Remote Server Service Abuse for Lateral Movement

Title: Remote Server Service Abuse for Lateral Movement
Status: test
Description:Detects remote RPC calls to possibly abuse remote encryption service via MS-EFSR
References:
  -https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-srvs/accf23b0-0f57-441c-9185-43041f1b0ee9
  -https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-SCMR.md
  -https://github.com/zeronetworks/rpcfirewall
  -https://zeronetworks.com/blog/stopping-lateral-movement-via-the-rpc-firewall/
Author: Sagie Dulce, Dekel Paz
Date: 2022-01-01
modified:None
Tags:

• -'attack.lateral-movement'
• -'attack.execution'
• -'attack.t1569.002'

Logsource:

• product: rpc_firewall
• category: application
• definition: Requirements: install and apply the RPC Firewall to all processes with "audit:true action:block uuid:367abb81-9844-35f1-ad32-98f038001003

Detection:
  selection:
    EventLog: 'RPCFW'
    EventID: '3'
    InterfaceUuid: '367abb81-9844-35f1-ad32-98f038001003'
  condition:selection
Falsepositives:
  -Administrative tasks on remote services
Level: high