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Cyber Stealer is a stealer malware family identified by eSentire’s Threat Response Unit (TRU), first seen in May 2025. The available content characterizes it as a new, feature-rich credential/data-stealing capability, but does not attribute it to a specific named threat actor, country, or subgroup, nor does it provide confirmed targeting details, victimology, or a distinct TTP set beyond its role as a stealer/credential-harvesting malware.
Mallory correlates actor tradecraft and target patterns against your stack, your sector, and your geography. See overlap before they land.
6 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
Cyber Stealer is a new stealer malware first identified in May 2025, notable for its feature-rich design.
Cyber Stealer is a newly identified malware family focused on stealing information, with rapid feature development driven by competitive pressures among malware developers.
Cyber Stealer is a new stealer malware first identified in May 2025, notable for its feature-rich design.
Cyber Stealer is a newly identified malware family focused on stealing information, with rapid feature development driven by competitive pressures among malware developers.
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.