IMPORTANT: No additional bug fixes or documentation updates will be released for this version. For the latest information, see the current release documentation.
« RDP Enabled via Registry RPC (Remote Procedure Call) to the Internet »
Elastic Docs ›Elastic Security Solution [7.11] ›Detections and Alerts ›Prebuilt rule reference

RPC (Remote Procedure Call) from the Internet

edit

RPC (Remote Procedure Call) from the Internet

edit

Detects network events that may indicate the use of RPC traffic from the Internet. RPC is commonly used by system administrators to remotely control a system for maintenance or to use shared resources. It should almost never be directly exposed to the Internet, as it is frequently targeted and exploited by threat actors as an initial access or back-door vector.

Rule type: query

Rule indices:

  • filebeat-*
  • packetbeat-*
  • logs-endpoint.events.*

Severity: high

Risk score: 73

Runs every: 5 minutes

Searches indices from: now-6m (Date Math format, see also Additional look-back time)

Maximum alerts per execution: 100

Tags:

  • Elastic
  • Host
  • Network
  • Threat Detection
  • Initial Access

Version: 7 (version history)

Added (Elastic Stack release): 7.6.0

Last modified (Elastic Stack release): 7.11.2

Rule authors: Elastic

Rule license: Elastic License

Rule query

edit
event.category:(network or network_traffic) and network.transport:tcp
and (destination.port:135 or event.dataset:zeek.dce_rpc) and not
source.ip:( 10.0.0.0/8 or 127.0.0.0/8 or 169.254.0.0/16 or
172.16.0.0/12 or 192.168.0.0/16 or 224.0.0.0/4 or "::1" or "FE80::/10"
or "FF00::/8" ) and destination.ip:( 10.0.0.0/8 or 172.16.0.0/12 or
192.168.0.0/16 )

Threat mapping

edit

Framework: MITRE ATT&CKTM

Rule version history

edit
Version 7 (7.11.2 release)
  • Formatting only
Version 6 (7.11.0 release)

  • Updated query, changed from:

    event.category:(network or network_traffic) and network.transport:tcp
and (destination.port:135 or event.dataset:zeek.dce_rpc) and not
source.ip:(10.0.0.0/8 or 127.0.0.0/8 or 172.16.0.0/12 or
192.168.0.0/16 or "::1") and destination.ip:(10.0.0.0/8 or
172.16.0.0/12 or 192.168.0.0/16)
Version 5 (7.10.0 release)
  • Formatting only
Version 4 (7.9.0 release)

  • Updated query, changed from:

    network.transport:tcp and destination.port:135 and not
source.ip:(10.0.0.0/8 or 127.0.0.0/8 or 172.16.0.0/12 or
192.168.0.0/16 or "::1") and destination.ip:(10.0.0.0/8 or
172.16.0.0/12 or 192.168.0.0/16)
Version 3 (7.7.0 release)

  • Updated query, changed from:

    network.transport: tcp and destination.port: 135 and (
network.direction: inbound or ( not source.ip: (10.0.0.0/8 or
172.16.0.0/12 or 192.168.0.0/16) and destination.ip: (10.0.0.0/8 or
172.16.0.0/12 or 192.168.0.0/16) ) )
Version 2 (7.6.1 release)
  • Removed auditbeat-*, packetbeat-*, and winlogbeat-* from the rule indices.
« RDP Enabled via Registry RPC (Remote Procedure Call) to the Internet »