Our takeMicrosoft reports Russia-linked Star Blizzard sent over 100 organizations fake event invites since January to deliver a Windows backdoor; at least one infection confirmed. Most targets were Ukraine-related entities in the US and UK. Verify invite senders and block unsolicited attachments.Cyber Resilience desk
Sources (2)
- hackernews · hackernews
- cyberscoop · cyberscoop
What this means for you — Security leader:Review email logs and user reports for suspicious event invitations from unknown organizers. Block or sandbox Office documents that trigger external downloads or macros.
What this means for you — Lean IT orgs:Be wary of unsolicited event invitations arriving by email. If you receive one, do not open any attached Word documents or click links inside them; verify the sender by phone first.
What this means for you — MSP:Advise clients to tighten email gateway rules on .doc/.docm attachments and external image links. Monitor for Star Blizzard (RedFlick) TTPs and remind users not to open event invites without verification.
What this means for you — Researcher:Track the evolving lure and delivery chain; Microsoft has not yet released full IOCs.