Analysis

  • max time kernel
    156s
  • max time network
    159s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20240226-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
  • submitted
    10/04/2024, 09:31

General

  • Target

    0a9babd846b1edf99e75f3c9de492c6341f9ca9a8e91851ad323bf8f325f9799.exe

  • Size

    686KB

  • MD5

    51da9d817874e8eb7020e708e263f79a

  • SHA1

    2f175ccb80f9103865bf89c0c9ea7754a6d99ba3

  • SHA256

    0a9babd846b1edf99e75f3c9de492c6341f9ca9a8e91851ad323bf8f325f9799

  • SHA512

    366875c7f4af27f74c7603fed936bbb9ecb0f6bf2e37b2ff9f00643ab1df2753930721c41ac09cce882ca577e98ad369adb7658759f34070bc165c3aeb8de82b

  • SSDEEP

    12288:X5XDpqFdFi3XnNdPPI9OREbw9UdzHgbtTT4mNBMFJDaa:JXDcbs3XNdPPIUWsbtTT4oeFJDaa

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Harry

C2

newremc22.ddns.net:2717

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • 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

    true

  • install_path

    %AppData%

  • keylog_crypt

    false

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    remcos_qvoysmnedqksues

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    bin

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 2 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 2 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 27 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\0a9babd846b1edf99e75f3c9de492c6341f9ca9a8e91851ad323bf8f325f9799.exe
    "C:\Users\Admin\AppData\Local\Temp\0a9babd846b1edf99e75f3c9de492c6341f9ca9a8e91851ad323bf8f325f9799.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3264
    • C:\Users\Admin\AppData\Local\Temp\0a9babd846b1edf99e75f3c9de492c6341f9ca9a8e91851ad323bf8f325f9799.exe
      "C:\Users\Admin\AppData\Local\Temp\0a9babd846b1edf99e75f3c9de492c6341f9ca9a8e91851ad323bf8f325f9799.exe"
      2⤵
      • Checks computer location settings
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:2732
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:3432
        • C:\Windows\SysWOW64\PING.EXE
          PING 127.0.0.1 -n 2
          4⤵
          • Runs ping.exe
          PID:5016
        • C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
          "C:\Users\Admin\AppData\Roaming\remcos\remcos.exe"
          4⤵
          • Executes dropped EXE
          • Suspicious use of SetThreadContext
          • Suspicious use of WriteProcessMemory
          PID:956
          • C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
            "C:\Users\Admin\AppData\Roaming\remcos\remcos.exe"
            5⤵
            • Executes dropped EXE
            • Adds Run key to start application
            • Suspicious use of SetWindowsHookEx
            PID:4780

Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • C:\Users\Admin\AppData\Local\Temp\install.bat

          Filesize

          99B

          MD5

          76c1687d97dfdbcea62ef1490bec5001

          SHA1

          5f4d1aeafa7d840cde67b76f97416dd68efd1bed

          SHA256

          79f04ea049979ffd2232c459fdd57fae97a5255aea9b4a2c7dce7ead856f37a4

          SHA512

          da250f0628632a644f159d818a82a8b9cca8224e46843bddbe0f6f9c32a2d04f7736a620af49ab6d77616317ca7d68285e60043965fe86c03d940835bd30a925

        • C:\Users\Admin\AppData\Roaming\remcos\remcos.exe

          Filesize

          686KB

          MD5

          51da9d817874e8eb7020e708e263f79a

          SHA1

          2f175ccb80f9103865bf89c0c9ea7754a6d99ba3

          SHA256

          0a9babd846b1edf99e75f3c9de492c6341f9ca9a8e91851ad323bf8f325f9799

          SHA512

          366875c7f4af27f74c7603fed936bbb9ecb0f6bf2e37b2ff9f00643ab1df2753930721c41ac09cce882ca577e98ad369adb7658759f34070bc165c3aeb8de82b

        • memory/956-38-0x0000000074DC0000-0x0000000075570000-memory.dmp

          Filesize

          7.7MB

        • memory/956-30-0x0000000005480000-0x0000000005490000-memory.dmp

          Filesize

          64KB

        • memory/956-29-0x0000000074DC0000-0x0000000075570000-memory.dmp

          Filesize

          7.7MB

        • memory/956-28-0x0000000005480000-0x0000000005490000-memory.dmp

          Filesize

          64KB

        • memory/956-27-0x0000000074DC0000-0x0000000075570000-memory.dmp

          Filesize

          7.7MB

        • memory/2732-12-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB

        • memory/2732-22-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB

        • memory/2732-17-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB

        • memory/2732-15-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB

        • memory/3264-7-0x0000000074DC0000-0x0000000075570000-memory.dmp

          Filesize

          7.7MB

        • memory/3264-4-0x0000000005BA0000-0x0000000005BB0000-memory.dmp

          Filesize

          64KB

        • memory/3264-10-0x00000000074B0000-0x000000000754C000-memory.dmp

          Filesize

          624KB

        • memory/3264-16-0x0000000074DC0000-0x0000000075570000-memory.dmp

          Filesize

          7.7MB

        • memory/3264-9-0x0000000007300000-0x000000000739C000-memory.dmp

          Filesize

          624KB

        • memory/3264-8-0x0000000005BA0000-0x0000000005BB0000-memory.dmp

          Filesize

          64KB

        • memory/3264-1-0x0000000074DC0000-0x0000000075570000-memory.dmp

          Filesize

          7.7MB

        • memory/3264-6-0x0000000005F90000-0x0000000005FA0000-memory.dmp

          Filesize

          64KB

        • memory/3264-5-0x0000000005970000-0x000000000597A000-memory.dmp

          Filesize

          40KB

        • memory/3264-11-0x0000000007570000-0x000000000758E000-memory.dmp

          Filesize

          120KB

        • memory/3264-3-0x00000000059F0000-0x0000000005A82000-memory.dmp

          Filesize

          584KB

        • memory/3264-2-0x0000000005FA0000-0x0000000006544000-memory.dmp

          Filesize

          5.6MB

        • memory/3264-0-0x0000000000EB0000-0x0000000000F62000-memory.dmp

          Filesize

          712KB

        • memory/4780-37-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB

        • memory/4780-35-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB

        • memory/4780-40-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB

        • memory/4780-42-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB