Overview

overview

6

Static

static

1

SteamBoosterSetup.exe

windows10-2004-x64

6

SteamBoosterSetup.exe

windows11-ltsc_2024-x64

6

Analysis

  • max time kernel
    149s
  • 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, 16:51

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General

  • Target
    SteamBoosterSetup.exe
  • Size 3.9MB
  • Sample260627-vc3d3aby6x
  • SHA256 09c4f8262c74179f6f9bf776866f8bc1873ed8ce6b5e258c03d30ea344ad7678
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
6/10
adwarediscoverypersistenceransomwarespyware

Malware Config

Signatures

  • Adds Run key to start application 2 TTPs 1 IoCs
    persistence
  • 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.

  • Checks installed software on the system 1 TTPs

    Looks up Uninstall key entries in the registry to enumerate software on the system.

    discovery
  • Executes dropped EXE 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s).

  • 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 44 IoCs
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 32 IoCs
  • Suspicious use of FindShellTrayWindow 60 IoCs
  • Suspicious use of SendNotifyMessage 46 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:\Users\Admin\AppData\Local\Temp\SteamBoosterSetup.exe
    "C:\Users\Admin\AppData\Local\Temp\SteamBoosterSetup.exe"
    1⤵
    • Adds Run key to start application
    • Suspicious use of WriteProcessMemory
    PID:4684
    • C:\Users\Admin\AppData\Local\steambooster\steambooster.exe
      "C:\Users\Admin\AppData\Local\Temp\SteamBoosterSetup.exe" --parent-pid=4684 --bootstrap-handoff
      2⤵
      • Executes dropped EXE
      • Modifies registry class
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      PID:6092
  • \??\c:\users\admin\appdata\local\steambooster\steambooster.exe
    "c:\users\admin\appdata\local\steambooster\steambooster.exe" --autostart
    1⤵
    • Executes dropped EXE
    PID:5812
  • C:\Windows\system32\sihost.exe
    sihost.exe
    1⤵
    • Suspicious use of FindShellTrayWindow
    • Suspicious use of WriteProcessMemory
    PID:2376
    • 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 use of AdjustPrivilegeToken
      • Suspicious use of FindShellTrayWindow
      • Suspicious use of SendNotifyMessage
      • Suspicious use of SetWindowsHookEx
      PID:4136
  • 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:4680
  • 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:1212

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

        steambooster_2026-06-27.log
        • Path C:\Users\Admin\AppData\Local\steambooster\logs\steambooster_2026-06-27.log
        • Size 1KB
        • SHA256 5014fff1a1bb51340b5d5f9f446b92cbb1d33e0c65fc048e7437542cda64b6d4
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        steambooster.exe
        • Path C:\Users\Admin\AppData\Local\steambooster\steambooster.exe
        • Size 3.9MB
        • SHA256 09c4f8262c74179f6f9bf776866f8bc1873ed8ce6b5e258c03d30ea344ad7678
        • MD5 SHA1 SHA512 SSDEEP TLSH
        Submit Download

        SteamBooster by SteamBalance.lnk
        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\SteamBooster by SteamBalance\SteamBooster by SteamBalance.lnk
        • Size 2KB
        • SHA256 acacb4e9e4428961170a458ac62efc296072a8e078bf5ddf83db9aad3c0a640b
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        Удалить SteamBooster by SteamBalance.lnk
        • Path C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\SteamBooster by SteamBalance\Удалить SteamBooster by SteamBalance.lnk
        • Size 2KB
        • SHA256 7ccc29027e46285a93e017d5c4261b54db47d3493294d9f104280425ade1012e
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        SteamBooster.lnk
        • Path C:\Users\Admin\Desktop\SteamBooster.lnk
        • Size 2KB
        • SHA256 221b01f0f7b47d16821dd07421c351c4c0e025f1ce81156d8ae733d8779be455
        • MD5 SHA1 SHA512 TLSH
        Submit Download

        memory/4136-206-0x000000000EF10000-0x000000000EF8C000-memory.dmp
        Download

        memory/4680-41-0x00000176801E0000-0x00000176802E0000-memory.dmp
        Download

        memory/4680-65-0x0000017684210000-0x0000017684230000-memory.dmp
        Download

        memory/4680-87-0x0000017694790000-0x00000176947B0000-memory.dmp
        Download

        memory/4680-54-0x0000017681FB0000-0x0000017681FD0000-memory.dmp
        Download

        memory/4680-55-0x0000017694410000-0x0000017694510000-memory.dmp
        Download