{
  "family": "nukesped",
  "sample_count": 4,
  "category": "trojan",
  "description": "Backdoor:Win32/Nukesped is a highly sophisticated, persistent backdoor remote access trojan (RAT) heavily attributed to the **Lazarus Group (HIDDEN COBRA)**, a North Korean state-sponsored advanced persistent threat (APT). Nukesped (and its variants) has been deployed in high-profile cyberespionage and financially motivated attacks worldwide, targeting cryptocurrency exchanges, financial institutions, the aerospace industry, and critical infrastructure.<br><br><b>Understanding Nukesped (Lazarus Group APT)</b><br>To an end-user, Nukesped is entirely invisible. For a security operations center (SOC), the detection of Nukesped is a critical 'Code Red' event, indicating that the network has been breached by a highly capable nation-state adversary. Nukesped is not a noisy, destructive wiper; it is designed for long-term intelligence gathering, lateral movement, and the facilitation of multi-million dollar cryptocurrency heists.<br><br><b>Execution, Evasion, and C2 Mechanics</b><br>Lazarus operators typically deploy Nukesped following a successful spear-phishing campaign (`T1566.001`), watering hole attack, or the exploitation of perimeter vulnerabilities (like vulnerable VPNs or unpatched web servers). The malware often utilizes advanced evasion techniques, including DLL side-loading (`T1574.002`), where a legitimate, signed executable (e.g., a known antivirus component or legitimate software updater) is hijacked to load the malicious Nukesped DLL into memory, bypassing many static and behavioral defenses. It establishes persistence via hidden scheduled tasks or modifying system services (`T1543.003`). The backdoor communicates with an elaborate, heavily obfuscated Command and Control (C2) infrastructure (`T1071.001`), allowing attackers to execute arbitrary shell commands (`T1059.003`), manipulate files, steal credentials, and pivot deeper into the network.<br><br><b>Indicators of Compromise & Impact</b><br>The impact is a total, state-sponsored compromise of the network, risking massive financial loss and intellectual property theft. IoCs require advanced EDR: look for DLL side-loading events involving specific known-vulnerable signed binaries, unexpected network connections originating from those hijacked binaries, and anomalous scheduled tasks executing from temporary directories.",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [],
  "enrichment_level": "expert-seo",
  "faq": [
    {
      "@type": "Question",
      "name": "What is Nukesped and what threat category does it belong to?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Nukesped 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 Nukesped establish persistence and evade defensive controls?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Nukesped 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 Nukesped compromise?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Security teams responding to Nukesped 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 Nukesped?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Nukesped 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 Nukesped across enterprise endpoints?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Defenders should hunt for Nukesped 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": [
    "T1071.001",
    "T1059.003",
    "T1566.001",
    "T1574.002"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-06-09",
  "mitre_attack_detail": [
    {
      "id": "T1574.002",
      "name": "Hijack Execution Flow: DLL Side-Loading (Using legitimate binaries to load the payload)",
      "tactic": "Defense Evasion"
    },
    {
      "id": "T1059.003",
      "name": "Command and Scripting Interpreter: Windows Command Shell",
      "tactic": "Execution"
    },
    {
      "id": "T1071.001",
      "name": "Application Layer Protocol: Web Protocols (C2 Communication)",
      "tactic": "Command and Control"
    },
    {
      "id": "T1566.001",
      "name": "Phishing: Spearphishing Attachment",
      "tactic": "Initial Access"
    }
  ],
  "containment_steps": [
    "Do not immediately terminate the connection if possible; engage Incident Response (IR) specialists to monitor the attacker's lateral movement and identify all compromised assets before pulling the plug.",
    "Once IR is engaged, physically isolate the affected network segments to trap the attacker.",
    "Capture extensive live memory images (RAM dumps) of compromised endpoints to extract the decrypted Nukesped payload and its C2 configuration.",
    "Assume the entire Active Directory domain is compromised (Golden Ticket scenario); prepare for a full domain rebuild and enterprise-wide password reset."
  ],
  "what_to_avoid": [
    "Do NOT attempt to remediate a Nukesped infection using standard IT procedures (e.g., running AV and rebooting); APT actors will immediately notice the remediation and deploy destructive wipers or establish deeper backdoors.",
    "Avoid relying solely on IoCs (IPs/Hashes); Lazarus frequently rotates infrastructure. Focus on behavioral detection of DLL side-loading."
  ],
  "target_industries": [
    "Global / Opportunistic"
  ],
  "motivation": "Opportunistic",
  "threat_actors": [
    "Unknown / Cybercriminal"
  ],
  "target_geographies": [
    "Global"
  ],
  "attack_stage": [
    "execution",
    "persistence"
  ],
  "ecosystem": [
    "windows_pe"
  ],
  "is_emerging": false,
  "target_platforms": [
    "Windows 11",
    "Windows 10",
    "Windows 7"
  ]
}