c1d8ff34db83b8a33a31efd21ceb1ff85111eN

    • Size

      4.9MB

    • MD5

      c352be4e4eadf26973f9bff1e60635b0

    • SHA1

      a4b01b3e58aafd467e23d2eaada670116d2f7971

    • SHA256

      2efc423b76e4954b7311cb80771c1d8ff34db83b8a33a31efd21ceb1ff85111e

    • SHA512

      a8471c5325c5d205adaa90aa51ea9b9dd08f8622a9cf3424c490818b1a0504447f84296e5fd2615544f8e2cb90fdd5a9d50f319387049162dd88137940174c8f

    • SSDEEP

      49152:rl5MTGChZpxtlBBgxchXb/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