""ET CURRENT_EVENTS Wide HTA with PowerShell Execution Inbound""

SID: 2027335

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, performance_impact Low, signature_severity Major, tag PowerShell, tag T1086, 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: "Content-Type|3a 20|application/hta"

  • Value: "W|00|s|00|c|00|r|00|i|00|p|00|t"

  • Value: "S|00|h|00|e|00|l|00|l|00|"

  • Value: "p|00|o|00|w|00|e|00|r|00|s|00|h|00|e|00|l|00|l|00|"

  • Value: "h|00|i|00|d|00|d|00|e|00|n"

Within: 200

PCRE:

Special Options:

  • http_stat_code

  • http_header

  • file_data

  • nocase

  • nocase

  • nocase

  • fast_pattern

source