{
  "family": "streespyer",
  "sample_count": 1,
  "category": "trojan",
  "description": "<h3>Executive Summary</h3>\nStreeSpyer is a specialized Trojan and Info-stealer designed to covertly infiltrate Windows systems and harvest highly sensitive data. Unlike generic droppers, StreeSpyer's primary objective is immediate espionage: it actively searches for, packages, and exfiltrates user credentials, financial information, and specific document types to a remote command-and-control (C2) server controlled by the attackers.\n\n<h3>Infection Vector and Technical Capabilities</h3>\nStreeSpyer is typically distributed via highly targeted spear-phishing campaigns containing weaponized attachments (e.g., deceptive PDF files or Office documents with malicious macros) or delivered as a secondary payload by an initial access broker.\n\nOnce executed, the malware focuses entirely on data aggregation:\n<ul>\n<li><strong>Credential Harvesting:</strong> StreeSpyer immediately targets web browsers (Chrome, Firefox, Edge) to extract saved passwords, autofill data, and session cookies. It also attempts to decrypt credentials stored in FTP clients, email clients (like Outlook), and popular password managers.</li>\n<li><strong>Keylogging and Screen Capture:</strong> To capture real-time data, the trojan often implements a user-mode keylogger to record keystrokes (focusing on login portals) and periodically captures screenshots of the victim's desktop.</li>\n<li><strong>Data Exfiltration:</strong> The stolen data is aggregated, compressed (often into a ZIP or RAR archive), and encrypted before being transmitted back to the C2 server over standard web ports (HTTPS) or via FTP to evade deep packet inspection.</li>\n</ul>\n\n<h3>Threat Assessment</h3>\nA StreeSpyer infection is a critical security breach resulting in immediate data loss. The exfiltrated credentials can be used to compromise the user's personal accounts, pivot laterally across the corporate network, or access sensitive cloud infrastructure (like AWS or Microsoft 365) without triggering brute-force alerts.\n\n<h3>Incident Response and Remediation</h3>\n<ul>\n<li><strong>Immediate Isolation:</strong> Sever the affected machine's network connection immediately to halt any active or pending data exfiltration.</li>\n<li><strong>Comprehensive Credential Reset:</strong> Assume all credentials utilized on the infected machine, as well as any stored in browsers or password managers, are fully compromised. Initiate an immediate, organization-wide password reset for the affected user, and invalidate all active session tokens.</li>\n<li><strong>Forensic Analysis:</strong> Conduct a forensic review of the endpoint to determine the initial vector of compromise and to ensure StreeSpyer did not deploy secondary backdoors prior to detection.</li>\n</ul>",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [
    "Trojan.StreeSpyer",
    "Spyware.StreeSpyer",
    "PWS.Win32.StreeSpyer"
  ],
  "enrichment_level": "insufficient_information",
  "faq": [],
  "faq_count": 0,
  "mitre_attack": [
    "T1056.001",
    "T1552.001",
    "T1048"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-07-01T16:46:31Z",
  "type": "Info-stealer",
  "target_industries": [
    "Global / Opportunistic"
  ],
  "motivation": "Opportunistic",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ]
}