Trend Research is continuously tracking the aggressive malware campaign it identified as Water Saci, which uses WhatsApp as its primary infection vector. In our previous blog, the Water Saci campaign, with its malware identified as SORVEPOTEL, automatically distributes the same malicious ZIP file to all contacts and groups associated with the victim’s compromised account for rapid propagation.
More recent activity points to the emergence of a new infection chain that diverges from previously discussed .NET-based methods. On October 8, 2025, Trend Research analysis revealed file downloads originating from WhatsApp web sessions.
Read more…
Source: Trend Micro
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