""ET TROJAN FoggyWeb Backdoor Incoming Request (GET)""

SID: 2034034

Revision: 1

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Server, created_at 2021_09_28, deployment Perimeter, deployment Internal, deployment SSLDecrypt, malware_family FoggyWeb, performance_impact Low, signature_severity Major, updated_at 2021_09_28

Reference:

• Link

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_server

Contents:

• Value: "GET"

• Value: "/adfs/portal/images/theme/light01/" Depth: 34

• Value: ".webp"

Within:

PCRE: "/.webp$/U"

Special Options:

• http_method

• http_uri

• http_uri

source