Overview

overview

10

Static

static

ef878a9269...05.exe

windows7-x64

10

ef878a9269...05.exe

windows10-2004-x64

10

Sharing

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General

  • Target

    ef878a92695f129fdcbbe3fa24322aa28b25a178c5634e7986c912794df14c05

  • Size

    864KB

  • Sample

    221123-s7d9lsdc27

  • MD5

    17875d9e3865227c6ccaf732edc01906

  • SHA1

    8c35f0870026545d60ae68f488f8bb5b97a3da1d

  • SHA256

    ef878a92695f129fdcbbe3fa24322aa28b25a178c5634e7986c912794df14c05

  • SHA512

    a6fa0ac5b5846e0e34e2cc2fd22ceef56bc14cdd03dc0926b360927c438939dff64a2ca1564da6b93f5fbe115156809076cf10179c500379368dac612d22a14b

  • SSDEEP

    24576:eJJ/vxZRvmGa0/xHP8ueilAKw4uBhfmrlHj:w/JZRDzpHP8uf6pmdj

Score
10/10
darkcometdc8-23evasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

DC8-23

C2

dctx.duckdns.org:200

Mutex

DC_MUTEX-P8HGWPL

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    TBEQV3sBL45t

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Targets

    • Target

      ef878a92695f129fdcbbe3fa24322aa28b25a178c5634e7986c912794df14c05

    • Size

      864KB

    • MD5

      17875d9e3865227c6ccaf732edc01906

    • SHA1

      8c35f0870026545d60ae68f488f8bb5b97a3da1d

    • SHA256

      ef878a92695f129fdcbbe3fa24322aa28b25a178c5634e7986c912794df14c05

    • SHA512

      a6fa0ac5b5846e0e34e2cc2fd22ceef56bc14cdd03dc0926b360927c438939dff64a2ca1564da6b93f5fbe115156809076cf10179c500379368dac612d22a14b

    • SSDEEP

      24576:eJJ/vxZRvmGa0/xHP8ueilAKw4uBhfmrlHj:w/JZRDzpHP8uf6pmdj

    Score
    10/10
    darkcometdc8-23evasionpersistencerattrojan

    • 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

    • Executes dropped EXE

    • Sets file to hidden

      Modifies file attributes to stop it showing in Explorer etc.

      evasion

    • Loads dropped DLL

    • Uses the VBS compiler for execution

    • Adds Run key to start application

      persistence

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1
T1064

Persistence

Winlogon Helper DLL

1
T1004

Modify Existing Service

1
T1031

Hidden Files and Directories

2
T1158

Registry Run Keys / Startup Folder

1
T1060

Privilege Escalation

Defense Evasion

Modify Registry

4
T1112

Disabling Security Tools

1
T1089

Hidden Files and Directories

2
T1158

Scripting

1
T1064

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Tasks