""ET INFO HTTP GET Request for nss3.dll - Possible Infostealer Activity""

SID: 2044305

Revision: 1

Class Type: suspicious-filename-detect

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_02_22, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence Medium, signature_severity Informational, updated_at 2023_02_22

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "GET"

  • Value: "nss3.dll"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • fast_pattern

source