Post #4190010

Zscaler ThreatLabz examines four GoGRPC variants from a likely initial access broker for ransomware that leverages vishing techniques through Microsoft Teams. C2 communication protocols & the additional malware tools observed are also analysed. https://www.zscaler.com/blogs/security-research/helpdesk-hijackers-teams-vishing-quick-assist-and-gogrpc-backdoor