""ET TROJAN OSX/SHLAYER CnC Checkin""

SID: 2030231

Revision: 6

Class Type: trojan-activity

Metadata: affected_product Mac_OSX, attack_target Client_Endpoint, created_at 2020_05_29, deployment Perimeter, performance_impact Moderate, signature_severity Major, updated_at 2024_04_04

Reference:

Protocol: tcp

Source Network: $HOME_NET

Source Port: any

Destination Network: $EXTERNAL_NET

Destination Port: $HTTP_PORTS

Flow: established,to_server

Contents:

  • Value: "POST http://"

  • Value: "cs=" Depth: 3

  • Value: !"User-Agent"

  • Value: !"Referer"

  • Value: "Content-Type|3a 20|application/x-www-form-urlencoded|0d 0a|"

Within:

PCRE: "/^Host[^\r\n]+\r\nContent-Length[^\r\n]+\r\nContent-Type[^\r\n]+\r\nAccept[^\r\n]+\r\nConnection[^\r\n]+\r\n\r\n$/H"

Special Options:

  • fast_pattern

  • http_client_body

  • http_header

  • http_header

  • http_header

source