Learn Sigma — Reading a Detection Rule for Bitsadmin Abuse
Abstract A walkthrough of the LetsDefend Learn Sigma lab. The goal isn’t to run a tool, but to read a real Sigma rule — proc_creation_win_bitsadmin_download.yml — and understand how its sections (logsource, selection, condition, fields, tags) work together to detect an attacker abusing the legitimate Windows utility bitsadmin.exe to download malicious payloads. Understanding how a detection rule is built is what lets a SOC analyst know why an alert fired, judge false positives, and eventually write rules of their own. ...