""ET TROJAN W32/Zbot.InfoStealer WindowsUpdate Connectivity Check With Opera UA""

SID: 2018419

Revision: 5

Class Type: trojan-activity

Metadata: created_at 2014_04_25, updated_at 2014_05_13

Reference:

• md5

• aa696180cd0369e264ed8e9137a4f254

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

• Value: "GET"

• Value: "User-Agent|3A| Opera/9.25 (Windows NT 6.0|3B| U|3B|"

• Value: "Host|3A| windowsupdate.microsoft.com"

• Value: "Connection|3A| Close"

• Value: !"Referer|3A|"

• Value: !"Accept"

Within:

PCRE:

Special Options:

• http_method

• http_header

• http_header

• http_header

• http_header

• http_header

source