Both firms published blogs in early 2022 regarding the resurgence of . Unit 42 : Look for their research on Emotet's evolution .
đź“Ś : If you actually have this file, do not extract it on a host machine. It is almost certainly a live malware sample. APRIL_10-04-2022.7z
: They explain why the hackers used the .7z format (it has a higher compression ratio and was less scrutinized by legacy scanners). đź’ˇ Why this file is "Interesting" Both firms published blogs in early 2022 regarding
: April 2022 was a peak period for Emotet before its subsequent infrastructure takeovers and shifts. It is almost certainly a live malware sample
: 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
: Used "thread hijacking" (replying to old email chains). File Name : Followed the pattern [Month]_[Date]-[Year].7z . Lure : Contained a malicious .lnk or .vbs file inside. đź“ť Recommended Blog Coverage
: It marked a shift where attackers used password-protected archives to hide the payload from automated sandbox analysis.