""ET TROJAN Kronos Checkin""

SID: 2020080

Revision: 1

Class Type: trojan-activity

Metadata: created_at 2014_12_29, updated_at 2014_12_29

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"

• Value: !"Referer|3a|"

• Value: !"Accept"

• Value: "POST"

• Value: !"Content-Type"

• Value: "Content-Length|3a 20|74|0d 0a|"

Within:

PCRE: "/^(?P.).{33}(?P=v1).{9}(?P.)(?:.{4}(?P=v2)){3}/Ps"

Special Options:

• http_uri

• http_header

• http_header

• http_method

• http_header

• http_header

source