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Vidar Infostealer Being Spread through Phishing Emails

July 5, 2026 · AhnLab ASEC · Severity: HIGH

AhnLab ASEC reports that Vidar infostealer, first identified in 2018 and operating under a Malware-as-a-Service model, continues to be actively distributed through phishing emails. The malware targets sensitive credentials and data from infected systems. Its long-running presence demonstrates the enduring effectiveness of the MaaS distribution model.

Key Takeaways

  • Vidar Infostealer Being Spread through Phishing Emails — 1. Overview First identified in 2018, Vidar operates under a Malware-as-a-Service (MaaS) model...
  • High-severity alert: organizations should assess their exposure and apply mitigations promptly.
  • Users should verify unexpected email attachments through alternate channels before opening them.
  • Infostealer malware under a Malware-as-a-Service model enables low-sophistication attackers to steal credentials and sensitive data.
  • AI and LLM usage introduces new attack surfaces, including hallucinated domains and prompt injection risks.
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