Overview

overview

10

Static

static

10

vpn-sg.exe

windows7-x64

10

vpn-sg.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    148s
  • max time network
    145s
  • 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 11:48

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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:3088
    • 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:4100
  • C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
    "C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=3644 --field-trial-handle=3084,i,4016110471176367543,14287608422419064331,262144 --variations-seed-version /prefetch:8
    1⤵
      PID:3144

    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/3088-0-0x00000000022C0000-0x00000000022C1000-memory.dmp
      Filesize

      4KB

      Download
    • memory/3088-14-0x0000000000400000-0x00000000004CA000-memory.dmp
      Filesize

      808KB

      Download
    • memory/4100-13-0x00000000007F0000-0x00000000007F1000-memory.dmp
      Filesize

      4KB

      Download
    • memory/4100-15-0x0000000000400000-0x00000000004CA000-memory.dmp
      Filesize

      808KB

      Download