PowerShell Script for Security Software Discovery
This rule detects PowerShell scripts that attempt to discover security software installed on a system. Specifically, it looks for the use of 'Get-Process' (or its alias 'gps') piped to 'Where-Object' (or its alias '?') to filter processes based on keywords commonly associated with security products such as 'avira', 'carbonblack', 'cylance', 'defender', 'kaspersky', 'malware', 'sentinel', 'symantec', and 'virus'. The filtering can be applied to process properties like Company, Description, Name, Path, or Product. This activity is indicative of an adversary attempting to enumerate defensive tools present on the system.
Sigma
