ESXi VM List Discovery Via ESXCLI

Title: ESXi VM List Discovery Via ESXCLI
Status: test
Description:Detects execution of the "esxcli" command with the "vm" flag in order to retrieve information about the installed VMs.
References:
  -https://www.crowdstrike.com/blog/hypervisor-jackpotting-ecrime-actors-increase-targeting-of-esxi-servers/
  -https://developer.broadcom.com/xapis/esxcli-command-reference/7.0.0/namespace/esxcli_vm.html
  -https://www.secuinfra.com/en/techtalk/hide-your-hypervisor-analysis-of-esxiargs-ransomware/
  -https://www.trendmicro.com/en_us/research/22/e/new-linux-based-ransomware-cheerscrypt-targets-exsi-devices.html
Author: Cedric Maurugeon
Date: 2023-09-04
modified:None
Tags:

• -'attack.discovery'
• -'attack.execution'
• -'attack.t1033'
• -'attack.t1007'
• -'attack.t1059.012'

Logsource:

• category: process_creation
• product: linux

Detection:
  selection:
    Image|endswith: '/esxcli'
    CommandLine|contains: 'vm process'
    CommandLine|endswith: ' list'
  condition:selection
Falsepositives:
  -Legitimate administration activities
Level: medium