Overview

overview

10

Static

static

10

vpn-sg.exe

windows7-x64

10

vpn-sg.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    141s
  • max time network
    123s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    03-04-2024 12:14

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General

  • Target

    vpn-sg.exe

  • Size

    756KB

  • MD5

    46312df6c5ddc1f1c31051b7a6ccd792

  • SHA1

    0cd971f850841246463b7ebd6fafa8090b443bd4

  • SHA256

    d484e27c6aa0cfd3f3be41616901d5eaded7ab35632035a22f94538981f403a9

  • SHA512

    b227329c43de53577af461c93aa7af27932457ad21eaa13e4ff53a0a5c6e2c4f99e12e5d0e8767d58e105e8cf619dfde28075995f32653b3e5cf54fd1fbfac6f

  • SSDEEP

    12288:F9HFJ9rJxRX1uVVjoaWSoynxdO1FVBaOiRZTERfIhNkNCCLo9Ek5C/h+:PZ1xuVVjfFoynPaVBUR8f+kN10EBI

Score
10/10
darkcometguest16persistencerattrojan

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

C2

45.61.152.61:1604

Mutex

DC_MUTEX-75H671P

Attributes
  • InstallPath

    MSDCSC\msdcsc.exe

  • gencode

    rvR4QwZQ1qCt

  • install

    true

  • offline_keylogger

    true

  • persistence

    false

  • 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
  • Checks computer location settings 2 TTPs 1 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Executes dropped EXE 1 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious use of AdjustPrivilegeToken 48 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\vpn-sg.exe
    "C:\Users\Admin\AppData\Local\Temp\vpn-sg.exe"
    1⤵
    • Modifies WinLogon for persistence
    • Checks computer location settings
    • Adds Run key to start application
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3060
    • C:\Users\Admin\Documents\MSDCSC\msdcsc.exe
      "C:\Users\Admin\Documents\MSDCSC\msdcsc.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of SetWindowsHookEx
      PID:1452

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

Privilege Escalation

Boot or Logon Autostart Execution

2
T1547

Registry Run Keys / Startup Folder

1
T1547.001

Winlogon Helper DLL

1
T1547.004

Defense Evasion

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
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

    756KB

    MD5

    46312df6c5ddc1f1c31051b7a6ccd792

    SHA1

    0cd971f850841246463b7ebd6fafa8090b443bd4

    SHA256

    d484e27c6aa0cfd3f3be41616901d5eaded7ab35632035a22f94538981f403a9

    SHA512

    b227329c43de53577af461c93aa7af27932457ad21eaa13e4ff53a0a5c6e2c4f99e12e5d0e8767d58e105e8cf619dfde28075995f32653b3e5cf54fd1fbfac6f

    Download Submit
  • memory/1452-13-0x0000000002180000-0x0000000002181000-memory.dmp
    Filesize

    4KB

    Download
  • memory/1452-15-0x0000000000400000-0x00000000004CA000-memory.dmp
    Filesize

    808KB

    Download
  • memory/3060-0-0x0000000002500000-0x0000000002501000-memory.dmp
    Filesize

    4KB

    Download
  • memory/3060-14-0x0000000000400000-0x00000000004CA000-memory.dmp
    Filesize

    808KB

    Download