""ET INFO Webhook/HTTP Request Inspection Service Domain (webhook .site in TLS SNI)""
SID: 2034634
Revision: 3
Class Type: misc-activity
Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_12_08, deployment Perimeter, performance_impact Low, confidence High, signature_severity Informational, updated_at 2023_08_25, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1567, mitre_technique_name Exfiltration_Over_Web_Service
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: 443
Flow: established,to_server
Contents:
-
Value: "|16|" Depth: 1
-
Value: "|01|"
-
Value: "|00 00 0c|webhook.site"
Within:
PCRE:
Special Options:
- nocase