Star Blizzard swaps ClickFix for RedFlick to widen phishing reach
Microsoft Threat Intelligence reported on Sept. 29 that Russia-linked APT group Star Blizzard has replaced its ClickFix social-engineering technique with a new malware delivery method called RedFlick. The group, also known as ColdRiver or Callisto, has used RedFlick since January to install its CosmicPulse backdoor via scheduled tasks, requiring only a single victim interaction instead of multiple steps.
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Microsoft suggests the simplified infection process, combined with a shift to larger-scale phishing campaigns, could make Star Blizzard's attacks more successful and harder to detect. Given the group's history of targeting journalists, NGOs, and Russia experts tied to Ukraine, the change may signal an effort to compromise more victims with less friction, according to Microsoft's analysis.
- Star Blizzard replaced ClickFix with a new technique called RedFlick starting in January.
- RedFlick delivers the CosmicPulse backdoor via scheduled tasks with just one user interaction.
- Microsoft warns the simplified method may increase phishing success against journalists, NGOs, and Russia experts.
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Published there as: “Russia's Star Blizzard Ditches ClickFix to Widen Phishing Net”
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