""ET CURRENT_EVENTS Possible PurpleFox EK Framework URI Struct Jpg Request""

SID: 2031466

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_12_30, deployment Perimeter, deployment SSLDecrypt, signature_severity Major, tag Exploit_Kit, updated_at 2020_12_30

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

• Value: "GET"

• Value: "rawcdn.githack.com|0d 0a|"

• Value: ".jpg"

Within:

PCRE: "/^\/(?!(?:[a-z]{16}|[0-9]{16}))[a-zA-Z0-9]{16}\/[a-zA-Z0-9]{16}\/[a-f0-9]{40}\/[a-zA-Z0-9]+.jpg$/U"

Special Options:

• http_method

• http_header

• fast_pattern

• http_uri

source