{
  "family": "minebicoin",
  "sample_count": 2,
  "category": "ransomware",
  "description": "Riskware:Win32/Minebicoin is a heuristic detection representing the widespread threat of 'Cryptojacking'. It flags executables or scripts designed to hijack an endpoint's CPU or GPU resources to mine cryptocurrency (most commonly Monero) without the user's consent or knowledge. While not inherently destructive to data like ransomware, Cryptojacking causes severe hardware degradation, massive power consumption spikes, and significant performance throttling across corporate environments.<br><br><b>Understanding Minebicoin (Cryptojacking)</b><br>To an end-user, the machine suddenly becomes incredibly slow, fans run at maximum speed, and the laptop battery drains rapidly. For an IT administrator, a Minebicoin outbreak looks like a massive, unexplained spike in CPU utilization across the fleet (`T1496`). Threat actors favor cryptojacking because it provides a silent, continuous revenue stream, unlike the noisy, one-time extortion of ransomware.<br><br><b>Execution and Resource Hijacking Mechanics</b><br>Minebicoin variants are delivered via phishing, exploit kits, or bundled with pirated software. They establish persistence using standard methods (Scheduled Tasks, Registry Run keys - `T1547.001`). Upon execution, the malware often injects a specialized mining payload (like a modified version of XMRig) into legitimate system processes (like `svchost.exe` or `notepad.exe`) to hide its CPU usage (`T1055`). It then connects to a mining pool via the Stratum protocol over TCP, constantly receiving hashing jobs and returning the results to enrich the attacker's wallet.<br><br><b>Indicators of Compromise & Impact</b><br>The impact is extreme resource exhaustion and increased electricity/hardware costs. Host-based IoCs are highly visible: Task Manager or EDR will show sustained 90-100% CPU/GPU utilization by unknown or injected processes. Network IoCs are definitive: persistent outbound TCP connections (often to non-standard ports) utilizing the Stratum protocol, communicating with known mining pool IP addresses or domains.",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [],
  "enrichment_level": "expert-seo",
  "faq": [
    {
      "@type": "Question",
      "name": "What is Minebicoin and what threat category does it belong to?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Minebicoin 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 Minebicoin establish persistence and evade defensive controls?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Minebicoin 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 Minebicoin compromise?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Security teams responding to Minebicoin 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 Minebicoin employ during execution?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Minebicoin 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 Minebicoin, and what is the recommended recovery procedure?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Decryption availability for Minebicoin 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": [
    "T1547.001",
    "T1055",
    "T1496"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-06-09",
  "mitre_attack_detail": [
    {
      "id": "T1496",
      "name": "Resource Hijacking (The core cryptomining activity)",
      "tactic": "Impact"
    },
    {
      "id": "T1055",
      "name": "Process Injection (Hiding the miner inside legitimate processes)",
      "tactic": "Defense Evasion"
    },
    {
      "id": "T1547.001",
      "name": "Boot or Logon Autostart Execution (Persistence)",
      "tactic": "Persistence"
    }
  ],
  "containment_steps": [
    "Isolate the affected machines to halt the resource drain and prevent the malware from potentially moving laterally (some miners include worm capabilities).",
    "Identify the malicious process causing the high CPU usage via EDR or Task Manager and terminate it.",
    "Update corporate firewall and DNS sinkhole rules to block access to known cryptocurrency mining pools and Stratum protocol traffic.",
    "Run a full AV scan to identify and remove the dropper executable and its associated persistence mechanisms."
  ],
  "what_to_avoid": [
    "Do not ignore complaints of slow computers or loud fan noise; these are the primary physical indicators of a cryptojacking infection.",
    "Avoid relying solely on static file signatures; attackers frequently update the miner binaries, making behavioral detection (high CPU + network pooling) critical."
  ],
  "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,
  "target_platforms": [
    "Windows 11",
    "Windows 10",
    "Windows Server 2022",
    "Windows Server 2019"
  ]
}