Analysis

  • user interaction
    yes
  • max time kernel
    166s
  • max time network
    171s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260513-en
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260513-enlocale:en-usos:windows10-ltsc_2021-x64systemwindows
  • submitted
    10/08/2026, 16:59

General

  • Target
    fishstrapsetup.exe
  • Size 16.2MB
  • Sample260810-vhdb5ayvbw
  • SHA256 e476a1b068f473c5a2b41d19f7a397b007e20ffd8d5625bff2c4001fcbe8d140
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Family
  • ratonrat

Version
  • Professional

C2
  • rawq-30615.portmap.host:30615

Mutex
  • QGWRoEFROty9C6Wp9H5bRKU

Attributes
  • assist

    true

  • box

    false

  • box_icon

    Error

  • box_msg

    I'm the message box description

  • box_title

    Hello World

  • defender

    true

  • delay

    0

  • hide_file

    true

  • open_website

    false

  • password

    t.me/junk_code

  • process_critical

    true

  • raw

    silly21

  • reconnect

    3

  • startup

    true

  • tag

    Infected

  • uac

    true

  • vm

    true

  • website

    https://t.me/example

Signatures

  • Family: RatonRAT

    RatonRAT is an information stealer written in C#.

  • Detects RatonRAT payload 3 IoCs
  • Looks for VirtualBox Guest Additions in registry 2 TTPs 2 IoCs
  • Command and Scripting Interpreter: PowerShell 1 TTPs 4 IoCs

    Run Powershell and hide display window.

  • Looks for VMWare Tools registry key 2 TTPs 2 IoCs
  • Checks BIOS information in registry 2 TTPs 2 IoCs

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

  • Checks computer location settings 2 TTPs 1 IoCs

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

  • Executes dropped EXE 5 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.

  • Maps connected drives based on registry 3 TTPs 4 IoCs

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

  • Suspicious use of NtSetInformationThreadHideFromDebugger 3 IoCs
  • Executes a command shell one-liner 1 TTPs 1 IoCs

    Execution of a cmd.exe one-liner (/c "close" or /k "keep") is a common script/loader stage.

  • Delays execution with timeout.exe 2 IoCs
  • Modifies registry class 18 IoCs
  • Scheduled Task/Job: Scheduled Task 1 TTPs 2 IoCs

    Schtasks is often used by malware for persistence or to perform post-infection execution.

  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 49 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

Processes

  • C:\Users\Admin\AppData\Local\Temp\fishstrapsetup.exe
    "C:\Users\Admin\AppData\Local\Temp\fishstrapsetup.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:3916
    • C:\Users\Admin\AppData\Roaming\RuntimeCache\eb6568f9\Fishstrap.exe
      "C:\Users\Admin\AppData\Roaming\RuntimeCache\eb6568f9\Fishstrap.exe"
      2⤵
      • Executes dropped EXE
      • Suspicious use of WriteProcessMemory
      PID:4100
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Roaming\Temp\cleanup_npC1tPaUOVyz6lVHbhTXX0szgmzGMz.bat""
        3⤵
        • Executes a command shell one-liner
        • Suspicious use of WriteProcessMemory
        PID:4736
        • C:\Windows\system32\chcp.com
          chcp 65001
          4⤵
            PID:2324
          • C:\Windows\system32\timeout.exe
            timeout /t 2 /nobreak
            4⤵
            • Delays execution with timeout.exe
            PID:1112
          • C:\Users\Admin\AppData\Roaming\PlatformRuntime\Fishstrap.exe
            "C:\Users\Admin\AppData\Roaming\PlatformRuntime\Fishstrap.exe"
            4⤵
            • Looks for VirtualBox Guest Additions in registry
            • Looks for VMWare Tools registry key
            • Checks BIOS information in registry
            • Executes dropped EXE
            • Maps connected drives based on registry
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of WriteProcessMemory
            PID:3212
            • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
              "powershell.exe" -NonInteractive -WindowStyle Hidden -ExecutionPolicy Bypass "Add-MpPreference -ExclusionProcess 'C:\Users\Admin\AppData\Roaming\PlatformRuntime\Fishstrap.exe'"
              5⤵
              • Command and Scripting Interpreter: PowerShell
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:472
            • C:\Windows\SYSTEM32\schtasks.exe
              "schtasks" /create /tn "Fishstrap" /sc ONLOGON /tr "\"C:\Users\Admin\AppData\Roaming\PlatformRuntime\Fishstrap.exe\"" /rl HIGHEST /f
              5⤵
              • Scheduled Task/Job: Scheduled Task
              PID:4756
          • C:\Windows\system32\timeout.exe
            timeout /t 1 /nobreak
            4⤵
            • Delays execution with timeout.exe
            PID:1064
      • C:\Users\Admin\AppData\Roaming\RuntimeCache\eb6568f9\Fishstrap (2).exe
        "C:\Users\Admin\AppData\Roaming\RuntimeCache\eb6568f9\Fishstrap (2).exe"
        2⤵
        • Checks computer location settings
        • Executes dropped EXE
        • Modifies registry class
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of FindShellTrayWindow
        • Suspicious use of WriteProcessMemory
        PID:2796
        • C:\Users\Admin\AppData\Local\Fishstrap\Versions\version-d584fb6c717a43d9\RobloxPlayerBeta.exe
          "C:\Users\Admin\AppData\Local\Fishstrap\Versions\version-d584fb6c717a43d9\RobloxPlayerBeta.exe"
          3⤵
          • Executes dropped EXE
          • Loads dropped DLL
          • Suspicious use of NtSetInformationThreadHideFromDebugger
          • Suspicious behavior: EnumeratesProcesses
          PID:5884
    • C:\Users\Admin\AppData\Roaming\PlatformRuntime\Fishstrap.exe
      "C:\Users\Admin\AppData\Roaming\PlatformRuntime\Fishstrap.exe"
      1⤵
      • Looks for VirtualBox Guest Additions in registry
      • Looks for VMWare Tools registry key
      • Checks BIOS information in registry
      • Executes dropped EXE
      • Maps connected drives based on registry
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:3468
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        "powershell.exe" -NonInteractive -WindowStyle Hidden -ExecutionPolicy Bypass "Add-MpPreference -ExclusionProcess 'C:\Users\Admin\AppData\Roaming\PlatformRuntime\Fishstrap.exe'"
        2⤵
        • Command and Scripting Interpreter: PowerShell
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3204
      • C:\Windows\system32\schtasks.exe
        "schtasks" /create /tn "Fishstrap" /sc ONLOGON /tr "\"C:\Users\Admin\AppData\Roaming\PlatformRuntime\Fishstrap.exe\"" /rl HIGHEST /f
        2⤵
        • Scheduled Task/Job: Scheduled Task
        PID:1724

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

          Loading Replay Monitor...

          Downloads

          RobloxPlayerBeta.dll

          • Path C:\Users\Admin\AppData\Local\Fishstrap\Versions\version-d584fb6c717a43d9\RobloxPlayerBeta.dll
          • Size 22.1MB
          • SHA256 6ee5053665a3d722337d0e14becbb614b603b19d952538e3eb9ba6b76cef2ee8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Fishstrap.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\Fishstrap.exe.log
          • Size 859B
          • SHA256 978228083a455adcd3407c110bf18d613f544ad37c47bc2d92a7be87f6c3168d
          • MD5 SHA1 SHA512 TLSH

          powershell.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0\UsageLogs\powershell.exe.log
          • Size 3KB
          • SHA256 351ce09ad334ef178982db64a4ce60b4a1efabafe960253dc25ad0987d0701bd
          • MD5 SHA1 SHA512 TLSH

          StartupProfileData-NonInteractive

          • Path C:\Users\Admin\AppData\Local\Microsoft\Windows\PowerShell\StartupProfileData-NonInteractive
          • Size 1KB
          • SHA256 198714446a18fde2692a4b75308a202219169068457d45fb2b86f6351ca53683
          • MD5 SHA1 SHA512 TLSH

          aforge.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\aforge.dll
          • Size 17KB
          • SHA256 966a474060a8aca70c73ba09d0b6fe2353035961c7107b9003ef879c010ff8da
          • MD5 SHA1 SHA512 SSDEEP TLSH

          aforge.video.directshow.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\aforge.video.directshow.dll
          • Size 60KB
          • SHA256 666d44798d94eafa1ed21af79e9bc0293ffd96f863ab5d87f78bcee9ef9ffd6b
          • MD5 SHA1 SHA512 SSDEEP TLSH

          aforge.video.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\aforge.video.dll
          • Size 20KB
          • SHA256 bafa6ed04ca2782270074127a0498dde022c2a9f4096c6bb2b8e3c08bb3d404d
          • MD5 SHA1 SHA512 SSDEEP TLSH

          costura.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\costura.dll
          • Size 5KB
          • SHA256 7a9e767ad824afa2c1b0aed513fe1cf2b8dac6d40f24e7c4075af32b1cf23a20
          • MD5 SHA1 SHA512 SSDEEP TLSH

          microsoft.win32.registry.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\microsoft.win32.registry.dll
          • Size 22KB
          • SHA256 619737e2af8fb713085726631dd2e522fe130cac1d388a59c38907a47d7aadea
          • MD5 SHA1 SHA512 SSDEEP TLSH

          naudio.asio.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\naudio.asio.dll
          • Size 33KB
          • SHA256 504dd507c34817a8a8be1965e82dd091ff0f5a85ba444ea784783f196677bfd1
          • MD5 SHA1 SHA512 SSDEEP TLSH

          naudio.core.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\naudio.core.dll
          • Size 183KB
          • SHA256 4f8d8c4140146674b103c8a3c46fbc4c768a86c0012a167168e3f7da2b3e5c09
          • MD5 SHA1 SHA512 SSDEEP TLSH

          naudio.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\naudio.dll
          • Size 7KB
          • SHA256 5dca4b3b7f1f2abdd2f94d3a056e4c414605da248612f02a0d2ab38083aa8ef8
          • MD5 SHA1 SHA512 SSDEEP TLSH

          naudio.midi.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\naudio.midi.dll
          • Size 45KB
          • SHA256 7796a9ec97a1ff29e682855839845da9fe26b6ddcc34addbb514cd73e7a9f02a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          naudio.wasapi.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\naudio.wasapi.dll
          • Size 176KB
          • SHA256 a05e371abf96195770ac4f84653d987d63731fed528e98c7fe0d10ce66e37d7e
          • MD5 SHA1 SHA512 SSDEEP TLSH

          naudio.winforms.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\naudio.winforms.dll
          • Size 33KB
          • SHA256 82a92cb6b9001e013c653c65e4ae460346770ec7512856879e63018d9cafc41a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          naudio.winmm.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\naudio.winmm.dll
          • Size 56KB
          • SHA256 3c8359bb74c6dabd2ec8ba561ffa163f24859ff5aef724fb5794073e2e883a02
          • MD5 SHA1 SHA512 SSDEEP TLSH

          newtonsoft.json.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\newtonsoft.json.dll
          • Size 704KB
          • SHA256 f0c07af0e84d4dd4da4bd7823ba4535bc0481b3bf623ed40b659b68147a6bb75
          • MD5 SHA1 SHA512 SSDEEP TLSH

          stuff.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\stuff.dll
          • Size 11KB
          • SHA256 db4f07306bbddcc664051ee53db6f37f343f01bab6da7276cf1b600adcdfdf72
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.buffers.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\system.buffers.dll
          • Size 20KB
          • SHA256 accccfbe45d9f08ffeed9916e37b33e98c65be012cfff6e7fa7b67210ce1fefb
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.memory.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\system.memory.dll
          • Size 138KB
          • SHA256 bf3fb84664f4097f1a8a9bc71a51dcf8cf1a905d4080a4d290da1730866e856f
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.numerics.vectors.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\system.numerics.vectors.dll
          • Size 113KB
          • SHA256 1d3ef8698281e7cf7371d1554afef5872b39f96c26da772210a33da041ba1183
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.resources.extensions.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\system.resources.extensions.dll
          • Size 78KB
          • SHA256 b69c9547c7bf0d6e357993d41228b6cef033f4f2e0ecba9f07325c7e980139ae
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.runtime.compilerservices.unsafe.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\system.runtime.compilerservices.unsafe.dll
          • Size 16KB
          • SHA256 70868cd40021b6df1195ba764a6672d8e19ab58b86a263992986361f316a51ce
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.security.accesscontrol.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\system.security.accesscontrol.dll
          • Size 30KB
          • SHA256 aced52254a8c3cb6ad30f99f8b745296926c49373cab00824c2c4c10ad325b10
          • MD5 SHA1 SHA512 SSDEEP TLSH

          system.security.principal.windows.dll

          • Path C:\Users\Admin\AppData\Local\Temp\Costura\950BDAD80D65EA7FC5FD07F1244F1737\system.security.principal.windows.dll
          • Size 14KB
          • SHA256 c3ae599b5218516915f6542779ef577d5ad5de3d84a116e671c09e15e4591285
          • MD5 SHA1 SHA512 SSDEEP TLSH

          __PSScriptPolicyTest_5qiq0sqf.gpo.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_5qiq0sqf.gpo.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512 TLSH

          Fishstrap (2).exe

          • Path C:\Users\Admin\AppData\Roaming\RuntimeCache\eb6568f9\Fishstrap (2).exe
          • Size 14.9MB
          • SHA256 d3a66023c4a04b13b7df0159930f748f309c1307b1bccbd022bacdd68d878f35
          • MD5 SHA1 SHA512 SSDEEP TLSH

          Fishstrap.exe

          • Path C:\Users\Admin\AppData\Roaming\RuntimeCache\eb6568f9\Fishstrap.exe
          • Size 1.3MB
          • SHA256 32403363301f78048effcbe7e3193b62935a1462670fb73834db066d7175268a
          • MD5 SHA1 SHA512 SSDEEP TLSH

          cleanup_npC1tPaUOVyz6lVHbhTXX0szgmzGMz.bat

          • Path C:\Users\Admin\AppData\Roaming\Temp\cleanup_npC1tPaUOVyz6lVHbhTXX0szgmzGMz.bat
          • Size 595B
          • SHA256 7842ae01ba4cef37d7fd382e25d91915a4d38449f65f08bce17418d87e56e637
          • MD5 SHA1 SHA512 TLSH

          memory/472-101-0x00000177870D0000-0x00000177870F2000-memory.dmp

          memory/3212-117-0x000001DB2BBB0000-0x000001DB2BC64000-memory.dmp

          memory/3212-116-0x000001DB2BAE0000-0x000001DB2BAEA000-memory.dmp

          memory/3212-119-0x000001DB2BEA0000-0x000001DB2BED2000-memory.dmp

          memory/3212-120-0x000001DB2BE80000-0x000001DB2BE9A000-memory.dmp

          memory/3916-0-0x0000000000520000-0x000000000155C000-memory.dmp

          memory/4100-10-0x00000264E6CD0000-0x00000264E6E20000-memory.dmp

          memory/4100-11-0x00000264E9420000-0x00000264E9430000-memory.dmp

          memory/4100-55-0x00000264E94E0000-0x00000264E94EA000-memory.dmp