Overview

overview

10

Static

static

8

39FDEE94A1...C4.exe

windows7_x64

10

39FDEE94A1...C4.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    4294211s
  • max time network
    146s
  • platform
    windows7_x64
  • resource
    win7-20220223-en
  • submitted
    09/03/2022, 10:57

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General

  • Target
    39FDEE94A127B3FF44D985DA275C9C843451D86E8B8C4.exe
  • Size 10.9MB
  • Sample220309-m188hsbbcj
  • SHA256 39fdee94a127b3ff44d985da275c9c843451d86e8b8c4eca28cef62e79cc4c1f
  • MD5 SHA1 SHA512
Score
10/10
rmsrattrojan

Malware Config

Signatures

  • RMS

    Remote Manipulator System (RMS) is a remote access tool developed by Russian organization TektonIT.

    trojanratrms
  • Executes dropped EXE 4 IoCs
  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • Loads dropped DLL 9 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Suspicious behavior: EnumeratesProcesses 12 IoCs
  • Suspicious use of AdjustPrivilegeToken 4 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of SetWindowsHookEx 8 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\39FDEE94A127B3FF44D985DA275C9C843451D86E8B8C4.exe
    "C:\Users\Admin\AppData\Local\Temp\39FDEE94A127B3FF44D985DA275C9C843451D86E8B8C4.exe"
    1⤵
    • Loads dropped DLL
    • Suspicious use of WriteProcessMemory
    PID:1788
    • C:\Users\Admin\AppData\Roaming\RMS Agent\69110\994A91B2E2\rfusclient.exe
      "C:\Users\Admin\AppData\Roaming\RMS Agent\69110\994A91B2E2\rfusclient.exe" -run_agent
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Loads dropped DLL
      • Suspicious use of WriteProcessMemory
      PID:1632
      • C:\Users\Admin\AppData\Roaming\RMS Agent\69110\994A91B2E2\rutserv.exe
        "C:\Users\Admin\AppData\Roaming\RMS Agent\69110\994A91B2E2\rutserv.exe"
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1664
        • C:\Users\Admin\AppData\Roaming\RMS Agent\69110\994A91B2E2\rutserv.exe
          "C:\Users\Admin\AppData\Roaming\RMS Agent\69110\994A91B2E2\rutserv.exe" -second
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:636
          • C:\Users\Admin\AppData\Roaming\RMS Agent\69110\994A91B2E2\rfusclient.exe
            "C:\Users\Admin\AppData\Roaming\RMS Agent\69110\994A91B2E2\rfusclient.exe" /tray /user
            5⤵
            • Executes dropped EXE
            • Checks computer location settings
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            PID:1816

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        memory/636-79-0x0000000000240000-0x0000000000241000-memory.dmp
        Download

        memory/1632-60-0x0000000000230000-0x0000000000231000-memory.dmp
        Download

        memory/1664-70-0x0000000000230000-0x0000000000231000-memory.dmp
        Download

        memory/1788-54-0x0000000075251000-0x0000000075253000-memory.dmp
        Download

        memory/1788-55-0x0000000000230000-0x0000000000231000-memory.dmp
        Download

        memory/1816-89-0x0000000000230000-0x0000000000231000-memory.dmp
        Download