General

  • Target

    2103ddb95fd9d29dcf0f532ae9baa5593b7ed02d27682ec0b727e3e4d9061c8f.exe

  • Size

    4.9MB

  • Sample

    241205-v2ts8a1jaj

  • MD5

    8be8a5d36bb940a1d6b70d3277ca420a

  • SHA1

    50e6780f3711ab913e56e1f159d34ef4e29e9bea

  • SHA256

    2103ddb95fd9d29dcf0f532ae9baa5593b7ed02d27682ec0b727e3e4d9061c8f

  • SHA512

    f02563d80839cf345cc8d360419c38f231f9055408afed0fe8da8f25b0b362fcb5640e5d0b7ee580d7c6df095c90923b74f45a532916245ce0314337f2a052b5

  • SSDEEP

    49152:bl5MTGChZpxtlBBgxchXb/zqP6DUtRgs5q289dAnSz44hnW1XgnYu6fYmPkMSx8X:v

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

      2103ddb95fd9d29dcf0f532ae9baa5593b7ed02d27682ec0b727e3e4d9061c8f.exe

    • Size

      4.9MB

    • MD5

      8be8a5d36bb940a1d6b70d3277ca420a

    • SHA1

      50e6780f3711ab913e56e1f159d34ef4e29e9bea

    • SHA256

      2103ddb95fd9d29dcf0f532ae9baa5593b7ed02d27682ec0b727e3e4d9061c8f

    • SHA512

      f02563d80839cf345cc8d360419c38f231f9055408afed0fe8da8f25b0b362fcb5640e5d0b7ee580d7c6df095c90923b74f45a532916245ce0314337f2a052b5

    • SSDEEP

      49152:bl5MTGChZpxtlBBgxchXb/zqP6DUtRgs5q289dAnSz44hnW1XgnYu6fYmPkMSx8X:v

    • 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

    • Suspicious use of SetThreadContext

MITRE ATT&CK Enterprise v15

Tasks