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STAC3150 is a tracked cybercrime cluster associated with malware campaigns targeting users in Brazil via WhatsApp-based social engineering. The activity has been linked to the distribution of banking trojans, including Casbaneiro and Astaroth, indicating a focus on credential theft and financial fraud. Observed delivery methods include lure messages that lead victims to download archive files containing malicious script-based launchers such as VBS or HTA, which then initiate the infection chain. The actor’s tradecraft centers on initial access through messaging-platform lures and subsequent deployment of banking malware capable of stealing sensitive information from infected systems. STAC3150 is tracked as a distinct cluster rather than a formally attributed nation-state group, and the available information supports financially motivated cybercriminal activity targeting Brazilian users.
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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.
1 malware family attributed to this actor across reporting.
1 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
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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.
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