""ET TROJAN Possible FoggyWeb Backdoor Server Response""

SID: 2034036

Revision: 2

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: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_client

Contents:

• Value: "200"

• Value: "Content-Type|3a 20|image/webp|0d 0a|"

• Value: "|52 49 46 46|" Depth: 4

• Value: "|57 45 42 50 56 50 38 20|"

• Value: "|10 32 00 9d 01 2a|"

Within: 6

PCRE: "/^[\x80|\x40]\x00[\x80|\x40]\x00\x00\x00/R"

Special Options:

• http_stat_code

• http_header

• file_data

• fast_pattern

source