Overview

overview

8

Static

static

3

silly.exe

windows10-2004-x64

5

silly.exe

windows11-ltsc_2024-x64

8

Analysis

  • max time kernel
    148s
  • max time network
    150s
  • platform
    windows11-ltsc_2024_x64
  • resource
    win11ltsc2024-20260706-en
  • resource tags

    arch:x64arch:x86image:win11ltsc2024-20260706-enlocale:en-usos:windows11-ltsc_2024-x64systemwindows
  • submitted
    09/07/2026, 01:34

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General

  • Target
    silly.exe
  • Size 2.8MB
  • Sample260709-by4dpscs9y
  • SHA256 7fe62ae0f80021a3f1b1aa2195bec50256467a8f54c1d09c51027dcc0d3ba82d
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
8/10
adwarepersistenceransomwarespyware

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.

  • Sets desktop wallpaper using registry 2 TTPs 1 IoCs
    ransomware
  • 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 28 IoCs
  • Suspicious use of FindShellTrayWindow 52 IoCs
  • Suspicious use of SendNotifyMessage 44 IoCs
  • Suspicious use of SetWindowsHookEx 3 IoCs
  • Suspicious use of WriteProcessMemory 4 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:\Users\Admin\AppData\Local\Temp\silly.exe
    "C:\Users\Admin\AppData\Local\Temp\silly.exe"
    1⤵
    • Sets desktop wallpaper using registry
    • Suspicious use of WriteProcessMemory
    PID:3556
    • C:\Windows\system32\cmd.exe
      C:\Windows\system32\cmd.exe /c curl -s -L "https://pbs.twimg.com/media/HLlMMMWW4AACOfN?format=jpg&name=900x900" -o "C:\Users\Admin\AppData\Local\Temp\wallpaper.jpg"
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:5412
      • C:\Windows\system32\curl.exe
        curl -s -L "https://pbs.twimg.com/media/HLlMMMWW4AACOfN?format=jpg&name=900x900" -o "C:\Users\Admin\AppData\Local\Temp\wallpaper.jpg"
        3⤵
          PID:2896
      • C:\Windows\system32\cmd.exe
        C:\Windows\system32\cmd.exe /c pause
        2⤵
          PID:4648
      • C:\Windows\system32\svchost.exe
        C:\Windows\system32\svchost.exe -k GPSvcGroup
        1⤵
          PID:2988
        • C:\Windows\system32\sihost.exe
          sihost.exe
          1⤵
          • Suspicious use of FindShellTrayWindow
          • Suspicious use of WriteProcessMemory
          PID:6104
          • 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:2752
        • 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:3896
        • 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:1208

        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 599B
              • SHA256 b536a3dae9ea5c69081f0491eed829e3b57e32401fdf49a63031bcd6b20e6fdb
              • MD5 SHA1 SHA512 TLSH
              Submit Download

              memory/3556-1-0x00007FF6ECA20000-0x00007FF6ECB6E000-memory.dmp
              Download

              memory/3896-6-0x0000019E801E0000-0x0000019E802E0000-memory.dmp
              Download

              memory/3896-5-0x0000019E801E0000-0x0000019E802E0000-memory.dmp
              Download

              memory/3896-31-0x0000019E83D10000-0x0000019E83D30000-memory.dmp
              Download

              memory/3896-16-0x0000019E83EF0000-0x0000019E83FF0000-memory.dmp
              Download

              memory/3896-50-0x0000019E84290000-0x0000019E842B0000-memory.dmp
              Download

              memory/3896-15-0x0000019E83AD0000-0x0000019E83AF0000-memory.dmp
              Download