""ET TROJAN GET to Google with specific HTTP lib likely Cycbot/Bifrose/Kryptic checking Internet connection""

SID: 2012645

Revision: 4

Class Type: trojan-activity

Metadata: created_at 2011_04_06, updated_at 2011_11_08

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "GET|20|/|20|HTTP/1."

  • Value: "|0d 0a|Connection|3a 20|close|0d 0a|Host|3a 20|www.google.com|0d 0a|Pragma|3a 20|no-cache|0d 0a 0d 0a|"

Within: 65

PCRE:

Special Options:

source