Rule History

SID: 2032521 • Source: et/open

Versions (3)

Version DetailsCurrent

Rev: 2 • Apr 6, 2021, 12:00 PM

Message:

ET WEB_CLIENT Generic Webshell Accessed on External Compromised Server

Rule:

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET WEB_CLIENT Generic Webshell Accessed on External Compromised Server"; flow:established,to_client; file.data; content:"FoxWSO v1</title>"; fast_pattern; nocase; content:"function encrypt("; distance:0; classtype:web-application-attack; sid:2032521; rev:2; metadata:affected_product Web_Server_Applications, attack_target Web_Server, created_at 2021_04_06, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_04_06;)

Created:

Apr 6, 2021, 12:00 PM

Updated:

Apr 6, 2021, 12:00 PM

DB Created:

Sep 21, 2024, 3:00 AM

DB Updated:

Sep 12, 2025, 9:34 PM

Filename:

rules/emerging-web_client.rules