Overview

overview

8

Static

static

3

AACGUARD-v...02.exe

windows10-2004-x64

7

AACGUARD-v...02.exe

windows11-ltsc_2024-x64

7

$PLUGINSDI...ns.dll

windows10-2004-x64

3

$PLUGINSDI...ns.dll

windows11-ltsc_2024-x64

8

$PLUGINSDI...LL.dll

windows10-2004-x64

3

$PLUGINSDI...LL.dll

windows11-ltsc_2024-x64

8

$PLUGINSDI...em.dll

windows10-2004-x64

3

$PLUGINSDI...em.dll

windows11-ltsc_2024-x64

3

$RESOURCES...AC.exe

windows10-2004-x64

7

$RESOURCES...AC.exe

windows11-ltsc_2024-x64

3

$RESOURCES...r3.dll

windows10-2004-x64

1

$RESOURCES...r3.dll

windows10-2004-x64

1

$RESOURCES...r3.dll

windows11-ltsc_2024-x64

6

$RESOURCES...r3.dll

windows10-2004-x64

1

$RESOURCES...r3.dll

windows11-ltsc_2024-x64

1

$RESOURCES...op.dll

windows10-2004-x64

1

$RESOURCES...op.dll

windows11-ltsc_2024-x64

8

$RESOURCES...r3.dll

windows10-2004-x64

1

$RESOURCES...r3.dll

windows11-ltsc_2024-x64

6

$RESOURCES...r3.dll

windows10-2004-x64

1

$RESOURCES...r3.dll

windows11-ltsc_2024-x64

6

Analysis

  • max time kernel
    599s
  • max time network
    553s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260911-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260911-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    18/10/2026, 16:49

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General

  • Target
    $PLUGINSDIR/InstallOptions.dll
  • Size 15KB
  • Sample261018-vbpftassbx
  • SHA256 89dd7d646278d8bfc41d5446bdc348b9a9afaa832abf02c1396272bb7ac7262a
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
adwarediscoverypersistenceransomwarespyware

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.

  • 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.

    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 44 IoCs
  • Suspicious use of FindShellTrayWindow 54 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\$PLUGINSDIR\InstallOptions.dll,#1
    1⤵
    • Suspicious use of WriteProcessMemory
    PID:5072
    • C:\Windows\SysWOW64\rundll32.exe
      rundll32.exe C:\Users\Admin\AppData\Local\Temp\$PLUGINSDIR\InstallOptions.dll,#1
      2⤵
      • System Location Discovery: System Language Discovery
      PID:5892
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 5892 -s 604
        3⤵
        • Program crash
        PID:464
  • C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 5892 -ip 5892
    1⤵
      PID:4368
    • C:\Windows\system32\sihost.exe
      sihost.exe
      1⤵
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of WriteProcessMemory
      PID:4368
      • 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:1148
    • 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:2804
    • 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:2260
    • C:\Windows\system32\svchost.exe
      C:\Windows\system32\svchost.exe -k GPSvcGroup
      1⤵
        PID:4920
      • C:\Windows\System32\SecurityHealthHost.exe
        \\?\C:\Windows\System32\SecurityHealthHost.exe {08728914-3F57-4D52-9E31-49DAECA5A80A} -Embedding
        1⤵
          PID:2192

        Network

              MITRE ATT&CK Enterprise v16

              Replay Monitor

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              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 595B
              • SHA256 d4e60617c2afab8263febabe7f14f18595715078d71307a8cefe0707dae76dee
              • 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 607B
              • SHA256 be6b74e52e5eef1f1c27c0976bf3bf1bfa99958c00bbef2898a602f691be6dae
              • MD5 SHA1 SHA512 TLSH
              Submit Download

              memory/2260-190-0x0000025A9A790000-0x0000025A9AA4C000-memory.dmp
              Download

              memory/2260-199-0x0000025A9A790000-0x0000025A9AA4C000-memory.dmp
              Download

              memory/2804-20-0x000002D9801E0000-0x000002D9802E0000-memory.dmp
              Download

              memory/2804-22-0x000002D9801E0000-0x000002D9802E0000-memory.dmp
              Download

              memory/2804-35-0x000002D982ED0000-0x000002D982FD0000-memory.dmp
              Download

              memory/2804-66-0x000002D994240000-0x000002D994260000-memory.dmp
              Download

              memory/2804-44-0x000002D982DC0000-0x000002D982DE0000-memory.dmp
              Download

              memory/2804-34-0x000002D982A20000-0x000002D982A40000-memory.dmp
              Download

              memory/2804-21-0x000002D9801E0000-0x000002D9802E0000-memory.dmp
              Download