Query: alert when Detects potentially suspicious processes being spawned by a web server process which could be the result of a successful
Matching passage: Sigma rule: Detects potentially suspicious processes being spawned by a web server process which could be the result of a successful. Logsource: windows / process_creation. Rule: title: Suspicious Process By Web Server Process id: 8202070f-edeb-4d31-a010-a26c72ac5600 status: test description: 'Detects potentially suspicious processes being spawned by a web server process which could be the result of a successfully placed web shell or exploitation ' references: - https://media.defense.gov/2020/Jun/09/2002313081/-1/-1/0/CSI-DETECT-AND-PREVENT-WEB-SHELL-MALWARE-20200422.PDF author: Thomas Patzke, Florian Roth (Nextron Systems), Zach Stanford @svch0st, Tim Shelton, Nasreddine Bencherchali (Nextron Systems) date: 2019-01-16 modified: 2024-11-26 tags: - attack.persistence - attack.initial-access - attack.t1505.003 - attack.t1190 logsource: category: process_creation product: windows detection: selection_webserver_image: ParentImage|endswith: - \caddy.exe - \httpd.exe - \nginx.exe - \php-cgi.exe - \php.exe - \tomcat.exe - \UMWorkerProcess.exe - \w3wp.exe - \ws_TomcatService.exe selection_webserver_characteristics_tomcat1: ParentImage|endswith: - \java.exe - \javaw.exe ParentImage|contains: - -tomcat- - \tomcat selection_webserver_characteristics_tomcat2: ParentImage|endswith: - \java.exe - \javaw.exe ParentCommandLine|contains: - CATALINA_HOME - catalina.home - catalina.jar selection_anomaly_children: Image|endswith: - \arp.exe - \at.exe - \bash.exe - \bitsadmin.exe - \certutil.exe - \cmd.exe - \cscript.exe - \dsget.exe - \hostname.exe - \nbtstat.exe - \net.exe - \net1.exe - \netdom.exe - \netsh.exe - \nltest.exe - \ntdsutil.exe - \powershell_ise.exe - \powershell.exe - \pwsh.exe - \qprocess.exe - \query.exe - \qwinsta.exe - \reg.exe - \rundll32.exe - \sc.exe - \sh.exe - \wmic.exe - \wscript.exe - \wusa.exe filter_main_fp_1: ParentImage|endswith: \java.exe CommandLine|endswith: Windows\system32\cmd.exe /c C:\ManageEngine\ADManager "Plus\ES\bin\elasticsearch.bat -Enode.name=RMP-NODE1 -pelasticsearch-pid.txt filter_main_fp_2: ParentImage|endswith: \java.exe CommandLine|contains|all: - sc query - ADManager Plus condition: 1 of selection_webserver_* and selection_anomaly_children and not 1 of filter_main_* falsepositives: - Particular web applications may spawn a shell process legitimately level: high
Near-miss passage: Sigma rule: Detects a flashplayer update from an unofficial location. Logsource: proxy. Rule: title: Flash Player Update from Suspicious Location id: 4922a5dd-6743-4fc2-8e81-144374280997 status: test description: Detects a flashplayer update from an unofficial location references: - https://gist.github.com/roycewilliams/a723aaf8a6ac3ba4f817847610935cfb author: Florian Roth (Nextron Systems) date: 2017-10-25 modified: 2022-08-08 tags: - attack.initial-access - attack.stealth - attack.t1189 - attack.execution - attack.t1204.002 - attack.t1036.005 logsource: category: proxy detection: selection: - c-uri|contains: /flash_install.php - c-uri|endswith: /install_flash_player.exe filter: cs-host|endswith: .adobe.com condition: selection and not filter falsepositives: - Unknown flash download locations level: high