General

  • Target

    177b289140818d5260ee64ebacb5479e1e991a9f5cac38611b0beb6da393e30fN

  • Size

    4.9MB

  • Sample

    240917-1kzwsswhkm

  • MD5

    950254b6989e56a5d93d3f38445e1c60

  • SHA1

    4c6442eb7ddfdbb5d3fb34f53e50da45794cdaed

  • SHA256

    177b289140818d5260ee64ebacb5479e1e991a9f5cac38611b0beb6da393e30f

  • SHA512

    261732dc34213730d2f747cf4868ed82227b9af8be44d4d28b155aaaf6608c9b88cd832db03000c92aa395fbb62a11c2915b8b12ff8f1754ad682e1178bdaa22

  • 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

      177b289140818d5260ee64ebacb5479e1e991a9f5cac38611b0beb6da393e30fN

    • Size

      4.9MB

    • MD5

      950254b6989e56a5d93d3f38445e1c60

    • SHA1

      4c6442eb7ddfdbb5d3fb34f53e50da45794cdaed

    • SHA256

      177b289140818d5260ee64ebacb5479e1e991a9f5cac38611b0beb6da393e30f

    • SHA512

      261732dc34213730d2f747cf4868ed82227b9af8be44d4d28b155aaaf6608c9b88cd832db03000c92aa395fbb62a11c2915b8b12ff8f1754ad682e1178bdaa22

    • SSDEEP

      49152:jl5MTGChZpxtlBBgxchXb/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