Analysis

  • max time kernel
    152s
  • max time network
    167s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    11-04-2024 02:36

General

  • Target

    g2m.dll

  • Size

    100.0MB

  • MD5

    448de2bbd26b3dd436ad590497c36779

  • SHA1

    595f23c3e5ace472e888bd429107f901cd230d0b

  • SHA256

    4bcaba254171a6aed68dc2c893207b1f5ad3c2d2a650ff18a4d2d1cd0c7f0ed6

  • SHA512

    c747a4d02108fb07e5f967b50a912a181e8f9b664f47d22a6ac0ee785144e272c133bfbfea97d61d53396dd42158fb308c5452575a3d01d02ac06d759d52dbb6

  • SSDEEP

    196608:Mx0ivGTAslgbSYBsnBho/wnBvq+4rMOblxz6qYFS1qY2aubxi58/EUxFFVsv:MxzvfaEog+4rdbUTFVI

Malware Config

Extracted

Family

remcos

Botnet

RemoteHost

C2

flysafemyguy.duckdns.org:4047

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    remcos.exe

  • copy_folder

    Remcos

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • mouse_option

    false

  • mutex

    Rmc-872KQZ

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

    Remcos is a closed-source remote control and surveillance software.

  • Adds Run key to start application 2 TTPs 1 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Suspicious use of WriteProcessMemory 14 IoCs

Processes

  • C:\Windows\system32\regsvr32.exe
    regsvr32 /s C:\Users\Admin\AppData\Local\Temp\g2m.dll
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4264
    • C:\Windows\SysWOW64\regsvr32.exe
      /s C:\Users\Admin\AppData\Local\Temp\g2m.dll
      2⤵
      • Suspicious use of SetThreadContext
      • Suspicious use of WriteProcessMemory
      PID:4088
      • C:\Windows\SysWOW64\cmd.exe
        cmd.exe /C reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*Chrome" /t REG_SZ /d "rundll32.exe C:\Users\Admin\AppData\Roaming\VIVA_01.dll",EntryPoint /f & exit
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:732
        • C:\Windows\SysWOW64\reg.exe
          reg add "HKCU\SOFTWARE\Microsoft\Windows\CurrentVersion\Run" /v "*Chrome" /t REG_SZ /d "rundll32.exe C:\Users\Admin\AppData\Roaming\VIVA_01.dll",EntryPoint /f
          4⤵
          • Adds Run key to start application
          PID:1444
      • C:\Windows\SysWOW64\regsvr32.exe
        "C:\Windows\SysWOW64\regsvr32.exe"
        3⤵
          PID:2592
    • 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=4104 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:8
      1⤵
        PID:3276

      Network

      MITRE ATT&CK Matrix ATT&CK v13

      Persistence

      Boot or Logon Autostart Execution

      1
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Privilege Escalation

      Boot or Logon Autostart Execution

      1
      T1547

      Registry Run Keys / Startup Folder

      1
      T1547.001

      Defense Evasion

      Modify Registry

      1
      T1112

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/2592-29-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-11-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-7-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-5-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-28-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-53-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-27-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-51-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-50-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-12-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-13-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-14-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-15-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-16-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-17-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-18-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-19-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-20-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-21-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-22-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-23-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-24-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-25-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-26-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-52-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-6-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-9-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-30-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-31-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-32-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-33-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-34-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-35-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-36-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-37-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-38-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-39-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-40-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-41-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-42-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-43-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-44-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-45-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-46-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-47-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-48-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/2592-49-0x0000000000730000-0x00000000007B2000-memory.dmp
        Filesize

        520KB

      • memory/4088-4-0x0000000010000000-0x0000000010F8F000-memory.dmp
        Filesize

        15.6MB

      • memory/4088-3-0x0000000010000000-0x0000000010F8F000-memory.dmp
        Filesize

        15.6MB

      • memory/4088-1-0x0000000010000000-0x0000000010F8F000-memory.dmp
        Filesize

        15.6MB

      • memory/4088-0-0x0000000010000000-0x0000000010F8F000-memory.dmp
        Filesize

        15.6MB

      • memory/4088-10-0x0000000010000000-0x0000000010F8F000-memory.dmp
        Filesize

        15.6MB