""ET WEB_SERVER Possible Encrypted Webshell in POST""

SID: 2017641

Revision: 2

Class Type: bad-unknown

Metadata: created_at 2013_10_28, updated_at 2013_10_28

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: any

Destination Network: $HTTP_SERVERS

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "eval"

  • Value: "mcrypt_decrypt"

Within:

PCRE:

Special Options:

  • http_method

  • http_client_body

  • http_client_body

source