""ET INFO PowerShell NonInteractive Command Common In Powershell Stagers""

SID: 2026991

Revision: 5

Class Type: bad-unknown

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2019_02_28, deployment alert_only, performance_impact Low, confidence Low, signature_severity Major, tag PowerShell, updated_at 2023_04_25, reviewed_at 2023_10_11

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: !"|22|manifestVersion|22|"

  • Value: !"<html"

  • Value: !"|22 7d 2c|"

  • Value: "powershell"

  • Value: "-noni"

Within:

PCRE:

Special Options:

  • file_data

  • fast_pattern

  • nocase

  • nocase

source