Analysis

  • max time kernel
    40s
  • max time network
    114s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20231215-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20231215-enlocale:en-usos:windows10-2004-x64system
  • submitted
    31-12-2023 03:45

General

  • Target

    26d1beca6157aa1ea3ba22dfe6ed8bad.exe

  • Size

    697KB

  • MD5

    26d1beca6157aa1ea3ba22dfe6ed8bad

  • SHA1

    36838403ed23cc30c7294b5fc6d34045e8aa889d

  • SHA256

    e9347ac566eadef7764b0d50c64ca06561171f30392b1d37d1ee8cdde6c0b145

  • SHA512

    7e7832161497a3a78fde2636ec065761494ed753a7ecb405db2bc79b652a1077fc2a20fa04b28542d183b3004c9523a3ed7d24bbf697f4a6430a92f383d559f0

  • SSDEEP

    12288:/a4uMk2dgCRi4/OMhaHYD4zfTx+wFjd1g2iN:/aG4jMhaHYDWV+Qbg1

Malware Config

Extracted

Family

remcos

Version

1.7 Pro

Botnet

Host

C2

swrypaiii.ydns.eu:8976

Attributes
  • audio_folder

    audio

  • audio_path

    %AppData%

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    5

  • copy_file

    remcos.exe

  • copy_folder

    remcos

  • delete_file

    false

  • hide_file

    true

  • 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_xawtetfkrdejvrj

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screens

  • screenshot_path

    %AppData%

  • screenshot_time

    1

  • startup_value

    remcos

  • 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
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\26d1beca6157aa1ea3ba22dfe6ed8bad.exe
    "C:\Users\Admin\AppData\Local\Temp\26d1beca6157aa1ea3ba22dfe6ed8bad.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:3252
    • C:\Users\Admin\AppData\Local\Temp\26d1beca6157aa1ea3ba22dfe6ed8bad.exe
      "C:\Users\Admin\AppData\Local\Temp\26d1beca6157aa1ea3ba22dfe6ed8bad.exe"
      2⤵
      • Adds Run key to start application
      PID:4924
  • C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
    1⤵
      PID:5048
      • C:\Windows\SysWOW64\PING.EXE
        PING 127.0.0.1 -n 2
        2⤵
        • Runs ping.exe
        PID:4168
      • C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
        "C:\Users\Admin\AppData\Roaming\remcos\remcos.exe"
        2⤵
          PID:4600
          • C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
            "C:\Users\Admin\AppData\Roaming\remcos\remcos.exe"
            3⤵
              PID:3508

        Network

        MITRE ATT&CK Enterprise v15

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        • memory/3252-17-0x0000000074610000-0x0000000074DC0000-memory.dmp

          Filesize

          7.7MB

        • memory/3252-1-0x0000000000C60000-0x0000000000D14000-memory.dmp

          Filesize

          720KB

        • memory/3252-4-0x0000000005820000-0x00000000058B2000-memory.dmp

          Filesize

          584KB

        • memory/3252-5-0x0000000005A80000-0x0000000005A90000-memory.dmp

          Filesize

          64KB

        • memory/3252-6-0x00000000057B0000-0x00000000057BA000-memory.dmp

          Filesize

          40KB

        • memory/3252-7-0x00000000059B0000-0x0000000005A06000-memory.dmp

          Filesize

          344KB

        • memory/3252-2-0x00000000056A0000-0x000000000573C000-memory.dmp

          Filesize

          624KB

        • memory/3252-0-0x0000000074610000-0x0000000074DC0000-memory.dmp

          Filesize

          7.7MB

        • memory/3252-8-0x0000000005810000-0x0000000005822000-memory.dmp

          Filesize

          72KB

        • memory/3252-9-0x0000000074610000-0x0000000074DC0000-memory.dmp

          Filesize

          7.7MB

        • memory/3252-10-0x0000000005A80000-0x0000000005A90000-memory.dmp

          Filesize

          64KB

        • memory/3252-11-0x0000000007380000-0x000000000740E000-memory.dmp

          Filesize

          568KB

        • memory/3252-12-0x0000000006F40000-0x0000000006F60000-memory.dmp

          Filesize

          128KB

        • memory/3252-3-0x0000000005D30000-0x00000000062D4000-memory.dmp

          Filesize

          5.6MB

        • memory/3508-39-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB

        • memory/3508-42-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB

        • memory/3508-44-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB

        • memory/3508-38-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB

        • memory/4600-30-0x0000000005BB0000-0x0000000005BC0000-memory.dmp

          Filesize

          64KB

        • memory/4600-29-0x0000000074610000-0x0000000074DC0000-memory.dmp

          Filesize

          7.7MB

        • memory/4600-31-0x0000000005C40000-0x0000000005C52000-memory.dmp

          Filesize

          72KB

        • memory/4600-32-0x0000000074610000-0x0000000074DC0000-memory.dmp

          Filesize

          7.7MB

        • memory/4600-33-0x0000000005BB0000-0x0000000005BC0000-memory.dmp

          Filesize

          64KB

        • memory/4600-40-0x0000000074610000-0x0000000074DC0000-memory.dmp

          Filesize

          7.7MB

        • memory/4924-24-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB

        • memory/4924-21-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB

        • memory/4924-13-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB

        • memory/4924-16-0x0000000000400000-0x0000000000417000-memory.dmp

          Filesize

          92KB