""ET TROJAN PurpleFox Backdoor/Rootkit Download Server Response M3""

SID: 2035621

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 2022_03_28, deployment Perimeter, malware_family PurpleFox, performance_impact Moderate, signature_severity Major, updated_at 2022_03_28

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: $HTTP_PORTS

Destination Network: $HOME_NET

Destination Port: any

Flow: established,to_client

Contents:

  • Value: "200"

  • Value: "Content-Type|3a 20|application/octet-stream|0d 0a|"

  • Value: "Server|3a 20|HFS|20|"

  • Value: "|0d 0a|Content|2d|Disposition|3a 20|attachment|3b 20|filename|2a 3d|UTF|2d|8|27 27|"

  • Value: "|3b 20|filename="

  • Value: "|0d 0a|"

  • Value: "HFS_SID_=" Depth: 9

  • Value: "Rar|21 1A 07|" Depth: 6

  • Value: "|2e|dll"

Within: 150

PCRE:

Special Options:

  • http_stat_code

  • http_header

  • http_header

  • fast_pattern

  • http_header

  • http_header

  • http_header

  • http_cookie

  • file_data

source