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Werewolves, also styled WereWolves and tracked as werewolves_group, is a financially motivated ransomware and extortion group active since 2023. It targets Russian organizations, including industrial enterprises, financial and insurance institutions, energy companies, retailers, logistics providers, and telecommunications and IT companies. The group uses ransomware based on leaked LockBit code and conducts double extortion, demanding payment for decryption while threatening to publish stolen information on its data leak site. Werewolves obtains initial access through malicious email campaigns impersonating legitimate businesses and personnel. Its lures include pretrial claims, complaints, financial correspondence, and military conscription notices. Attachments include archives containing malicious Windows shortcuts disguised as PDF documents and Microsoft Office documents exploiting CVE-2017-11882. Its June 2025 campaigns delivered Cobalt Strike Beacon. Its broader toolkit includes AnyDesk, NetScan, Cobalt Strike, Meterpreter, and LockBit. The group uses lookalike infrastructure and sender spoofing to support impersonation. It also claims to assess stolen data for criminal legal implications, commercial value, and information useful to competitors as additional extortion leverage.
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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 malware families attributed to this actor across reporting.
1 CVE this actor has used in observed campaigns. 1 of them exploited in the wild.
46 indicators 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.
Ransomware operations using phishing lures and a consistent toolchain (remote admin, post-exploitation frameworks) with double extortion; uses Office exploit CVE-2017-11882 in delivery.
Double-extortion ransomware activity targeting Russian companies using a variant derived from leaked LockBit ransomware.
A ransomware and extortion group active since 2023, targeting Russian organizations across multiple sectors. Its June 2025 campaign impersonated legitimate businesses and distributed legal-themed emails containing malicious archives or Office documents. All June mailings delivered Cobalt Strike Beacon as the final payload. The group uses double extortion, demanding payment for decryption and publishing information about victims that refuse to pay.
Ransomware operator claiming to analyze stolen data for legal/commercial/insider-information value to increase leverage and reputational harm against victims.
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.