""ET TROJAN [PTsecurity] PS/TrojanDownloader.Agent.NNR XORed Zip payload (key 0x91)""

SID: 2025583

Revision: 3

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2018_05_23, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2018_07_10

Reference:

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: "|c1 da 92 95 85 91 91 99 99 91|" Depth: 10

Within:

PCRE:

Special Options:

  • http_stat_code

  • file_data

  • fast_pattern

source