SharpHound Recon Sessions
Detects remote RPC calls useb by SharpHound to map remote connections and local group membership.
Sigma rule (View on GitHub)
1title: SharpHound Recon Sessions
2id: 6d580420-ff3f-4e0e-b6b0-41b90c787e28
3status: test
4description: Detects remote RPC calls useb by SharpHound to map remote connections and local group membership.
5references:
6 - https://learn.microsoft.com/en-us/openspecs/windows_protocols/ms-srvs/02b1f559-fda2-4ba3-94c2-806eb2777183
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.discovery
15 - attack.t1033
16logsource:
17 product: rpc_firewall
18 category: application
19 definition: 'Requirements: install and apply the RPC Firewall to all processes with "audit:true action:block uuid:4b324fc8-1670-01d3-1278-5a47bf6ee188 opnum:12'
20detection:
21 selection:
22 EventLog: RPCFW
23 EventID: 3
24 InterfaceUuid: 4b324fc8-1670-01d3-1278-5a47bf6ee188
25 OpNum: 12
26 condition: selection
27falsepositives:
28 - Unknown
29level: high
References
-
The NetrSessionEnum method MUST return information about sessions that are established on a server or return an error
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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