""ET TROJAN SiameseKitten/Lyceum/Hexane MSIL/Shark CnC Activity (Beacon)""

SID: 2034367

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 2021_11_09, deployment Perimeter, malware_family Shark, performance_impact Low, signature_severity Major, tag LYCEUM, updated_at 2021_11_09

Reference:

• Link

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: "s6rt&qi="

Within:

PCRE:

Special Options:

• http_method

• http_uri

• fast_pattern

source