Analysis

  • max time kernel
    148s
  • max time network
    147s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260130-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260130-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    29/04/2026, 10:06

General

  • Target
    Revo.Uninstaller.Pro.v5.4.5/Revo.Uninstaller.Pro.v5.4.5.exe
  • Size 21.1MB
  • Sample260429-l4869aev9k
  • SHA256 e5d67f902f50caaf4b0fc60d765ae7dce2d2b87ade0e63fe740291b1ad25d298
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Drops file in Drivers directory 4 IoCs
  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Event Triggered Execution: Component Object Model Hijacking 1 TTPs

    Adversaries may establish persistence by executing malicious content triggered by hijacked references to Component Object Model (COM) objects.

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 14 IoCs
  • Modifies system executable filetype association 2 TTPs 6 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

  • Contacts third-party web service commonly abused for C2 1 TTPs 2 IoCs

    Legitimate web (hosting) services can be abused by malware authors to host malware or C2s.

  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

  • Checks processor information in registry 2 TTPs 4 IoCs

    Processor information is often read in order to detect sandboxing environments.

  • Modifies registry class 63 IoCs
  • Suspicious use of SetWindowsHookEx 6 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Revo.Uninstaller.Pro.v5.4.5\Revo.Uninstaller.Pro.v5.4.5.exe
    "C:\Users\Admin\AppData\Local\Temp\Revo.Uninstaller.Pro.v5.4.5\Revo.Uninstaller.Pro.v5.4.5.exe"
    1⤵
    • Loads dropped DLL
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:4812
    • C:\Windows\SYSTEM32\RUNDLL32.EXE
      RUNDLL32.EXE SETUPAPI.DLL,InstallHinfSection DefaultInstall 132 C:\Program Files\VS Revo Group\Revo Uninstaller Pro\revoflt.inf
      2⤵
      • Drops file in Drivers directory
      • Adds Run key to start application
      • Suspicious use of WriteProcessMemory
      PID:4608
      • C:\Windows\system32\runonce.exe
        "C:\Windows\system32\runonce.exe" -r
        3⤵
        • Checks processor information in registry
        • Suspicious use of WriteProcessMemory
        PID:2260
        • C:\Windows\System32\grpconv.exe
          "C:\Windows\System32\grpconv.exe" -o
          4⤵
            PID:2068
      • C:\Windows\SYSTEM32\regsvr32.exe
        regsvr32.exe /s "C:\Program Files\VS Revo Group\Revo Uninstaller Pro\RUExt.dll"
        2⤵
        • Loads dropped DLL
        • Modifies system executable filetype association
        • Modifies registry class
        PID:4496
      • C:\Program Files\VS Revo Group\Revo Uninstaller Pro\RevoUninPro.exe
        "C:\Program Files\VS Revo Group\Revo Uninstaller Pro\RevoUninPro.exe" /bc
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:548
      • C:\Program Files\VS Revo Group\Revo Uninstaller Pro\ruplp.exe
        "C:\Program Files\VS Revo Group\Revo Uninstaller Pro\ruplp.exe" /regserver /NOREDIRECT
        2⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Modifies registry class
        PID:1912
      • C:\Program Files\VS Revo Group\Revo Uninstaller Pro\RevoUninPro.exe
        "C:\Program Files\VS Revo Group\Revo Uninstaller Pro\RevoUninPro.exe"
        2⤵
        • Executes dropped EXE
        • Suspicious use of SetWindowsHookEx
        PID:5072
      • C:\Windows\SysWOW64\regsvr32.exe
        regsvr32.exe /s /u "C:\Program Files\VS Revo Group\Revo Uninstaller Pro\RUExt.dll"
        2⤵
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:2104
        • C:\Windows\system32\regsvr32.exe
          /s /u "C:\Program Files\VS Revo Group\Revo Uninstaller Pro\RUExt.dll"
          3⤵
          • Loads dropped DLL
          • Modifies system executable filetype association
          • Modifies registry class
          PID:1892
      • C:\Windows\SYSTEM32\RUNDLL32.EXE
        RUNDLL32.EXE SETUPAPI.DLL,InstallHinfSection DefaultUninstall 132 C:\Program Files\VS Revo Group\Revo Uninstaller Pro\revoflt.inf
        2⤵
        • Drops file in Drivers directory
        • Adds Run key to start application
        • Drops file in Windows directory
        • Suspicious use of WriteProcessMemory
        PID:1332
        • C:\Windows\system32\runonce.exe
          "C:\Windows\system32\runonce.exe" -r
          3⤵
          • Checks processor information in registry
          • Suspicious use of WriteProcessMemory
          PID:1672
          • C:\Windows\System32\grpconv.exe
            "C:\Windows\System32\grpconv.exe" -o
            4⤵
              PID:2780
      • C:\Windows\system32\grpconv.exe
        grpconv -o
        1⤵
          PID:1968
        • C:\PROGRA~1\VSREVO~1\REVOUN~1\ruplp.exe
          C:\PROGRA~1\VSREVO~1\REVOUN~1\ruplp.exe -Embedding
          1⤵
          • Checks computer location settings
          • Executes dropped EXE
          • System Location Discovery: System Language Discovery
          PID:1380

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              Downloads

              RUExt.dll

              • Path C:\Program Files\VS Revo Group\Revo Uninstaller Pro\RUExt.dll
              • Size 187KB
              • SHA256 bda04b693bfdea86a7a3b47f2e4ceae9cd9475c4e81b0aa73b70fd244a65f70f
              • MD5 SHA1 SHA512 SSDEEP TLSH

              RevoUninPro.exe

              • Path C:\Program Files\VS Revo Group\Revo Uninstaller Pro\RevoUninPro.exe
              • Size 24.4MB
              • SHA256 401161d26f0cc80e677d9371983df1de283170fc2b9d639b5b023a3b72552a7e
              • MD5 SHA1 SHA512 SSDEEP TLSH

              revoflt.inf

              • Path C:\Program Files\VS Revo Group\Revo Uninstaller Pro\Win10\revoflt.inf
              • Size 2KB
              • SHA256 084309301ca31fc8384e97b30f0867559fbd20c38772e1ff7573d24bbc1a0833
              • MD5 SHA1 SHA512 TLSH

              english.ini

              • Path C:\Program Files\VS Revo Group\Revo Uninstaller Pro\lang\english.ini
              • Size 123KB
              • SHA256 e1b61b5502bec66a0bd2a7ec9380bc5ced015537a82ce71c8f791057dac0b0fa
              • MD5 SHA1 SHA512 SSDEEP TLSH

              revoflt.sys

              • Path C:\Program Files\VS Revo Group\Revo Uninstaller Pro\revoflt.sys
              • Size 37KB
              • SHA256 25667717bf4691957f07a6363585e2c7eaf22e5fd7229bf32c91ea59ef4a2edd
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ruplp.exe

              • Path C:\Program Files\VS Revo Group\Revo Uninstaller Pro\ruplp.exe
              • Size 9.6MB
              • SHA256 c6d97857b3b9f26c8e93d7b6e6481f93a16db75cbf9d1756cb29fba0fd9e240e
              • MD5 SHA1 SHA512 SSDEEP TLSH

              revouninstallerpro5.lic

              • Path C:\ProgramData\VS Revo Group\Revo Uninstaller Pro\revouninstallerpro5.lic
              • Size 64KB
              • SHA256 fe4bcb4251f77375119a936c80fb36221af0c5105e840e2e115d47f96cb437c8
              • MD5 SHA1 SHA512 SSDEEP TLSH

              ExplorerStartupLog_RunOnce.etl

              • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\Explorer\ExplorerStartupLog_RunOnce.etl
              • Size 8KB
              • SHA256 426a34d8ba9f9e679291623c5fffdc9aae8730855f6384ec8cb56c738978c560
              • MD5 SHA1 SHA512 SSDEEP TLSH

              INetC.dll

              • Path C:\Users\Admin\AppData\Local\Temp\nse5B0E.tmp\INetC.dll
              • Size 238KB
              • SHA256 83005624a3c515e8e4454a416693ba0fbf384ff5ea0e1471f520dfae790d4ab7
              • MD5 SHA1 SHA512 SSDEEP TLSH

              LangDLL.dll

              • Path C:\Users\Admin\AppData\Local\Temp\nse5B0E.tmp\LangDLL.dll
              • Size 5KB
              • SHA256 4cf25411f28f639f72156c24b0f66ea42f5aee5973f6c137d901da6ae42d5b7e
              • MD5 SHA1 SHA512 SSDEEP TLSH

              System.dll

              • Path C:\Users\Admin\AppData\Local\Temp\nse5B0E.tmp\System.dll
              • Size 12KB
              • SHA256 8b4c47c4cf5e76ec57dd5a050d5acd832a0d532ee875d7b44f6cdaf68f90d37c
              • MD5 SHA1 SHA512 SSDEEP TLSH

              nsDialogs.dll

              • Path C:\Users\Admin\AppData\Local\Temp\nse5B0E.tmp\nsDialogs.dll
              • Size 9KB
              • SHA256 b1350f487692057c8ffde75dcc55287a52a3272240d4d4912f24464b27551fc0
              • MD5 SHA1 SHA512 SSDEEP TLSH

              nsExec.dll

              • Path C:\Users\Admin\AppData\Local\Temp\nse5B0E.tmp\nsExec.dll
              • Size 7KB
              • SHA256 b121689861b506dbc9c3797b49bc8a90d555cb7db58cb959165cc758391c00bb
              • MD5 SHA1 SHA512 SSDEEP TLSH

              logFile.vslog

              • Path C:\Users\Admin\AppData\Local\VS Revo Group\Revo Uninstaller Pro\logFile.vslog
              • Size 322B
              • SHA256 f1369a0032a1c259f5f011e7cc6195b5f46abefe265ea9dbaa573b22b656d33e
              • MD5 SHA1 SHA512 TLSH

              memory/548-207-0x0000000000850000-0x00000000008FD000-memory.dmp

              memory/1332-255-0x000001F58E490000-0x000001F58E4FB000-memory.dmp

              memory/1380-253-0x00000000011F0000-0x00000000012CC000-memory.dmp

              memory/1380-252-0x0000000000400000-0x0000000000E32000-memory.dmp

              memory/1672-254-0x000001B678970000-0x000001B678A1D000-memory.dmp

              memory/1912-215-0x0000000001490000-0x000000000156C000-memory.dmp

              memory/1912-214-0x0000000000400000-0x0000000000E32000-memory.dmp

              memory/2104-241-0x0000000000840000-0x000000000091C000-memory.dmp

              memory/2260-191-0x0000029B86DB0000-0x0000029B86E5D000-memory.dmp

              memory/4608-192-0x0000026272890000-0x00000262728FB000-memory.dmp

              memory/4812-23-0x00000000009F0000-0x0000000000ACC000-memory.dmp

              memory/4812-18-0x00000000009F0000-0x0000000000ACC000-memory.dmp

              memory/4812-190-0x00000000009F0000-0x0000000000ACC000-memory.dmp

              memory/4812-221-0x00000000009F0000-0x0000000000ACC000-memory.dmp

              memory/4812-270-0x00000000009F0000-0x0000000000ACC000-memory.dmp

              memory/5072-271-0x00000000004D0000-0x000000000057D000-memory.dmp