{
  "family": "pornblackmailer",
  "sample_count": 1,
  "category": "ransomware",
  "description": "Ransomware/Scareware:Win32/Pornblackmailer represents a highly manipulative form of extortion software. Unlike traditional ransomware that encrypts files, this threat locks the user's screen (`T1491.002`) and displays a threatening message claiming to have recorded the victim visiting adult websites using their own webcam. It demands an immediate ransom payment (often in cryptocurrency or gift cards) to prevent the alleged video and browsing history from being emailed to all their contacts.<br><br><b>Understanding Pornblackmailer (Extortion/Scareware)</b><br>To an end-user, this is an incredibly distressing, panic-inducing event. The software preys on fear and embarrassment to bypass logical decision-making. For a security team, it is important to recognize that in almost all cases, the attacker *does not actually have* webcam footage or a complete contact list; it is a psychological bluff. The primary mechanism is locking the screen, not encrypting the data.<br><br><b>Execution and Extortion Mechanics</b><br>Pornblackmailer is typically distributed via drive-by downloads on compromised adult sites or through spam emails. Upon execution, it terminates `explorer.exe` to hide the desktop and taskbar, and launches a full-screen, uncloseable window displaying the ransom note. It establishes persistence via the Registry Run keys or Winlogon Shell modifications (`T1547.004`) to ensure the lock screen appears immediately upon reboot. It often disables the Task Manager (`T1562.001`) to prevent easy termination.<br><br><b>Indicators of Compromise & Impact</b><br>The impact is psychological trauma and potential financial loss if the victim pays the fake ransom. Host-based IoCs include the highly visible, full-screen lock message, EDR alerts for the termination of `explorer.exe`, unauthorized modifications to `HKLM\\SOFTWARE\\Microsoft\\Windows NT\\CurrentVersion\\Winlogon\\Shell`, and the presence of suspicious executables in `%AppData%`. Network IoCs are minimal, often just a ping to confirm the infection to the attacker.",
  "cta": "Published by the SystemHelpdesk team.",
  "aliases": [],
  "enrichment_level": "expert-seo",
  "faq": [
    {
      "@type": "Question",
      "name": "What is Pornblackmailer and what threat category does it belong to?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Pornblackmailer 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 Pornblackmailer establish persistence and evade defensive controls?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Pornblackmailer 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 Pornblackmailer compromise?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Security teams responding to Pornblackmailer 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 Pornblackmailer employ during execution?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Pornblackmailer 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 Pornblackmailer, and what is the recommended recovery procedure?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Decryption availability for Pornblackmailer 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": [
    "T1547.004",
    "T1562.001",
    "T1491.002"
  ],
  "cisa_advisory": null,
  "last_updated": "2026-06-09",
  "mitre_attack_detail": [
    {
      "id": "T1491.002",
      "name": "Defacement: Internal Defacement (Locking the screen with the extortion message)",
      "tactic": "Impact"
    },
    {
      "id": "T1562.001",
      "name": "Impair Defenses: Disable or Modify Tools (Disabling Task Manager to prevent escape)",
      "tactic": "Defense Evasion"
    },
    {
      "id": "T1547.004",
      "name": "Boot or Logon Autostart Execution: Winlogon Helper DLL (Hijacking the logon process to lock the screen early)",
      "tactic": "Persistence"
    }
  ],
  "containment_steps": [
    "Do not pay the ransom; the attacker does not actually possess the claimed webcam footage, and paying will not unlock the screen.",
    "Boot the system into 'Safe Mode with Command Prompt' to bypass the Winlogon/Run key persistence mechanisms.",
    "Use the command prompt to launch `regedit.exe` and repair the `Winlogon\\Shell` key (it should point to `explorer.exe`) and remove the malicious Run keys.",
    "Run a full offline antivirus scan to remove the actual executable once the screen lock is bypassed."
  ],
  "what_to_avoid": [
    "Under no circumstances should the victim communicate with the attackers or pay the ransom; it is a bluff.",
    "Avoid assuming data has been encrypted; this family typically only locks the screen and leaves the underlying files untouched."
  ],
  "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"
  ]
}