Analysis

  • max time kernel
    148s
  • max time network
    141s
  • 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.gsjo.exe
  • Size 1024KB
  • Sample261006-rcjeeazzet
  • SHA256 ad387a81949f04aeca76e94cab5e8bbff1e70e9d1183c8390aec87b2f187f9e4
  • MD5 SHA1 SHA512 SSDEEP TLSH

Malware Config

Extracted

Language
  • ps1

Deobfuscated
Source
URLs
  • exe.dropper

    http://api.mysuperprojectnumone.xyz/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 2 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 2 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 3 IoCs
  • 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 4 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 8 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 18 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 4 IoCs

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

  • Suspicious behavior: EnumeratesProcesses 7 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of SetWindowsHookEx 4 IoCs
  • Suspicious use of WriteProcessMemory 45 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Downloader.Win32.Upatre.gsjo.exe
    "C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Downloader.Win32.Upatre.gsjo.exe"
    1⤵
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4960
    • C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Downloader.Win32.Upatre.gsjo.exe
      "C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Downloader.Win32.Upatre.gsjo.exe"
      2⤵
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4816
      • C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe
        "C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe"
        3⤵
        • Executes dropped EXE
        • System Location Discovery: System Language Discovery
        • Suspicious use of SetWindowsHookEx
        • Suspicious use of WriteProcessMemory
        PID:5620
        • 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:2832
          • 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:2068
          • 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:3036
          • 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:4896
            • 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:936
      • C:\Windows\SysWOW64\cmd.exe
        "C:\Windows\System32\cmd.exe" /c taskkill /im jaffacakes118_Trojan-Downloader.Win32.Upatre.gsjo.exe /f & erase C:\Users\Admin\AppData\Local\Temp\jaffacakes118_Trojan-Downloader.Win32.Upatre.gsjo.exe & exit
        3⤵
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5712
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /im jaffacakes118_Trojan-Downloader.Win32.Upatre.gsjo.exe /f
          4⤵
          • System Location Discovery: System Language Discovery
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:8
  • C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe
    C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:3068
    • C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe
      C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe
      2⤵
      • 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:5368
      • 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
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:2776
      • 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
        3⤵
        • System Location Discovery: System Language Discovery
        • Scheduled Task/Job: Scheduled Task
        PID:4208
      • 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
        3⤵
        • Drops file in Windows directory
        • Executes a command shell one-liner
        • System Location Discovery: System Language Discovery
        • Suspicious use of WriteProcessMemory
        PID:5612
        • C:\Windows\SysWOW64\cscript.exe
          cscript CreateShortcut.vbs
          4⤵
          • Creates a file in the Startup directory
          • Executes a VBScript file via the Windows Script Host.
          • System Location Discovery: System Language Discovery
          PID:4568
  • C:\PROGRA~3\MICROS~3\Windows\System32\Isass.exe
    C:\PROGRA~3\MICROS~3\Windows\System32\Isass.exe
    1⤵
    • Executes dropped EXE
    • System Location Discovery: System Language Discovery
    • Suspicious use of SetWindowsHookEx
    • Suspicious use of WriteProcessMemory
    PID:4696
    • 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:5304
  • 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:5840
    • 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:2736
      • 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:2480

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

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        Downloads

        Isass.exe

        • Path C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe
        • Size 1024KB
        • SHA256 ad387a81949f04aeca76e94cab5e8bbff1e70e9d1183c8390aec87b2f187f9e4
        • MD5 SHA1 SHA512 SSDEEP TLSH

        WindowHelperStorageHostSystemThread.ps1

        • Path C:\ProgramData\WindowsAppCertification\WindowHelperStorageHostSystemThread.ps1
        • Size 386B
        • SHA256 398ed220f1a7d17d5e7725d94de020876e3701d382e4b78fd852e714de51eaad
        • 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

        Isass.lnk

        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Isass.lnk
        • Size 1KB
        • SHA256 4782ff875a7ab44220302090211f7e3a0d6b7cae0c6de12f99df8cde5c81b9b4
        • MD5 SHA1 SHA512 TLSH

        memory/2480-30-0x00000265CCE50000-0x00000265CCE72000-memory.dmp

        memory/2832-47-0x0000000000400000-0x0000000000474000-memory.dmp

        memory/2832-57-0x0000000000400000-0x0000000000474000-memory.dmp

        memory/4816-8-0x0000000000400000-0x0000000000474000-memory.dmp

        memory/4816-4-0x00000000001C0000-0x00000000001C1000-memory.dmp

        memory/4960-3-0x0000000002350000-0x0000000002357000-memory.dmp

        memory/4960-2-0x0000000002350000-0x0000000002357000-memory.dmp

        memory/5304-38-0x0000000000400000-0x0000000000474000-memory.dmp

        memory/5368-48-0x0000000000400000-0x0000000000474000-memory.dmp