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Ransomware group profile · #376 by claimed victims

Bluesky ransomware

BlueSky is a financially motivated ransomware group active from mid-2022 into early 2023, using multi-threaded ChaCha20/Curve25519 encryption for fast file locking on Windows hosts, with code sharing significant overlap with Conti v2/v3 and Babuk, attributed with high confidence to Russian-origin threat actors.

Active First seen Sep 2026
0Victims claimed on leak sites
0Victims in the last 30 days
0Victims in the last 90 days
0Countries hit
1Leak-site URLs tracked, 0 online
—Latest claim recorded

Tactics, techniques and procedures

ATT&CK technique mapping for Bluesky is in progress. Victimology, infrastructure status and leak-site tracking are live above.

Indicators, detections and the full playbook

Hashes, C2 addresses, onion services, Sigma and YARA detections per technique, and the negotiation transcripts are available to signed-in analysts.

See full IOCs

Frequently asked

Is Bluesky ransomware still active?
Bluesky is tracked as active.
How many victims has Bluesky claimed?
VULONE has recorded 0 leak-site victim claims attributed to Bluesky, across 0 countries and 0 sectors.
Which industries does Bluesky target?
Sector data for Bluesky victims is not yet available.
Which countries are most affected by Bluesky?
Country data for Bluesky victims is not yet available.
Where does VULONE get Bluesky victim data?
Claims are collected continuously from the group's own leak sites and cross-checked with ransomware.live and RansomLook. A claim is the group's assertion, not a confirmed breach.

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Victim claims are collected from leak sites and enrichment partners (ransomware.live, RansomLook) and represent the group's own assertions, not confirmed breaches. Profile last updated 16 September 2026. Questions or corrections: [email protected].