Analysis

  • max time kernel
    345s
  • max time network
    348s
  • platform
    windows11-21h2_x64
  • resource
    win11-20260130-en
  • resource tags

    arch:x64arch:x86image:win11-20260130-enlocale:en-usos:windows11-21h2-x64systemwindows
  • submitted
    03/05/2026, 19:32

General

  • Target
    32-Bit/Blake3.dll
  • Size 88KB
  • Sample260503-x89jcsf191
  • SHA256 3e8381cba2db07ae9a7d298e9a9e56473fda9060ae531cca3352cd7e7d779506
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
3/10

Malware Config

Signatures

  • Program crash 2 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\32-Bit\Blake3.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1908
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\32-Bit\Blake3.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4584
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4584 -s 408
        3⤵
        • Program crash
        PID:748
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4584 -s 424
        3⤵
        • Program crash
        PID:4984
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 4584 -ip 4584
    1⤵
      PID:2184
    • C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -pss -s 524 -p 4584 -ip 4584
      1⤵
        PID:1160

      Network

            MITRE ATT&CK Enterprise v16

            Replay Monitor

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            Downloads

            memory/4584-1-0x0000000074FD0000-0x0000000074FEF000-memory.dmp

            memory/4584-0-0x00000000375D0000-0x00000000375E0000-memory.dmp

            memory/4584-2-0x0000000074FD0000-0x0000000074FEF000-memory.dmp