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

Executive Summary

\nRamnif is a heavily obfuscated alias and variant of the notorious **Ramnit** malware family. Originally discovered in 2010 as a self-replicating worm, Ramnit/Ramnif evolved into a highly sophisticated, modular Banking Trojan and botnet. It is designed for massive data theft, specifically targeting financial credentials, session cookies, and corporate FTP access.\n\n

Propagation and Execution Lifecycle

\nRamnif utilizes multiple vectors for distribution, including exploit kits (like Angler or RIG) hosted on compromised websites, malicious spam campaigns, and lateral movement via infected removable USB drives.\n\nOnce a host is compromised, Ramnif's operations are extensive:\n\n\n

Threat Assessment

\nA Ramnif infection is a severe, multi-faceted security incident. It represents an immediate financial threat due to banking credential theft, while its worm-like self-replication threatens to rapidly contaminate the entire corporate network, complicating incident response efforts.\n\n

Eradication and Incident Response

\n", "cta": "Published by the SystemHelpdesk team.", "aliases": [ "Trojan.Ramnit", "Worm.Ramnif", "Win32/Ramnit" ], "enrichment_level": "expert-seo", "faq": [ { "@type": "Question", "name": "What is Ramnif and what threat category does it belong to?", "acceptedAnswer": { "@type": "Answer", "text": "Ramnif 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 Ramnif establish persistence and evade defensive controls?", "acceptedAnswer": { "@type": "Answer", "text": "Ramnif 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 Ramnif compromise?", "acceptedAnswer": { "@type": "Answer", "text": "Security teams responding to Ramnif 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.Ramnit?", "acceptedAnswer": { "@type": "Answer", "text": "Trojan.Ramnit 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.Ramnit across enterprise endpoints?", "acceptedAnswer": { "@type": "Answer", "text": "Defenders should hunt for Trojan.Ramnit 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": [ "T1055", "T1056.004", "T1114", "T1091" ], "cisa_advisory": null, "last_updated": "2026-10-15", "type": "Banking Trojan", "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": "T1055", "name": "Process Injection", "tactic": "Defense Evasion" }, { "id": "T1056.004", "name": "Input Capture: Credential API Hooking", "tactic": "Credential Access" }, { "id": "T1114", "name": "Email Collection (Harvesting addresses for spamming)", "tactic": "Collection" }, { "id": "T1091", "name": "Replication Through Removable Media (The core propagation mechanism using autorun.inf)", "tactic": "Lateral Movement" } ], "containment_steps": [ "Sever network connectivity for the flagged endpoint to terminate persistent command-and-control (C2) communication channels and stop Ramnif from retrieving secondary stage payloads.", "Capture process memory triage to detect and terminate malicious threads injected by Ramnif 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 Ramnif 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 Ramnif execution timeframe." ], "what_to_avoid": [ "Do not assume the incident is resolved simply because an antivirus tool removed the initial Ramnif 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 Ramnif 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" ] }