""ET WEB_SERVER Possible Encrypted Webshell Download""

SID: 2017640

Revision: 2

Class Type: bad-unknown

Metadata: affected_product PHP, attack_target Web_Server, created_at 2013_10_28, deployment Datacenter, performance_impact Low, signature_severity Major, updated_at 2017_01_23

Reference:

• Link

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HTTP_SERVERS

Destination Port: any

Flow: established,to_client

Contents:

• Value: "eval"

• Value: "mcrypt_decrypt"

Within: 30

PCRE:

Special Options:

• file_data

source