Analysis

  • max time kernel
    151s
  • max time network
    146s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    23/07/2026, 18:06

General

  • Target
    2026-07-23_434daad633e2477981cb939a866cde39_cryptbot_icedid_luca-stealer_njrat_stealc.exe
  • Size 25.3MB
  • Sample260723-wp566astcy
  • SHA256 8551388ee38bddd89b24d718583a486c74d454eca64b403c41eda38ec89a5d5a
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Signatures

  • Family: RuRAT

    RuRAT is a remote admin tool sold as legitimate software but regularly abused in malicious phishing campaigns.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • Contacts a large (514) amount of remote hosts 1 TTPs

    This may indicate a network scan to discover remotely running services.

  • Drops startup file 2 IoCs
  • Executes dropped EXE 10 IoCs
  • Loads dropped DLL 11 IoCs
  • Enumerates connected drives 3 TTPs 23 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Drops file in System32 directory 10 IoCs
  • Executes a VBScript file via the Windows Script Host. 1 TTPs 1 IoCs
  • Drops file in Program Files directory 57 IoCs
  • Drops file in Windows directory 23 IoCs
  • Embeds OpenSSL 1 IoCs

    Embeds OpenSSL, may be used to circumvent TLS interception.

  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 2 IoCs

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

  • System Location Discovery: System Language Discovery 1 TTPs 11 IoCs

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

  • System Network Configuration Discovery: Internet Connection Discovery 1 TTPs 2 IoCs

    Adversaries may check for Internet connectivity on compromised systems.

  • Modifies data under HKEY_USERS 48 IoCs
  • Modifies registry class 24 IoCs
  • Runs ping.exe 1 TTPs 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 32 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 2 IoCs
  • Suspicious use of SendNotifyMessage 2 IoCs
  • Suspicious use of SetWindowsHookEx 43 IoCs
  • Suspicious use of WriteProcessMemory 15 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\2026-07-23_434daad633e2477981cb939a866cde39_cryptbot_icedid_luca-stealer_njrat_stealc.exe
    "C:\Users\Admin\AppData\Local\Temp\2026-07-23_434daad633e2477981cb939a866cde39_cryptbot_icedid_luca-stealer_njrat_stealc.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2408
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\ProgramData\install.cmd" "
      2⤵
      • Drops startup file
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:5052
      • C:\Windows\system32\wscript.exe
        wscript "C:\Users\Admin\AppData\Local\Temp\elev.vbs"
        3⤵
        • Executes a VBScript file via the Windows Script Host.
        • Suspicious use of WriteProcessMemory
        PID:3708
        • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
          "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -NoProfile -Command "try{Start-Process msiexec.exe -ArgumentList '/I','c:\ProgramData\KB5094127.msi','/qn' -Verb RunAs -WindowStyle Hidden -ErrorAction Stop -Wait}catch{exit 1}"
          4⤵
          • Command and Scripting Interpreter: PowerShell
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of AdjustPrivilegeToken
          • Suspicious use of WriteProcessMemory
          PID:2132
          • C:\Windows\system32\msiexec.exe
            "C:\Windows\system32\msiexec.exe" /I c:\ProgramData\KB5094127.msi /qn
            5⤵
            • Suspicious use of AdjustPrivilegeToken
            • Suspicious use of SetWindowsHookEx
            PID:3152
        • C:\Windows\System32\cmd.exe
          "C:\Windows\System32\cmd.exe" /c ping -n 2 127.0.0.1 ^>nul ^& del "C:\Users\Admin\AppData\Local\Temp\elev.vbs"
          4⤵
          • Executes a command shell one-liner
          • System Network Configuration Discovery: Internet Connection Discovery
          • Suspicious use of WriteProcessMemory
          PID:3132
          • C:\Windows\system32\PING.EXE
            ping -n 2 127.0.0.1 >nul & del "C:\Users\Admin\AppData\Local\Temp\elev.vbs"
            5⤵
            • System Network Configuration Discovery: Internet Connection Discovery
            • Runs ping.exe
            PID:2892
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Enumerates connected drives
    • Drops file in Program Files directory
    • Drops file in Windows directory
    • Modifies data under HKEY_USERS
    • Modifies registry class
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:296
    • \??\c:\Windows\syswow64\MsiExec.exe
      c:\Windows\syswow64\MsiExec.exe -Embedding 392D8CE798FBCC49992B9FDE214BD552
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:2284
    • \??\c:\Program Files (x86)\Remote Utilities - Host\rfusclient.exe
      "c:\Program Files (x86)\Remote Utilities - Host\rfusclient.exe" -msi_copy "c:\ProgramData\KB5094127.msi"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:5936
    • \??\c:\Program Files (x86)\Remote Utilities - Host\rutserv.exe
      "c:\Program Files (x86)\Remote Utilities - Host\rutserv.exe" /silentinstall
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:1848
    • \??\c:\Program Files (x86)\Remote Utilities - Host\rutserv.exe
      "c:\Program Files (x86)\Remote Utilities - Host\rutserv.exe" -firewall
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:3696
    • \??\c:\Program Files (x86)\Remote Utilities - Host\rutserv.exe
      "c:\Program Files (x86)\Remote Utilities - Host\rutserv.exe" /start
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:5608
  • \??\c:\Program Files (x86)\Remote Utilities - Host\rutserv.exe
    "c:\Program Files (x86)\Remote Utilities - Host\rutserv.exe" -service
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    PID:4500
  • \??\c:\Program Files (x86)\Remote Utilities - Host\rutserv.exe
    "c:\Program Files (x86)\Remote Utilities - Host\rutserv.exe" -service
    1⤵
    • Executes dropped EXE
    • Loads dropped DLL
    • Drops file in System32 directory
    • System Location Discovery: System Language Discovery
    • Modifies data under HKEY_USERS
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:5900
    • \??\c:\Program Files (x86)\Remote Utilities - Host\rfusclient.exe
      "c:\Program Files (x86)\Remote Utilities - Host\rfusclient.exe"
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      • Suspicious use of WriteProcessMemory
      PID:1696
      • \??\c:\Program Files (x86)\Remote Utilities - Host\rfusclient.exe
        "c:\Program Files (x86)\Remote Utilities - Host\rfusclient.exe" /tray
        3⤵
        • Executes dropped EXE
        • Loads dropped DLL
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of SetWindowsHookEx
        PID:4060
    • \??\c:\Program Files (x86)\Remote Utilities - Host\rfusclient.exe
      "c:\Program Files (x86)\Remote Utilities - Host\rfusclient.exe" /tray
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:2108
    • \??\c:\Program Files (x86)\Remote Utilities - Host\rutserv.exe
      "c:\Program Files (x86)\Remote Utilities - Host\rutserv.exe" -firewall
      2⤵
      • Executes dropped EXE
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Modifies data under HKEY_USERS
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of SetWindowsHookEx
      PID:7672

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        e595a4e.rbs

        • Path C:\Config.Msi\e595a4e.rbs
        • Size 470KB
        • SHA256 9d43603d2f4198decc51962a7dbfee94f7f44a9cb7eaa1ad57593282f8282c30
        • MD5 SHA1 SHA512 SSDEEP TLSH

        rfusclient.exe

        • Path C:\Program Files (x86)\Remote Utilities - Host\rfusclient.exe
        • Size 17.0MB
        • SHA256 e4b203c315f44799e4945c3b95501b9bf5480bda5ff596dadbfebdb39996020a
        • MD5 SHA1 SHA512 SSDEEP TLSH

        rutserv.exe

        • Path C:\Program Files (x86)\Remote Utilities - Host\rutserv.exe
        • Size 21.7MB
        • SHA256 6fc8237bbb1cb778bf7735fd92963cd1f95acd44e7c987c40e9349ed5be85327
        • MD5 SHA1 SHA512 SSDEEP TLSH

        install.cmd

        • Path C:\ProgramData\install.cmd
        • Size 1KB
        • SHA256 1e0d2c3c5d21c16344563ef4d4ddc1a147d130d977c2f9346813d31ed92d3df6
        • MD5 SHA1 SHA512 TLSH

        elev.vbs

        • Path C:\Users\Admin\AppData\Local\Temp\elev.vbs
        • Size 706B
        • SHA256 3fbe0ce1a61cc0f0034bc88f76cdf167c5cdb13355788c1a90318d2bb2bb3cd8
        • MD5 SHA1 SHA512 TLSH

        MSI5EEF.tmp

        • Path C:\Windows\Installer\MSI5EEF.tmp
        • Size 165KB
        • SHA256 1f6f0d9f136bc170cfbc48a1015113947087ac27aed1e3e91673ffc91b9f390b
        • MD5 SHA1 SHA512 SSDEEP TLSH

        EULA.rtf

        • Path \??\c:\Program Files (x86)\Remote Utilities - Host\EULA.rtf
        • Size 63KB
        • SHA256 ff89e44b7e6b7c8c9a84c67e40bde6491f851b0e6e4143ac8f665538eec11e87
        • MD5 SHA1 SHA512 SSDEEP TLSH

        Privacy_policy.rtf

        • Path \??\c:\Program Files (x86)\Remote Utilities - Host\Privacy_policy.rtf
        • Size 139KB
        • SHA256 1fcb0c18d74b4157752a5776ca47bf31f893453b4bcb82ba67b402769d054c26
        • MD5 SHA1 SHA512 SSDEEP TLSH

        eventmsg.dll

        • Path \??\c:\Program Files (x86)\Remote Utilities - Host\eventmsg.dll
        • Size 57KB
        • SHA256 badd947460e6ac9ef7d9abc286054b5b73e17ab5694f827f26d56203974f1ea2
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libasset32.dll

        • Path \??\c:\Program Files (x86)\Remote Utilities - Host\libasset32.dll
        • Size 9.4MB
        • SHA256 299b3f5e49d3303e0a4793fee52a1165c340a560729115f1a4d421d6f0416fa5
        • MD5 SHA1 SHA512 SSDEEP TLSH

        libcodec32.dll

        • Path \??\c:\Program Files (x86)\Remote Utilities - Host\libcodec32.dll
        • Size 5.9MB
        • SHA256 a4a53244ea6bafa55c6f1c4b13da9a6a77e758842593e51b01b34dc137465930
        • MD5 SHA1 SHA512 SSDEEP TLSH

        licenses.txt

        • Path \??\c:\Program Files (x86)\Remote Utilities - Host\licenses.txt
        • Size 19KB
        • SHA256 4ef24da2e7933364af0c7918207927283d0b7664c615b888cc80843d7a62faa4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        vp8decoder.dll

        • Path \??\c:\Program Files (x86)\Remote Utilities - Host\vp8decoder.dll
        • Size 384KB
        • SHA256 851093c801f9f2f3ba670ff2c14c0a673b17efd72731c28a49ca3dcb64b57718
        • MD5 SHA1 SHA512 SSDEEP TLSH

        vp8encoder.dll

        • Path \??\c:\Program Files (x86)\Remote Utilities - Host\vp8encoder.dll
        • Size 1.6MB
        • SHA256 1fad67e1677401751b4c1ef7d18167174f72c247d8656e99a91104901d1b1400
        • MD5 SHA1 SHA512 SSDEEP TLSH

        webmmux.dll

        • Path \??\c:\Program Files (x86)\Remote Utilities - Host\webmmux.dll
        • Size 264KB
        • SHA256 1a1b4441fc6fdaf8b9d4a5de3e5855e15217e3810f4aca21a5ca9bb70afab5b4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        webmvorbisdecoder.dll

        • Path \??\c:\Program Files (x86)\Remote Utilities - Host\webmvorbisdecoder.dll
        • Size 369KB
        • SHA256 2d2a368c897f3aadeb4a8d0f46016f0148799fdc7b18059f1a6cce62883ae7de
        • MD5 SHA1 SHA512 SSDEEP TLSH

        webmvorbisencoder.dll

        • Path \??\c:\Program Files (x86)\Remote Utilities - Host\webmvorbisencoder.dll
        • Size 864KB
        • SHA256 f858c62cac8d5063a3cffb8a7beb241725b94ab326e0bd2442dacb8e70461721
        • MD5 SHA1 SHA512 SSDEEP TLSH

        KB5094127.msi

        • Path \??\c:\ProgramData\KB5094127.msi
        • Size 27.6MB
        • SHA256 11e751c8d6ff2bd41983c86810db3fff5bee28cebec964c53874f555b1c3f8ae
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/1696-184-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/1696-183-0x0000000000840000-0x00000000019F5000-memory.dmp

        memory/1848-134-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/1848-133-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/2108-252-0x0000000000840000-0x00000000019F5000-memory.dmp

        memory/2108-217-0x0000000000840000-0x00000000019F5000-memory.dmp

        memory/2108-199-0x0000000000840000-0x00000000019F5000-memory.dmp

        memory/2108-185-0x0000000000840000-0x00000000019F5000-memory.dmp

        memory/2108-192-0x0000000000840000-0x00000000019F5000-memory.dmp

        memory/2108-245-0x0000000000840000-0x00000000019F5000-memory.dmp

        memory/2108-238-0x0000000000840000-0x00000000019F5000-memory.dmp

        memory/2108-231-0x0000000000840000-0x00000000019F5000-memory.dmp

        memory/2108-186-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/2108-224-0x0000000000840000-0x00000000019F5000-memory.dmp

        memory/2108-259-0x0000000000840000-0x00000000019F5000-memory.dmp

        memory/2108-206-0x0000000000840000-0x00000000019F5000-memory.dmp

        memory/2132-27-0x00000167FB060000-0x00000167FB082000-memory.dmp

        memory/3696-141-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/3696-142-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/4060-173-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/4060-172-0x0000000000840000-0x00000000019F5000-memory.dmp

        memory/4500-140-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/4500-139-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/5608-165-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/5608-164-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/5608-154-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/5608-153-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/5900-226-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/5900-233-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/5900-261-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/5900-254-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/5900-167-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/5900-219-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/5900-166-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/5900-194-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/5900-155-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/5900-208-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/5900-201-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/5900-240-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/5900-187-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/5900-247-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/5936-111-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/5936-110-0x0000000000840000-0x00000000019F5000-memory.dmp

        memory/7672-212-0x00000000001A0000-0x0000000001820000-memory.dmp

        memory/7672-213-0x000000006D280000-0x000000006D9B6000-memory.dmp