""ET TROJAN Win32/Krypton Stealer CnC Checkin""

SID: 2027313

Revision: 2

Class Type: trojan-activity

Metadata: affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, created_at 2019_05_03, deployment Perimeter, malware_family Krypton, performance_impact Low, signature_severity Major, tag Stealer, updated_at 2019_05_03

Reference:

  • md5

  • 825afad02d07063689b7b59e8cf46809

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: ".php"

  • Value: "id=" Depth: 3

  • Value: "&message="

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

Within:

PCRE: "/.php$/U"

Special Options:

  • http_method

  • http_uri

  • http_client_body

  • http_client_body

  • fast_pattern

  • http_header

source