""ET WEB_CLIENT Suspicious Redirect - Possible Phishing May 25 2016""

SID: 2031567

Revision: 4

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2016_05_25, deployment Perimeter, signature_severity Critical, tag Phishing, updated_at 2018_01_18, 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: from_server,established

Contents:

  • Value: "302"

  • Value: "Location|3a 20|"

  • Value: ".php?email="

  • Value: !"unsubscribe"

  • Value: !"Location|3a 20|http|3a|//lastpass.com/"

Within:

PCRE: "/Location\x3a\x20[^\r\n]+.php\?email=/Hi"

Special Options:

  • http_stat_code

  • http_header

  • fast_pattern

  • http_header

  • http_header

  • http_header

source