Overview

overview

10

Static

static

10

0x00050000...71.exe

windows7_x64

10

0x00050000...71.exe

windows10-2004_x64

10

Sharing

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General

  • Target

    0x000500000001a4c4-71.dat

  • Size

    658KB

  • Sample

    220710-1nzefaffb3

  • MD5

    c775e905c28bb9cfaf4e0a52d69b311b

  • SHA1

    05a5b6692d1177dbb6f2ce92ebe9b399265790a5

  • SHA256

    c8c553c88f02526cf32cfeb3944803b2a3a12c0b2b95800491e657df6ba07fdb

  • SHA512

    01880de63e224e1806f018b24769431925c5d16ed632278de7fb3972237ac0f4be372bdeb184bc3c42f6ee583701b3039089d5f8f6019e1265c1eb7895d24514

Score
10/10
darkcometguest16evasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

sussysdfffdfff343.duckdns.org:1604

Mutex

DC_MUTEX-DPR96FP

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    UxV043A3qL1c

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target

      0x000500000001a4c4-71.dat

    • Size

      658KB

    • MD5

      c775e905c28bb9cfaf4e0a52d69b311b

    • SHA1

      05a5b6692d1177dbb6f2ce92ebe9b399265790a5

    • SHA256

      c8c553c88f02526cf32cfeb3944803b2a3a12c0b2b95800491e657df6ba07fdb

    • SHA512

      01880de63e224e1806f018b24769431925c5d16ed632278de7fb3972237ac0f4be372bdeb184bc3c42f6ee583701b3039089d5f8f6019e1265c1eb7895d24514

    Score
    10/10
    darkcometguest16evasionpersistencerattrojan

    • 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

    • 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

    • Suspicious use of SetThreadContext

    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