Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows11-21h2_x64
  • resource
    win11-20251223-en
  • resource tags

    arch:x64arch:x86image:win11-20251223-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    18/12/2025, 20:00

General

  • Target
    JaffaCakes118_37b3112a8628c39b58c956d7bf860cdd.exe
  • Size 769KB
  • Sample251218-yrf16adp21
  • SHA256 225b5ae481631d5dc9c745c430e5647752ad6665cda9fcd72eb8d2c094d0ed90
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Signatures

  • Detects Renamer worm. 2 IoCs

    Renamer aka Grename is worm written in Delphi.

  • Renamer family
  • Renamer, Grenam

    Renamer aka Grenam is a worm written in Delphi.

  • Command and Scripting Interpreter: PowerShell 1 TTPs 1 IoCs

    Run Powershell to modify Windows Defender settings to add exclusions for file extensions, paths, and processes.

  • Drops autorun.inf file 1 TTPs 2 IoCs

    Malware can abuse Windows Autorun to spread further via attached volumes.

  • Suspicious use of SetThreadContext 1 IoCs
  • Drops file in Program Files directory 64 IoCs
  • Drops file in Windows directory 1 IoCs
  • Enumerates physical storage devices 1 TTPs

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

  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

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

  • Modifies registry class 1 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_37b3112a8628c39b58c956d7bf860cdd.exe
    "C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_37b3112a8628c39b58c956d7bf860cdd.exe"
    1⤵
    • Suspicious use of SetThreadContext
    • System Location Discovery: System Language Discovery
    • Modifies registry class
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:4636
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\_Mkzbgyken.vbs"
      2⤵
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:5320
      • C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
        "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath C:\,'C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\seed\seed.exe'
        3⤵
        • Command and Scripting Interpreter: PowerShell
        • System Location Discovery: System Language Discovery
        • Suspicious behavior: EnumeratesProcesses
        • Suspicious use of AdjustPrivilegeToken
        PID:3612
    • C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_37b3112a8628c39b58c956d7bf860cdd.exe
      C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_37b3112a8628c39b58c956d7bf860cdd.exe
      2⤵
      • Drops autorun.inf file
      • Drops file in Program Files directory
      • Drops file in Windows directory
      • System Location Discovery: System Language Discovery
      PID:6060

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        vjavaws.ico

        • Path C:\Program Files\Java\jdk-1.8\bin\vjavaws.ico
        • Size 4KB
        • SHA256 611f2cb2e03bd8dbcb584cd0a1c48accfba072dd3fc4e6d3144e2062553637f5
        • MD5 SHA1 SHA512 SSDEEP

        vIntegratedOffice.ico

        • Path C:\Program Files\Microsoft Office 15\ClientX64\vIntegratedOffice.ico
        • Size 4KB
        • SHA256 a058bfd185fe714927e15642004866449bce425d34292a08af56d66cf03ebe6c
        • MD5 SHA1 SHA512 SSDEEP

        vmisc.ico

        • Path C:\Program Files\Microsoft Office\root\vfs\Windows\Installer\{90160000-001F-0C0A-1000-0000000FF1CE}\vmisc.ico
        • Size 4KB
        • SHA256 3cc5043caa157e5f9b1870527b8c323850bdae1e58d6760e4e895d2ab8a35a05
        • MD5 SHA1 SHA512 SSDEEP

        _Mkzbgyken.vbs

        • Path C:\Users\Admin\AppData\Local\Temp\_Mkzbgyken.vbs
        • Size 177B
        • SHA256 1bef853969b7edeebf8b194b052074961267ebc7abc069144c152719890b6e6a
        • MD5 SHA1 SHA512

        __PSScriptPolicyTest_sdreolek.43t.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_sdreolek.43t.ps1
        • Size 60B
        • SHA256 96ad1146eb96877eab5942ae0736b82d8b5e2039a80d3d6932665c1a4c87dcf7
        • MD5 SHA1 SHA512

        Paint.exe

        • Path C:\Users\Admin\AppData\Roaming\Paint.exe
        • Size 769KB
        • SHA256 225b5ae481631d5dc9c745c430e5647752ad6665cda9fcd72eb8d2c094d0ed90
        • MD5 SHA1 SHA512 SSDEEP

        autorun.inf

        • Path F:\autorun.inf
        • Size 102B
        • SHA256 94e323bd9071db7369ade16f45454e7a0dbfb6a39efddc1234c4719d1f7ee4c2
        • MD5 SHA1 SHA512

        memory/3612-2231-0x0000000006FC0000-0x0000000006FDE000-memory.dmp

        memory/3612-2301-0x0000000007450000-0x000000000746A000-memory.dmp

        memory/3612-2295-0x0000000007100000-0x000000000711A000-memory.dmp

        memory/3612-2296-0x0000000007180000-0x000000000718A000-memory.dmp

        memory/3612-2297-0x0000000007390000-0x0000000007426000-memory.dmp

        memory/3612-2298-0x0000000007310000-0x0000000007321000-memory.dmp

        memory/3612-2250-0x0000000006FE0000-0x0000000007084000-memory.dmp

        memory/3612-2299-0x0000000007340000-0x000000000734E000-memory.dmp

        memory/3612-2223-0x0000000070940000-0x000000007098C000-memory.dmp

        memory/3612-2221-0x00000000063A0000-0x00000000063D4000-memory.dmp

        memory/3612-2300-0x0000000007350000-0x0000000007365000-memory.dmp

        memory/3612-2294-0x0000000007750000-0x0000000007DCA000-memory.dmp

        memory/3612-2060-0x0000000005E00000-0x0000000005E4C000-memory.dmp

        memory/3612-2059-0x0000000005DB0000-0x0000000005DCE000-memory.dmp

        memory/3612-2058-0x00000000058E0000-0x0000000005C37000-memory.dmp

        memory/3612-2302-0x0000000007440000-0x0000000007448000-memory.dmp

        memory/3612-2051-0x0000000005870000-0x00000000058D6000-memory.dmp

        memory/3612-2050-0x0000000005800000-0x0000000005866000-memory.dmp

        memory/3612-2049-0x0000000004F10000-0x0000000004F32000-memory.dmp

        memory/3612-2048-0x0000000004FE0000-0x000000000560A000-memory.dmp

        memory/3612-2047-0x00000000025C0000-0x00000000025F6000-memory.dmp

        memory/4636-101-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-13-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-93-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-89-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-87-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-85-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-83-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-81-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-79-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-77-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-75-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-71-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-69-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-67-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-65-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-63-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-61-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-59-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-57-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-55-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-53-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-51-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-49-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-45-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-43-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-41-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-39-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-37-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-35-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-33-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-31-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-29-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-27-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-25-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-19-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-17-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-15-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-95-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-11-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-117-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-91-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-73-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-47-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-23-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-97-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-1-0x0000000005DA0000-0x0000000006346000-memory.dmp

        memory/4636-2-0x00000000056D0000-0x0000000005762000-memory.dmp

        memory/4636-99-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-0-0x0000000000B70000-0x0000000000C36000-memory.dmp

        memory/4636-103-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-105-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-107-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-109-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-111-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-113-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-115-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-119-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-121-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-123-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-125-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-127-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-129-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-131-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-133-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-21-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-8-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-9-0x00000000070E0000-0x0000000007147000-memory.dmp

        memory/4636-7-0x00000000070E0000-0x000000000714E000-memory.dmp

        memory/4636-6-0x00000000057D0000-0x00000000057E0000-memory.dmp

        memory/4636-5-0x0000000006DC0000-0x0000000006E66000-memory.dmp

        memory/4636-4-0x0000000005780000-0x000000000578A000-memory.dmp

        memory/4636-3-0x00000000057D0000-0x00000000057E0000-memory.dmp

        memory/6060-2046-0x0000000002C80000-0x0000000002C81000-memory.dmp

        memory/6060-2045-0x0000000000400000-0x00000000004DB000-memory.dmp

        memory/6060-2305-0x0000000000400000-0x00000000004DB000-memory.dmp

        memory/6060-2306-0x0000000002C80000-0x0000000002C81000-memory.dmp