Around April 2022, security researchers tracked a significant spike in malicious emails using password-protected .7z archives. : Often delivered the Emotet Trojan.
The SANS "Handler's Diary" provided real-time analysis in April 2022. They detailed how attackers switched to .7z files to bypass email filters that were previously blocking .zip files. 2. Brad Duncan's Malware-Traffic-Analysis This is the "gold standard" for this specific file. : PCAP files and malware samples. Link : Malware-Traffic-Analysis.net APRIL_10-04-2022.7z
📌 : If you actually have this file, do not extract it on a host machine. It is almost certainly a live malware sample. They detailed how attackers switched to
: It marked a shift where attackers used password-protected archives to hide the payload from automated sandbox analysis. : PCAP files and malware samples
: April 2022 was a peak period for Emotet before its subsequent infrastructure takeovers and shifts.
: It provides the exact infection chain, showing how the .7z file leads to a DLL execution via regsvr32.exe . 3. Trend Micro / Palo Alto Unit 42