stac3150
STAC3150 is a threat cluster tracked by Sophos since September 24, 2025. The cluster has been linked to campaigns targeting users in Brazil in which banking trojans were spread via WhatsApp Web. Reported malware associated with these campaigns includes Casbaneiro and Astaroth. Sophos said the lure delivers a ZIP archive containing a malicious VBS or HTA file. K7 Security Labs also tracked the WhatsApp malware campaigns in Brazil. No additional attribution or nation-state linkage is stated in the provided content. Known alias: stac3150.
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Targeting
Who, where, and (when attributed) which flag flies behind the operation. Pulled from open-source reporting and Mallory's analyst review.
Who they target
Sectors the actor has been observed targeting.
- finance
Associated malware families
1 malware family attributed to this actor across reporting.
Recent activity
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
The version that knows your environment.
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.