All Threat Groups ID: atomsilo
Active & Online 7 Victims Disclosed RSS Feed

Atomsilo Syndicate Dossier

First Intercepted
2021-12-21
Latest Disclosure
2026-03-10
Victim Velocity
1.0 / claim

Threat Profile & Operational Narrative

AtomSilo is a new Ransomware recently seen in September 2021 during one of their attacks by exploiting a recently revealed vulnerability (CVE-2021-26084) in Atlassian’s Confluence Collaboration Software for initial access. The Ransomware used the double extortion method which is gaining popularity among ransomware threat actors where they first, exfiltrate the confidential information and as a second step encrypt the system files.

Known Dark Web Infrastructure & Mirrors

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OFFLINE
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OFFLINE
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OFFLINE
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ONLINE

Disclosed Victims & Incident Archive (7)

Disclosed Victim Organization Sector Country
2026-03-10 Cristália - Indústria Farmacêutica General --
2026-02-24 A large bank in Asia General --
2021-12-21 Tegravendas General --
2021-12-21 Tegra Vendas General --
2021-12-21 Eisai Co., Ltd General --
2021-12-21 LIGHT CONVERSION General --
2021-12-21 Cristália - Indústria Farmacêutica General --