{
  "family": "speedbit",
  "sample_count": 7,
  "category": "advanced_threat",
  "description": "PUA:Win32/Speedbit (also known as **SpeedBit Video Accelerator** or **Download Accelerator Plus**) represents a category of Potentially Unwanted Programs (PUAs) marketed as tools to dramatically increase video buffering speeds and file download rates. While early versions of these tools may have provided some marginal network optimization, modern iterations are highly deceptive, bundling aggressive adware, browser hijackers, and utilizing deceptive UI practices to monetize the user's endpoint without clear consent.<br><br><b>Understanding Speedbit PUAs</b><br>To an end-user, downloading a video accelerator seems like a logical solution to slow internet. However, the installation process is a minefield. For a security analyst, a Speedbit detection is a red flag indicating a user is bypassing corporate acceptable use policies and installing unvetted freeware that frequently compromises the endpoint's browser integrity and exposes the network to malvertising.<br><br><b>Execution and Bundling Mechanics</b><br>These tools are distributed heavily via SEO poisoning and malvertising (`T1189`). During execution (`T1204.002`), the installer employs 'Dark Patterns'—hiding the adware installation behind 'Express Install' buttons. It silently installs rogue browser extensions (`T1176`), alters the default search engine, and establishes persistence via Registry Run keys (`T1547.001`). Crucially, to 'accelerate' traffic, Speedbit often installs a local proxy service or alters network adapter settings (`T1562.004`) to route all HTTP traffic through its own engine, breaking secure connections and allowing it to inject its own advertisements directly into the DOM of websites the user visits (`T1185`).<br><br><b>Indicators of Compromise & Impact</b><br>The primary impact is a degraded user experience, browser hijacking, and potential interception of unencrypted web traffic. IoCs include EDR alerts for the installation of known adware families bundled with the accelerator. Host-based indicators include unauthorized modifications to browser registry keys (e.g., `HKLM\\SOFTWARE\\Policies\\Google\\Chrome`) and the presence of a local proxy listening on `127.0.0.1`. Network logs will show anomalous search traffic routed to unknown tracking domains.",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [],
  "enrichment_level": "expert-seo",
  "faq": [],
  "faq_count": 0,
  "mitre_attack": [
    "T1562.004",
    "T1185",
    "T1189",
    "T1176"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-06-09",
  "mitre_attack_detail": [
    {
      "id": "T1189",
      "name": "Drive-by Compromise (Bundled Installers)",
      "tactic": "Initial Access"
    },
    {
      "id": "T1562.004",
      "name": "Impair Defenses: Disable or Modify System Firewall (Rerouting traffic through local proxy)",
      "tactic": "Defense Evasion"
    },
    {
      "id": "T1176",
      "name": "Browser Extensions (Bundled adware)",
      "tactic": "Persistence"
    },
    {
      "id": "T1185",
      "name": "Browser Session Hijacking (Search redirection and ad injection)",
      "tactic": "Collection"
    }
  ],
  "containment_steps": [
    "Use the Windows Control Panel to uninstall the Speedbit application and any bundled software (like 'Search Protect') installed on the same date.",
    "Deploy an enterprise PUA/Adware removal tool (like AdwCleaner) to locate and strip the secondary payload registry hooks and rogue browser extensions.",
    "Verify the endpoint's proxy settings (`inetcpl.cpl`) have been restored to default, ensuring traffic is no longer routing through a local loopback address.",
    "Force a complete reset of all installed web browsers to factory defaults."
  ],
  "what_to_avoid": [
    "Do not assume the endpoint is clean just because the main application was uninstalled; the bundled adware often persists independently.",
    "Avoid ignoring the proxy configuration; if left active after the software is uninstalled, the user may completely lose internet access."
  ],
  "target_industries": [
    "Global / Opportunistic"
  ],
  "motivation": "Opportunistic",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ]
}