""ET TROJAN Suspected Tunna Proxy M2 (Outbound)""

SID: 2028579

Revision: 3

Class Type: trojan-activity

Metadata: created_at 2019_09_13, deployment Perimeter, malware_family Tunna, performance_impact Low, signature_severity Major, updated_at 2020_11_11

Reference:

• Link

Protocol: tcp

Source Network: $HOME_NET

Source Port: $HTTP_PORTS

Destination Network: any

Destination Port: any

Flow: established,to_server

Contents:

• Value: "POST"

• Value: "?proxy&file&upload"

• Value: "Accept-Encoding|3a 20|gzip|0d|"

• Value: !"Referer|3a|"

Within:

PCRE: "/\?proxy&file&upload$/U"

Special Options:

• http_method

• fast_pattern

• http_uri

• http_header

• http_header

source