""ET TROJAN Win32/Kribat-A Downloader Activity""

SID: 2027024

Revision: 4

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_03_01, deployment Perimeter, former_category TROJAN, performance_impact Low, signature_severity Major, updated_at 2022_05_03

Reference:

  • md5

  • 78184ca66e1774598b96188f977f0687

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: ".php"

  • Value: "User-Agent|3a 20|Command|0d 0a|"

  • Value: !"Accept"

  • Value: !"Referer|3a|"

Within:

PCRE: "/.php$/U"

Special Options:

  • http_method

  • http_uri

  • http_header

  • fast_pattern

  • http_header

  • http_header

source