Analysis

  • max time kernel
    151s
  • max time network
    158s
  • platform
    windows7_x64
  • resource
    win7-20220812-en
  • resource tags

    arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
  • submitted
    07/12/2022, 11:41

General

  • Target
    Swift copy.exe
  • Size 551KB
  • Sample221207-nte7jadb56
  • SHA256 f830ced2c0d06737392dddabd93828fa37430b0c6ec27cb7186c46d5e2f570b8
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Family
  • remcos

Botnet
  • UC

C2
  • ucremcz1.ddns.net:1823

Attributes
  • audio_folder

    MicRecords

  • audio_record_time

    5

  • connect_delay

    0

  • connect_interval

    1

  • copy_file

    BIN.exe

  • copy_folder

    BIN

  • delete_file

    false

  • hide_file

    false

  • hide_keylog_file

    false

  • install_flag

    false

  • install_path

    %AppData%

  • keylog_crypt

    true

  • keylog_file

    logs.dat

  • keylog_flag

    false

  • keylog_folder

    remcos

  • keylog_path

    %AppData%

  • mouse_option

    false

  • mutex

    Rmc-X402GF

  • screenshot_crypt

    false

  • screenshot_flag

    false

  • screenshot_folder

    Screenshots

  • screenshot_path

    %AppData%

  • screenshot_time

    10

  • startup_value

    bin

  • take_screenshot_option

    false

  • take_screenshot_time

    5

Signatures

  • Remcos

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

  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 2 IoCs
  • 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). Likely ransomware behaviour.

  • Suspicious behavior: MapViewOfSection 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 9 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Swift copy.exe
    "C:\Users\Admin\AppData\Local\Temp\Swift copy.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1720
    • C:\Users\Admin\AppData\Local\Temp\ipsfqzlahu.exe
      "C:\Users\Admin\AppData\Local\Temp\ipsfqzlahu.exe" C:\Users\Admin\AppData\Local\Temp\dyhjcyzqwc.d
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • Adds Run key to start application
      • Suspicious use of SetThreadContext
      • Suspicious behavior: MapViewOfSection
      • Suspicious use of WriteProcessMemory
      PID:576
      • C:\Users\Admin\AppData\Local\Temp\ipsfqzlahu.exe
        "C:\Users\Admin\AppData\Local\Temp\ipsfqzlahu.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:1052

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        dyhjcyzqwc.d

        • Path C:\Users\Admin\AppData\Local\Temp\dyhjcyzqwc.d
        • Size 7KB
        • SHA256 9efeb3bbb5701ac2b8638d431df3be1e59020970a208fa797f4acd25fc1bb2d5
        • MD5 SHA1 SHA512 SSDEEP

        eekgv.w

        • Path C:\Users\Admin\AppData\Local\Temp\eekgv.w
        • Size 469KB
        • SHA256 9b7ac0f4d5f3511aa4d3410d3e87cabc64469ba9ab8589fdd30ae61e8269e771
        • MD5 SHA1 SHA512 SSDEEP

        ipsfqzlahu.exe

        • Path C:\Users\Admin\AppData\Local\Temp\ipsfqzlahu.exe
        • Size 267KB
        • SHA256 dcb61c55ba74a131833f2b76c595b19ee447b05b744d19ab3900d74109eb5d98
        • MD5 SHA1 SHA512 SSDEEP

        ipsfqzlahu.exe

        • Path C:\Users\Admin\AppData\Local\Temp\ipsfqzlahu.exe
        • Size 267KB
        • SHA256 dcb61c55ba74a131833f2b76c595b19ee447b05b744d19ab3900d74109eb5d98
        • MD5 SHA1 SHA512 SSDEEP

        ipsfqzlahu.exe

        • Path C:\Users\Admin\AppData\Local\Temp\ipsfqzlahu.exe
        • Size 267KB
        • SHA256 dcb61c55ba74a131833f2b76c595b19ee447b05b744d19ab3900d74109eb5d98
        • MD5 SHA1 SHA512 SSDEEP

        ipsfqzlahu.exe

        • Path \Users\Admin\AppData\Local\Temp\ipsfqzlahu.exe
        • Size 267KB
        • SHA256 dcb61c55ba74a131833f2b76c595b19ee447b05b744d19ab3900d74109eb5d98
        • MD5 SHA1 SHA512 SSDEEP

        ipsfqzlahu.exe

        • Path \Users\Admin\AppData\Local\Temp\ipsfqzlahu.exe
        • Size 267KB
        • SHA256 dcb61c55ba74a131833f2b76c595b19ee447b05b744d19ab3900d74109eb5d98
        • MD5 SHA1 SHA512 SSDEEP

        memory/1052-66-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/1052-67-0x0000000000400000-0x000000000047F000-memory.dmp

        memory/1720-54-0x00000000762B1000-0x00000000762B3000-memory.dmp