{
  "family": "infinitetear",
  "sample_count": 1,
  "category": "trojan",
  "description": "<h3>Executive Summary</h3>\nInfiniteTear is a highly sophisticated, stealthy Backdoor and Remote Access Trojan (RAT) historically associated with Advanced Persistent Threat (APT) groups engaging in targeted espionage. It is designed to provide threat actors with long-term, covert access to high-value networks, enabling the exfiltration of sensitive intellectual property, government secrets, or corporate strategies while remaining undetected by standard security controls.\n\n<h3>Infection Vector and Technical Capabilities</h3>\nInfiniteTear is not distributed broadly. It is deployed selectively, typically following a successful spear-phishing campaign that delivers a primary loader, or deployed laterally by an attacker who has already breached the network perimeter using stolen credentials or zero-day exploits.\n\nOnce deployed, InfiniteTear exhibits advanced capabilities:\n<ul>\n<li><strong>Deep Stealth and Evasion:</strong> The malware often operates entirely in memory (fileless execution) to evade disk-based anti-virus scans. It employs complex API hooking and process hollowing to inject itself into legitimate system processes (like `svchost.exe`), masking its execution.</li>\n<li><strong>Custom Encrypted C2:</strong> InfiniteTear utilizes highly customized, encrypted protocols for Command and Control (C2) communication. It often blends its traffic with legitimate protocols (like HTTPS or DNS) and utilizes domain generation algorithms (DGAs) or hardcoded, compromised infrastructure to make detection difficult.</li>\n<li><strong>Advanced Espionage Toolset:</strong> The backdoor provides a comprehensive suite of espionage tools, allowing operators to execute arbitrary commands, harvest credentials from LSASS memory, capture screens, log keystrokes, and silently compress and exfiltrate specific files or databases.</li>\n</ul>\n\n<h3>Threat Assessment</h3>\nThe detection of InfiniteTear on a network is a critical, \"break-glass\" security incident. It indicates a successful, targeted breach by a highly capable adversary (often state-sponsored or highly organized cybercriminals). The primary concern is not system destruction, but the silent, long-term hemorrhaging of critical data.\n\n<h3>Incident Response and Remediation</h3>\n<ul>\n<li><strong>Forensic Triage and Containment:</strong> Do not immediately wipe the machine. Isolate the endpoint from the internet, but keep it powered on to allow Incident Response teams to capture volatile memory (RAM) to analyze the memory-resident components and identify the C2 infrastructure.</li>\n<li><strong>Enterprise-Wide Threat Hunt:</strong> The presence of InfiniteTear on one endpoint guarantees lateral movement has occurred. A comprehensive enterprise-wide threat hunt must be initiated to identify all compromised assets, stolen credentials, and secondary backdoors.</li>\n<li><strong>Complete Architecture Review:</strong> Remediation requires a full rebuild of the compromised endpoints from clean baselines, a complete reset of the Active Directory environment (including the KRBTGT account), and a fundamental review of network segmentation and access controls.</li>\n</ul>",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [
    "Backdoor.InfiniteTear",
    "APT.InfiniteTear",
    "Trojan.Tear"
  ],
  "enrichment_level": "insufficient_information",
  "faq": [],
  "faq_count": 0,
  "mitre_attack": [
    "T1059.003",
    "T1055",
    "T1071.001",
    "T1003.001",
    "T1048"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-07-02T06:52:06Z",
  "type": "APT / Backdoor",
  "target_industries": [
    "Global / Opportunistic"
  ],
  "motivation": "Opportunistic",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ]
}