""ET CURRENT_EVENTS Obfuscated Javascript from Generic Phishkit""

SID: 2049692

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2023_12_14, deployment Perimeter, deployment SSLDecrypt, signature_severity Major, updated_at 2024_02_07, 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,to_client

Contents:

  • Value: "200"

  • Value: "var|20|" Depth: 4

  • Value: "for(i=0|3b|"

  • Value: "Math.pow("

  • Value: "String.fromCharCode(Math.floor("

  • Value: "document.write("

  • Value: ")|3b|"

Within:

PCRE: "/^(?P[a-z]{1,50})\x20\x3d\x20new\x20Array\x3b\x0a((?P=arrayName)\x5b){1,50}/R"

Special Options:

  • http_stat_code

  • file_data

  • fast_pattern

source