General

  • Target

    6694ffc438d6355eda401b169039e4aa

  • Size

    274KB

  • Sample

    240119-b8w3dadfcp

  • MD5

    6694ffc438d6355eda401b169039e4aa

  • SHA1

    e0e4f656cb92a645975db6420c187edb51cc7191

  • SHA256

    6fa73224f2f164fc88fb703eaa71d2be8f044eb8662d6100de682dc6871a7236

  • SHA512

    d77ea8ff9ae90946a321631407e1a85ac4f082e04fd5dc0890e657e37b29cf5c77a484ff3c0b94a77f36365338e9180e165b7687b9aa14b3a265778183edac2e

  • SSDEEP

    6144:rApZYI1Gj+Ectos06yeVt0m4heAEWxziBUdPASAQIZ+kV82/WkSh8jhtz:WJttos06Rt0m4hhJsJVQ7kFPU4htz

Malware Config

Extracted

Family

darkcomet

Botnet

pc

C2

host12365485454.ddns.net:1604

192.168.0.125:1604

Mutex

DC_MUTEX-Q8QDW8F

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    locQi1ySlvoS

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    micro update

Targets

    • Target

      6694ffc438d6355eda401b169039e4aa

    • Size

      274KB

    • MD5

      6694ffc438d6355eda401b169039e4aa

    • SHA1

      e0e4f656cb92a645975db6420c187edb51cc7191

    • SHA256

      6fa73224f2f164fc88fb703eaa71d2be8f044eb8662d6100de682dc6871a7236

    • SHA512

      d77ea8ff9ae90946a321631407e1a85ac4f082e04fd5dc0890e657e37b29cf5c77a484ff3c0b94a77f36365338e9180e165b7687b9aa14b3a265778183edac2e

    • SSDEEP

      6144:rApZYI1Gj+Ectos06yeVt0m4heAEWxziBUdPASAQIZ+kV82/WkSh8jhtz:WJttos06Rt0m4hhJsJVQ7kFPU4htz

    • Darkcomet

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

    • Modifies WinLogon for persistence

    • Modifies firewall policy service

    • Modifies security service

    • Windows security bypass

    • Disables RegEdit via registry modification

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

    • Checks computer location settings

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

    • Deletes itself

    • Executes dropped EXE

    • Loads dropped DLL

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Windows security modification

    • Adds Run key to start application

    • Program crash

    • 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

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

2
T1543

Windows Service

2
T1543.003

Defense Evasion

Modify Registry

7
T1112

Impair Defenses

2
T1562

Disable or Modify Tools

2
T1562.001

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Tasks