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

SID: 2028979

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 2019_11_14, deployment Perimeter, deployment SSLDecrypt, signature_severity Major, updated_at 2019_11_14

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|"

Within:

PCRE: "/^\/(?!(?:[a-z]{16}|[0-9]{16}))[a-zA-Z0-9]{16}\/[a-z.-]+\/[a-f0-9]{40}\/[a-z.-]+\/[a-z0-9]+.htm$/U"

Special Options:

• http_method

• http_header

• fast_pattern

source