Overview

overview

8

Static

static

7

FileZillaP...la.chm

windows10-2004-x64

1

FileZillaP...la.chm

windows11-ltsc_2024-x64

8

FileZillaP...la.exe

windows10-2004-x64

5

FileZillaP...la.exe

windows11-ltsc_2024-x64

5

FileZillaP...SS.dll

windows10-2004-x64

5

FileZillaP...SS.dll

windows11-ltsc_2024-x64

5

FileZillaP...Br.dll

windows10-2004-x64

5

FileZillaP...Br.dll

windows11-ltsc_2024-x64

5

FileZillaP...Bu.dll

windows10-2004-x64

5

FileZillaP...Bu.dll

windows11-ltsc_2024-x64

5

FileZillaP...Ca.dll

windows10-2004-x64

5

FileZillaP...Ca.dll

windows11-ltsc_2024-x64

5

FileZillaP...Ch.dll

windows10-2004-x64

5

FileZillaP...Ch.dll

windows11-ltsc_2024-x64

5

FileZillaP...hs.dll

windows10-2004-x64

5

FileZillaP...hs.dll

windows11-ltsc_2024-x64

5

FileZillaP...ze.dll

windows10-2004-x64

5

FileZillaP...ze.dll

windows11-ltsc_2024-x64

5

FileZillaP...De.dll

windows10-2004-x64

5

FileZillaP...De.dll

windows11-ltsc_2024-x64

5

FileZillaP...Es.dll

windows10-2004-x64

5

FileZillaP...Es.dll

windows11-ltsc_2024-x64

8

FileZillaP...Fr.dll

windows10-2004-x64

5

FileZillaP...Fr.dll

windows11-ltsc_2024-x64

8

FileZillaP...Hu.dll

windows10-2004-x64

5

FileZillaP...Hu.dll

windows11-ltsc_2024-x64

5

FileZillaP...It.dll

windows10-2004-x64

5

FileZillaP...It.dll

windows11-ltsc_2024-x64

5

FileZillaP...Jp.dll

windows10-2004-x64

5

FileZillaP...Jp.dll

windows11-ltsc_2024-x64

5

FileZillaP...Kr.dll

windows10-2004-x64

5

FileZillaP...Kr.dll

windows11-ltsc_2024-x64

5

Analysis

  • max time kernel
    116s
  • max time network
    152s
  • 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

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General

  • Target
    FileZillaPortable/App/filezilla/FzResEs.dll
  • Size 31KB
  • Sample260627-pepcbsbs6p
  • SHA256 b763ab34bc0bd1b5251cc03b34fa6cc1cc21161379c0f2e9826a857eafb51b57
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
adwarediscoverypersistenceransomwarespywareupx

Malware Config

Signatures

  • Boot or Logon Autostart Execution: Active Setup 2 TTPs 1 IoCs

    Adversaries may achieve persistence by adding a Registry key to the Active Setup of the local machine.

    persistence
  • Enumerates connected drives 3 TTPs 2 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • UPX packed file 1 IoCs

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

    upx
  • 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.

    discovery
  • Checks SCSI registry key(s) 3 TTPs 62 IoCs

    SCSI information is often read in order to detect sandboxing environments.

  • Modifies Internet Explorer settings 1 TTPs 1 IoCs
    adwarespyware
  • Modifies registry class 38 IoCs
  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 64 IoCs
  • Suspicious use of FindShellTrayWindow 53 IoCs
  • Suspicious use of SendNotifyMessage 40 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs
  • Uses Task Scheduler COM API 1 TTPs

    The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.

    persistence
  • Uses Volume Shadow Copy WMI provider

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware
  • Uses Volume Shadow Copy service COM API

    The Volume Shadow Copy service is used to manage backups/snapshots.

    ransomware

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\FileZillaPortable\App\filezilla\FzResEs.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:6088
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\FileZillaPortable\App\filezilla\FzResEs.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:3432
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:1672
    • C:\Windows\explorer.exe
      explorer.exe /LOADSAVEDWINDOWS
      2⤵
      • Boot or Logon Autostart Execution: Active Setup
      • Enumerates connected drives
      • Checks SCSI registry key(s)
      • Modifies Internet Explorer settings
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:3080
  • C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe
    "C:\Windows\SystemApps\MicrosoftWindows.Client.CBS_cw5n1h2txyewy\SearchHost.exe" -ServerName:CortanaUI.AppXstmwaab17q5s3y22tp6apqz7a45vwv65.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:1132
  • C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe
    "C:\Windows\SystemApps\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\StartMenuExperienceHost.exe" -ServerName:App.AppXywbrabmsek0gm3tkwpr5kwzbs55tkqay.mca
    1⤵
    • Modifies registry class
    • Suspicious use of SetWindowsHookEx
    PID:2284

Network

        MITRE ATT&CK Enterprise v16

        Replay Monitor

        Loading Replay Monitor...

        Downloads

        prep_Activatable Class_Hermes_perf.cache
        • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
        • Size 599B
        • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        prep_Activatable Class_Hermes_perf.cache
        • Path C:\Users\Admin\AppData\Local\Packages\Microsoft.Windows.StartMenuExperienceHost_cw5n1h2txyewy\TempState\prep_Activatable Class_Hermes_perf.cache
        • Size 591B
        • SHA256 dc216c11d6381abdcb6a4b927fd9ea68d336ff63c88639e4a242acf037f90c68
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        memory/1132-62-0x000001C414690000-0x000001C4146B0000-memory.dmp
        Download

        memory/1132-30-0x000001C413E80000-0x000001C413F80000-memory.dmp
        Download

        memory/1132-43-0x000001C403C80000-0x000001C403CA0000-memory.dmp
        Download

        memory/1132-29-0x000001C403A20000-0x000001C403A40000-memory.dmp
        Download

        memory/1132-16-0x000001C4001E0000-0x000001C4002E0000-memory.dmp
        Download

        memory/2284-195-0x000001F48CC20000-0x000001F48CEDC000-memory.dmp
        Download

        memory/2284-204-0x000001F48CC20000-0x000001F48CEDC000-memory.dmp
        Download

        memory/3432-0-0x0000000010000000-0x0000000010020000-memory.dmp
        Download