""ET INFO Possible Machine GUID Observed in HTTP POST""

SID: 2054968

Revision: 2

Class Type: misc-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_08_06, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Informational, updated_at 2024_08_07

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

• Value: "POST"

• Value: "&machineId="

Within:

PCRE: "/&machineId=(?:[a-z0-9]{8})\x2d(?:[a-z0-9]{4})\x2d(?:[a-z0-9]{4})\x2d(?:[a-z0-9]{4})\x2d(?:[a-z0-9]{12})/P"

Special Options:

• http_method

• http_client_body

• fast_pattern

source