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MediumElastic detection rulesElastic

ESXi Curl or Wget Activity

Detects `curl` or `wget` from the ESXi shell. These tools download a file or contact a remote URL from the hypervisor. A successful transfer can place a package or script on the host, often under `/tmp`, where a…

Description

Detects `curl` or `wget` from the ESXi shell. These tools download a file or contact a remote URL from the hypervisor. A successful transfer can place a package or script on the host, often under `/tmp`, where a later command can execute it against the datastore.

Detection logic

Its licence does not clear it for publishing here

Sunturai publishes a detection's own text where the licence it arrived under has been reviewed and permits it, and Elastic License 2.0 has not. The query as its source wrote it, its canonical form and the hash that pins this revision are in the workspace record.

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Detection requirements

Platform
ESXiLinuxmacOSNetwork DevicesWindows

The rule states no platform. This is derived from the ATT&CK technique it maps to.

Log source category
event_index

Known benign triggers

  • Administrators use `wget` to download a patch, VIB, or support script during maintenance. Confirm the URL and whether the same session continues into file execution or virtual machine shutdown.

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