""ET WEB_CLIENT Hex Obfuscation of charCodeAt % Encoding""

SID: 2012043

Revision: 2

Class Type: bad-unknown

Metadata: affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2010_12_11, deployment Perimeter, signature_severity Major, tag Web_Client_Attacks, updated_at 2010_12_15

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "%63%68%61%72%43%6f%64%65%41%74"

Within:

PCRE:

Special Options:

  • nocase

source