SharpHound Recon Sessions

 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://docs.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.t1033
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 opnum:12'
19detection:
20    selection:
21        EventLog: RPCFW
22        EventID: 3
23        InterfaceUuid: 4b324fc8-1670-01d3-1278-5a47bf6ee188
24        OpNum: 12
25    condition: selection
26falsepositives:
27    - Unknown
28level: high

References

• [MS-SRVS]: NetrSessionEnum (Opnum 12)

  

  The NetrSessionEnum method MUST return information about sessions that are established on a server or return an error code.  NET_API_STATUS

  
  Read More

• MSRPC-to-ATTACK/documents/MS-SRVS.md at ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3 · jsecurity101/MSRPC-to-ATTACK

  

  A repository that maps commonly used attacks using MSRPC protocols to ATT&CK - jsecurity101/MSRPC-to-ATTACK

  
  Read More

• GitHub - zeronetworks/rpcfirewall

  

  Contribute to zeronetworks/rpcfirewall development by creating an account on GitHub.

  
  Read More

• Stopping Lateral Movement via the RPC Firewall - Sagie Dulce

  

  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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