Analysis

  • max time kernel
    148s
  • max time network
    126s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    06/10/2026, 14:02

General

  • Target
    jaffacakes118_Trojan-Downloader.Win32.Upatre.gnre.exe
  • Size 800KB
  • Sample261006-rb89fazzdy
  • SHA256 516f412c644806e839fe3c6070d83056f2a61d80cc6f23e642c0610676b9c984
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    http://api.googleanalistics7431.ru/2.0/method/update

Signatures

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell and hide display window.

  • Creates a file in the Startup directory 1 TTPs 1 IoCs

    A file was written to a Windows startup folder. Files in these directories are executed automatically when a user logs on or an application initializes.

  • Executes dropped EXE 6 IoCs
  • Adds Run key to start application 2 TTPs 1 IoCs
  • Enumerates connected drives 3 TTPs 1 IoCs

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

  • Executes a VBScript file via the Windows Script Host. 1 TTPs 2 IoCs
  • Suspicious use of SetThreadContext 4 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • Executes a command shell one-liner 1 TTPs 3 IoCs

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

  • Program crash 1 IoCs
  • Reads the TCP/IP host and domain name from the registry 1 TTPs 6 IoCs

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

  • System Location Discovery: System Language Discovery 1 TTPs 13 IoCs

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

  • Kills process with taskkill 1 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 5 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 37 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Downloader.Win32.Upatre.gnre.exe
    "C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Downloader.Win32.Upatre.gnre.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:5368
    • C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Downloader.Win32.Upatre.gnre.exe
      "C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Downloader.Win32.Upatre.gnre.exe"
      2⤵
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:1236
      • C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe
        "C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe"
        3⤵
        • Executes dropped EXE
        • Suspicious use of SetThreadContext
        • System Location Discovery: System Language Discovery
        • Suspicious use of AdjustPrivilegeToken
        • Suspicious use of WriteProcessMemory
        PID:5468
        • C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe
          "C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe"
          4⤵
          • Executes dropped EXE
          • Adds Run key to start application
          • Reads the TCP/IP host and domain name from the registry
          • System Location Discovery: System Language Discovery
          • Suspicious behavior: EnumeratesProcesses
          • Suspicious use of WriteProcessMemory
          PID:5284
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 30 /TN "Windows_Antimalware_Host" /TR "C:\ProgramData\WindowsAppCertification\checker.vbs" /F
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:404
          • C:\Windows\SysWOW64\schtasks.exe
            "C:\Windows\System32\schtasks.exe" /Create /SC MINUTE /MO 5 /TN "Windows_Antimalware_Host_Systm" /TR "C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe" /F
            5⤵
            • System Location Discovery: System Language Discovery
            • Scheduled Task/Job: Scheduled Task
            PID:4932
          • C:\Windows\SysWOW64\cmd.exe
            "C:\Windows\System32\cmd.exe" /c echo Set oWS = WScript.CreateObject("WScript.Shell") > CreateShortcut.vbs & echo sLinkFile = "%USERPROFILE%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Isass.lnk" >> CreateShortcut.vbs & echo Set oLink = oWS.CreateShortcut(sLinkFile) >> CreateShortcut.vbs & echo oLink.TargetPath = "C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe" >> CreateShortcut.vbs & echo oLink.Save >> CreateShortcut.vbs & cscript CreateShortcut.vbs & del CreateShortcut.vbs
            5⤵
            • Executes a command shell one-liner
            • System Location Discovery: System Language Discovery
            • Suspicious use of WriteProcessMemory
            PID:5280
            • C:\Windows\SysWOW64\cscript.exe
              cscript CreateShortcut.vbs
              6⤵
              • Creates a file in the Startup directory
              • Executes a VBScript file via the Windows Script Host.
              • System Location Discovery: System Language Discovery
              PID:3792
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c taskkill /im jaffacakes118_Trojan-Downloader.Win32.Upatre.gnre.exe /f & erase C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Downloader.Win32.Upatre.gnre.exe & exit
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:4492
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /im jaffacakes118_Trojan-Downloader.Win32.Upatre.gnre.exe /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:2860
  • C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe
    C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3108
    • C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe
      "C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe"
      2⤵
      • Executes dropped EXE
      PID:5084
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 5084 -s 500
        3⤵
        • Program crash
        PID:1216
  • C:\PROGRA~3\MICROS~3\Windows\System32\Isass.exe
    C:\PROGRA~3\MICROS~3\Windows\System32\Isass.exe
    1⤵
    • Executes dropped EXE
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:3544
    • C:\PROGRA~3\MICROS~3\Windows\System32\Isass.exe
      "C:\PROGRA~3\MICROS~3\Windows\System32\Isass.exe"
      2⤵
      • Executes dropped EXE
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      PID:3312
  • C:\Windows\System32\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\ProgramData\WindowsAppCertification\checker.vbs"
    1⤵
    • Executes a VBScript file via the Windows Script Host.
    • Suspicious use of WriteProcessMemory
    PID:2512
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c ""C:\ProgramData\WindowsAppCertification\cert.cmd" "
      2⤵
      • Executes a command shell one-liner
      • Suspicious use of WriteProcessMemory
      PID:6080
      • C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
        powershell -WindowStyle Hidden -ExecutionPolicy Bypass -NoP -file C:\ProgramData\WindowsAppCertification\WindowHelperStorageHostSystemThread.ps1
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • Enumerates connected drives
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:1328
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 440 -p 5084 -ip 5084
    1⤵
      PID:1552

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          Isass.exe

          • Path C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe
          • Size 800KB
          • SHA256 516f412c644806e839fe3c6070d83056f2a61d80cc6f23e642c0610676b9c984
          • MD5 SHA1 SHA512 SSDEEP TLSH

          WindowHelperStorageHostSystemThread.ps1

          • Path C:\ProgramData\WindowsAppCertification\WindowHelperStorageHostSystemThread.ps1
          • Size 385B
          • SHA256 244a6c0882dfbec5516114e08487c884c7a460f44ed433fd3e7a18b2c02fc7ae
          • MD5 SHA1 SHA512 TLSH

          cert.cmd

          • Path C:\ProgramData\WindowsAppCertification\cert.cmd
          • Size 157B
          • SHA256 9ad1b0c67aa745cb2ab0f1238df71ba4f3b7742f572acf64d13c9876b34c42a2
          • MD5 SHA1 SHA512 TLSH

          checker.vbs

          • Path C:\ProgramData\WindowsAppCertification\checker.vbs
          • Size 112B
          • SHA256 6d02b3b430d85bd64bc3b4ade00e7cb2a474638517fb404fb459feb90980a522
          • MD5 SHA1 SHA512 TLSH

          CreateShortcut.vbs

          • Path C:\Users\Admin\AppData\Local\Temp\CreateShortcut.vbs
          • Size 301B
          • SHA256 e09cdf3b409359ce825a2f2d7374bfc0e2ec73918c0b8a99bf82020983b5f061
          • MD5 SHA1 SHA512 TLSH

          memory/1236-9-0x0000000000400000-0x0000000000473000-memory.dmp

          memory/1236-5-0x0000000000400000-0x0000000000473000-memory.dmp

          memory/1236-4-0x0000000000400000-0x0000000000473000-memory.dmp

          memory/1236-3-0x0000000000400000-0x0000000000473000-memory.dmp

          memory/1236-6-0x0000000000400000-0x0000000000473000-memory.dmp

          memory/1236-7-0x0000000000400000-0x0000000000473000-memory.dmp

          memory/1328-57-0x000002131E330000-0x000002131E352000-memory.dmp

          memory/3312-54-0x0000000000400000-0x0000000000473000-memory.dmp

          memory/5084-44-0x0000000000900000-0x0000000000973000-memory.dmp

          memory/5084-40-0x0000000000900000-0x0000000000973000-memory.dmp

          memory/5284-21-0x0000000000400000-0x0000000000473000-memory.dmp

          memory/5368-0-0x0000000001040000-0x0000000001050000-memory.dmp

          memory/5368-11-0x0000000074790000-0x0000000074DB1000-memory.dmp

          memory/5368-10-0x0000000074790000-0x0000000074DB1000-memory.dmp

          memory/5368-2-0x0000000074790000-0x0000000074DB1000-memory.dmp

          memory/5368-1-0x0000000074792000-0x0000000074794000-memory.dmp

          memory/5468-13-0x00000000739F2000-0x00000000739F4000-memory.dmp