""ET TROJAN Unknown Powershell Malvertising Payload CnC Checkin""

SID: 2051122

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state TLSEncrypt, created_at 2024_02_27, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence High, signature_severity Major, updated_at 2024_02_27

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: "/online/tunupd.php?f=" Depth: 21

Within:

PCRE:

Special Options:

• http_method

• http_uri

• fast_pattern

source