Overview

overview

10

Static

static

1

QUOTATION ...PY.exe

windows7_x64

10

QUOTATION ...PY.exe

windows10_x64

10

Analysis

  • max time kernel
    150s
  • max time network
    147s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    08/02/2021, 06:37

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General

  • Target
    QUOTATION PDF_SCAN_COPY.exe
  • Size 198KB
  • Sample210208-x22bb3mhcn
  • SHA256 d968f2f9d3fc7604d16be3fdf8e4367f5ced695eb0c3706fecf04f7754c5cd5d
  • MD5 SHA1 SHA512
Score
10/10
remcospersistenceransomwarerat

Malware Config

Extracted

Family

  • remcos

C2

  • eileenwmsscm.duckdns.org:2558

Signatures

  • Remcos

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

    ratremcos
  • Executes dropped EXE 2 IoCs
  • Loads dropped DLL 4 IoCs
  • Adds Run key to start application 2 TTPs 5 IoCs
    persistence
  • Enumerates physical storage devices 1 TTPs

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

    ransomware
  • Suspicious use of SetThreadContext 2 IoCs
  • NSIS installer 6 IoCs
    installer
  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 16 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 17 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\QUOTATION PDF_SCAN_COPY.exe
    "C:\Users\Admin\AppData\Local\Temp\QUOTATION PDF_SCAN_COPY.exe"
    1⤵
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1032
    • C:\Users\Admin\AppData\Local\Temp\QUOTATION PDF_SCAN_COPY.exe
      "C:\Users\Admin\AppData\Local\Temp\QUOTATION PDF_SCAN_COPY.exe"
      2⤵
      • Adds Run key to start application
      • Modifies registry class
      • Suspicious use of WriteProcessMemory
      PID:1020
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:864
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"
          4⤵
          • Suspicious use of WriteProcessMemory
          PID:2000
          • C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
            C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
            5⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Suspicious use of SetThreadContext
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious behavior: MapViewOfSection
            • Suspicious use of WriteProcessMemory
            PID:1628
            • C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
              C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe
              6⤵
              • Executes dropped EXE
              • Adds Run key to start application
              • Suspicious use of SetWindowsHookEx
              PID:2124

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/1020-7-0x0000000000400000-0x0000000000421000-memory.dmp
        Download