General

  • Target

    13f0462af330f984e6bf4f78ca0fd568.exe

  • Size

    4MB

  • Sample

    221014-xsmdwsecak

  • MD5

    13f0462af330f984e6bf4f78ca0fd568

  • SHA1

    d4cade4a691d79c8edb40a02036dda11190e4795

  • SHA256

    98a6de25f542afaee3621feaf905566e3a5f60c99c5e1c051de2046cd803fb06

  • SHA512

    f04865953da22dd552373cb1a6e027ed2adbe87ad8f3fdbf59145d70fbc6de1310451824f45cc613400b14a4fe333ffe8cb8bdf65407badbcc4a9b76769a8ea8

  • 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

Targets

    • Target

      13f0462af330f984e6bf4f78ca0fd568.exe

    • Size

      4MB

    • MD5

      13f0462af330f984e6bf4f78ca0fd568

    • SHA1

      d4cade4a691d79c8edb40a02036dda11190e4795

    • SHA256

      98a6de25f542afaee3621feaf905566e3a5f60c99c5e1c051de2046cd803fb06

    • SHA512

      f04865953da22dd552373cb1a6e027ed2adbe87ad8f3fdbf59145d70fbc6de1310451824f45cc613400b14a4fe333ffe8cb8bdf65407badbcc4a9b76769a8ea8

    • 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.

    • Executes dropped EXE

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Checks whether UAC is enabled

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v6

Execution

Scheduled Task

1
T1053

Persistence

Scheduled Task

1
T1053

Privilege Escalation

Bypass User Account Control

1
T1088

Scheduled Task

1
T1053

Defense Evasion

Bypass User Account Control

1
T1088

Disabling Security Tools

1
T1089

Modify Registry

2
T1112

Discovery

Query Registry

1
T1012

System Information Discovery

3
T1082

Tasks