Audit 7z.exe executions, especially those involving temporary or public directories.
Restrict the use of administrator accounts and audit any use of built-in Windows tools for non-administrative tasks. SS-Bet-001_s.7z
This and similar files are frequently found in "staging" directories such as: C:\Windows\Temp\ C:\Users\Public\ C:\Perflogs\ . Forensic Indicators Audit 7z