IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
RPC (Remote Procedure Call) to the Internet
editRPC (Remote Procedure Call) to the Internet
editThis rule detects network events that may indicate the use of RPC traffic to 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: None
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Elastic
- Host
- Network
- Threat Detection
- Initial Access
version: 9
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule query
editevent.category:(network or network_traffic) and network.transport:tcp and (destination.port:135 or event.dataset:zeek.dce_rpc) and
source.ip:(
10.0.0.0/8 or
172.16.0.0/12 or
192.168.0.0/16
) and
not destination.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
192.0.0.0/24 or
192.0.0.0/29 or
192.0.0.8/32 or
192.0.0.9/32 or
192.0.0.10/32 or
192.0.0.170/32 or
192.0.0.171/32 or
192.0.2.0/24 or
192.31.196.0/24 or
192.52.193.0/24 or
192.168.0.0/16 or
192.88.99.0/24 or
224.0.0.0/4 or
100.64.0.0/10 or
192.175.48.0/24 or
198.18.0.0/15 or
198.51.100.0/24 or
203.0.113.0/24 or
240.0.0.0/4 or
"::1" or
"FE80::/10" or
"FF00::/8"
)
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Initial Access
- ID: TA0001
- Reference URL: https://attack.mitre.org/tactics/TA0001/
-
Technique:
- Name: Exploit Public-Facing Application
- ID: T1190
- Reference URL: https://attack.mitre.org/techniques/T1190/