Analysis of Emotet v4

**Emotet v4 malspam campaign analysis:** The report documents a Polish malspam campaign distributing a new Emotet v4 variant (JavaScript dropper) that uses modular payloads, AES-128-CBC encrypted HTTP communication with RSA-protected AES keys, a protobuf-like C2 protocol, and modules for stealing browser/mail credentials and sending spam; it includes C2 IPs, module hashes, YARA rules, and mitigation advice (change passwords).