Overview

overview

10

Static

static

3

0aa53c306f...58.exe

windows7-x64

10

0aa53c306f...58.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    0aa53c306f231af2bc7097242847e6603b2856d97aa49b36cff179d645d1dd58.exe

  • Size

    3MB

  • Sample

    230706-q4nmrsbh23

  • MD5

    6fe53a251f6e9b6deda81229abf29e49

  • SHA1

    663063a6d3b72f8652f3bf01d5ba060a9ca4e1d2

  • SHA256

    0aa53c306f231af2bc7097242847e6603b2856d97aa49b36cff179d645d1dd58

  • SHA512

    e5b0c8263e9d3850ef592454b892fc09c39b5d91622f7ca5f40b0cb019c1ba2bd09a453c854b7583ae5bd8852f7f5c4af5a31e3f72ba4d530e55886acc1edac2

  • SSDEEP

    98304:3dxPig9KbLS7NYH0VwxA0WjgeG68Nq9Hr2839Y2YXC8bx7wwI3nwiY4gZcafQm6Y:3PigkiH3Fa

Score
10/10
darkcometjune 2023evasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

JUNE 2023

C2

timmy08.ddns.net:39399

Mutex

DC_MUTEX-23X1DZM

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    Rn451shW1Y0e

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    chrome

Targets

    • Target

      0aa53c306f231af2bc7097242847e6603b2856d97aa49b36cff179d645d1dd58.exe

    • Size

      3MB

    • MD5

      6fe53a251f6e9b6deda81229abf29e49

    • SHA1

      663063a6d3b72f8652f3bf01d5ba060a9ca4e1d2

    • SHA256

      0aa53c306f231af2bc7097242847e6603b2856d97aa49b36cff179d645d1dd58

    • SHA512

      e5b0c8263e9d3850ef592454b892fc09c39b5d91622f7ca5f40b0cb019c1ba2bd09a453c854b7583ae5bd8852f7f5c4af5a31e3f72ba4d530e55886acc1edac2

    • SSDEEP

      98304:3dxPig9KbLS7NYH0VwxA0WjgeG68Nq9Hr2839Y2YXC8bx7wwI3nwiY4gZcafQm6Y:3PigkiH3Fa

    Score
    10/10
    darkcometjune 2023evasionpersistencerattrojan

    • Darkcomet

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

      trojanratdarkcomet

    • Modifies WinLogon for persistence

      persistence

    • Modifies security service

      evasion

    • Windows security bypass

      evasiontrojan

    • Disables Task Manager via registry modification

      evasion

    • 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.

    • Deletes itself

    • Drops startup file

    • Executes dropped EXE

    • Loads dropped DLL

    • Windows security modification

      evasiontrojan

    • Adds Run key to start application

      persistence

    • Drops autorun.inf file

      Malware can abuse Windows Autorun to spread further via attached volumes.

    • Drops file in System32 directory

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Replication Through Removable Media

1
T1091

Execution

Scheduled Task

1
T1053

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

1
T1031

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Scheduled Task

1
T1053

Privilege Escalation

Scheduled Task

1
T1053

Defense Evasion

Modify Registry

5
T1112

Disabling Security Tools

2
T1089

Hidden Files and Directories

2
T1158

Credential Access

Discovery

Query Registry

4
T1012

System Information Discovery

4
T1082

Lateral Movement

Replication Through Removable Media

1
T1091

Collection

Exfiltration

Command and Control

Impact

Tasks