Overview

overview

10

Static

static

b0dc3dbef3...c0.exe

windows7-x64

10

b0dc3dbef3...c0.exe

windows10-2004-x64

10

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General

  • Target

    b0dc3dbef3c1ecec8099f9531b9c0b4b913dbc244bfb0a6c399b40c66c81ccc0

  • Size

    834KB

  • Sample

    221203-cbk5aaha5t

  • MD5

    642cc235b6552c524c89441d23053420

  • SHA1

    64ea644a56e14d2062f76374176785a45515b9fd

  • SHA256

    b0dc3dbef3c1ecec8099f9531b9c0b4b913dbc244bfb0a6c399b40c66c81ccc0

  • SHA512

    1ade8c82a148496a47c46dc3567deb20a98d512ead13f5cf533d22ef0fbfbcaf2c9ad691c95717d956533875ec0f6aafc68764842f00129b1370cd3b25d49883

  • SSDEEP

    24576:jG94QklbgNXrs5jkPENZI9k6Ts84PCx7/NBEn:jg4owbZI7cPc7Un

Score
10/10
darkcometguest2evasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest2

C2

myvault.no-ip.info:999

Mutex

DC_MUTEX-ZCH6G3K

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    L8vg77ELMAXt

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target

      b0dc3dbef3c1ecec8099f9531b9c0b4b913dbc244bfb0a6c399b40c66c81ccc0

    • Size

      834KB

    • MD5

      642cc235b6552c524c89441d23053420

    • SHA1

      64ea644a56e14d2062f76374176785a45515b9fd

    • SHA256

      b0dc3dbef3c1ecec8099f9531b9c0b4b913dbc244bfb0a6c399b40c66c81ccc0

    • SHA512

      1ade8c82a148496a47c46dc3567deb20a98d512ead13f5cf533d22ef0fbfbcaf2c9ad691c95717d956533875ec0f6aafc68764842f00129b1370cd3b25d49883

    • SSDEEP

      24576:jG94QklbgNXrs5jkPENZI9k6Ts84PCx7/NBEn:jg4owbZI7cPc7Un

    Score
    10/10
    darkcometguest2evasionpersistencerattrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Modifies firewall policy service

      evasion

    • Modifies security service

      evasion

    • Windows security bypass

      evasiontrojan

    • Disables RegEdit via registry modification

      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

    • Windows security modification

      evasiontrojan

    • Adds Run key to start application

      persistence
    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

2
T1031

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

6
T1112

Disabling Security Tools

2
T1089

Hidden Files and Directories

2
T1158

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks