Analysis

  • max time kernel
    147s
  • max time network
    146s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    27/04/2022, 00:02

General

  • Target
    5762F57BDB828CA779ACFDDE7B4C986F2562696C87EDF.exe
  • Size 16.9MB
  • Sample220427-abg2hsafhl
  • SHA256 5762f57bdb828ca779acfdde7b4c986f2562696c87edf9b26f2985df9c287749
  • MD5 SHA1 SHA512
Score
10/10

Malware Config

Signatures

  • RMS

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

  • Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs
  • Executes dropped EXE 4 IoCs
  • Checks computer location settings 2 TTPs 4 IoCs

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

  • Loads dropped DLL 4 IoCs
  • Drops file in System32 directory 10 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Modifies data under HKEY_USERS 45 IoCs
  • Modifies system certificate store 2 TTPs 3 IoCs
  • Suspicious behavior: EnumeratesProcesses 20 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of FindShellTrayWindow 3 IoCs
  • Suspicious use of SendNotifyMessage 3 IoCs
  • Suspicious use of SetWindowsHookEx 9 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5762F57BDB828CA779ACFDDE7B4C986F2562696C87EDF.exe
    "C:\Users\Admin\AppData\Local\Temp\5762F57BDB828CA779ACFDDE7B4C986F2562696C87EDF.exe"
    1⤵
    • Checks computer location settings
    • Suspicious use of WriteProcessMemory
    PID:1888
    • C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\rfusclient.exe
      "C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\rfusclient.exe" -run_agent
      2⤵
      • Executes dropped EXE
      • Checks computer location settings
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of WriteProcessMemory
      PID:3972
      • C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\rutserv.exe
        "C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\rutserv.exe" -run_agent
        3⤵
        • Executes dropped EXE
        • Checks computer location settings
        • Loads dropped DLL
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of SetWindowsHookEx
        PID:1868
        • C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\rutserv.exe
          "C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\rutserv.exe" -run_agent -second
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Drops file in System32 directory
          • Modifies data under HKEY_USERS
          • Modifies system certificate store
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of SetWindowsHookEx
          • Suspicious use of WriteProcessMemory
          PID:3432
          • C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\rfusclient.exe
            "C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\rfusclient.exe" /tray /user
            5⤵
            • Executes dropped EXE
            • Checks computer location settings
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SendNotifyMessage
            PID:224
  • C:\Windows\system32\svchost.exe
    C:\Windows\system32\svchost.exe -k netsvcs -p -s seclogon
    1⤵
    • Suspicious use of NtCreateUserProcessOtherParentProcess
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5068

Network

        MITRE ATT&CK Enterprise v6

        Replay Monitor

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        Downloads

        branding.ini

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\branding.ini
        • Size 364B
        • SHA256 f57efe43c5ecb38018d497ae3eb107e687c8ac1a3a1da7ddbf11d461be42bb55
        • MD5 SHA1 SHA512

        eventmsg.dll

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\eventmsg.dll
        • Size 51KB
        • SHA256 0526073f28a3b5999528bfa0e680d668922499124f783f02c52a3b25c367ef6d
        • MD5 SHA1 SHA512 SSDEEP

        libeay32.dll

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\libeay32.dll
        • Size 1.3MB
        • SHA256 4771b71a48190504094d104087dd431c1c40bde6fad0338a86aa42f7f2a457a5
        • MD5 SHA1 SHA512 SSDEEP

        libeay32.dll

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\libeay32.dll
        • Size 1.3MB
        • SHA256 4771b71a48190504094d104087dd431c1c40bde6fad0338a86aa42f7f2a457a5
        • MD5 SHA1 SHA512 SSDEEP

        libeay32.dll

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\libeay32.dll
        • Size 1.3MB
        • SHA256 4771b71a48190504094d104087dd431c1c40bde6fad0338a86aa42f7f2a457a5
        • MD5 SHA1 SHA512 SSDEEP

        logo.png

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\logo.png
        • Size 179KB
        • SHA256 6e5fc3669f51c3295348315c74e3a33a5eb641b461cbfa79c88a4cb5680ce398
        • MD5 SHA1 SHA512 SSDEEP

        rfusclient.exe

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\rfusclient.exe
        • Size 10.1MB
        • SHA256 cd734ca5611e02133bec7ff94d332a125c5957e7648f22549d2d65e7d7fd502d
        • MD5 SHA1 SHA512 SSDEEP

        rfusclient.exe

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\rfusclient.exe
        • Size 10.1MB
        • SHA256 cd734ca5611e02133bec7ff94d332a125c5957e7648f22549d2d65e7d7fd502d
        • MD5 SHA1 SHA512 SSDEEP

        rfusclient.exe

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\rfusclient.exe
        • Size 10.1MB
        • SHA256 cd734ca5611e02133bec7ff94d332a125c5957e7648f22549d2d65e7d7fd502d
        • MD5 SHA1 SHA512 SSDEEP

        rutserv.exe

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\rutserv.exe
        • Size 19.6MB
        • SHA256 54cdd1795816f16560e0e1ac8eecc74c50de6c22c446ec7cd1c2b0a26347de26
        • MD5 SHA1 SHA512 SSDEEP

        rutserv.exe

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\rutserv.exe
        • Size 19.6MB
        • SHA256 54cdd1795816f16560e0e1ac8eecc74c50de6c22c446ec7cd1c2b0a26347de26
        • MD5 SHA1 SHA512 SSDEEP

        rutserv.exe

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\rutserv.exe
        • Size 19.6MB
        • SHA256 54cdd1795816f16560e0e1ac8eecc74c50de6c22c446ec7cd1c2b0a26347de26
        • MD5 SHA1 SHA512 SSDEEP

        settings.dat

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\settings.dat
        • Size 11KB
        • SHA256 bb4369c750741a04ca9db4e976e5c24ca6622db29932546d4cee307cd33cf4d7
        • MD5 SHA1 SHA512 SSDEEP

        ssleay32.dll

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\ssleay32.dll
        • Size 337KB
        • SHA256 4f475bd6235d2f761f6c6dbdf3f4b2f35fc6a3787e6b1b28a1912e85cb9be2f6
        • MD5 SHA1 SHA512 SSDEEP

        ssleay32.dll

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\ssleay32.dll
        • Size 337KB
        • SHA256 4f475bd6235d2f761f6c6dbdf3f4b2f35fc6a3787e6b1b28a1912e85cb9be2f6
        • MD5 SHA1 SHA512 SSDEEP

        ssleay32.dll

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\ssleay32.dll
        • Size 337KB
        • SHA256 4f475bd6235d2f761f6c6dbdf3f4b2f35fc6a3787e6b1b28a1912e85cb9be2f6
        • MD5 SHA1 SHA512 SSDEEP

        vp8decoder.dll

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\vp8decoder.dll
        • Size 379KB
        • SHA256 b419ed0374e3789b4f83d4af601f796d958e366562a0aaea5d2f81e82abdcf33
        • MD5 SHA1 SHA512 SSDEEP

        vp8encoder.dll

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\vp8encoder.dll
        • Size 1.6MB
        • SHA256 11c7004851e6e6624158990dc8abe3aa517bcab708364d469589ad0ca3dba428
        • MD5 SHA1 SHA512 SSDEEP

        webmmux.dll

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\webmmux.dll
        • Size 259KB
        • SHA256 1d6407d7c7ffd2642ea7f97c86100514e8e44f58ff522475cb42bcc43a1b172b
        • MD5 SHA1 SHA512 SSDEEP

        webmvorbisdecoder.dll

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\webmvorbisdecoder.dll
        • Size 364KB
        • SHA256 c4683eb09d65d692ca347c0c21f72b086bd2faf733b13234f3a6b28444457d7d
        • MD5 SHA1 SHA512 SSDEEP

        webmvorbisencoder.dll

        • Path C:\Users\Admin\AppData\Roaming\RMS Agent\70120\372E684885\webmvorbisencoder.dll
        • Size 859KB
        • SHA256 63b4b5db4a96a8abec82b64034f482b433cd4168c960307ac5cc66d2fbf67ede
        • MD5 SHA1 SHA512 SSDEEP