Analysis

  • max time kernel
    149s
  • max time network
    127s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20251223-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20251223-enlocale:en-usos:windows10-2004-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.

  • Checks computer location settings 2 TTPs 2 IoCs

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

  • 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⤵
    • Checks computer location settings
    • 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:4836
    • C:\Windows\SysWOW64\WScript.exe
      "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\Temp\_Mkzbgyken.vbs"
      2⤵
      • Checks computer location settings
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:6632
      • 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:6744
    • 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:6668

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_c3s1lvjb.32e.ps1

        • Path C:\Users\Admin\AppData\Local\Temp\__PSScriptPolicyTest_c3s1lvjb.32e.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/4836-55-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-47-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-4-0x00000000054E0000-0x00000000054EA000-memory.dmp

        memory/4836-5-0x0000000006530000-0x00000000065D6000-memory.dmp

        memory/4836-6-0x00000000053F0000-0x0000000005400000-memory.dmp

        memory/4836-7-0x00000000069A0000-0x0000000006A0E000-memory.dmp

        memory/4836-15-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-23-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-133-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-131-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-129-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-127-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-123-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-121-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-119-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-117-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-115-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-113-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-111-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-109-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-107-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-105-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-103-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-101-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-99-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-97-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-95-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-93-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-91-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-87-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-85-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-83-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-81-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-79-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-77-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-75-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-73-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-71-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-69-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-67-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-65-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-63-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-61-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-59-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-57-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-2-0x0000000005400000-0x0000000005492000-memory.dmp

        memory/4836-53-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-49-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-3-0x00000000053F0000-0x0000000005400000-memory.dmp

        memory/4836-0-0x0000000000A00000-0x0000000000AC6000-memory.dmp

        memory/4836-43-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-41-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-40-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-37-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-35-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-33-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-31-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-29-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-27-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-25-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-21-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-19-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-17-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-13-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-11-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-9-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-125-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-89-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-51-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-8-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/4836-1-0x0000000005880000-0x0000000005E24000-memory.dmp

        memory/4836-45-0x00000000069A0000-0x0000000006A07000-memory.dmp

        memory/6668-2046-0x0000000000F70000-0x0000000000F71000-memory.dmp

        memory/6668-2306-0x0000000000F70000-0x0000000000F71000-memory.dmp

        memory/6668-2305-0x0000000000400000-0x00000000004DB000-memory.dmp

        memory/6668-2045-0x0000000000400000-0x00000000004DB000-memory.dmp

        memory/6744-2301-0x0000000007650000-0x000000000766A000-memory.dmp

        memory/6744-2295-0x0000000007300000-0x000000000731A000-memory.dmp

        memory/6744-2065-0x0000000005FE0000-0x0000000005FFE000-memory.dmp

        memory/6744-2066-0x0000000006010000-0x000000000605C000-memory.dmp

        memory/6744-2222-0x00000000065A0000-0x00000000065D2000-memory.dmp

        memory/6744-2050-0x0000000005890000-0x00000000058F6000-memory.dmp

        memory/6744-2224-0x00000000703A0000-0x00000000703EC000-memory.dmp

        memory/6744-2047-0x0000000004A10000-0x0000000004A46000-memory.dmp

        memory/6744-2051-0x00000000059B0000-0x0000000005A16000-memory.dmp

        memory/6744-2297-0x0000000007590000-0x0000000007626000-memory.dmp

        memory/6744-2294-0x0000000007940000-0x0000000007FBA000-memory.dmp

        memory/6744-2057-0x0000000005A20000-0x0000000005D74000-memory.dmp

        memory/6744-2296-0x0000000007360000-0x000000000736A000-memory.dmp

        memory/6744-2255-0x00000000071F0000-0x0000000007293000-memory.dmp

        memory/6744-2298-0x0000000007500000-0x0000000007511000-memory.dmp

        memory/6744-2299-0x0000000007530000-0x000000000753E000-memory.dmp

        memory/6744-2300-0x0000000007540000-0x0000000007554000-memory.dmp

        memory/6744-2233-0x0000000006600000-0x000000000661E000-memory.dmp

        memory/6744-2302-0x0000000007580000-0x0000000007588000-memory.dmp

        memory/6744-2049-0x0000000005040000-0x0000000005062000-memory.dmp

        memory/6744-2048-0x0000000005120000-0x0000000005748000-memory.dmp