ESXi Network Configuration Discovery Via ESXCLI

calendar Sep 6, 2023 · attack.discovery attack.t1033 attack.t1007  ·
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Detects execution of the "esxcli" command with the "network" flag in order to retrieve information about the network configuration.

Sigma rule (View on GitHub)

 1title: ESXi Network Configuration Discovery Via ESXCLI
 2id: 33e814e0-1f00-4e43-9c34-31fb7ae2b174
 3status: experimental
 4description: Detects execution of the "esxcli" command with the "network" flag in order to retrieve information about the network configuration.
 5references:
 6    - https://www.crowdstrike.com/blog/hypervisor-jackpotting-ecrime-actors-increase-targeting-of-esxi-servers/
 7    - https://developer.vmware.com/docs/11743/esxi-7-0-esxcli-command-reference/namespace/esxcli_network.html
 8author: Cedric Maurugeon
 9date: 2023/09/04
10tags:
11    - attack.discovery
12    - attack.t1033
13    - attack.t1007
14logsource:
15    category: process_creation
16    product: linux
17detection:
18    selection_img:
19        Image|endswith: '/esxcli'
20        CommandLine|contains: 'network'
21    selection_cli:
22        CommandLine|contains:
23            - ' get'
24            - ' list'
25    condition: all of selection_*
26falsepositives:
27    - Legitimate administration activities
28# Note: level can be reduced to low in some envs
29level: medium

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