Analysis

  • max time kernel
    145s
  • max time network
    152s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    16/05/2022, 02:06

General

  • Target
    2834f08114dd9a0583deb4d44ed36b6bf914d26cb9482c99cbed6e1c5dc4aa83.exe
  • Size 4.5MB
  • Sample220516-cjvzfsccbr
  • SHA256 2834f08114dd9a0583deb4d44ed36b6bf914d26cb9482c99cbed6e1c5dc4aa83
  • MD5 SHA1 SHA512

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.

  • ASPack v2.12-2.42 9 IoCs

    Detects executables packed with ASPack v2.12-2.42

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

    Modifies file attributes to stop it showing in Explorer etc.

  • UPX packed file 2 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 Program Files directory 28 IoCs
  • Launches sc.exe

    Sc.exe is a Windows utlilty to control services on the system.

  • Enumerates physical storage devices 1 TTPs

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

  • Delays execution with timeout.exe 2 IoCs
  • Kills process with taskkill 4 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 9 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 63 IoCs
  • Views/modifies file attributes 1 TTPs 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2834f08114dd9a0583deb4d44ed36b6bf914d26cb9482c99cbed6e1c5dc4aa83.exe
    "C:\Users\Admin\AppData\Local\Temp\2834f08114dd9a0583deb4d44ed36b6bf914d26cb9482c99cbed6e1c5dc4aa83.exe"
    1⤵
    • Checks computer location settings
    • Drops file in Program Files directory
    • Modifies registry class
    • Suspicious use of WriteProcessMemory
    PID:1984
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Program Files (x86)\System\install.vbs"
      2⤵
      • Checks computer location settings
      • Suspicious use of WriteProcessMemory
      PID:4668
      • C:\Windows\SysWOW64\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Program Files (x86)\System\install.bat" "
        3⤵
        • Suspicious use of WriteProcessMemory
        PID:4676
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Program Files (x86)\System" +H +S /S /D
          4⤵
          • Drops file in Program Files directory
          • Views/modifies file attributes
          PID:680
        • C:\Windows\SysWOW64\attrib.exe
          attrib "C:\Program Files (x86)\System\*.*" +H +S /S /D
          4⤵
          • Drops file in Program Files directory
          • Views/modifies file attributes
          PID:2240
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /f /im rutserv.exe
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1956
        • C:\Windows\SysWOW64\taskkill.exe
          Taskkill /f /im rutserv.exe
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:3664
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /f /im rfusclient.exe
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:2648
        • C:\Windows\SysWOW64\taskkill.exe
          Taskkill /f /im rfusclient.exe
          4⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:396
        • C:\Windows\SysWOW64\reg.exe
          reg delete "HKLM\SYSTEM\Remote Manipulator System" /f
          4⤵
            PID:3024
          • C:\Windows\SysWOW64\regedit.exe
            regedit /s "regedit.reg"
            4⤵
            • Runs .reg file with regedit
            PID:2560
          • C:\Windows\SysWOW64\timeout.exe
            timeout 2
            4⤵
            • Delays execution with timeout.exe
            PID:3672
          • C:\Program Files (x86)\System\rutserv.exe
            rutserv.exe /silentinstall
            4⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:1996
          • C:\Program Files (x86)\System\rutserv.exe
            rutserv.exe /firewall
            4⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of SetWindowsHookEx
            PID:1300
          • C:\Program Files (x86)\System\rutserv.exe
            rutserv.exe /start
            4⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:4048
          • C:\Windows\SysWOW64\sc.exe
            sc failure RManService reset= 0 actions= restart/1000/restart/1000/restart/1000
            4⤵
              PID:628
            • C:\Windows\SysWOW64\sc.exe
              sc config RManService obj= LocalSystem type= interact type= own
              4⤵
                PID:1960
              • C:\Windows\SysWOW64\sc.exe
                sc config RManService DisplayName= "Windows_Defender v6.3"
                4⤵
                  PID:3540
                • C:\Windows\SysWOW64\timeout.exe
                  timeout 120
                  4⤵
                  • Delays execution with timeout.exe
                  PID:808
          • C:\Program Files (x86)\System\rutserv.exe
            "C:\Program Files (x86)\System\rutserv.exe"
            1⤵
            • Executes dropped EXE
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:932
            • C:\Program Files (x86)\System\rfusclient.exe
              "C:\Program Files (x86)\System\rfusclient.exe"
              2⤵
              • Executes dropped EXE
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of WriteProcessMemory
              PID:4500
              • C:\Program Files (x86)\System\rfusclient.exe
                "C:\Program Files (x86)\System\rfusclient.exe" /tray
                3⤵
                • Executes dropped EXE
                • Suspicious behavior: SetClipboardViewer
                PID:2360
            • C:\Program Files (x86)\System\rfusclient.exe
              "C:\Program Files (x86)\System\rfusclient.exe" /tray
              2⤵
              • Executes dropped EXE
              PID:4156

          Network

                MITRE ATT&CK Enterprise v6

                Replay Monitor

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                Downloads

                install.bat

                • Path C:\Program Files (x86)\System\install.bat
                • Size 1KB
                • SHA256 8b1edb6951e1eda0670eff719f66919d91afa7e40d0976123df56699594d9e90
                • MD5 SHA1 SHA512

                install.vbs

                • Path C:\Program Files (x86)\System\install.vbs
                • Size 120B
                • SHA256 2696ee4302a85c6b4101fc6d1ce8e38b94fd9c2bbd1acc73b553576b3aacb92f
                • MD5 SHA1 SHA512

                mailsend.exe

                • Path C:\Program Files (x86)\System\mailsend.exe
                • Size 1.2MB
                • SHA256 80a1d0a15066c7af67cf5377e59e450c2a96018505236f8f3352173282b27ae4
                • MD5 SHA1 SHA512 SSDEEP

                regedit.reg

                • Path C:\Program Files (x86)\System\regedit.reg
                • Size 12KB
                • SHA256 f2c83f4cc13b0cd28090dd128ec5ff221681118f6100eddaead88526070ceecb
                • MD5 SHA1 SHA512 SSDEEP

                rfusclient.exe

                • Path C:\Program Files (x86)\System\rfusclient.exe
                • Size 1.5MB
                • SHA256 dc9d875e659421a51addd8e8a362c926369e84320ab0c5d8bbb1e4d12d372fc9
                • MD5 SHA1 SHA512 SSDEEP

                rfusclient.exe

                • Path C:\Program Files (x86)\System\rfusclient.exe
                • Size 1.5MB
                • SHA256 dc9d875e659421a51addd8e8a362c926369e84320ab0c5d8bbb1e4d12d372fc9
                • MD5 SHA1 SHA512 SSDEEP

                rfusclient.exe

                • Path C:\Program Files (x86)\System\rfusclient.exe
                • Size 1.5MB
                • SHA256 dc9d875e659421a51addd8e8a362c926369e84320ab0c5d8bbb1e4d12d372fc9
                • MD5 SHA1 SHA512 SSDEEP

                rfusclient.exe

                • Path C:\Program Files (x86)\System\rfusclient.exe
                • Size 1.5MB
                • SHA256 dc9d875e659421a51addd8e8a362c926369e84320ab0c5d8bbb1e4d12d372fc9
                • MD5 SHA1 SHA512 SSDEEP

                rutserv.exe

                • Path C:\Program Files (x86)\System\rutserv.exe
                • Size 1.7MB
                • SHA256 1699b9b4fc1724f9b0918b57ca58c453829a3935efd89bd4e9fa66b5e9f2b8a6
                • MD5 SHA1 SHA512 SSDEEP

                rutserv.exe

                • Path C:\Program Files (x86)\System\rutserv.exe
                • Size 1.7MB
                • SHA256 1699b9b4fc1724f9b0918b57ca58c453829a3935efd89bd4e9fa66b5e9f2b8a6
                • MD5 SHA1 SHA512 SSDEEP

                rutserv.exe

                • Path C:\Program Files (x86)\System\rutserv.exe
                • Size 1.7MB
                • SHA256 1699b9b4fc1724f9b0918b57ca58c453829a3935efd89bd4e9fa66b5e9f2b8a6
                • MD5 SHA1 SHA512 SSDEEP

                rutserv.exe

                • Path C:\Program Files (x86)\System\rutserv.exe
                • Size 1.7MB
                • SHA256 1699b9b4fc1724f9b0918b57ca58c453829a3935efd89bd4e9fa66b5e9f2b8a6
                • MD5 SHA1 SHA512 SSDEEP

                rutserv.exe

                • Path C:\Program Files (x86)\System\rutserv.exe
                • Size 1.7MB
                • SHA256 1699b9b4fc1724f9b0918b57ca58c453829a3935efd89bd4e9fa66b5e9f2b8a6
                • MD5 SHA1 SHA512 SSDEEP

                vp8decoder.dll

                • Path C:\Program Files (x86)\System\vp8decoder.dll
                • Size 155KB
                • SHA256 4c04d7968a9fe9d9258968d3a722263334bbf5f8af972f206a71f17fa293aa74
                • MD5 SHA1 SHA512 SSDEEP

                vp8encoder.dll

                • Path C:\Program Files (x86)\System\vp8encoder.dll
                • Size 593KB
                • SHA256 81af82019d9f45a697a8ca1788f2c5c0205af9892efd94879dedf4bc06db4172
                • MD5 SHA1 SHA512 SSDEEP

                memory/932-174-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/932-175-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/932-176-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/932-177-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/932-205-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/932-173-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/1300-164-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/1300-159-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/1300-160-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/1300-161-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/1300-162-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/1300-163-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/1996-154-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/1996-153-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/1996-152-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/1996-151-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/1996-156-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/1996-155-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/2360-201-0x0000000000400000-0x00000000009B6000-memory.dmp

                memory/2360-199-0x0000000000400000-0x00000000009B6000-memory.dmp

                memory/2360-200-0x0000000000400000-0x00000000009B6000-memory.dmp

                memory/2360-202-0x0000000000400000-0x00000000009B6000-memory.dmp

                memory/2360-203-0x0000000000400000-0x00000000009B6000-memory.dmp

                memory/2360-204-0x0000000000400000-0x00000000009B6000-memory.dmp

                memory/4048-168-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/4048-169-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/4048-167-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/4048-170-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/4048-171-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/4048-182-0x0000000000400000-0x0000000000AB9000-memory.dmp

                memory/4156-186-0x0000000000400000-0x00000000009B6000-memory.dmp

                memory/4156-188-0x0000000000400000-0x00000000009B6000-memory.dmp

                memory/4156-192-0x0000000000400000-0x00000000009B6000-memory.dmp

                memory/4156-184-0x0000000000400000-0x00000000009B6000-memory.dmp

                memory/4156-190-0x0000000000400000-0x00000000009B6000-memory.dmp

                memory/4500-187-0x0000000000400000-0x00000000009B6000-memory.dmp

                memory/4500-183-0x0000000000400000-0x00000000009B6000-memory.dmp

                memory/4500-185-0x0000000000400000-0x00000000009B6000-memory.dmp

                memory/4500-189-0x0000000000400000-0x00000000009B6000-memory.dmp

                memory/4500-191-0x0000000000400000-0x00000000009B6000-memory.dmp