Remote Server Service Abuse
Detects remote RPC calls to possibly abuse remote encryption service via MS-SRVS
Sigma rule (View on GitHub)
1title: Remote Server Service Abuse
2id: b6ea3cc7-542f-43ef-bbe4-980fbed444c7
3status: test
4description: Detects remote RPC calls to possibly abuse remote encryption service via MS-SRVS
5references:
6 - https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-srvs/accf23b0-0f57-441c-9185-43041f1b0ee9
7 - https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-SRVS.md
8 - https://github.com/zeronetworks/rpcfirewall
9 - https://zeronetworks.com/blog/stopping-lateral-movement-via-the-rpc-firewall/
10author: Sagie Dulce, Dekel Paz
11date: 2022-01-01
12modified: 2022-01-01
13tags:
14 - attack.lateral-movement
15logsource:
16 product: rpc_firewall
17 category: application
18 definition: 'Requirements: install and apply the RPC Firewall to all processes with "audit:true action:block uuid:4b324fc8-1670-01d3-1278-5a47bf6ee188'
19detection:
20 selection:
21 EventLog: RPCFW
22 EventID: 3
23 InterfaceUuid: 4b324fc8-1670-01d3-1278-5a47bf6ee188
24 condition: selection
25falsepositives:
26 - Legitimate remote share creation
27level: high
References
-
Specifies the Server Service Remote Protocol, which remotely enables file and printer sharing and named pipe access to the
Read More -
A repository that maps commonly used attacks using MSRPC protocols to ATT&CK - jsecurity101/MSRPC-to-ATTACK
Read More -
-
RPC Firewall is a free & open source tool, which detects and protects against RPC based attacks used by ransomware for lateral movement and other attacks
Read More
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