Analysis

  • max time kernel
    150s
  • max time network
    154s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260709-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260709-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    22/07/2026, 11:16

General

  • Target
    Kopiia_elektronnoho_dokumenta.113674.22.07.2026.exe
  • Size 25.3MB
  • Sample260722-nc8shseb39
  • SHA256 4d94c1c41fdc9d7c77a4cd2eed5d03bebade3bc7f916f75c76fd5e3503f2df2c
  • 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 (511) 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
  • Badlisted process makes network request 2 IoCs

    Network request originating from process or tool commonly abused by malware.

  • 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 16 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\Kopiia_elektronnoho_dokumenta.113674.22.07.2026.exe
    "C:\Users\Admin\AppData\Local\Temp\Kopiia_elektronnoho_dokumenta.113674.22.07.2026.exe"
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1612
    • 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:5604
      • 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:2648
        • 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:4016
          • 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:4484
        • 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:2332
          • 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:4592
  • C:\Windows\system32\msiexec.exe
    C:\Windows\system32\msiexec.exe /V
    1⤵
    • Badlisted process makes network request
    • 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:4548
    • \??\c:\Windows\syswow64\MsiExec.exe
      c:\Windows\syswow64\MsiExec.exe -Embedding 278548E58BE9A6AAD7E4B7AC421B4844
      2⤵
      • Loads dropped DLL
      • System Location Discovery: System Language Discovery
      • Suspicious use of SetWindowsHookEx
      PID:4184
    • \??\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:3852
    • \??\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:5724
    • \??\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:3928
    • \??\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:932
  • \??\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:3700
  • \??\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:1228
    • \??\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:2304
      • \??\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:6040
    • \??\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:1120
    • \??\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:6760

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        e59f7a8.rbs

        • Path C:\Config.Msi\e59f7a8.rbs
        • Size 470KB
        • SHA256 8eff100a5d31f129cd2779ddc2691ea82cf8fbf1b57ce41bb2910bfff30e4044
        • 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

        MSI378C.tmp

        • Path C:\Windows\Installer\MSI378C.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 599f6ad5187389f70428a93356190d225f91770cd6f48471636e04aeef38c2a6
        • MD5 SHA1 SHA512 SSDEEP TLSH

        memory/932-157-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/932-164-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/932-156-0x0000000000BE0000-0x0000000002260000-memory.dmp

        memory/932-163-0x0000000000BE0000-0x0000000002260000-memory.dmp

        memory/1120-236-0x0000000000A40000-0x0000000001BF5000-memory.dmp

        memory/1120-179-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/1120-229-0x0000000000A40000-0x0000000001BF5000-memory.dmp

        memory/1120-178-0x0000000000A40000-0x0000000001BF5000-memory.dmp

        memory/1120-220-0x0000000000A40000-0x0000000001BF5000-memory.dmp

        memory/1120-191-0x0000000000A40000-0x0000000001BF5000-memory.dmp

        memory/1120-209-0x0000000000A40000-0x0000000001BF5000-memory.dmp

        memory/1120-198-0x0000000000A40000-0x0000000001BF5000-memory.dmp

        memory/1228-224-0x0000000000BE0000-0x0000000002260000-memory.dmp

        memory/1228-204-0x0000000000BE0000-0x0000000002260000-memory.dmp

        memory/1228-193-0x0000000000BE0000-0x0000000002260000-memory.dmp

        memory/1228-171-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/1228-170-0x0000000000BE0000-0x0000000002260000-memory.dmp

        memory/1228-213-0x0000000000BE0000-0x0000000002260000-memory.dmp

        memory/1228-183-0x0000000000BE0000-0x0000000002260000-memory.dmp

        memory/1228-231-0x0000000000BE0000-0x0000000002260000-memory.dmp

        memory/2304-177-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/2304-176-0x0000000000A40000-0x0000000001BF5000-memory.dmp

        memory/3700-139-0x0000000000BE0000-0x0000000002260000-memory.dmp

        memory/3700-140-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/3852-112-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/3852-111-0x0000000000A40000-0x0000000001BF5000-memory.dmp

        memory/3928-143-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/3928-142-0x0000000000BE0000-0x0000000002260000-memory.dmp

        memory/4016-27-0x000002019FA80000-0x000002019FAA2000-memory.dmp

        memory/5724-134-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/5724-133-0x0000000000BE0000-0x0000000002260000-memory.dmp

        memory/6040-172-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/6040-169-0x0000000000A40000-0x0000000001BF5000-memory.dmp

        memory/6760-223-0x000000006D280000-0x000000006D9B6000-memory.dmp

        memory/6760-222-0x0000000000BE0000-0x0000000002260000-memory.dmp