Analysis

  • max time kernel
    48s
  • max time network
    148s
  • platform
    windows7_x64
  • resource
    win7-20231215-en
  • resource tags

    arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-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
  • 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 WriteProcessMemory 21 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:2528
    • C:\Users\Admin\AppData\Local\Temp\26d1beca6157aa1ea3ba22dfe6ed8bad.exe
      "C:\Users\Admin\AppData\Local\Temp\26d1beca6157aa1ea3ba22dfe6ed8bad.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:2596
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c ""C:\Users\Admin\AppData\Local\Temp\install.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:2696
        • C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
          "C:\Users\Admin\AppData\Roaming\remcos\remcos.exe"
          4⤵
            PID:2204
            • C:\Users\Admin\AppData\Roaming\remcos\remcos.exe
              "C:\Users\Admin\AppData\Roaming\remcos\remcos.exe"
              5⤵
                PID:740
      • C:\Windows\SysWOW64\PING.EXE
        PING 127.0.0.1 -n 2
        1⤵
        • Runs ping.exe
        PID:3016

      Network

      MITRE ATT&CK Enterprise v15

      Replay Monitor

      Loading Replay Monitor...

      Downloads

      • memory/740-57-0x0000000000400000-0x0000000000417000-memory.dmp

        Filesize

        92KB

      • memory/740-46-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/740-51-0x0000000000400000-0x0000000000417000-memory.dmp

        Filesize

        92KB

      • memory/740-53-0x0000000000400000-0x0000000000417000-memory.dmp

        Filesize

        92KB

      • memory/740-55-0x0000000000400000-0x0000000000417000-memory.dmp

        Filesize

        92KB

      • memory/2204-35-0x00000000001E0000-0x0000000000294000-memory.dmp

        Filesize

        720KB

      • memory/2204-52-0x0000000074E00000-0x00000000754EE000-memory.dmp

        Filesize

        6.9MB

      • memory/2204-40-0x0000000004CB0000-0x0000000004CF0000-memory.dmp

        Filesize

        256KB

      • memory/2204-39-0x0000000074E00000-0x00000000754EE000-memory.dmp

        Filesize

        6.9MB

      • memory/2204-36-0x0000000074E00000-0x00000000754EE000-memory.dmp

        Filesize

        6.9MB

      • memory/2204-37-0x0000000000310000-0x0000000000322000-memory.dmp

        Filesize

        72KB

      • memory/2204-38-0x0000000004CB0000-0x0000000004CF0000-memory.dmp

        Filesize

        256KB

      • memory/2528-7-0x0000000000690000-0x00000000006B0000-memory.dmp

        Filesize

        128KB

      • memory/2528-0-0x0000000000200000-0x00000000002B4000-memory.dmp

        Filesize

        720KB

      • memory/2528-1-0x0000000074E50000-0x000000007553E000-memory.dmp

        Filesize

        6.9MB

      • memory/2528-2-0x0000000004C50000-0x0000000004C90000-memory.dmp

        Filesize

        256KB

      • memory/2528-3-0x0000000000510000-0x0000000000522000-memory.dmp

        Filesize

        72KB

      • memory/2528-4-0x0000000074E50000-0x000000007553E000-memory.dmp

        Filesize

        6.9MB

      • memory/2528-5-0x0000000004C50000-0x0000000004C90000-memory.dmp

        Filesize

        256KB

      • memory/2528-20-0x0000000074E50000-0x000000007553E000-memory.dmp

        Filesize

        6.9MB

      • memory/2528-6-0x0000000005690000-0x000000000571E000-memory.dmp

        Filesize

        568KB

      • memory/2596-14-0x0000000000400000-0x0000000000417000-memory.dmp

        Filesize

        92KB

      • memory/2596-17-0x0000000000400000-0x0000000000417000-memory.dmp

        Filesize

        92KB

      • memory/2596-15-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

        Filesize

        4KB

      • memory/2596-19-0x0000000000400000-0x0000000000417000-memory.dmp

        Filesize

        92KB

      • memory/2596-13-0x0000000000400000-0x0000000000417000-memory.dmp

        Filesize

        92KB

      • memory/2596-8-0x0000000000400000-0x0000000000417000-memory.dmp

        Filesize

        92KB

      • memory/2596-10-0x0000000000400000-0x0000000000417000-memory.dmp

        Filesize

        92KB

      • memory/2596-11-0x0000000000400000-0x0000000000417000-memory.dmp

        Filesize

        92KB