""ET WEB_CLIENT SUSPICIOUS Possible automated connectivity check (www.bing.com)""

SID: 2018432

Revision: 2

Class Type: bad-unknown

Metadata: affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2014_04_30, deployment Perimeter, performance_impact Moderate, signature_severity Major, tag Web_Client_Attacks, updated_at 2024_04_30, reviewed_at 2024_03_06

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: 80

Flow: established,to_server

Contents:

  • Value: "GET / HTTP/1."

  • Value: "|0d 0a|Host|3a 20|www.bing.com|0d 0a 0d 0a|"

Within: 24

PCRE:

Special Options:

source