From f986f4a22169699ed4143679eca8f5cc15c218a0 Mon Sep 17 00:00:00 2001 From: mhaag-spl <5632822+MHaggis@users.noreply.github.com> Date: Wed, 2 Feb 2022 13:32:53 -0700 Subject: [PATCH] Update powershell_remove_windows_defender_directory.yml Resolving https://github.com/splunk/security_content/pull/1962 --- .../endpoint/powershell_remove_windows_defender_directory.yml | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/detections/endpoint/powershell_remove_windows_defender_directory.yml b/detections/endpoint/powershell_remove_windows_defender_directory.yml index d891abf325..fe08533824 100644 --- a/detections/endpoint/powershell_remove_windows_defender_directory.yml +++ b/detections/endpoint/powershell_remove_windows_defender_directory.yml @@ -11,7 +11,7 @@ description: This analytic will identify a suspicious PowerShell command used to campaign where it used Nirsofts advancedrun.exe to gain administrative privileges to then execute a PowerShell command to delete the Windows Defender folder. This is a good indicator the offending process is trying corrupt a Windows Defender installation. -search: '`powershell` EventCode=4104 Message = "* rmdir *" OR Message = "*\\Microsoft\\Windows +search: '`powershell` EventCode=4104 Message = "* rmdir *" AND Message = "*\\Microsoft\\Windows Defender*" | stats count min(_time) as firstTime max(_time) as lastTime by EventCode Message ComputerName User | `security_content_ctime(firstTime)` | `security_content_ctime(lastTime)` | `powershell_remove_windows_defender_directory_filter`'