Loading threat actor…
Cylance is a ransomware family identified as one of several VMware ESXi-focused lockers descended from the leaked Babuk source code. It is unrelated to the security company of the same name. The family has been cited in reporting on the expansion of Linux and ESXi ransomware during 2022 and 2023, when leaked Babuk code materially lowered the barrier to entry for actors developing hypervisor-targeting encryptors. Available high-confidence reporting places Cylance among newer ESXi ransomware strains associated with Babuk code reuse, but does not provide sufficient corroborated detail to attribute it to a specific intrusion set, country of origin, or stable operator cluster. Based on the available evidence, Cylance should be understood primarily as a Babuk-derived ransomware variant used against VMware ESXi environments, reflecting the broader trend of ransomware actors adopting Linux-focused encryption tooling for enterprise virtualization infrastructure.
Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.
Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Sectors the actor has been observed targeting.
2 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Named ransomware family/group cited as a Babuk ESXi source-code descendant.
Named as an ESXi-focused ransomware family/operator in the context of Babuk code reuse (attribution/relationship not further detailed).
Match sector + geo + tech-stack targeting against your real footprint.
Every observed MITRE ATT&CK technique, grouped by tactic.
Families this actor is known to deploy, with IOCs and behavior.
CVEs this actor has used in known campaigns.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Domains, IPs, and hashes tied to this actor, refreshed continuously.