Overview

overview

10

Static

static

10

9f95c22d51...65.exe

windows10-2004-x64

10

9f95c22d51...65.exe

windows11-21h2-x64

10

Analysis

  • max time kernel
    299s
  • max time network
    298s
  • platform
    windows11-21h2_x64
  • resource
    win11-20231215-en
  • resource tags

    arch:x64arch:x86image:win11-20231215-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    05-02-2024 23:34

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General

  • Target

    9f95c22d51882e238da73706c58c9903b4f8543b8dbc549c8b01f9d3b4210165.exe

  • Size

    659KB

  • MD5

    21cb738e372351de0abf0f5bc532ab2c

  • SHA1

    af006c081c76f91866f377059db52576478aab82

  • SHA256

    9f95c22d51882e238da73706c58c9903b4f8543b8dbc549c8b01f9d3b4210165

  • SHA512

    308150556c89f262b74130c0548c134bc1e0ad4e29dd04500e297f53b15988fb3f79cda8a0dafeb225a8ceac1bec5ccfd57a88d02d16dbb82e29d5d703e4cde8

  • SSDEEP

    12288:O9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/hy:aZ1xuVVjfFoynPaVBUR8f+kN10EBA

Score
10/10
darkcometsazanevasionpersistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Sazan

C2

sussysdfffdfff343.duckdns.org:1604

Mutex

DC_MUTEX-TUY24DX

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    TPTxFZiBzSR9

  • install

    true

  • offline_keylogger

    true

  • persistence

    true

  • reg_key

    MicroUpdate

Signatures

  • Darkcomet

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

    trojanratdarkcomet
  • Modifies WinLogon for persistence 2 TTPs 1 IoCs
    persistence
  • Modifies security service 2 TTPs 2 IoCs
    evasion
  • Windows security bypass 2 TTPs 4 IoCs
    evasiontrojan
  • Sets file to hidden 1 TTPs 2 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

    evasion
  • Executes dropped EXE 1 IoCs
  • Windows security modification 2 TTPs 2 IoCs
    evasiontrojan
  • Adds Run key to start application 2 TTPs 3 IoCs
    persistence
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • Modifies registry class 1 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 20 IoCs
  • System policy modification 1 TTPs 3 IoCs
    evasion
  • Views/modifies file attributes 1 TTPs 2 IoCs
    evasion

Processes

  • C:\Users\Admin\AppData\Local\Temp\9f95c22d51882e238da73706c58c9903b4f8543b8dbc549c8b01f9d3b4210165.exe
    "C:\Users\Admin\AppData\Local\Temp\9f95c22d51882e238da73706c58c9903b4f8543b8dbc549c8b01f9d3b4210165.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Adds Run key to start application
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1452
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\9f95c22d51882e238da73706c58c9903b4f8543b8dbc549c8b01f9d3b4210165.exe" +s +h
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3260
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp\9f95c22d51882e238da73706c58c9903b4f8543b8dbc549c8b01f9d3b4210165.exe" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:6116
    • C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3972
      • C:\Windows\SysWOW64\attrib.exe
        attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
        3⤵
        • Sets file to hidden
        • Views/modifies file attributes
        PID:4548
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
      2⤵
      • Modifies security service
      • Windows security bypass
      • Executes dropped EXE
      • Windows security modification
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      • System policy modification
      PID:4744
      • C:\Program Files (x86)\Internet Explorer\iexplore.exe
        "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
        3⤵
        • Modifies security service
        • Windows security bypass
        • Adds Run key to start application
        • Suspicious behavior: GetForegroundWindowSpam
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1988

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Create or Modify System Process

1
T1543

Windows Service

1
T1543.003

Defense Evasion

Modify Registry

6
T1112

Impair Defenses

2
T1562

Disable or Modify Tools

2
T1562.001

Hide Artifacts

2
T1564

Hidden Files and Directories

2
T1564.001

Credential Access

Discovery

System Information Discovery

1
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

Replay Monitor

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Downloads

  • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
    Filesize

    659KB

    MD5

    21cb738e372351de0abf0f5bc532ab2c

    SHA1

    af006c081c76f91866f377059db52576478aab82

    SHA256

    9f95c22d51882e238da73706c58c9903b4f8543b8dbc549c8b01f9d3b4210165

    SHA512

    308150556c89f262b74130c0548c134bc1e0ad4e29dd04500e297f53b15988fb3f79cda8a0dafeb225a8ceac1bec5ccfd57a88d02d16dbb82e29d5d703e4cde8

    Download Submit
  • memory/1452-0-0x0000000002910000-0x0000000002911000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1452-64-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

    Download
  • memory/1988-62-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

    Download
  • memory/4744-61-0x0000000002210000-0x0000000002211000-memory.dmp
    Filesize

    4KB

    Download
  • memory/4744-63-0x0000000000400000-0x00000000004B2000-memory.dmp
    Filesize

    712KB

    Download