Analytics Story: Linux Post-Exploitation

Updated Date: 2026-05-13 ID: d310ccfe-5477-11ec-ad05-acde48001122 Author: Rod Soto Product: Splunk Enterprise Security

Description

This analytic story identifies popular Linux post exploitation tools such as autoSUID, LinEnum, LinPEAS, Linux Exploit Suggesters, MimiPenguin.

Why it matters

These tools allow operators find possible exploits or paths for privilege escalation based on SUID binaries, user permissions, kernel version and distro version.

Detections

Name ▲▼	Technique ▲▼	Type ▲▼
Linux Binary Executed from Shared Memory Directory	Command and Scripting Interpreter	Anomaly
Linux Possible Privilege Escalation via PYTHONPATH	Exploitation for Privilege Escalation, Path Interception by PATH Environment Variable	TTP
Windows Suspicious QEMU Execution	Data Obfuscation, Masquerading, Malicious File, Run Virtual Instance	TTP
Linux Root Execution of id	System Owner/User Discovery	Anomaly
Suspicious Linux Discovery Commands	Unix Shell	TTP
Linux Netcat Outbound Connection	Unix Shell	Anomaly
Linux Suspicious Privileged Container Execution	Unix Shell, Deploy Container	Anomaly
Linux UDEV Rule Created	Boot or Logon Initialization Scripts, Boot or Logon Autostart Execution	Anomaly
Linux Suspicious Staging of Alternate System Files	Masquerading	Anomaly
Linux MOTD Script Added	Boot or Logon Initialization Scripts, Unix Shell, Boot or Logon Autostart Execution	Anomaly
Linux Suspicious GCC Invocation Building Init Shared Object	Compile After Delivery, Exploitation for Privilege Escalation, Shared Modules, Stage Capabilities	TTP
Linux Shell Pseudo Device Reverse Shell	Exfiltration Over Unencrypted Non-C2 Protocol, Command and Scripting Interpreter	Anomaly
Linux Possible System Binary Backdoor	Masquerading, Unix Shell	Anomaly
Linux Usermod Root UID Set	Valid Accounts, Account Manipulation, Setuid and Setgid	TTP
Linux Ghostscript Exploitation	Command and Scripting Interpreter, Exploitation for Privilege Escalation, Malicious File, Phishing	TTP
Linux Possible Nimbuspwn Privilege Escalation	Exploitation for Privilege Escalation	TTP
Linux Suspicious Redis Activity	Exploitation of Remote Services, Server Software Component	TTP
Linux Suspicious Child Process of PostgreSQL	Exploit Public-Facing Application	TTP
Linux Suspicious Docker Build Command Execution	Deploy Container	Anomaly
Linux Suspicious XDG Autostart	Boot or Logon Initialization Scripts, Unix Shell, Boot or Logon Autostart Execution	Anomaly
Linux Shell History Access Via Command Line Utility	Shell History	Anomaly

Data Sources

Name ▲▼	Platform ▲▼	Sourcetype ▲▼	Source ▲▼
Sysmon for Linux EventID 1	Linux	`sysmon:linux`	`Syslog:Linux-Sysmon/Operational`
Sysmon for Linux EventID 11	Linux	`sysmon:linux`	`Syslog:Linux-Sysmon/Operational`
Sysmon EventID 1	Windows	`XmlWinEventLog`	`XmlWinEventLog:Microsoft-Windows-Sysmon/Operational`
Sysmon for Linux EventID 3	Linux	`sysmon:linux`	`Syslog:Linux-Sysmon/Operational`

References

https://attack.mitre.org/matrices/enterprise/linux/

Source: GitHub | Version: 2