General

  • Target

    3853eeaac891a4cefed467a48599ed56.exe

  • Size

    4MB

  • Sample

    221015-kh5q9sfdd7

  • MD5

    3853eeaac891a4cefed467a48599ed56

  • SHA1

    83611ff9b18910db848187cbddf9c907c044c6f1

  • SHA256

    6bdcafe45540c9492882c077ad121ff6abc704eb2e547aa776de18da65a51ef4

  • SHA512

    7f3f785358671ef8934c5b4376ddab04c54758b78938505a8b6826bcb595422755f45c826af4aff06e0273a2e4f4ecb8363843498a9cb102940e5b9c09802654

  • 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

Targets

    • Target

      3853eeaac891a4cefed467a48599ed56.exe

    • Size

      4MB

    • MD5

      3853eeaac891a4cefed467a48599ed56

    • SHA1

      83611ff9b18910db848187cbddf9c907c044c6f1

    • SHA256

      6bdcafe45540c9492882c077ad121ff6abc704eb2e547aa776de18da65a51ef4

    • SHA512

      7f3f785358671ef8934c5b4376ddab04c54758b78938505a8b6826bcb595422755f45c826af4aff06e0273a2e4f4ecb8363843498a9cb102940e5b9c09802654

    • 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.

    • Executes dropped EXE

    • Checks computer location settings

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

    • Checks whether UAC is enabled

    • Looks up external IP address via web service

      Uses a legitimate IP lookup service to find the infected system's external IP.

    • 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