SharpHound Recon Account Discovery

calendar Jun 4, 2025 · attack.t1087 attack.discovery  ·
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Detects remote RPC calls useb by SharpHound to map remote connections and local group membership.

Sigma rule (View on GitHub)

 1title: SharpHound Recon Account Discovery
 2id: 65f77b1e-8e79-45bf-bb67-5988a8ce45a5
 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-wkst/55118c55-2122-4ef9-8664-0c1ff9e168f3
 7    - https://github.com/jsecurity101/MSRPC-to-ATTACK/blob/ddd4608fe8684fcf2fcf9b48c5f0b3c28097f8a3/documents/MS-WKST.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
12tags:
13    - attack.t1087
14    - attack.discovery
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:6bffd098-a112-3610-9833-46c3f87e345a opnum:2'
19detection:
20    selection:
21        EventLog: RPCFW
22        EventID: 3
23        InterfaceUuid: 6bffd098-a112-3610-9833-46c3f87e345a
24        OpNum: 2
25    condition: selection
26falsepositives:
27    - Unknown
28level: high

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