""ET CURRENT_EVENTS Possible Protonmail Phishing Domain in DNS Query""
SID: 2027772
Revision: 2
Class Type: bad-unknown
Metadata: affected_product Web_Browsers, attack_target Client_Endpoint, created_at 2019_08_01, deployment Perimeter, signature_severity Minor, updated_at 2019_08_01
Reference:
Protocol: udp
Source Network: $HOME_NET
Source Port: any
Destination Network: any
Destination Port: 53
Flow:
Contents:
-
Value: "|01|" Depth: 1 Offset: 2
-
Value: "|00 01 00 00 00 00 00|"
-
Value: "|0a|protonmail|02|sh|00|"
Within: 7
PCRE:
Special Options:
- fast_pattern