Analysis

  • max time kernel
    172s
  • max time network
    180s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20221111-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
  • submitted
    21/11/2022, 23:21

General

  • Target
    cbcb0b77f06312894dfb1209aa5d967c58d248ecf6090a4e0c187290c013cabb.exe
  • Size 4.2MB
  • Sample221121-3bycqabc64
  • SHA256 cbcb0b77f06312894dfb1209aa5d967c58d248ecf6090a4e0c187290c013cabb
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • RMS

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

  • ACProtect 1.3x - 1.4x DLL software 2 IoCs

    Detects file using ACProtect software.

  • Executes dropped EXE 7 IoCs
  • Sets file to hidden 1 TTPs 1 IoCs

    Modifies file attributes to stop it showing in Explorer etc.

  • UPX packed file 3 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • Drops file in System32 directory 2 IoCs
  • Drops file in Windows directory 8 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 3 IoCs
  • Enumerates processes with tasklist 1 TTPs 1 IoCs
  • Kills process with taskkill 2 IoCs
  • Modifies registry class 1 IoCs
  • Runs .reg file with regedit 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 18 IoCs
  • Suspicious behavior: SetClipboardViewer 1 IoCs
  • Suspicious use of AdjustPrivilegeToken 8 IoCs
  • Suspicious use of WriteProcessMemory 64 IoCs
  • Views/modifies file attributes 1 TTPs 3 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\cbcb0b77f06312894dfb1209aa5d967c58d248ecf6090a4e0c187290c013cabb.exe
    "C:\Users\Admin\AppData\Local\Temp\cbcb0b77f06312894dfb1209aa5d967c58d248ecf6090a4e0c187290c013cabb.exe"
    1⤵
    • Checks computer location settings
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:4668
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\exes\io.vbs"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:3124
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\exes\setup.bat" "
        3⤵
        • Drops file in System32 directory
        • Drops file in Windows directory
        • Suspicious use of WriteProcessMemory
        PID:2832
        • C:\Windows\SysWOW64\reg.exe
          reg delete "HKLM\SYSTEM\Remote Manipulator System" /f
          4⤵
            PID:408
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /f /im rfusclient.exe
            4⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:4628
          • C:\Windows\SysWOW64\taskkill.exe
            taskkill /f /im rutserv.exe
            4⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:308
          • C:\Windows\SysWOW64\timeout.exe
            timeout 2
            4⤵
            • Delays execution with timeout.exe
            PID:224
          • C:\Windows\SysWOW64\tasklist.exe
            tasklist /FI "IMAGENAME eq wget.exe" /NH
            4⤵
            • Enumerates processes with tasklist
            • Suspicious use of AdjustPrivilegeToken
            PID:4128
          • C:\Windows\SysWOW64\findstr.exe
            findstr /i "wget.exe"
            4⤵
              PID:1316
            • C:\Windows\SysWOW64\timeout.exe
              timeout 3
              4⤵
              • Delays execution with timeout.exe
              PID:4324
            • C:\Windows\SysWOW64\regedit.exe
              regedit /s "regedit.reg"
              4⤵
              • Runs .reg file with regedit
              PID:3064
            • C:\Windows\SysWOW64\reg.exe
              REG ADD "HKEY_LOCAL_MACHINE\SYSTEM\Remote Manipulator System\v4\Server\Parameters" /v FUSClientPath /t REG_SZ /d "C:\Windows\en-US\DRVSTORE\Dism\ru-RU\security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rfusclient.exe" /f
              4⤵
                PID:3128
              • C:\Windows\SysWOW64\attrib.exe
                attrib +s +h "C:\Windows\en-US\DRVSTORE\Dism\ru-RU\security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\*.*"
                4⤵
                • Sets file to hidden
                • Drops file in Windows directory
                • Views/modifies file attributes
                PID:3228
              • C:\Windows\SysWOW64\attrib.exe
                attrib -s -h "C:\Windows\en-US\DRVSTORE\Dism\ru-RU\security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\vp8decoder.dll"
                4⤵
                • Drops file in Windows directory
                • Views/modifies file attributes
                PID:2308
              • C:\Windows\SysWOW64\attrib.exe
                attrib -s -h "C:\Windows\en-US\DRVSTORE\Dism\ru-RU\security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\vp8encoder.dll"
                4⤵
                • Drops file in Windows directory
                • Views/modifies file attributes
                PID:2348
              • C:\Windows\en-US\DRVSTORE\Dism\ru-RU\Security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rutserv.exe
                "rutserv.exe" /silentinstall
                4⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                • Suspicious use of AdjustPrivilegeToken
                PID:4700
              • C:\Windows\en-US\DRVSTORE\Dism\ru-RU\Security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rutserv.exe
                "rutserv.exe" /firewall
                4⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                PID:1288
              • C:\Windows\SysWOW64\reg.exe
                REG ADD "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet00setup\services\RManService" /v DisplayName /t REG_SZ /d "Microsoft Corporation" /f
                4⤵
                  PID:4032
                • C:\Windows\SysWOW64\reg.exe
                  REG ADD "HKEY_LOCAL_MACHINE\SYSTEM\ControlSet00setup\services\RManService" /v Description /t REG_SZ /d "Microsoft Windows" /f
                  4⤵
                    PID:3988
                  • C:\Windows\en-US\DRVSTORE\Dism\ru-RU\Security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rutserv.exe
                    rutserv.exe /start
                    4⤵
                    • Executes dropped EXE
                    • Suspicious behavior: EnumeratesProcesses
                    • Suspicious use of AdjustPrivilegeToken
                    PID:3904
                  • C:\Windows\SysWOW64\timeout.exe
                    timeout 3
                    4⤵
                    • Delays execution with timeout.exe
                    PID:3764
            • C:\Windows\en-US\DRVSTORE\Dism\ru-RU\Security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rutserv.exe
              C:\Windows\en-US\DRVSTORE\Dism\ru-RU\Security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rutserv.exe
              1⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              • Suspicious use of WriteProcessMemory
              PID:4488
              • C:\Windows\en-US\DRVSTORE\Dism\ru-RU\Security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rfusclient.exe
                C:\Windows\en-US\DRVSTORE\Dism\ru-RU\Security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rfusclient.exe /tray
                2⤵
                • Executes dropped EXE
                PID:3192
              • C:\Windows\en-US\DRVSTORE\Dism\ru-RU\Security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rfusclient.exe
                C:\Windows\en-US\DRVSTORE\Dism\ru-RU\Security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rfusclient.exe
                2⤵
                • Executes dropped EXE
                • Suspicious behavior: EnumeratesProcesses
                PID:1816
                • C:\Windows\en-US\DRVSTORE\Dism\ru-RU\Security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rfusclient.exe
                  C:\Windows\en-US\DRVSTORE\Dism\ru-RU\Security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rfusclient.exe /tray
                  3⤵
                  • Executes dropped EXE
                  • Suspicious behavior: SetClipboardViewer
                  PID:3732

            Network

                  MITRE ATT&CK Enterprise v6

                  Replay Monitor

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                  Downloads

                  bat.bat

                  • Path C:\Users\Admin\AppData\Local\Temp\exes\bat.bat
                  • Size 178B
                  • SHA256 3f35efb7d0ed5d56700451431d4d3626ef1cebf7289dbf75cda7123f53e91746
                  • MD5 SHA1 SHA512

                  bat.vbs

                  • Path C:\Users\Admin\AppData\Local\Temp\exes\bat.vbs
                  • Size 113B
                  • SHA256 9413f4a4084d653e2acd3ea80282a261d8356f2605ae7a502ef364c54d4ab2d8
                  • MD5 SHA1 SHA512

                  de.exe

                  • Path C:\Users\Admin\AppData\Local\Temp\exes\de.exe
                  • Size 98KB
                  • SHA256 507af2772c7740f66fd15211f260f7f1989e433b31367587812fce3f67679c51
                  • MD5 SHA1 SHA512 SSDEEP

                  io.vbs

                  • Path C:\Users\Admin\AppData\Local\Temp\exes\io.vbs
                  • Size 115B
                  • SHA256 fad0bbb55f7591b441b351fb693b128f2e384685bf576201d942c10e0047df4f
                  • MD5 SHA1 SHA512

                  regedit.reg

                  • Path C:\Users\Admin\AppData\Local\Temp\exes\regedit.reg
                  • Size 24KB
                  • SHA256 bddce3bcce882e9695872650a9887a5fb877fc967044426d11fc048a5896d1ad
                  • MD5 SHA1 SHA512 SSDEEP

                  rfusclient.exe

                  • Path C:\Users\Admin\AppData\Local\Temp\exes\rfusclient.exe
                  • Size 4.8MB
                  • SHA256 1e35b3107c8d02bd7184cae941b75dfb7d5fb674da6f30c7ed2cad58c0de2987
                  • MD5 SHA1 SHA512 SSDEEP

                  russian.lg

                  • Path C:\Users\Admin\AppData\Local\Temp\exes\russian.lg
                  • Size 48KB
                  • SHA256 ef247557be6f34aa3ec855e0d0a0367ae0660ff3104791e345363904428de7e8
                  • MD5 SHA1 SHA512 SSDEEP

                  rutserv.exe

                  • Path C:\Users\Admin\AppData\Local\Temp\exes\rutserv.exe
                  • Size 5.8MB
                  • SHA256 3525603566f45c7afcd6119d5181fbf1b6306ca8c44d12e29f72fdf3bca612f7
                  • MD5 SHA1 SHA512 SSDEEP

                  setup.bat

                  • Path C:\Users\Admin\AppData\Local\Temp\exes\setup.bat
                  • Size 14KB
                  • SHA256 e7053729708353f327cefdefc92b2fb3dae9c595b56427f9f80f2ad4c432aad3
                  • MD5 SHA1 SHA512 SSDEEP

                  vp8decoder.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\exes\vp8decoder.dll
                  • Size 151KB
                  • SHA256 7be9bbf87492a63833f6f2665e461d4e097e3326dec3e7984ecca8a916939843
                  • MD5 SHA1 SHA512 SSDEEP

                  vp8encoder.dll

                  • Path C:\Users\Admin\AppData\Local\Temp\exes\vp8encoder.dll
                  • Size 257KB
                  • SHA256 a1507cb1240e89bf4f3468f462a5befab762edac1540b0d5f4839c46b137859b
                  • MD5 SHA1 SHA512 SSDEEP

                  wget.exe

                  • Path C:\Users\Admin\AppData\Local\Temp\exes\wget.exe
                  • Size 392KB
                  • SHA256 a48ad33695a44de887bba8f2f3174fd8fb01a46a19e3ec9078b0118647ccf599
                  • MD5 SHA1 SHA512 SSDEEP

                  rfusclient.exe

                  • Path C:\Windows\en-US\DRVSTORE\Dism\ru-RU\Security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rfusclient.exe
                  • Size 4.8MB
                  • SHA256 1e35b3107c8d02bd7184cae941b75dfb7d5fb674da6f30c7ed2cad58c0de2987
                  • MD5 SHA1 SHA512 SSDEEP

                  rfusclient.exe

                  • Path C:\Windows\en-US\DRVSTORE\Dism\ru-RU\Security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rfusclient.exe
                  • Size 4.8MB
                  • SHA256 1e35b3107c8d02bd7184cae941b75dfb7d5fb674da6f30c7ed2cad58c0de2987
                  • MD5 SHA1 SHA512 SSDEEP

                  rfusclient.exe

                  • Path C:\Windows\en-US\DRVSTORE\Dism\ru-RU\Security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rfusclient.exe
                  • Size 4.8MB
                  • SHA256 1e35b3107c8d02bd7184cae941b75dfb7d5fb674da6f30c7ed2cad58c0de2987
                  • MD5 SHA1 SHA512 SSDEEP

                  rutserv.exe

                  • Path C:\Windows\en-US\DRVSTORE\Dism\ru-RU\Security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rutserv.exe
                  • Size 5.8MB
                  • SHA256 3525603566f45c7afcd6119d5181fbf1b6306ca8c44d12e29f72fdf3bca612f7
                  • MD5 SHA1 SHA512 SSDEEP

                  rutserv.exe

                  • Path C:\Windows\en-US\DRVSTORE\Dism\ru-RU\Security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rutserv.exe
                  • Size 5.8MB
                  • SHA256 3525603566f45c7afcd6119d5181fbf1b6306ca8c44d12e29f72fdf3bca612f7
                  • MD5 SHA1 SHA512 SSDEEP

                  rutserv.exe

                  • Path C:\Windows\en-US\DRVSTORE\Dism\ru-RU\Security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rutserv.exe
                  • Size 5.8MB
                  • SHA256 3525603566f45c7afcd6119d5181fbf1b6306ca8c44d12e29f72fdf3bca612f7
                  • MD5 SHA1 SHA512 SSDEEP

                  rutserv.exe

                  • Path C:\Windows\en-US\DRVSTORE\Dism\ru-RU\Security\ApplicationId\PolicyManagement\PolicyManagement\System\32\Web\Histoty\rutserv.exe
                  • Size 5.8MB
                  • SHA256 3525603566f45c7afcd6119d5181fbf1b6306ca8c44d12e29f72fdf3bca612f7
                  • MD5 SHA1 SHA512 SSDEEP