""ET CURRENT_EVENTS Possible Base64 Obfuscated Phishing Landing 2015-11-30""

SID: 2031906

Revision: 4

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2015_11_30, deployment Perimeter, performance_impact Moderate, signature_severity Major, tag Phishing, updated_at 2024_04_22, mitre_tactic_id TA0005, mitre_tactic_name Defense_Evasion, mitre_technique_id T1027, mitre_technique_name Obfuscated_Files_or_Information

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,from_server

Contents:

• Value: "200"

• Value: "Content-Encoding|3a 20|gzip"

• Value: "Content-Type|3a 20|text/html"

• Value: "<meta http-equiv=|22|Refresh|22|"

• Value: "content=|22|0|3b 20|URL="

• Value: "data|3a|text/html|3b|base64,"

Within: 25

PCRE:

Special Options:

• http_stat_code

• http_header

• http_header

• file_data

• nocase

• nocase

• nocase

source