""ET EXPLOIT Unknown Vulnerability Exploit Attempt (Possible Mirai Activity)""

SID: 2033273

Revision: 1

Class Type: attempted-admin

Metadata: attack_target Server, created_at 2021_07_07, deployment Perimeter, deployment Internal, signature_severity Major, tag Exploit, updated_at 2021_07_07, mitre_tactic_id TA0001, mitre_tactic_name Initial_Access, mitre_technique_id T1190, mitre_technique_name Exploit_Public_Facing_Application

Reference:

Protocol: tcp

Source Network: $EXTERNAL_NET

Source Port: any

Destination Network: [$HOME_NET,$HTTP_SERVERS]

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "/cgi-bin/" Depth: 9

  • Value: "key=|27 3b 60|" Depth: 7

  • Value: "wget"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_client_body

  • http_client_body

source