{
  "family": "webwatcher",
  "sample_count": 16,
  "category": "spyware",
  "description": "WebWatcher (classified across antimalware engines as Spyware:Win32/WebWatcher, MonitoringTool:Win32/WebWatcher, and PUA:Win32/WebWatcher) is a stealth surveillance spyware and monitoring utility frequently abused by malicious actors for clandestine monitoring, credential harvesting, and insider espionage on Windows endpoints. While commercially marketed as employee and parental monitoring software, threat actors deploy WebWatcher via trojanized installers, administrative credential abuse, or during unauthorized remote access sessions. WebWatcher installs deep hooks into the Windows operating system and runs completely hidden from the desktop, system tray, and Task Manager. It records all keystrokes (including login credentials and confidential correspondence), captures automated desktop screenshots triggered by keyword alerts or application launches, tracks web browsing history, monitors social media and webmail activity, and intercepts clipboard data. All recorded telemetry is encrypted and exfiltrated over HTTPS to a remote cloud management portal.",
  "cta": "Published by the SystemHelpdesk Threat Intelligence Team.",
  "aliases": [
    "Spyware:Win32/WebWatcher",
    "MonitoringTool:Win32/WebWatcher",
    "PUA:Win32/WebWatcher",
    "WebWatcher Spyware",
    "Win32/WebWatcher"
  ],
  "enrichment_level": "curated_sourced",
  "faq": [
    {
      "@type": "Question",
      "name": "What is Spyware:Win32/WebWatcher?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "WebWatcher is a stealth surveillance spyware program that records keystrokes, screenshots, and browsing activity without user consent."
      }
    },
    {
      "@type": "Question",
      "name": "How does WebWatcher hide itself from Windows users?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "It operates in invisible stealth mode, concealing its files, processes, system tray icons, and uninstaller entries."
      }
    },
    {
      "@type": "Question",
      "name": "What data does WebWatcher capture?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "It records all typed keystrokes, takes periodic desktop screenshots, logs visited websites, emails, and instant messages."
      }
    },
    {
      "@type": "Question",
      "name": "How is recorded surveillance data exfiltrated?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "It encrypts collected logs and continuously uploads them over outbound HTTPS connections to a remote cloud management portal."
      }
    },
    {
      "@type": "Question",
      "name": "How do you detect and remove WebWatcher?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Use updated endpoint detection and response (EDR) or antimalware tools to identify hidden drivers, hooks, and exfiltration network traffic."
      }
    }
  ],
  "faq_count": 5,
  "mitre_attack": [
    "T1056.001",
    "T1113",
    "T1115",
    "T1082",
    "T1547.001",
    "T1041"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-10-15",
  "mitre_attack_detail": [
    {
      "id": "T1056.001",
      "name": "Input Capture: Keylogging",
      "tactic": "Credential Access"
    },
    {
      "id": "T1113",
      "name": "Screen Capture",
      "tactic": "Collection"
    },
    {
      "id": "T1041",
      "name": "Exfiltration Over C2 Channel",
      "tactic": "Exfiltration"
    },
    {
      "id": "T1562.001",
      "name": "Impair Defenses: Disable or Modify Tools",
      "tactic": "Defense Evasion"
    },
    {
      "id": "T1543.003",
      "name": "Create or Modify System Process: Windows Service",
      "tactic": "Persistence"
    }
  ],
  "containment_steps": [
    "Verify with HR and Legal departments if the software is an authorized component of an employee monitoring program before taking destructive action.",
    "If unauthorized, isolate the endpoint to halt the active exfiltration of keystrokes, screenshots, and sensitive communications.",
    "Use the official vendor uninstaller (if accessible) or a specialized anti-spyware tool to remove the software, as manual removal of the deep system hooks can cause system instability.",
    "Initiate a mandatory password reset for all accounts accessed on the machine, as the keystroke logs may have already exposed them."
  ],
  "what_to_avoid": [
    "Do not assume the software is benign just because it is commercially available; in the wrong hands, it is a highly effective espionage tool.",
    "Avoid alerting the user immediately if insider threat or domestic abuse is suspected, as this may tip off the person monitoring the device."
  ],
  "target_industries": [
    "Global / Opportunistic"
  ],
  "motivation": "Opportunistic",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ],
  "attack_stage": [
    "execution",
    "persistence"
  ],
  "ecosystem": [
    "windows_pe"
  ],
  "is_emerging": false,
  "sources": [
    {
      "name": "Microsoft Defender Threat Encyclopedia - Spyware:Win32/WebWatcher",
      "url": "https://www.microsoft.com/en-us/wdsi/threats/malware-encyclopedia-description?Name=Spyware:Win32/WebWatcher"
    },
    {
      "name": "Malwarebytes Labs - MonitoringTool.WebWatcher Detection Profile",
      "url": "https://www.malwarebytes.com/blog/detections/monitoringtool-webwatcher"
    },
    {
      "name": "MITRE ATT&CK - Input Capture: Keylogging (T1056.001)",
      "url": "https://attack.mitre.org/techniques/T1056/001/"
    }
  ],
  "target_platforms": [
    "Windows 11",
    "Windows 10",
    "Windows 7"
  ]
}