Overview

overview

10

Static

static

10

996d745b09...5a.exe

windows7_x64

10

996d745b09...5a.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    996d745b0948add2ef943870d637afb46d4463432df4cb766509ecaa1982a35a

  • Size

    1.2MB

  • Sample

    220520-d9yzgabadn

  • MD5

    da81c76543b3f280abfaf1c04a820c8d

  • SHA1

    e746372c52ab53a7dcded6ffd497f10d3b84bda9

  • SHA256

    996d745b0948add2ef943870d637afb46d4463432df4cb766509ecaa1982a35a

  • SHA512

    8fe78aee184022b8a15646d1a847aed29e3bf463599d5b8b517a321cc876f53ebb170b03ccdddb2032a6ab420956bfd233c489e954044a93a4c7995ed41b3346

Score
10/10
darkcomet1evasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

1

C2

sadist.ddns.net:500

Mutex

DC_MUTEX-WDGJLC3

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    bg0tFwB3BTiD

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target

      996d745b0948add2ef943870d637afb46d4463432df4cb766509ecaa1982a35a

    • Size

      1.2MB

    • MD5

      da81c76543b3f280abfaf1c04a820c8d

    • SHA1

      e746372c52ab53a7dcded6ffd497f10d3b84bda9

    • SHA256

      996d745b0948add2ef943870d637afb46d4463432df4cb766509ecaa1982a35a

    • SHA512

      8fe78aee184022b8a15646d1a847aed29e3bf463599d5b8b517a321cc876f53ebb170b03ccdddb2032a6ab420956bfd233c489e954044a93a4c7995ed41b3346

    Score
    10/10
    darkcomet1evasionpersistencerattrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Modifies firewall policy service

      evasion

    • Executes dropped EXE

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

1
T1031

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

3
T1112

Hidden Files and Directories

2
T1158

Credential Access

Discovery

Query Registry

2
T1012

System Information Discovery

3
T1082

Peripheral Device Discovery

1
T1120

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks