Detections
Explore public detection logic contributed by the community across SIEM and rule languages.
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This detection identifies the use of ESXCLI system-level commands that retrieve configuration details. While used for legitimate administration, this behavior may also indicate adversary reconnaissance aimed at profiling the ESXi host's capabilities, build information, or system role in preparation for further compromise.
This detection identifies changes to the syslog loghost configuration on an ESXi host, which may indicate an attempt to disrupt log forwarding and evade detection.
Detects the disabling of critical encryption enforcement settings on an ESXi host, such as secure boot or executable verification requirements, which may indicate an attempt to weaken hypervisor integrity or allow unauthorized code execution. This rule specifically looks for syslog messages indicating modifications to encryption settings, including parameters like `--require-secure-boot` or `require-exec-installed-only`.
This detection monitors for signs of a shared or potentially compromised root account on ESXi hosts by tracking the number of unique IP addresses logging in as root within a short time window. Multiple logins from different IPs in a brief period may indicate credential misuse, lateral movement, or account compromise.
This detection identifies changes to the syslog configuration on an ESXi host using `esxcli`, which may indicate an attempt to disrupt log collection and evade detection. Adversaries may modify logging configurations to hinder forensic analysis and remain undetected.
This detection identifies when Lockdown Mode is disabled on an ESXi host, which can indicate that a threat actor is attempting to weaken host security controls. Disabling Lockdown Mode allows broader remote access via SSH or the host client and may precede further malicious actions such as data exfiltration, lateral movement, or VM tampering.
This detection identifies when a user is granted the Administrator role on an ESXi host. Assigning elevated privileges is a critical action that can indicate potential malicious behavior if performed unexpectedly. Adversaries who gain access may use this to escalate privileges, maintain persistence, or disable security controls.
KQL Query from file: CVE-2025-22224 (CVSS 9.3 CRITICAL) Internet facing VMware server discovery
The query checks process command being placed into the script; CVE-2022-22960 allows a user to write to it and be executed as root.
This vulnerability of VMware Workspace ONE Access, Identity Manager and vRealize Automation contain a privilege escalation vulnerability due to improper permissions in support scripts.
CVE: CVE-2022-22960.
Read more here:.
https://www.cisa.gov/uscert/ncas/alerts/aa22-138b
https://www.vmware.com/security/advisories/VMSA-2022-0011.html
Tags: #exploit #CVE-2022-22960
This vulnerability of VMware Workspace ONE Access, Identity Manager and vRealize Automation contain a privilege escalation vulnerability due to improper permissions in support scripts.
CVE: CVE-2022-22960.
Read more here:.
https://www.cisa.gov/uscert/ncas/alerts/aa22-138b
https://www.vmware.com/security/advisories/VMSA-2022-0011.html
Tags: #exploit #CVE-2022-22960
Detects the creation or modification of a Windows domain group named "ESX Admins". This activity is suspicious because VMware ESXi hypervisors joined to an Active Directory domain grant full administrative access by default to members of a group with this specific name. This could indicate a potential exploitation attempt of CVE-2024-37085, which allows an attacker to elevate privileges on a domain-joined ESXi hypervisor.
Detects the execution of the "esxcli" command with the "vm" and "kill" flags, indicating an attempt to terminate or shut down a specific virtual machine on an ESXi hypervisor. This activity can be indicative of malicious actions such as ransomware attacks targeting virtualized environments.
Detects the creation of a new user account on an ESXi system using the 'esxcli' command-line interface. This activity can be an indicator of an adversary establishing persistence or gaining unauthorized access to the hypervisor.
Detects the execution of the 'esxcli' command with the 'vm' flag to retrieve information about installed virtual machines on an ESXi hypervisor. This activity can be part of discovery phase by adversaries targeting ESXi environments.
Detects the execution of the "esxcli" command with the "network" flag to retrieve information about the network configuration on an ESXi host. This activity can be indicative of an adversary performing discovery.
Detects the execution of the 'esxcli' command with the 'system' flag, combined with 'get' or 'list' subcommands, to retrieve information about various system components on an ESXi host. This can include details about accounts, modules, NTP settings, and other system configurations.
Detects the execution of the 'esxcli' command with the 'storage' flag to retrieve information about storage status on VMware ESXi systems. This activity has been observed in malware campaigns, including DarkSide and LockBit ransomware.
Detects the execution of the "esxcli" command with the "vsan" flag to gather information about virtual storage on VMware ESXi systems. This activity has been observed in malware campaigns, including DarkSide and LockBit ransomware, indicating potential reconnaissance or preparation for impact on virtualized environments.
Detects changes to the ESXi syslog configuration via the 'esxcli' command-line utility. This activity could indicate an adversary attempting to impair defenses by modifying logging configurations on an ESXi hypervisor.
This analytic detects the creation, deletion, or modification of the "ESX Admins" group in Active Directory. These events may indicate attempts to exploit the VMware ESXi Active Directory Integration Authentication Bypass vulnerability (CVE-2024-37085).
This analytic detects attempts to create an "ESX Admins" group using PowerShell commands. This activity may indicate an attempt to exploit the VMware ESXi Active Directory Integration Authentication Bypass vulnerability (CVE-2024-37085). Attackers can use this method to gain unauthorized access to ESXi hosts by recreating the 'ESX Admins' group after its deletion from Active Directory.
This analytic detects attempts to create an "ESX Admins" group using the Windows net.exe or net1.exe commands. This activity may indicate an attempt to exploit the VMware ESXi Active Directory Integration Authentication Bypass vulnerability (CVE-2024-37085). Attackers can use this method to gain unauthorized access to ESXi hosts by recreating the "ESX Admins" group after its deletion from Active Directory.
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