{
  "family": "sennaonemaker",
  "sample_count": 1,
  "category": "ransomware",
  "description": "<h3>Executive Summary</h3>\nSennaOneMaker is a prolific adware family and Potentially Unwanted Program (PUP) notorious for bombarding infected systems with intrusive pop-up advertisements, banners, and in-text links. It operates primarily as a monetization vehicle for its developers, aggressively altering system states to maximize ad delivery.\n\n<h3>Infection and Execution Flow</h3>\nSennaOneMaker relies on social engineering and software bundling for distribution. Users typically infect their systems inadvertently when downloading software from third-party aggregators or torrent sites. \n\nUpon installation, SennaOneMaker executes silently, dropping executable files into the `%AppData%` and `%ProgramFiles%` directories. It immediately hooks into active browser processes and alters DNS configurations or proxy settings in some variants to route traffic through servers controlled by the attackers. This allows the adware to inject advertisements directly into the HTML of non-encrypted (HTTP) websites and manipulate search results. The constant network activity and background processing required to fetch and render these ads severely impact system performance.\n\n<h3>Privacy and Threat Implications</h3>\nSennaOneMaker acts as a persistent surveillance tool, gathering vast amounts of user data, including browsing habits, search queries, and geographical locations. This telemetry is transmitted to remote servers and sold. The sheer volume of injected ads also creates a high probability of \"malvertising\" exposure, where users may be tricked into downloading ransomware or credential stealers.\n\n<h3>Defense and Remediation</h3>\n<ul>\n<li><strong>Web Filtering:</strong> Implement DNS-level filtering or Secure Web Gateways (SWG) to block access to known adware distribution networks and C2 servers.</li>\n<li><strong>Registry Cleanup:</strong> SennaOneMaker leaves extensive registry footprints. Manual or automated cleanup of `HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Run` and browser policy keys is essential for complete removal.</li>\n<li><strong>Continuous Monitoring:</strong> Monitor network traffic for anomalous outbound connections indicative of adware phoning home to ad networks.</li>\n</ul>",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [
    "Adware.SennaOneMaker",
    "PUP.SennaOneMaker",
    "Win32/SennaOneMaker"
  ],
  "enrichment_level": "insufficient_information",
  "faq": [],
  "faq_count": 0,
  "mitre_attack": [
    "T1566.002",
    "T1112",
    "T1562"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-07-01T16:00:59Z",
  "type": "Adware",
  "target_industries": [
    "Global / Opportunistic"
  ],
  "motivation": "Opportunistic",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ]
}