Windows Network Connection From Program In Suspect Location
The following analytic detects network connections from processes running out of suspicious Windows directories such as Recycle Bin, Public, PerfLogs, systemprofile, Fonts, IME, and Addins paths. This activity is…
Description
The following analytic detects network connections from processes running out of suspicious Windows directories such as Recycle Bin, Public, PerfLogs, systemprofile, Fonts, IME, and Addins paths. This activity is significant because malware often executes from writable or unusual directories while communicating with external infrastructure. If confirmed malicious, the process may represent command-and-control, staging, or data exfiltration activity from a compromised endpoint.
Detection logic
Detection requirements
- Platform
- LinuxmacOSWindows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
- Log source category
- sysmon_eventid_3
Known benign triggers
- Some legitimate system or security tools may run from these folders and create network connections. Review and allow trusted processes to reduce false positives.
MITRE ATT&CK mappings
0 exclusive techniques.This is coverage no other published rule has; it is not this rule's total technique count.
References
| Reference | Cited by |
|---|---|
| github.com/Neo23x0/sigma/blob/master/rules/windows/sysmon/sysmon_susp_prog_location_network_connection.yml | Only this detection cites it |
From the source
- At source
- Open at source
- Upstream identifier
- 90fd571b-78d4-409e-a2de-0f0a80c75a84
- Tagged by the source as
- Compromised Windows HostEndpointendpointSplunk CloudSplunk EnterpriseSplunk Enterprise Securityendpoint
Licence
- Published under
- Apache License 2.0Read the licence
- Attribution
- Required
- Obtained under
- Apache-2.0Read the origin licence
Authorship
- Written by
- Published
- Aug 26, 2026
- Version
- 1