Overview

overview

10

Static

static

1

Orderoffer.exe

windows7_x64

10

Orderoffer.exe

windows10_x64

10

Analysis

  • max time kernel
    148s
  • max time network
    151s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    23/02/2021, 06:58

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General

  • Target
    Orderoffer.exe
  • Size 723KB
  • Sample210223-6ttj8w2amn
  • SHA256 0961867a9b02bc083ea6bfebbfe22f2c65df60e429ff34b48f1a16c1dbd6c8fc
  • MD5 SHA1 SHA512
Score
10/10
remcospersistencerat

Malware Config

Extracted

Family

  • remcos

C2

  • bunkman212.ddns.net:2404

Signatures

  • Remcos

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

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

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

  • NSIS installer 8 IoCs
    installer
  • Suspicious behavior: EnumeratesProcesses 8 IoCs
  • Suspicious behavior: MapViewOfSection 2 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SendNotifyMessage 1 IoCs
  • Suspicious use of SetWindowsHookEx 1 IoCs
  • Suspicious use of WriteProcessMemory 22 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Orderoffer.exe
    "C:\Users\Admin\AppData\Local\Temp\Orderoffer.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of SetThreadContext
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious behavior: MapViewOfSection
    • Suspicious use of WriteProcessMemory
    PID:1684
    • C:\Users\Admin\AppData\Local\Temp\Orderoffer.exe
      "C:\Users\Admin\AppData\Local\Temp\Orderoffer.exe"
      2⤵
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:1920
      • C:\Windows\SysWOW64\WScript.exe
        "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\install.vbs"
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:1728
        • C:\Windows\SysWOW64\cmd.exe
          "C:\Windows\System32\cmd.exe" /c "C:\Users\Admin\AppData\Roaming\Remcos\remcos.exe"
          4⤵
          • Loads dropped DLL
          • Suspicious use of WriteProcessMemory
          PID:316
          • 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:268
            • 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 FindShellTrayWindow
              • Suspicious use of SendNotifyMessage
              • Suspicious use of SetWindowsHookEx
              PID:976

Network

        MITRE ATT&CK Enterprise v6

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        Downloads

        memory/976-25-0x0000000000400000-0x0000000000478000-memory.dmp
        Download

        memory/1684-2-0x00000000756A1000-0x00000000756A3000-memory.dmp
        Download

        memory/1728-12-0x0000000002620000-0x0000000002624000-memory.dmp
        Download

        memory/1920-10-0x0000000000400000-0x0000000000478000-memory.dmp
        Download