{
  "family": "iespy",
  "sample_count": 1,
  "category": "advanced_threat",
  "description": "<h3>Executive Summary</h3>\nIESpy (Internet Explorer Spy) is a classification for a category of malicious Spyware and Browser Helper Objects (BHOs) specifically designed to target Microsoft Internet Explorer. Operating silently in the background, IESpy monitors all web traffic, harvests sensitive credentials, and tracks browsing habits, transmitting this confidential data to remote servers controlled by threat actors or unscrupulous marketing firms.\n\n<h3>Technical Capabilities and Evasion</h3>\nIESpy utilities leverage the extensibility of Internet Explorer to integrate deeply into the browser's rendering engine.\n\nCore surveillance capabilities include:\n<ul>\n<li><strong>BHO Integration:</strong> The malware registers itself as a Browser Helper Object (BHO) in the Windows Registry. This allows the spyware to load a dynamic-link library (DLL) into the Internet Explorer process space every time the browser is launched, gaining full access to the Document Object Model (DOM) of every page visited.</li>\n<li><strong>Credential Harvesting (Form Grabbing):</strong> IESpy intercepts HTTP POST requests before they are encrypted via SSL/TLS. This \"form grabbing\" technique allows the malware to steal usernames, passwords, and credit card details precisely as the user types them into web forms.</li>\n<li><strong>Telemetry and Tracking:</strong> The spyware continuously logs the URLs visited, search queries entered, and time spent on pages, building a comprehensive profile of the user's activity that is periodically exfiltrated.</li>\n</ul>\n\n<h3>Threat Assessment</h3>\nThe detection of IESpy is a critical security breach, resulting in a total compromise of browser confidentiality. Because it utilizes form grabbing, it effectively bypasses network-level encryption (HTTPS), guaranteeing that any credentials entered in the browser have been stolen.\n\n<h3>Incident Response and Remediation</h3>\n<ul>\n<li><strong>Immediate Isolation:</strong> Isolate the machine immediately to halt the active exfiltration of browsing data and credentials.</li>\n<li><strong>Global Credential Reset:</strong> Every password utilized within Internet Explorer on the infected machine must be considered compromised and immediately changed from a secure device.</li>\n<li><strong>Registry Remediation:</strong> Standard uninstallation is insufficient. Security tools must be used to locate and delete the specific CLSID entries associated with the malicious BHO in the Windows Registry (e.g., under `HKLM\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Explorer\\Browser Helper Objects`).</li>\n<li><strong>Browser Migration:</strong> Due to the inherent vulnerability of the BHO architecture, organizations should strictly limit or entirely deprecate the use of legacy Internet Explorer in favor of modern, sandboxed browsers (Edge, Chrome).</li>\n</ul>",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [
    "Spyware.IESpy",
    "BHO.IESpy",
    "Trojan.Spy.IE"
  ],
  "enrichment_level": "insufficient_information",
  "faq": [],
  "faq_count": 0,
  "mitre_attack": [
    "T1176",
    "T1056.004",
    "T1113",
    "T1115"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-07-01T17:15:09Z",
  "type": "Spyware / BHO",
  "target_industries": [
    "Global / Opportunistic"
  ],
  "motivation": "Opportunistic",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ]
}