""ET POLICY Observed nc (netcat) EXE Inbound""

SID: 2033890

Revision: 1

Class Type: policy-violation

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_09_02, deployment Perimeter, signature_severity Informational, updated_at 2021_09_02, reviewed_at 2024_05_07

Reference:

  • md5

  • e0db1d3d47e312ef62e5b0c74dceafe5

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,from_server

Contents:

  • Value: "MZ" Depth: 10

  • Value: "!This program"

  • Value: "www.vulnwatch.org/netcat/"

  • Value: "nc [-options]"

  • Value: "nc -l -p port"

Within:

PCRE:

Special Options:

  • file_data

  • fast_pattern

source