Analysis

  • max time kernel
    149s
  • max time network
    142s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260911-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260911-enlocale:en-usos:windows10-2004-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.

  • Checks computer location settings 2 TTPs 3 IoCs

    Looks up country code configured in the registry, likely geofence.

  • 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:4608
    • 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⤵
      • Checks computer location settings
      • Reads the TCP/IP host and domain name from the registry
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4128
      • 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:5096
        • C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe
          "C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe"
          4⤵
          • Checks computer location settings
          • 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:4160
          • 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:2104
          • 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:4784
          • 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:1192
            • 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:3240
      • 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:4336
        • 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:2800
  • 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:4968
    • C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe
      "C:\ProgramData\MicrosoftCorporation\Windows\System32\Isass.exe"
      2⤵
      • Executes dropped EXE
      PID:4800
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4800 -s 432
        3⤵
        • Program crash
        PID:4108
  • 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:3104
    • 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:2580
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4800 -ip 4800
    1⤵
      PID:4948
    • C:\Windows\System32\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\ProgramData\WindowsAppCertification\checker.vbs"
      1⤵
      • Checks computer location settings
      • Executes a VBScript file via the Windows Script Host.
      • Suspicious use of WriteProcessMemory
      PID:1452
      • 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:3564
        • 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:660

    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

          Isass.exe.log

          • Path C:\Users\Admin\AppData\Local\Microsoft\CLR_v2.0_32\UsageLogs\Isass.exe.log
          • Size 496B
          • SHA256 8d0edecf54cbbdf7981c8e41a3ed8621503188a87415f9af0fb8d890b138c349
          • MD5 SHA1 SHA512 TLSH

          CreateShortcut.vbs

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

          __PSScriptPolicyTest_l2ww5oo0.qfb.ps1

          • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_l2ww5oo0.qfb.ps1
          • Size 60B
          • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
          • MD5 SHA1 SHA512 TLSH

          memory/660-74-0x000001E814960000-0x000001E814982000-memory.dmp

          memory/2580-78-0x0000000000400000-0x0000000000473000-memory.dmp

          memory/4128-9-0x0000000000400000-0x0000000000473000-memory.dmp

          memory/4128-6-0x0000000000400000-0x0000000000473000-memory.dmp

          memory/4128-3-0x0000000000400000-0x0000000000473000-memory.dmp

          memory/4128-4-0x0000000000400000-0x0000000000473000-memory.dmp

          memory/4128-5-0x0000000000400000-0x0000000000473000-memory.dmp

          memory/4128-7-0x0000000000400000-0x0000000000473000-memory.dmp

          memory/4160-33-0x0000000000400000-0x0000000000473000-memory.dmp

          memory/4608-18-0x0000000074750000-0x0000000074D01000-memory.dmp

          memory/4608-25-0x0000000074750000-0x0000000074D01000-memory.dmp

          memory/4608-0-0x0000000001100000-0x0000000001110000-memory.dmp

          memory/4608-2-0x0000000074750000-0x0000000074D01000-memory.dmp

          memory/4608-1-0x0000000074752000-0x0000000074754000-memory.dmp

          memory/4800-60-0x0000000000600000-0x0000000000673000-memory.dmp

          memory/4800-56-0x0000000000600000-0x0000000000673000-memory.dmp

          memory/5096-38-0x0000000074750000-0x0000000074D01000-memory.dmp

          memory/5096-23-0x0000000074750000-0x0000000074D01000-memory.dmp

          memory/5096-22-0x0000000074750000-0x0000000074D01000-memory.dmp