""ET CURRENT_EVENTS Possible Successful Phish - Generic Status Messages Sept 11 2015""

SID: 2021761

Revision: 4

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2015_09_11, deployment Perimeter, signature_severity Critical, tag Phishing, updated_at 2017_08_17, 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,to_client

Contents:

  • Value: "|22|ajax_timeout|22 20 3A 20 22|"

  • Value: "Authenticating|20 E2 80 A6 22 2C|"

  • Value: "|22|expired_session|22 20 3A 20 22|Your"

  • Value: "|22|prevented_xfer|22 20 3A 20 22|The session"

  • Value: "successful. Redirecting|20 E2 80 A6 22 2C|"

  • Value: "|22|token_incorrect|22 20 3A 20 22|The security"

Within:

PCRE:

Special Options:

  • file_data

  • fast_pattern

source