""ET TROJAN Possible Covenant Framework Grunt Stager HTTP Download (Grunt.GruntStager)""

SID: 2027795

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_08_04, deployment Perimeter, signature_severity Major, updated_at 2019_08_04

Reference:

• Link

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

• Value: ".CreateInstance(|27|Grunt.GruntStager|27|)"

Within:

PCRE:

Special Options:

• file_data

source