Analysis

  • max time kernel
    149s
  • max time network
    151s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    17/08/2026, 05:10

General

  • Target
    Core.dll
  • Size 862KB
  • Sample260817-ft5hestdkd
  • SHA256 3b40d397eaba90871de7895c4e14a9a30e6cbdd74f03b65c5c8778791a058e69
  • 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\Core.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:1568
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\Core.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:2256
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 2256 -s 640
        3⤵
        • Program crash
        PID:4392
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2256 -ip 2256
    1⤵
      PID:2748

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          memory/2256-0-0x0000000074AC0000-0x0000000074CDB000-memory.dmp

          memory/2256-1-0x0000000074970000-0x000000007498C000-memory.dmp

          memory/2256-2-0x0000000074AC0000-0x0000000074CDB000-memory.dmp