General

  • Target

    68e9767a80e49cdbca8e6d8cb26867aa

  • Size

    3.9MB

  • Sample

    240119-3heh7agaf6

  • MD5

    68e9767a80e49cdbca8e6d8cb26867aa

  • SHA1

    b6125fdec846e62cde9d65b6af224d9495cd190d

  • SHA256

    f91fa2953c6f7d35429a38ff474e1345da76a29c7a90c1c9b9380d9b09d8eead

  • SHA512

    510f4a2d309a3fdbcf40e4652b7ad5402a57fd11bd03a4966fb66c0ecf6ce49c93680d49a18afa99cc31871ac0381ccb64bc39d912f2c16d7f43161042cf7220

  • SSDEEP

    98304:fnsmtk2aqEIPmLgtC47Ik66NWtZdtzJ9RLkC3COU:vLG8mcA+IJpDV3M

Malware Config

Extracted

Family

darkcomet

Botnet

Main

C2

whp.sytes.net:1157

Mutex

DC_MUTEX-Z0KBHP5

Attributes
  • InstallPath

    MSDCSC\main.exe

  • gencode

    6SFPopLHSquT

  • install

    true

  • offline_keylogger

    true

  • password

    123

  • persistence

    true

  • reg_key

    main

Targets

    • Target

      68e9767a80e49cdbca8e6d8cb26867aa

    • Size

      3.9MB

    • MD5

      68e9767a80e49cdbca8e6d8cb26867aa

    • SHA1

      b6125fdec846e62cde9d65b6af224d9495cd190d

    • SHA256

      f91fa2953c6f7d35429a38ff474e1345da76a29c7a90c1c9b9380d9b09d8eead

    • SHA512

      510f4a2d309a3fdbcf40e4652b7ad5402a57fd11bd03a4966fb66c0ecf6ce49c93680d49a18afa99cc31871ac0381ccb64bc39d912f2c16d7f43161042cf7220

    • SSDEEP

      98304:fnsmtk2aqEIPmLgtC47Ik66NWtZdtzJ9RLkC3COU:vLG8mcA+IJpDV3M

    • Darkcomet

      DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.

    • Modifies WinLogon for persistence

    • Identifies VirtualBox via ACPI registry values (likely anti-VM)

    • Checks BIOS information in registry

      BIOS information is often read in order to detect sandboxing environments.

    • Checks computer location settings

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

    • Executes dropped EXE

    • Identifies Wine through registry keys

      Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

    • Loads dropped DLL

    • Adds Run key to start application

    • Suspicious use of NtSetInformationThreadHideFromDebugger

    • Suspicious use of SetThreadContext

MITRE ATT&CK Matrix ATT&CK v13

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Defense Evasion

Modify Registry

2
T1112

Virtualization/Sandbox Evasion

2
T1497

Discovery

Query Registry

6
T1012

Virtualization/Sandbox Evasion

2
T1497

System Information Discovery

5
T1082

Tasks