""ET CURRENT_EVENTS Observed Possible Phishing 2021-06-29""
SID: 2033218
Revision: 1
Class Type: trojan-activity
Metadata: attack_target Client_Endpoint, created_at 2021_07_01, deployment Perimeter, former_category PHISHING, signature_severity Critical, tag Phishing, updated_at 2021_09_08, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1566, mitre_technique_name Phishing
Reference:
Protocol: tcp
Source Network: $EXTERNAL_NET
Source Port: $HTTP_PORTS
Destination Network: $HOME_NET
Destination Port: any
Flow: established,from_server
Contents:
-
Value: "Webmail Login"
-
Value: "action|3d 22|process.php|22|"
-
Value: "method|3d 22|post|22|"
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Value: "target|3d 22 5f|top|22|"
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Value: "style|3d 22|visibility|3a 22|>"
Within:
PCRE:
Special Options:
-
file_data
-
fast_pattern