Overview

overview

10

Static

static

10

61aa788c92...dc.exe

windows7-x64

10

61aa788c92...dc.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    61aa788c92173825ed5c7898d6b475fb7263851324dd2e0051ef6691a42466dc

  • Size

    658KB

  • Sample

    220730-y9rwdafac6

  • MD5

    674f4d8ef4964657adf1aa84d1a4bd22

  • SHA1

    fd837d847f4840edb6cc1218f1ea59a7813bfc96

  • SHA256

    61aa788c92173825ed5c7898d6b475fb7263851324dd2e0051ef6691a42466dc

  • SHA512

    eea4f665c5233d8ecfaecf3fbc59b52d9a5dc62b8ce4d2c17c261d53d75841756df27a1f1ae96d63bcade4bd6213599d92f975d5df809b7669a47ca4a7126d84

Score
10/10
darkcometguest16evasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

cometka321.ddns.net:1604

Mutex

DC_MUTEX-JZ5G2G4

Attributes
  • InstallPath

    Windows\msdcsc.exe

  • gencode

    TjzE59HsqfK5

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    WindowsUpdate

Targets

    • Target

      61aa788c92173825ed5c7898d6b475fb7263851324dd2e0051ef6691a42466dc

    • Size

      658KB

    • MD5

      674f4d8ef4964657adf1aa84d1a4bd22

    • SHA1

      fd837d847f4840edb6cc1218f1ea59a7813bfc96

    • SHA256

      61aa788c92173825ed5c7898d6b475fb7263851324dd2e0051ef6691a42466dc

    • SHA512

      eea4f665c5233d8ecfaecf3fbc59b52d9a5dc62b8ce4d2c17c261d53d75841756df27a1f1ae96d63bcade4bd6213599d92f975d5df809b7669a47ca4a7126d84

    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

    • Disables RegEdit via registry modification

      evasion

    • Disables Task Manager 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

7
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