""ET TROJAN Win32/Kryptik.HCZR Variant Initial Checkin""

SID: 2030054

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 2020_04_29, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, signature_severity Major, updated_at 2020_04_29

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: "/?wqasd=" Depth: 8

  • Value: "&qrjatyd=imofugclqu"

  • Value: !"User-Agent"

  • Value: !"Referer"

  • Value: !"Connection"

Within:

PCRE: "/Host\x3a\x20[^\r\n]+\r\n\r\n$/H"

Special Options:

  • http_method

  • http_uri

  • http_uri

  • fast_pattern

  • http_header

  • http_header

  • http_header

source