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srv-rr-gh-researchbt
2023-04-20 12:18:36 -07:00
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@@ -1,16 +1,11 @@
name: System Process Running from Unexpected Location
id: 28179107-099a-464a-94d3-08301e6c055f
version: 4
version: 5
date: '2022-03-24'
author: Jose Hernadnez, Ignacio Bermudez Corrales, Splunk
author: Jose Hernandez, Ignacio Bermudez Corrales, Splunk
type: Anomaly
status: production
description: An attacker tries might try to use different version of a system command
without overriding original, or they might try to avoid some detection running the
process from a different folder. This detection checks that a list of system processes
run inside C:\\Windows\System32 or C:\\Windows\SysWOW64 The list of system processes
has been extracted from https://github.com/splunk/security_content/blob/develop/lookups/is_windows_system_file.csv
and the original detection https://github.com/splunk/security_content/blob/develop/detections/system_processes_run_from_unexpected_locations.yml
description: An attacker might try to use a different version of a system command without overriding the original, or they might try to avoid some detections by running the process from a different folder. This detection checks that a list of system processes are run inside C:\\Windows\System32 or C:\\Windows\SysWOW64. The list of system processes has been extracted from https://github.com/splunk/security_content/blob/develop/lookups/is_windows_system_file.csv and the original detection https://github.com/splunk/security_content/blob/develop/detections/system_processes_run_from_unexpected_locations.yml
data_source:
- Windows Security 4688
search: ' | from read_ba_enriched_events() | eval timestamp = ucast(map_get(input_event,"time"),"long",
@@ -61,7 +56,7 @@ search: ' | from read_ba_enriched_events() | eval timestamp = ucast(map_get(inpu
OR process_file_name="sort.exe" OR process_file_name="snmptrap.exe" OR process_file_name="smss.exe"
OR process_file_name="slui.exe" OR process_file_name="sihost.exe" OR process_file_name="sigverif.exe"
OR process_file_name="shutdown.exe" OR process_file_name="shrpubw.exe" OR process_file_name="shadow.exe"
OR process_file_name="sfc.exe" OR process_file_name="setx.exe" OR process_file_name="setupugc.exe"
OR process_file_name="setx.exe" OR process_file_name="setupugc.exe"
OR process_file_name="setupcl.exe" OR process_file_name="setspn.exe" OR process_file_name="sethc.exe"
OR process_file_name="sessionmsg.exe" OR process_file_name="services.exe" OR process_file_name="secinit.exe"
OR process_file_name="sdiagnhost.exe" OR process_file_name="sdclt.exe" OR process_file_name="sdchange.exe"