Sunturai
Back to results
InformationalSplunk security contentTeoderick Contreras +1

Linux Possible Ssh Key File Creation

The following analytic detects the creation of SSH key files in the ~/.ssh/ directory. It leverages filesystem data to identify new files in this specific path. This activity is significant because threat actors…

Description

The following analytic detects the creation of SSH key files in the ~/.ssh/ directory. It leverages filesystem data to identify new files in this specific path. This activity is significant because threat actors often create SSH keys to gain persistent access and escalate privileges on a compromised host. If confirmed malicious, this could allow attackers to remotely access the machine using the OpenSSH daemon service, leading to potential unauthorized control and data exfiltration.

Detection logic

Detection requirements

Platform
ESXiIaaSLinuxmacOSNetwork Devices

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

Log source category
sysmon_for_linux_eventid_11

Known benign triggers

  • Administrator or network operator can create file in ~/.ssh folders for automation purposes. Please update the filter macros to remove false positives.

Detections can measure how the public catalogue is used — which detections people look for, and which pages bring them here. It sets a cookie that recognises this browser for 180 days. It is never linked to an account and never follows you to other sites. Privacy notice