Loading threat actor…
TA399 is an India-aligned threat cluster tracked by Proofpoint as Sidewinder. According to the provided content, TA399 shares lure themes and compromised accounts with TA395 (Frantic Tiger), and the two clusters sometimes target the same individuals. The reported overlaps suggest possible shared resourcing and/or coordinated tasking across some India-aligned clusters. No additional high-confidence details on TA399’s specific malware, victimology, or sub-groups are directly provided in the content. Known alias: Sidewinder.
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.
Attributed origin per open-source reporting.
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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.