""ET TROJAN Suspicious User-Agent build - possibly Delf/Troxen/Zema""

SID: 2014116

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Any, attack_target Client_Endpoint, created_at 2012_01_12, deployment Perimeter, signature_severity Major, tag User_Agent, updated_at 2012_06_21

Reference:

• md5

• 3d18363a20882bd74ae7e0f68d3ed8ef

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

• Value: "User-Agent|3a| build"

Within:

PCRE: "/User-Agent\x3a build\d/H"

Special Options:

• http_header

source