Analysis

  • max time kernel
    149s
  • max time network
    153s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20260513-en
  • resource tags

    arch:x64arch:x86image:win10v2004-20260513-enlocale:en-usos:windows10-2004-x64systemwindows
  • submitted
    04/08/2026, 21:30

General

  • Target
    MultiMC/Qt5Core.dll
  • Size 5.1MB
  • Sample260804-1chbsa1bpf
  • SHA256 79b83c43af99a9cb72a744ae2262c090227907907e8f2deb937cd4e1f0965e4d
  • 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\MultiMC\Qt5Core.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:4920
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\MultiMC\Qt5Core.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3432
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 3432 -s 676
        3⤵
        • Program crash
        PID:3428
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 184 -p 3432 -ip 3432
    1⤵
      PID:3884

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          memory/3432-0-0x0000000068D96000-0x0000000068D97000-memory.dmp

          memory/3432-1-0x0000000068880000-0x0000000068DAF000-memory.dmp

          memory/3432-4-0x000000006FC40000-0x000000006FD41000-memory.dmp

          memory/3432-3-0x0000000064940000-0x0000000064954000-memory.dmp

          memory/3432-2-0x000000006E940000-0x000000006E964000-memory.dmp