""ET TROJAN Win32/Suspected Reverse Shell Connection""

SID: 2034945

Revision: 2

Class Type: trojan-activity

Metadata: attack_target Client_Endpoint, created_at 2022_01_19, deployment Perimeter, signature_severity Major, updated_at 2023_12_26

Reference:

  • md5

  • 039d8e77b65faae44d5e7e39d4cc9c59

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "Microsoft|20|Windows|20|"

  • Value: "|5b|Version|20|"

  • Value: "|5d|"

  • Value: "|20|Microsoft|20|Corp"

  • Value: "|43 3a 5c|"

  • Value: "|3e|"

  • Value: !"Host"

Within:

PCRE:

Special Options:

  • fast_pattern

source