Hackers now use ZIP file concatenation to evade detection

Hackers are targeting Windows machines using the ZIP file concatenation technique to deliver malicious payloads in compressed archives without security solutions detecting them.

The technique exploits the different methods ZIP parsers and archive managers handle concatenated ZIP files.

This new trend was spotted by Perception Point, who discovered a a concatentated ZIP archive hiding a trojan while analyzing a phishing attack that lured users with a fake shipping notice.