Analysis

  • max time kernel
    300s
  • max time network
    326s
  • platform
    windows10-ltsc_2021_x64
  • resource
    win10ltsc2021-20260911-es
  • resource tags

    arch:x64arch:x86image:win10ltsc2021-20260911-eslocale:es-esos:windows10-ltsc_2021-x64systemwindows
  • submitted
    23/10/2026, 23:46

General

  • Target
    Oneshot/libpcre-1.dll
  • Size 700KB
  • Sample261023-3sr72adh38
  • SHA256 44135d68b7321ef04ac3f901d7c8b8496bf2aff2041b3d4c213e26f231da7c86
  • 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\Oneshot\libpcre-1.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:896
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\Oneshot\libpcre-1.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4272
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4272 -s 604
        3⤵
        • Program crash
        PID:4788
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4272 -ip 4272
    1⤵
      PID:4756

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          memory/4272-0-0x0000000069340000-0x00000000693F0000-memory.dmp