Analysis

  • user interaction
    yes
  • max time kernel
    54s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260513-en
  • resource tags

    arch:x64arch:x86image:win11-20260513-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    28/05/2026, 15:12

General

  • Target
    Demo_RustTweaker_v1.3.2.exe
  • Size 194.3MB
  • Sample260528-slbllady31
  • SHA256 927ef2b5f462aacb7db85e95ae1fb30ead07cb9925ed9dfd63a98f419905d9a8
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 4 IoCs
  • Loads dropped DLL 1 IoCs
  • Checks installed software on the system 1 TTPs

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

  • Checks whether UAC is enabled 1 TTPs 1 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 7 IoCs

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

  • Inno Setup is an open-source installation builder for Windows applications. 3 IoCs

    Inno Setup installer

  • Checks processor information in registry 2 TTPs 7 IoCs

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

  • Enumerates system info in registry 2 TTPs 2 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 5 IoCs
  • Views/modifies file attributes 1 TTPs 1 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\Demo_RustTweaker_v1.3.2.exe
    "C:\Users\Admin\AppData\Local\Temp\Demo_RustTweaker_v1.3.2.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of WriteProcessMemory
    PID:3432
    • C:\Users\Admin\AppData\Local\Temp\is-GZXEO4YXLZ.tmp\Demo_RustTweaker_v1.3.2.tmp
      "C:\Users\Admin\AppData\Local\Temp\is-GZXEO4YXLZ.tmp\Demo_RustTweaker_v1.3.2.tmp" /SL5="$90054,202648027,928768,C:\Users\Admin\AppData\Local\Temp\Demo_RustTweaker_v1.3.2.exe"
      2⤵
      • Executes dropped EXE
      • Drops file in Program Files directory
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:3144
      • C:\Users\Admin\AppData\Local\Temp\is-SVYWIFINR0.tmp\MicrosoftEdgeWebview2Setup.exe
        "C:\Users\Admin\AppData\Local\Temp\is-SVYWIFINR0.tmp\MicrosoftEdgeWebview2Setup.exe" /install /quiet /norestart
        3⤵
        • Executes dropped EXE
        • Drops file in Program Files directory
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:1616
        • C:\Program Files (x86)\Microsoft\Temp\EUD879.tmp\MicrosoftEdgeUpdate.exe
          "C:\Program Files (x86)\Microsoft\Temp\EUD879.tmp\MicrosoftEdgeUpdate.exe" /install /quiet /norestart "appguid={F3017226-FE2A-4295-8BDF-00C3A9A7E4C5}&appname=Microsoft%20Edge%20Webview2%20Runtime&needsadmin=prefers"
          4⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Checks whether UAC is enabled
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:1716
          • C:\Windows\SysWOW64\wermgr.exe
            "C:\Windows\system32\wermgr.exe" "-outproc" "0" "1716" "904" "804" "900" "0" "0" "0" "0" "0" "0" "0" "0"
            5⤵
            • System Location Discovery: System Language Discovery
            • Checks processor information in registry
            • Enumerates system info in registry
            PID:2996
      • C:\Windows\SysWOW64\attrib.exe
        "attrib" -R "C:\Program Files (x86)\RustTweaker" /S /D
        3⤵
        • System Location Discovery: System Language Discovery
        • Views/modifies file attributes
        PID:2508
  • C:\Program Files (x86)\RustTweaker\RustTweaker.exe
    "C:\Program Files (x86)\RustTweaker\RustTweaker.exe"
    1⤵
    • Executes dropped EXE
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • System Location Discovery: System Language Discovery
    PID:2112

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        MicrosoftEdgeUpdate.exe

        • Path C:\Program Files (x86)\Microsoft\Temp\EUD879.tmp\MicrosoftEdgeUpdate.exe
        • Size 201KB
        • SHA256 955b5950fd92e5c5eec395b022566c9a2594ca3126d894408e2e29ba25d8b0dd
        • MD5 SHA1 SHA512 SSDEEP TLSH

        msedgeupdate.dll

        • Path C:\Program Files (x86)\Microsoft\Temp\EUD879.tmp\msedgeupdate.dll
        • Size 2.2MB
        • SHA256 f3b294746b21ae8f8e114dce1a8709f6f43290663a397f9b045a2cb22703a9e0
        • MD5 SHA1 SHA512 SSDEEP TLSH

        msedgeupdateres_en.dll

        • Path C:\Program Files (x86)\Microsoft\Temp\EUD879.tmp\msedgeupdateres_en.dll
        • Size 27KB
        • SHA256 434273ca930bef6293c477c7fd81e6341bc3be00444bf157fd649b7b66a79664
        • MD5 SHA1 SHA512 SSDEEP TLSH

        RustTweaker.exe

        • Path C:\Program Files (x86)\RustTweaker\RustTweaker.exe
        • Size 5.6MB
        • SHA256 eb0b76b0f56e47d8e19e2b1a1595851e3099dd0839f16a0a300d91ead5916187
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Demo_RustTweaker_v1.3.2.tmp

        • Path C:\Users\Admin\AppData\Local\Temp\is-GZXEO4YXLZ.tmp\Demo_RustTweaker_v1.3.2.tmp
        • Size 3.6MB
        • SHA256 ec8dbf2cbbf95bd377fc75116ca55b37ab0c4036d0adcffbb99ad4a5919ca0e4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        MicrosoftEdgeWebview2Setup.exe

        • Path C:\Users\Admin\AppData\Local\Temp\is-SVYWIFINR0.tmp\MicrosoftEdgeWebview2Setup.exe
        • Size 1.6MB
        • SHA256 6a2f2492ea642e3965ce2421e257da53ff18c5dee08df33c84c061ae47a8a302
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/2112-559-0x0000000005270000-0x0000000005271000-memory.dmp

        memory/2112-558-0x0000000000630000-0x0000000000D4C000-memory.dmp

        memory/3144-13-0x0000000000230000-0x00000000005DD000-memory.dmp

        memory/3144-478-0x0000000000230000-0x00000000005DD000-memory.dmp

        memory/3144-5-0x0000000003250000-0x0000000003251000-memory.dmp

        memory/3144-9-0x0000000003250000-0x0000000003251000-memory.dmp

        memory/3144-11-0x0000000000230000-0x00000000005DD000-memory.dmp

        memory/3144-8-0x0000000000230000-0x00000000005DD000-memory.dmp

        memory/3144-562-0x0000000000230000-0x00000000005DD000-memory.dmp

        memory/3144-563-0x0000000000230000-0x00000000005DD000-memory.dmp

        memory/3432-0-0x0000000000280000-0x0000000000372000-memory.dmp

        memory/3432-7-0x0000000000280000-0x0000000000372000-memory.dmp

        memory/3432-564-0x0000000000280000-0x0000000000372000-memory.dmp