Rundll Exe 7z (EXCLUSIVE | SUMMARY)

rundll32.exe 7z.dll,Extract C:\Path\To\Archive.7z C:\Path\To\Extract

If you see:

Security researchers often flag the use of rundll32.exe to launch non-standard DLLs as a suspicious activity . Attackers sometimes hide malicious code inside a file named something like 7z.dll or use legitimate 7-Zip components to compress and exfiltrate data. rundll exe 7z

Some malware families (e.g., Emotet, IcedID) have used fake 7-Zip DLLs loaded via rundll32.exe to evade detection. They name their malicious DLL as 7z.dll but place it in %AppData% or %Temp% . rundll32