Overview

overview

10

Static

static

10

6c445d3e37...ed.exe

windows7_x64

10

6c445d3e37...ed.exe

windows10_x64

10

Sharing

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General

  • Target

    6c445d3e373a83dc67c97af5e55948b974902f6b1d6926b5c391dfd477765eed

  • Size

    658KB

  • Sample

    210516-55k7xb75xe

  • MD5

    e6d7561303a87d68dda8787b5f5b8eda

  • SHA1

    54ac1069a6b0002240e144fa8f3011982f536649

  • SHA256

    6c445d3e373a83dc67c97af5e55948b974902f6b1d6926b5c391dfd477765eed

  • SHA512

    5017d317a5c8bd59f60bd1217e3b51ca936b02b2c8be511ad1638869aebe5f17d21d905890d8af7ed8de24f56c88bd24a33a271bf15105bb7cc507aa2119f77c

Score
10/10
darkcometguest16evasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

emrefsjd42.duckdns.org:1604

Mutex

DC_MUTEX-EDRQF35

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    zoNXPXjuLVxX

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target

      6c445d3e373a83dc67c97af5e55948b974902f6b1d6926b5c391dfd477765eed

    • Size

      658KB

    • MD5

      e6d7561303a87d68dda8787b5f5b8eda

    • SHA1

      54ac1069a6b0002240e144fa8f3011982f536649

    • SHA256

      6c445d3e373a83dc67c97af5e55948b974902f6b1d6926b5c391dfd477765eed

    • SHA512

      5017d317a5c8bd59f60bd1217e3b51ca936b02b2c8be511ad1638869aebe5f17d21d905890d8af7ed8de24f56c88bd24a33a271bf15105bb7cc507aa2119f77c

    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.

    • Deletes itself

    • Loads dropped DLL

    • Windows security modification

      evasiontrojan

    • Adds Run key to start application

      persistence

    • Drops file in System32 directory

    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