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Star Blizzard deploys RedFlick malware delivery technique in active phishing campaign

2026-09-29 16:53 UTC · Microsoft Security Blog · read the source ↗ #threat-actor#phishing#state-sponsored
  • Engineer — Learn: RedFlick is a novel malware delivery technique, not a patchable CVE; useful for understanding evasion tradecraft that may bypass current email and endpoint controls, but no specific infrastructure change is required today.
  • SOC/IR — Act: Star Blizzard’s active large-scale phishing campaign with the RedFlick delivery technique has been running since January 2026; pull the full Microsoft post for IOCs and ATT&CK TTP mappings, then hunt for RedFlick-associated lures in email gateway logs and sweep endpoint telemetry for associated malware staging behaviors.
  • Leader — Learn: Russian state actor Star Blizzard has evolved its evasion and delivery capabilities; file as threat-landscape context and flag for a targeted-sector check — if your organization operates in government, defense, or policy circles, consider a brief to security leadership on exposure.
This entry was curated and judged by AI (Claude) with automated enrichment (CISA KEV / EPSS / public PoC). Verify against the original source before acting. Found a bad verdict? Report it — confirmed errors go to the corrections log.