{ "family": "shinolock", "sample_count": 1, "category": "ransomware", "description": "

Executive Summary

\nShinolock is a variant of ransomware designed to extort financial payment from victims by encrypting their critical data and demanding cryptocurrency in exchange for the decryption key. It aggressively targets both individual users and enterprise networks, causing severe operational disruption and data loss.\n\n

Technical Execution and Encryption Process

\nShinolock typically gains initial access through compromised Remote Desktop Protocol (RDP) instances (due to weak credentials or missing patches) or via malicious spam campaigns.\n\nOnce a foothold is established, Shinolock executes a highly destructive operational flow:\n\n\n

Threat Impact

\nA Shinolock infection represents a catastrophic security failure. Without offline backups, organizations face the total loss of encrypted data, extended operational downtime, and severe reputational damage. Paying the ransom is strongly discouraged by law enforcement, as it funds criminal enterprises and does not guarantee data recovery.\n\n

Resilience and Remediation Strategies

\n", "cta": "Published by the SystemHelpdesk team.", "aliases": [ "Ransomware.Shinolock", "Win32/Shinolock", "Trojan-Ransom.Shinolock" ], "enrichment_level": "expert-seo", "faq": [ { "@type": "Question", "name": "What is Shinolock and what threat category does it belong to?", "acceptedAnswer": { "@type": "Answer", "text": "Shinolock is classified as a Ransomware. 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 Shinolock establish persistence and evade defensive controls?", "acceptedAnswer": { "@type": "Answer", "text": "Shinolock 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 Shinolock compromise?", "acceptedAnswer": { "@type": "Answer", "text": "Security teams responding to Shinolock 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 cryptographic algorithms and file targeting techniques does Ransomware.Shinolock employ during execution?", "acceptedAnswer": { "@type": "Answer", "text": "Ransomware.Shinolock typically leverages hybrid cryptographic architectures combining symmetric stream or block ciphers (such as AES-256 or ChaCha20) for rapid file encryption with asymmetric algorithms (such as RSA-2048 or Curve25519) to securely protect the session keys. It aggressively targets sensitive file extensions including corporate documents, databases, virtual disks, and backups while systematically executing commands to delete Volume Shadow Copies (vssadmin delete shadows /all /quiet) and disable system recovery options." } }, { "@type": "Question", "name": "Are decryptors available for Ransomware.Shinolock, and what is the recommended recovery procedure?", "acceptedAnswer": { "@type": "Answer", "text": "Decryption availability for Ransomware.Shinolock depends on whether security researchers or law enforcement (such as the No More Ransom initiative) have recovered the master private keys or discovered flaws in its key generation routines. Victims should never pay the extortion demand, as payment fuels criminal operations without guaranteeing file restoration. The recommended recovery procedure entails isolating infected hosts, conducting forensic disk imaging, identifying the root access vector, and restoring validated systems from immutable offline backups." } } ], "faq_count": 5, "mitre_attack": [ "T1486", "T1490", "T1562.001", "T1078" ], "cisa_advisory": null, "last_updated": "2026-10-15", "type": "Ransomware", "target_industries": [ "Healthcare", "Critical Infrastructure", "Enterprise" ], "motivation": "Financial Extortion", "threat_actors": [ "Unknown / Cybercriminal" ], "target_geographies": [ "Global" ], "attack_stage": [ "defense_evasion", "impact" ], "ecosystem": [ "windows_pe" ], "is_emerging": false, "mitre_attack_detail": [ { "id": "T1486", "name": "Data Encrypted for Impact", "tactic": "Impact" }, { "id": "T1490", "name": "Inhibit System Recovery (Behaviorally blocking the deletion of backups)", "tactic": "Impact" }, { "id": "T1562.001", "name": "Impair Defenses: Disable or Modify Tools", "tactic": "Defense Evasion" }, { "id": "T1078", "name": "Valid Accounts (The goal of the attack)", "tactic": "Initial Access" } ], "containment_steps": [ "Immediately isolate affected host(s) from the internal network (disconnect physical Ethernet and disable Wi-Fi/Bluetooth) to prevent Shinolock from spreading laterally or encrypting network-attached storage (NAS) and shared SMB volumes.", "Preserve volatile system memory (RAM capture) on a representative endpoint before attempting a reboot or power-down, as Shinolock symmetric encryption keys or uncompiled payload components may still reside in memory.", "Audit process execution logs and terminate active scripting interpreters (e.g. PowerShell, CMD, WScript) or commands executing 'vssadmin.exe delete shadows' or 'wbadmin' used by Shinolock to inhibit recovery.", "Investigate the initial compromise vector (such as exposed RDP instances, spearphishing attachments, or vulnerable edge gateways) and enforce an immediate credential reset for all compromised Active Directory accounts.", "Restore critical assets and databases exclusively from verified, air-gapped, or immutable offline backups once the Shinolock binary and related persistence hooks are eradicated." ], "what_to_avoid": [ "Do not restart or power cycle infected systems prematurely; doing so destroys volatile RAM encryption keys and may trigger bootloader locking logic embedded in Shinolock.", "Avoid negotiating or paying the extortion demand without prior forensic evaluation and consultation with incident response specialists, as payment does not guarantee data recovery.", "Do not connect clean backup drives or external storage to the affected network until Shinolock eradication is completely verified." ], "target_platforms": [ "Windows 11", "Windows 10", "Windows Server 2022", "Windows Server 2019" ] }