Analysis

  • max time kernel
    149s
  • max time network
    94s
  • platform
    windows11-21h2_x64
  • resource
    win11-20251218-en
  • resource tags

    arch:x64arch:x86image:win11-20251218-enlocale:en-usos:windows11-21h2-x64system
  • submitted
    23/12/2025, 11:54

General

  • Target
    msedge_elf.dll
  • Size 1.7MB
  • Sample251223-n3deaswpdx
  • SHA256 cdecb17866aa95ae171740ba4fc9b73b0f7a75ee817119fbe423b074c2c3e8a6
  • MD5 SHA1 SHA512 SSDEEP
Score
5/10

Malware Config

Signatures

  • Suspicious use of SetThreadContext 1 IoCs
  • Program crash 1 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\msedge_elf.dll,#1
    1⤵
    • Suspicious use of SetThreadContext
    • Suspicious use of WriteProcessMemory
    PID:4976
    • C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe
      "C:\Windows\Microsoft.NET\Framework\v4.0.30319\ngen.exe"
      2⤵
        PID:2340
        • C:\Windows\SysWOW64\WerFault.exe
          C:\Windows\SysWOW64\WerFault.exe -u -p 2340 -s 16
          3⤵
          • Program crash
          PID:5772
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2340 -ip 2340
      1⤵
        PID:3304

      Network

            MITRE ATT&CK Matrix

            Replay Monitor

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            Downloads

            memory/2340-0-0x0000000000420000-0x0000000000465000-memory.dmp