""ET TROJAN Win32/Kryptik.GSKY CnC Checkin""

SID: 2037822

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_07_25, deployment Perimeter, performance_impact Low, signature_severity Major, updated_at 2022_10_17

Reference:

  • md5

  • 0d6118f766b0d75a5085bced64793d76

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: 1024:

Flow: established,to_server

Contents:

  • Value: "|45 36 27 18|" Depth: 4

  • Value: "|23|"

  • Value: "Api"

Within:

PCRE:

Special Options:

  • fast_pattern

source