""ET WEB_CLIENT Microsoft OLE Compound File Magic Bytes Flowbit Set""

SID: 2012520

Revision: 7

Class Type: protocol-command-decode

Metadata: affected_product Web_Browsers, affected_product Web_Browser_Plugins, attack_target Client_Endpoint, created_at 2010_12_15, deployment Perimeter, signature_severity Major, tag Web_Client_Attacks, updated_at 2012_10_22

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: to_client,established

Contents:

  • Value: "|d0 cf 11 e0 a1 b1 1a e1|"

  • Value: !".msi"

Within: 8

PCRE:

Special Options:

  • file_data

source