""ET CURRENT_EVENTS Unknown Malicious Second Stage Download URI Struct Sept 15 2015""

SID: 2021786

Revision: 1

Class Type: trojan-activity

Metadata: created_at 2015_09_16, updated_at 2015_09_16

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: ".php?rnd="

  • Value: "&id="

  • Value: !"Referer|3a|"

Within:

PCRE: "/.php\?rnd=\d+&id=[0-9A-F]{32,}$/U"

Special Options:

  • http_uri

  • http_uri

  • http_header

source