diff --git a/rules/windows/file/file_event/file_event_win_creation_system_file.yml b/rules/windows/file/file_event/file_event_win_creation_system_file.yml index f5559d598..e7d560dc9 100755 --- a/rules/windows/file/file_event/file_event_win_creation_system_file.yml +++ b/rules/windows/file/file_event/file_event_win_creation_system_file.yml @@ -4,7 +4,7 @@ status: test description: Detects the creation of an executable with a system process name in folders other than the system ones (System32, SysWOW64...etc). author: Sander Wiebing, Tim Shelton, Nasreddine Bencherchali date: 2020/05/26 -modified: 2022/11/08 +modified: 2022/11/09 tags: - attack.defense_evasion - attack.t1036.005 @@ -91,6 +91,7 @@ detection: - 'C:\Windows\System32\' - 'C:\Windows\SysWOW64\' - 'C:\Windows\WinSxS\' + - 'C:\Windows\SoftwareDistribution\' - '\SystemRoot\System32\' Image|endswith: - '\Windows\System32\dism.exe' diff --git a/rules/windows/process_creation/proc_creation_win_lolbin_wlrmdr.yml b/rules/windows/process_creation/proc_creation_win_lolbin_wlrmdr.yml index b0cc6e741..3fbfaedfd 100644 --- a/rules/windows/process_creation/proc_creation_win_lolbin_wlrmdr.yml +++ b/rules/windows/process_creation/proc_creation_win_lolbin_wlrmdr.yml @@ -6,7 +6,7 @@ references: - https://twitter.com/0gtweet/status/1493963591745220608?s=20&t=xUg9DsZhJy1q9bPTUWgeIQ author: frack113 date: 2022/02/16 -modified: 2022/06/02 +modified: 2022/11/09 tags: - attack.defense_evasion logsource: @@ -24,7 +24,9 @@ detection: - '-u ' filter: ParentImage: 'C:\Windows\System32\winlogon.exe' - condition: selection and not filter + filter_null: + ParentImage: '-' + condition: selection and not 1 of filter* falsepositives: - Unknown level: medium