{ "family": "negasteal", "sample_count": 1, "category": "trojan", "description": "

Executive Summary

\nNegaSteal is a sophisticated Information Stealer (InfoStealer) and credential harvesting trojan. Often sold as Malware-as-a-Service (MaaS) on dark web forums, it is designed to silently extract a massive variety of sensitive data from infected Windows endpoints, including saved passwords, session cookies, cryptocurrency wallets, and VPN configurations.\n\n

Infection Vector and Extraction Methodology

\nNegaSteal is heavily distributed via mass malspam campaigns. The phishing emails frequently utilize socially engineered lures (fake invoices, POs, or shipping manifests) containing malicious attachments—such as weaponized Excel documents, ISO images, or deeply obfuscated VBS/JavaScript droppers.\n\nUpon execution, NegaSteal performs rapid, automated data extraction:\n\n\n

Security and Privacy Implications

\nA NegaSteal infection is a critical security breach resulting in the immediate compromise of both corporate and personal credentials. This stolen intelligence is frequently used immediately by the attackers to pivot laterally into corporate networks (via VPN or RDP) or sold on dark web marketplaces to Initial Access Brokers (IABs).\n\n

Incident Response and Mitigation

\n", "cta": "Published by the SystemHelpdesk team.", "aliases": [ "Trojan.NegaSteal", "PasswordStealer.Nega", "Win32/NegaSteal" ], "enrichment_level": "expert-seo", "faq": [ { "@type": "Question", "name": "What is Negasteal and what threat category does it belong to?", "acceptedAnswer": { "@type": "Answer", "text": "Negasteal is classified as a Trojan. Documented across security telemetry, it is engineered to execute unauthorized operations, establish persistent footholds on target endpoints, and facilitate malicious campaigns targeting enterprise and individual environments." } }, { "@type": "Question", "name": "How does Negasteal establish persistence and evade defensive controls?", "acceptedAnswer": { "@type": "Answer", "text": "Negasteal typically establishes persistence through registry run keys, scheduled tasks, or service installations, while evading signature-based antivirus solutions through code obfuscation, memory injection, or anti-analysis sandbox checks." } }, { "@type": "Question", "name": "What are the essential incident response steps for mitigating a Negasteal compromise?", "acceptedAnswer": { "@type": "Answer", "text": "Security teams responding to Negasteal should immediately isolate affected endpoints from the network, perform memory triage to capture volatile forensic artifacts, audit registry and startup persistence mechanisms, revoke exposed user credentials, and restore systems from verified, clean backups." } }, { "@type": "Question", "name": "What secondary payloads and staging behaviors are commonly associated with Trojan.NegaSteal?", "acceptedAnswer": { "@type": "Answer", "text": "Trojan.NegaSteal frequently operates as a loader or dropper designed to establish a foothold before downloading and executing secondary high-impact malware payloads. Depending on the threat actor's objectives, these dropped modules can range from ransomware and banking injects to modular infostealers and remote management backdoors." } }, { "@type": "Question", "name": "How can security operations teams effectively detect and hunt for Trojan.NegaSteal across enterprise endpoints?", "acceptedAnswer": { "@type": "Answer", "text": "Defenders should hunt for Trojan.NegaSteal by deploying behavioral endpoint detection and response (EDR) rules that monitor suspicious process spawning (such as cmd.exe or powershell.exe spawned from office documents or temporary directories), anomalous outbound network connections from non-browser binaries, and unauthorized modifications to Windows Run keys and scheduled task registries." } } ], "faq_count": 5, "mitre_attack": [ "T1555.003", "T1003", "T1048.003", "T1566.001" ], "cisa_advisory": null, "last_updated": "2026-10-15", "type": "InfoStealer", "target_industries": [ "Global / Opportunistic" ], "motivation": "Opportunistic", "threat_actors": [ "Unknown / Cybercriminal" ], "target_geographies": [ "Global" ], "attack_stage": [ "execution", "persistence" ], "ecosystem": [ "windows_pe" ], "is_emerging": false, "mitre_attack_detail": [ { "id": "T1555.003", "name": "Credentials from Web Browsers", "tactic": "Unknown" }, { "id": "T1003", "name": "OS Credential Dumping (Built-in Mimikatz integration)", "tactic": "Credential Access" }, { "id": "T1048.003", "name": "Exfiltration Over Alternative Protocol (Exfiltration via SMTP/Email)", "tactic": "Exfiltration" }, { "id": "T1566.001", "name": "Phishing: Spearphishing Attachment", "tactic": "Initial Access" } ], "containment_steps": [ "Sever network connectivity for the flagged endpoint to terminate persistent command-and-control (C2) communication channels and stop Negasteal from retrieving secondary stage payloads.", "Capture process memory triage to detect and terminate malicious threads injected by Negasteal into legitimate system processes such as explorer.exe or svchost.exe.", "Audit Windows Registry Run keys (HKCU\\Software\\Microsoft\\Windows\\CurrentVersion\\Run) and Task Scheduler entries to locate and purge Negasteal persistence hooks.", "Deploy updated enterprise EDR detection signatures and conduct an out-of-band endpoint scan to isolate dropped binaries and staged payloads.", "Rotate all credentials, domain user passwords, and session cookies active on the system during the Negasteal execution timeframe." ], "what_to_avoid": [ "Do not assume the incident is resolved simply because an antivirus tool removed the initial Negasteal dropper; always verify that secondary payloads and persistence hooks have been eradicated.", "Avoid logging in with Domain Admin or privileged credentials on a machine suspected of running Negasteal until memory triage is complete.", "Do not delay host isolation; automated lateral movement and credential dumping can occur within minutes of initial execution." ], "target_platforms": [ "Windows 11", "Windows 10", "Windows 7" ] }