""ET TROJAN Zebrocy Backdoor CnC Activity""

SID: 2026527

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_10_19, deployment Perimeter, signature_severity Major, tag Zebrocy, updated_at 2018_10_19

Reference:

• md5

• 961e79a33f432ea96d2c8bf9eb010006

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: to_server,established

Contents:

• Value: "POST"

• Value: ".php?"

• Value: "User-Agent|3a 20|Mozilla v5.1 (Windows NT 6.1|3b 20|rv|3a|6.0.1) Gecko/20100101 Firefox/6.0.1"

• Value: "%0D%0AHost%20Name|3a|"

Within:

PCRE: "/^Host\x3a\x20(?:\d{1,3}.)\d{1,3}/Hmi"

Special Options:

• http_method

• http_uri

• http_header

• http_client_body

source