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Vice Society is a ransomware and double-extortion threat actor active since 2021 and widely associated with use of the HelloKitty ransomware family, including Windows and Linux/ESXi variants. It has been described as a probable HelloKitty spin-off and has conducted human-operated intrusions in which data theft is paired with encryption and extortion. The group has also been linked to later overlap or possible operational continuity with Rhysida. Vice Society has demonstrated capability against virtualized infrastructure, including VMware ESXi environments, where HelloKitty-based tooling attempts to shut down virtual machines before encrypting files. The actor has also used the PrintNightmare vulnerabilities, including CVE-2021-1675 and CVE-2021-34527, for lateral movement across victim networks. Reporting further associates the group with SystemBC, indicating use of commodity post-compromise malware to maintain access, support reconnaissance, and facilitate lateral movement and follow-on payload deployment. Observed tradecraft includes hands-on-keyboard operations, data exfiltration, encryption for impact, exploitation of public vulnerabilities for internal spread, and use of supporting malware commonly paired with Cobalt Strike in broader ransomware ecosystems. Vice Society is best characterized as a financially motivated extortion actor rather than a ransomware-as-a-service platform.
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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.
Geographies tied to known operations.
3 distinct techniques observed across reporting, grouped by tactic. Hover any cell for the evidence excerpt; click through for MITRE's full description.
1 malware family attributed to this actor across reporting.
1 indicator attributed to this actor: domains, IPs, hashes, and other artifacts pulled from reporting. View more in app.
4 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Listed as one of multiple threat groups associated with using SystemBC.
Threat group that exclusively uses HelloKitty in human-operated double-extortion campaigns against companies.
A ransomware group described here as a probable HelloKitty spin-off, with Windows and Linux encryptors and later campaigns using PrintNightmare for lateral movement and PowerShell for data theft.
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.