""ET EXPLOIT [CISA AA21-336A] Zoho ManageEngine ServiceDesk Possible Exploitation Activity (CVE-2021-44077)""

SID: 2034577

Revision: 2

Class Type: attempted-admin

Metadata: attack_target Server, created_at 2021_12_03, cve CVE_2021_44077, deployment Perimeter, deployment Internal, signature_severity Major, tag Exploit, tag possible_exploitation, updated_at 2021_12_09, 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: any

Source Port: any

Destination Network: [$HOME_NET,$HTTP_SERVERS]

Destination Port: any

Flow: established,to_server

Contents:

  • Value: "POST"

  • Value: "/RestAPI/ImportTechnicians"

  • Value: "filename=|22|msiexec.exe|22|"

Within:

PCRE:

Special Options:

  • http_method

  • http_uri

  • fast_pattern

  • http_client_body

source