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ESXi File Made Executable with chmod

Detects chmod making a file executable on an ESXi host, including `+x` and numeric modes such as `755` and `777`. The host will not run a file until the execute bit is set. Making a file under `/tmp` executable is…

Description

Detects chmod making a file executable on an ESXi host, including `+x` and numeric modes such as `755` and `777`. The host will not run a file until the execute bit is set. Making a file under `/tmp` executable is the step that lets a later command launch it against the datastore.

Detection logic

Its licence does not clear it for publishing here

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Detection requirements

Platform
ESXiLinuxmacOSWindows

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 mark a maintenance or support script executable during a change window. Confirm the path, the account, and whether the same session then executes a file from `/tmp` or enumerates virtual disks.

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