Analysis

  • user interaction
    yes
  • max time kernel
    299s
  • max time network
    293s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260911-en
  • resource tags

    arch:x64arch:x86image:win11-20260911-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    01/10/2026, 16:27

General

  • Target
    rustdesk-1.4.9-x86_64.zip
  • Size 33.7MB
  • Sample261001-tyjcmsybrf
  • SHA256 3d867f6ae1f5dd908da93569d939e3f6ff6b8ca2b73d8f9e1ed7bc1514d79ba8
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Executes dropped EXE 5 IoCs
  • Loads dropped DLL 60 IoCs
  • RustDesk remote access tool

    RustDesk is an open-source remote admin tool.

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

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

  • 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.

  • Reads the TCP/IP host and domain name from the registry 1 TTPs 2 IoCs

    The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

  • Kills process with taskkill 2 IoCs
  • Modifies system certificate store 2 TTPs 10 IoCs
  • Suspicious behavior: AddClipboardFormatListener 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 6 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of FindShellTrayWindow 1 IoCs
  • Suspicious use of SetWindowsHookEx 2 IoCs
  • Suspicious use of WriteProcessMemory 7 IoCs

Processes

  • C:\Windows\Explorer.exe
    C:\Windows\Explorer.exe /idlist,,C:\Users\Admin\AppData\Local\Temp\rustdesk-1.4.9-x86_64.zip
    1⤵
      PID:3908
    • C:\Windows\System32\rundll32.exe
      C:\Windows\System32\rundll32.exe C:\Windows\System32\shell32.dll,SHCreateLocalServerRunDll {9aa46009-3ce0-458a-a354-715610a075e6} -Embedding
      1⤵
        PID:3424
      • C:\Users\Admin\Documents\rustdesk-1.4.9-x86_64\setup.exe
        "C:\Users\Admin\Documents\rustdesk-1.4.9-x86_64\setup.exe"
        1⤵
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of WriteProcessMemory
        PID:3932
        • C:\Users\Admin\AppData\Local\Temp\rustdesk-1.4.9-x86_64.exe
          C:\Users\Admin\AppData\Local\Temp\rustdesk-1.4.9-x86_64.exe
          2⤵
          • Executes dropped EXE
          • Suspicious use of WriteProcessMemory
          PID:5060
          • C:\Windows\system32\taskkill.exe
            "taskkill" /F /IM RuntimeBroker_rustdesk.exe
            3⤵
            • Kills process with taskkill
            • Suspicious use of AdjustPrivilegeToken
            PID:220
          • C:\Users\Admin\AppData\Local\rustdesk\rustdesk.exe
            "C:\Users\Admin\AppData\Local\rustdesk\.\rustdesk.exe"
            3⤵
            • Executes dropped EXE
            • Loads dropped DLL
            • Reads the TCP/IP host and domain name from the registry
            • Modifies system certificate store
            • Suspicious behavior: AddClipboardFormatListener
            • Suspicious behavior: EnumeratesProcesses
            • Suspicious use of FindShellTrayWindow
            • Suspicious use of SetWindowsHookEx
            • Suspicious use of WriteProcessMemory
            PID:2944
            • C:\Users\Admin\AppData\Local\rustdesk\rustdesk.exe
              "C:\Users\Admin\AppData\Local\rustdesk\rustdesk.exe" --portable-service --portable-service-shmem-name=_portable_service_2944_c62f5f12
              4⤵
              • Executes dropped EXE
              • Loads dropped DLL
              • Suspicious behavior: EnumeratesProcesses
              • Suspicious use of AdjustPrivilegeToken
              PID:1992
              • C:\Users\Admin\AppData\Local\rustdesk\rustdesk.exe
                "C:\Users\Admin\AppData\Local\rustdesk\rustdesk.exe" --run-as-system --portable-service-shmem-name=_portable_service_2944_c62f5f12
                5⤵
                • Executes dropped EXE
                • Loads dropped DLL
                • Drops file in Windows directory
                PID:4768
            • C:\Windows\system32\cmd.exe
              "cmd" /c "taskkill /F /IM RuntimeBroker_rustdesk.exe"
              4⤵
              • Executes a command shell one-liner
              • Suspicious use of WriteProcessMemory
              PID:4800
              • C:\Windows\system32\taskkill.exe
                taskkill /F /IM RuntimeBroker_rustdesk.exe
                5⤵
                • Kills process with taskkill
                • Suspicious use of AdjustPrivilegeToken
                PID:2120
            • C:\Users\Admin\AppData\Local\rustdesk\rustdesk.exe
              "C:\Users\Admin\AppData\Local\rustdesk\.\rustdesk.exe" --check-hwcodec-config
              4⤵
              • Executes dropped EXE
              • Loads dropped DLL
              PID:1880

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            rustdesk-1.4.9-x86_64.exe

            • Path C:\Users\Admin\AppData\Local\Temp\rustdesk-1.4.9-x86_64.exe
            • Size 23.3MB
            • SHA256 eaedeb0088e687bf46f7c46a9c6ea5493ce51f3134dfd6acbedb47b5b9136274
            • MD5 SHA1 SHA512 SSDEEP TLSH

            app.so

            • Path C:\Users\Admin\AppData\Local\rustdesk\data\app.so
            • Size 12.7MB
            • SHA256 a84705c3be6be7a580319a59cd7c57c9a96b0750884f6464200bfcc71ac11fda
            • MD5 SHA1 SHA512 SSDEEP TLSH

            FontManifest.json

            • Path C:\Users\Admin\AppData\Local\rustdesk\data\flutter_assets\FontManifest.json
            • Size 483B
            • SHA256 068f1cc96816fab157a6813ce233731e46bf661ad84d0018381fb58b19396886
            • MD5 SHA1 SHA512 TLSH

            icudtl.dat

            • Path C:\Users\Admin\AppData\Local\rustdesk\data\icudtl.dat
            • Size 760KB
            • SHA256 c12537022ef818991a7bfed41a76d8d6ae962ffbc0e6511ac762a5d0845e7f7c
            • MD5 SHA1 SHA512 SSDEEP TLSH

            desktop_drop_plugin.dll

            • Path C:\Users\Admin\AppData\Local\rustdesk\desktop_drop_plugin.dll
            • Size 330KB
            • SHA256 8390d51178a8a8b9b2ec978579f9196b6d5608a875a1ab95f215330381e88620
            • MD5 SHA1 SHA512 SSDEEP TLSH

            desktop_multi_window_plugin.dll

            • Path C:\Users\Admin\AppData\Local\rustdesk\desktop_multi_window_plugin.dll
            • Size 394KB
            • SHA256 03335bb8c4c341fdaf4824a24ca8a7af3054c3afe159fadf7400cb72520fa6c0
            • MD5 SHA1 SHA512 SSDEEP TLSH

            file_selector_windows_plugin.dll

            • Path C:\Users\Admin\AppData\Local\rustdesk\file_selector_windows_plugin.dll
            • Size 357KB
            • SHA256 585e7452e5ceedd5865215166ccad52df440f6561e8c6b961b1e32acb345462d
            • MD5 SHA1 SHA512 SSDEEP TLSH

            flutter_custom_cursor_plugin.dll

            • Path C:\Users\Admin\AppData\Local\rustdesk\flutter_custom_cursor_plugin.dll
            • Size 320KB
            • SHA256 fff1deb1700232f53dc8e035df565a5bfb3b8f77d055303499fa120d387effd5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            flutter_gpu_texture_renderer_plugin.dll

            • Path C:\Users\Admin\AppData\Local\rustdesk\flutter_gpu_texture_renderer_plugin.dll
            • Size 352KB
            • SHA256 bc6b81e8dd2c26c55f354b8c194729314a5a3c5e89b00657d0f173fc40282641
            • MD5 SHA1 SHA512 SSDEEP TLSH

            flutter_windows.dll

            • Path C:\Users\Admin\AppData\Local\rustdesk\flutter_windows.dll
            • Size 17.2MB
            • SHA256 a5f97552c3b65ea2f3b661730cd1028518dac8f3c876e523bde6388460e004d0
            • MD5 SHA1 SHA512 SSDEEP TLSH

            librustdesk.dll

            • Path C:\Users\Admin\AppData\Local\rustdesk\librustdesk.dll
            • Size 34.5MB
            • SHA256 e301faa89ff987bfde010ef286e9b90a9a251a77f1d843d71c370b58f3970f02
            • MD5 SHA1 SHA512 SSDEEP TLSH

            printer_driver_adapter.dll

            • Path C:\Users\Admin\AppData\Local\rustdesk\printer_driver_adapter.dll
            • Size 1.3MB
            • SHA256 3b26e3e8fe82bca48241c16bb7b64c02a2b0d8b691bd1355cc5baa95cacd0162
            • MD5 SHA1 SHA512 SSDEEP TLSH

            rustdesk.exe

            • Path C:\Users\Admin\AppData\Local\rustdesk\rustdesk.exe
            • Size 358KB
            • SHA256 3ccd9d5e1f14d1013d12e79c8426a07cc057510fe6d6676309771f03db2bfbdd
            • MD5 SHA1 SHA512 SSDEEP TLSH

            screen_retriever_plugin.dll

            • Path C:\Users\Admin\AppData\Local\rustdesk\screen_retriever_plugin.dll
            • Size 524KB
            • SHA256 1a697ecc0c7103985eafb47bb540d65dcde62722c8ef3de0b079843c15406c3b
            • MD5 SHA1 SHA512 SSDEEP TLSH

            texture_rgba_renderer_plugin.dll

            • Path C:\Users\Admin\AppData\Local\rustdesk\texture_rgba_renderer_plugin.dll
            • Size 329KB
            • SHA256 86422ea280c8e7832580e09c9b621ea47728c9c69e12482f2227661f19831ef4
            • MD5 SHA1 SHA512 SSDEEP TLSH

            uni_links_desktop_plugin.dll

            • Path C:\Users\Admin\AppData\Local\rustdesk\uni_links_desktop_plugin.dll
            • Size 527KB
            • SHA256 e3d82b056d29a083106319d620015afc2ffe1750d0ec31e5b3562806b978da56
            • MD5 SHA1 SHA512 SSDEEP TLSH

            url_launcher_windows_plugin.dll

            • Path C:\Users\Admin\AppData\Local\rustdesk\url_launcher_windows_plugin.dll
            • Size 333KB
            • SHA256 e5753d4fdc8c07c2012c2abd201a1c509aaaa64a4d0908745bcd4ac990a4763b
            • MD5 SHA1 SHA512 SSDEEP TLSH

            window_manager_plugin.dll

            • Path C:\Users\Admin\AppData\Local\rustdesk\window_manager_plugin.dll
            • Size 553KB
            • SHA256 7a4a074cd90de3f65ee6a9fa9db7fc21417dfa1959c154f5aa0d4cdd0259e728
            • MD5 SHA1 SHA512 SSDEEP TLSH

            window_size_plugin.dll

            • Path C:\Users\Admin\AppData\Local\rustdesk\window_size_plugin.dll
            • Size 522KB
            • SHA256 084613f3450272ffa4d9932f234fcfad690fee8385655fdb8c41b1956cd23bc5
            • MD5 SHA1 SHA512 SSDEEP TLSH

            RustDesk.toml

            • Path C:\Users\Admin\AppData\Roaming\RustDesk\config\RustDesk.toml
            • Size 209B
            • SHA256 39f50986f92d7fe97c4a48b4ba83023d8d6defa6018f8dfb813045320cc4a877
            • MD5 SHA1 SHA512 TLSH

            RustDesk2.toml

            • Path C:\Users\Admin\AppData\Roaming\RustDesk\config\RustDesk2.toml
            • Size 165B
            • SHA256 cb9bf02de77f1863ffb55f2c63184c3027270c30098ce31b9b2ecb4795797c25
            • MD5 SHA1 SHA512 TLSH

            RustDesk2.toml

            • Path C:\Users\Admin\AppData\Roaming\RustDesk\config\RustDesk2.toml
            • Size 119B
            • SHA256 897845d233d02120af8d5949e27d97e25af74195617812c182bf0938635fa069
            • MD5 SHA1 SHA512 TLSH

            memory/1880-244-0x000001F202EB0000-0x000001F203FFF000-memory.dmp

            memory/1880-255-0x000001F202EB0000-0x000001F203FFF000-memory.dmp

            memory/1992-238-0x0000027B96BC0000-0x0000027B97D0F000-memory.dmp

            memory/2944-172-0x00000246102F0000-0x00000246102F1000-memory.dmp

            memory/2944-486-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/2944-243-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/2944-168-0x00000246129E0000-0x0000024613699000-memory.dmp

            memory/2944-1038-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/2944-169-0x00000246129E0000-0x0000024613699000-memory.dmp

            memory/2944-170-0x00000246129E0000-0x0000024613699000-memory.dmp

            memory/2944-306-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/2944-1003-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/2944-342-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/2944-379-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/2944-414-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/2944-450-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/2944-167-0x00000246102E0000-0x00000246102E1000-memory.dmp

            memory/2944-522-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/2944-560-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/2944-597-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/2944-634-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/2944-668-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/2944-706-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/2944-966-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/2944-783-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/2944-894-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/2944-930-0x000002460C300000-0x000002460D44F000-memory.dmp

            memory/4768-711-0x0000020F3CE70000-0x0000020F3DFBF000-memory.dmp

            memory/4768-310-0x0000020F3CE70000-0x0000020F3DFBF000-memory.dmp

            memory/4768-247-0x0000020F3CE70000-0x0000020F3DFBF000-memory.dmp