{
  "family": "sivis",
  "sample_count": 7180,
  "category": "file_infector",
  "description": "Sivis is a file-infecting virus family that overwrites legitimate executable files with malicious code, often causing system instability and data loss. Unlike modern stealth malware, Sivis is destructive and noisy, frequently corrupting files beyond recovery. It typically spreads through infected removable drives and network shares. Sivis infections often require restoring files from clean backups because in-place removal cannot recover overwritten code.",
  "cta": "If you suspect this malware on your system, do not attempt manual removal. Contact SystemHelpdesk expert MSP support at 855-783-7555 for professional incident response guidance.",
  "aliases": [],
  "enrichment_level": "hand-curated",
  "faq": [
    {
      "@type": "Question",
      "name": "What is Sivis?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Sivis is a file-infecting virus family that overwrites legitimate executable files with malicious code, often causing system instability and data loss. Unlike modern stealth malware, Sivis is destructive and noisy, frequently corrupting files beyond recovery. It typically spreads through infected removable drives and network shares. Sivis infections often require restoring files from clean backups because in-place removal cannot recover overwritten code."
      }
    },
    {
      "@type": "Question",
      "name": "How does Sivis spread?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Sivis is a file-infecting virus that prepends or appends its code to executable files, spreading when those infected executables run."
      }
    },
    {
      "@type": "Question",
      "name": "What are the signs of a Sivis infection?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "Modified file sizes and timestamps across executables, unexpected slow startup of common programs, and AV detections for Sivis are diagnostic."
      }
    },
    {
      "@type": "Question",
      "name": "What should I do if I think I have Sivis on my system?",
      "acceptedAnswer": {
        "@type": "Answer",
        "text": "If you suspect this malware on your system, do not attempt manual removal. Contact SystemHelpdesk expert MSP support at 855-783-7555 for professional incident response guidance."
      }
    }
  ],
  "faq_count": 4,
  "mitre_attack": [],
  "cisa_advisory": null,
  "last_updated": "2026-05-27"
}