Analysis

  • max time kernel
    149s
  • max time network
    150s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    08/06/2026, 13:54

General

  • Target
    x86/mfH265Enc.dll
  • Size 970KB
  • Sample260608-q7yl5sfs21
  • SHA256 daa3a39274b37b0bfea0b3c5857b558d8428c1a2c76f5e209b98c51152e41d7a
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
3/10

Malware Config

Signatures

  • Program crash 1 IoCs
  • System Location Discovery: System Language Discovery 1 TTPs 1 IoCs

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

  • Suspicious use of WriteProcessMemory 1 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\x86\mfH265Enc.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2264
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\x86\mfH265Enc.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4268
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4268 -s 600
        3⤵
        • Program crash
        PID:1664
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4268 -ip 4268
    1⤵
      PID:3728

    Network

          MITRE ATT&CK Enterprise v16

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          Downloads