IMPORTANT: No additional bug fixes or documentation updates
will be released for this version. For the latest information, see the
current release documentation.
Potential Pspy Process Monitoring Detectededit
This rule leverages auditd to monitor for processes scanning different processes within the /proc directory using the openat syscall. This is a strong indication for the usage of the pspy utility. Attackers may leverage the pspy process monitoring utility to monitor system processes without requiring root permissions, in order to find potential privilege escalation vectors.
Rule type: eql
Rule indices:
- logs-auditd_manager.auditd-*
Severity: low
Risk score: 21
Runs every: 5m
Searches indices from: now-9m (Date Math format, see also Additional look-back time)
Maximum alerts per execution: 100
References:
Tags:
- Domain: Endpoint
- OS: Linux
- Use Case: Threat Detection
- Tactic: Discovery
Version: 4
Rule authors:
- Elastic
Rule license: Elastic License v2
Rule queryedit
sequence by process.pid, host.id with maxspan=5s
[ file where host.os.type == "linux" and event.dataset == "auditd_manager.auditd" and
auditd.data.syscall == "openat" and file.path == "/proc" and auditd.data.a0 : ("ffffffffffffff9c", "ffffff9c") and
auditd.data.a2 : ("80000", "88000") ] with runs=10
Framework: MITRE ATT&CKTM
-
Tactic:
- Name: Discovery
- ID: TA0007
- Reference URL: https://attack.mitre.org/tactics/TA0007/
-
Technique:
- Name: Process Discovery
- ID: T1057
- Reference URL: https://attack.mitre.org/techniques/T1057/
-
Technique:
- Name: System Information Discovery
- ID: T1082
- Reference URL: https://attack.mitre.org/techniques/T1082/