diff --git a/detections/unsigned_image_loaded_by_lsass.yml b/detections/unsigned_image_loaded_by_lsass.yml index eb06175fb6..64f28e3eb3 100644 --- a/detections/unsigned_image_loaded_by_lsass.yml +++ b/detections/unsigned_image_loaded_by_lsass.yml @@ -1,6 +1,4 @@ -name: Unsigned Image Loaded by LSASS -id: 56ef054c-76ef-45f9-af4a-a634695dcd65 -version: 1 +author: Patrick Bareiss, Splunk date: '2019-12-06' description: This search detects loading of unsigned images by LSASS. how_to_implement: This search needs Sysmon Logs with a sysmon configuration, which @@ -9,27 +7,30 @@ how_to_implement: This search needs Sysmon Logs with a sysmon configuration, whi (index, source, sourcetype, etc.) for Windows Sysmon logs. Replace the macro definition with configurations for your Splunk environment. The search also uses a post-filter macro designed to filter out known false positives. -type: ESCU +id: 56ef054c-76ef-45f9-af4a-a634695dcd65 +known_false_positives: Other tools could load images into LSASS for legitimate reason. + But enterprise tools should always use signed DLLs. +name: Unsigned Image Loaded by LSASS references: - https://2017.zeronights.org/wp-content/uploads/materials/ZN17_Kheirkhabarov_Hunting_for_Credentials_Dumping_in_Windows_Environment.pdf -author: Patrick Bareiss, Splunk search: '`sysmon` EventID=7 Image=*lsass.exe Signed=false | stats count min(_time) as firstTime max(_time) as lastTime by Computer, Image, ImageLoaded, Signed, SHA1 | rename Computer as dest | `security_content_ctime(firstTime)`| `security_content_ctime(lastTime)` | `unsigned_image_loaded_by_lsass_filter` ' -known_false_positives: Other tools could load images into LSASS for legitimate reason. - But enterprise tools should always use signed DLLs. tags: analytics_story: - Credential Dumping - mitre_attack_id: - - T1003.001 - kill_chain_phases: - - Actions on Objectives + asset_type: Windows + automated_detection_testing: passed cis20: - CIS 8 - CIS 16 + kill_chain_phases: + - Actions on Objectives + mitre_attack_id: + - T1003.001 nist: - DE.CM security_domain: endpoint - asset_type: Windows +type: ESCU +version: 1