""ET INFO Observed File Sharing Domain (drive .protonmail .com in TLS SNI)""
SID: 2036352
Revision: 2
Class Type: bad-unknown
Metadata: attack_target Client_Endpoint, created_at 2022_04_25, deployment Perimeter, signature_severity Informational, updated_at 2022_04_25
Reference:
Protocol: tcp
Source Network: $HOME_NET
Source Port: any
Destination Network: $EXTERNAL_NET
Destination Port: 443
Flow: established,to_server
Contents:
-
Value: "|16|"
-
Value: "|01|"
-
Value: "|00 00 14|drive.protonmail.com"
Within: 8
PCRE:
Special Options:
- fast_pattern