""ET ATTACK_RESPONSE PowerShell Internet Connectivity Check via Network GUID Inbound""

SID: 2027394

Revision: 3

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2019_05_29, deployment Perimeter, performance_impact Low, signature_severity Major, tag PowerShell, tag T1086, updated_at 2023_04_20

Reference:

• md5

• 036180b14dce975a055e62902e5f3567

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

• Value: "200"

• Value: !"<html"

• Value: "|3a 3a|GetTypeFromCLSID"

• Value: "|5b|Guid|5d 27 7b|DCB00C01-570F-4A9B-8D69-199FDBA5723B|7d 27 29 29|.IsConnectedToInternet"

Within:

PCRE:

Special Options:

• http_stat_code

• file_data

• nocase

• nocase

source