""ET CURRENT_EVENTS CSharp SMB Scanner Assembly in PowerShell Inbound M1""

SID: 2027336

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2019_05_08, deployment Perimeter, deployment Internal, performance_impact Low, signature_severity Major, updated_at 2019_05_08

Reference:

  • md5

  • e5a9c413812b5217ef0da962668e9651

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,from_server

Contents:

  • Value: "200"

  • Value: "=|20|ReadSmbResponse|28|"

  • Value: "|20|==|20|0x72|20|&&|20|"

  • Value: "|20|==|20|00"

Within: 400

PCRE:

Special Options:

  • http_stat_code

  • file_data

  • fast_pattern

source