Rule History

SID: 2025062 • Source: et/open

Versions (2)

Version DetailsCurrent

Rev: 4 • Nov 27, 2017, 12:00 PM

Message:

ET WEB_CLIENT PowerShell call in script 2

Rule:

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT PowerShell call in script 2"; flow:from_server,established; file_data; content:"vbscript"; nocase; content:"shell"; nocase; pcre:"/^\W/Rs"; content:"powershell.exe"; fast_pattern; content:"<script"; pcre:"/^((?!<\/script>).)+?powershell\.exe/Rsi"; classtype:attempted-user; sid:2025062; rev:4; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2017_11_27, deployment Perimeter, performance_impact Low, signature_severity Major, tag Web_Client_Attacks, updated_at 2020_08_19;)

Created:

Nov 27, 2017, 12:00 PM

Updated:

Aug 19, 2020, 12:00 PM

DB Created:

Nov 27, 2017, 12:00 PM

DB Updated:

May 31, 2024, 9:00 PM

Filename:

rules/emerging-web_client.rules