Analysis

  • max time kernel
    148s
  • max time network
    154s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260617-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260617-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    27/06/2026, 12:14

General

  • Target
    FileZillaPortable/App/filezilla/FzGSS.dll
  • Size 32KB
  • Sample260627-pepcbsbs6p
  • SHA256 2ada0bc262739741f496383cea7faf3e0f1e25d3f4a7eea68267132ae7849fa7
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
5/10

Malware Config

Signatures

  • UPX packed file 1 IoCs

    Detects executables packed with UPX/modified UPX open source packer.

  • 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\FileZillaPortable\App\filezilla\FzGSS.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:2688
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\FileZillaPortable\App\filezilla\FzGSS.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:4292
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 4292 -s 500
        3⤵
        • Program crash
        PID:3292
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 436 -p 4292 -ip 4292
    1⤵
      PID:1032

    Network

          MITRE ATT&CK Enterprise v16

          Replay Monitor

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          Downloads

          memory/4292-0-0x0000000010000000-0x0000000010017000-memory.dmp