General

  • Target

    14f4b83a1fcb925d74e9956182b4a3d4270616642204f12c08a7b0dc0c0f54f6N

  • Size

    4.9MB

  • Sample

    240920-2ak6bs1fkd

  • MD5

    446d69d1d68f0c0ee6c5f6b1fc5fca90

  • SHA1

    63de6dc0d2b9adcb1dfb39f0209079bae1b2b0d7

  • SHA256

    14f4b83a1fcb925d74e9956182b4a3d4270616642204f12c08a7b0dc0c0f54f6

  • SHA512

    5a83eb3bae4aadbf01fd0b6632ffb7f2521d26c00dd60f63b0d782d267ceaa3b545d902803f26d9a3033a854fe447bddba95e68494eca84ff99835ef88da5d8a

  • SSDEEP

    49152:Ll5MTGChZpxtlBBgxchXb/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

      14f4b83a1fcb925d74e9956182b4a3d4270616642204f12c08a7b0dc0c0f54f6N

    • Size

      4.9MB

    • MD5

      446d69d1d68f0c0ee6c5f6b1fc5fca90

    • SHA1

      63de6dc0d2b9adcb1dfb39f0209079bae1b2b0d7

    • SHA256

      14f4b83a1fcb925d74e9956182b4a3d4270616642204f12c08a7b0dc0c0f54f6

    • SHA512

      5a83eb3bae4aadbf01fd0b6632ffb7f2521d26c00dd60f63b0d782d267ceaa3b545d902803f26d9a3033a854fe447bddba95e68494eca84ff99835ef88da5d8a

    • SSDEEP

      49152:Ll5MTGChZpxtlBBgxchXb/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