""ET TROJAN HTTPCore CnC Task Request""

SID: 2030363

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_06_19, deployment Perimeter, signature_severity Major, updated_at 2020_06_19

Reference:

• Link

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

• Value: "POST"

• Value: "/req_"

• Value: ".txt"

• Value: "User-Agent|3a 20|Mozilla/5.0 (Windows NT 10.0|3b 20|Win64|3b 20|x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/77.0.3865.120 Safari/537.36|0d 0a|"

Within: 4

PCRE: "/req_[a-f0-9]{32}.txt$/U"

Special Options:

• http_method

• http_uri

• fast_pattern

• http_uri

• http_header

source