{
  "family": "speedchecker",
  "sample_count": 9,
  "category": "advanced_threat",
  "description": "PUA:Win32/Speedchecker is a Potentially Unwanted Program (PUA) and adware family that masquerades as a 'PC Optimization' or 'Internet Speed Test' utility. Much like rogue antivirus software, Speedchecker utilizes deceptive marketing and alarming, fabricated scan results to convince users that their computer is running slowly due to 'critical errors', ultimately coercing them into purchasing a premium subscription to fix issues that do not actually exist.<br><br><b>Understanding Speedchecker Scareware</b><br>To an end-user, Speedchecker is a source of anxiety. They download it to check their internet speed, and suddenly they are bombarded with flashing warnings claiming their registry is corrupted or their hard drive is fragmented. For a security analyst, Speedchecker is a manipulative fraud. The software provides no actual optimization; its sole purpose is aggressive upselling and the silent installation of bundled adware trackers.<br><br><b>Execution and Deception Mechanics</b><br>Speedchecker is heavily distributed via aggressive affiliate marketing, malvertising (fake 'Your PC is Slow' banners), and deceptive software bundlers (`T1189`). When installed (`T1204.002`), it immediately runs a fake 'system scan'. This scan is hardcoded to always find severe issues, regardless of the actual health of the machine (`T1566.002`). It establishes persistence via Registry Run keys and Scheduled Tasks (`T1053.005`) to ensure its alarming pop-ups appear every time the computer boots. It frequently installs browser extensions (`T1176`) to hijack searches and inject advertisements, generating secondary revenue for the developers.<br><br><b>Indicators of Compromise & Impact</b><br>The primary impact is financial loss for the user and a severely degraded user experience due to constant, intrusive pop-ups, browser hijacking, and system sluggishness caused by the adware trackers. Incident responders will observe the unexpected installation of the Speedchecker GUI. EDR logs will show the creation of multiple persistent startup entries and the silent installation of browser Helper Objects (BHOs).",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [],
  "enrichment_level": "expert-seo",
  "faq": [],
  "faq_count": 0,
  "mitre_attack": [
    "T1189",
    "T1176",
    "T1566.002",
    "T1053.005"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-06-09",
  "mitre_attack_detail": [
    {
      "id": "T1189",
      "name": "Drive-by Compromise (Bundled Installers and Malvertising)",
      "tactic": "Initial Access"
    },
    {
      "id": "T1566.002",
      "name": "Phishing: Spearphishing Link (Deceptive Pop-ups and Fake Scans)",
      "tactic": "Credential Access"
    },
    {
      "id": "T1053.005",
      "name": "Scheduled Task/Job: Scheduled Task",
      "tactic": "Persistence"
    },
    {
      "id": "T1176",
      "name": "Browser Extensions (Adware bundling)",
      "tactic": "Persistence"
    }
  ],
  "containment_steps": [
    "Use the Windows Control Panel to thoroughly uninstall the Speedchecker utility and any associated 'toolbars' installed on the exact same date.",
    "Deploy an enterprise adware removal tool (e.g., Malwarebytes or AdwCleaner) to locate and strip the deeply embedded Scheduled Tasks and browser hooks.",
    "Force a complete reset of all installed web browsers to factory defaults to eradicate the rogue extensions and restore the homepage.",
    "If the user entered credit card information into the software's portal, advise them to contact their bank to dispute the fraudulent charge."
  ],
  "what_to_avoid": [
    "Do not rely solely on the software's provided uninstaller; scareware frequently leaves behind watchdog services to generate pop-ups later.",
    "Avoid paying the requested fee; it funds fraudulent operations and does not actually optimize the computer."
  ],
  "target_industries": [
    "Global / Opportunistic"
  ],
  "motivation": "Opportunistic",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ]
}