diff --git a/rules/windows/process_creation/win_process_dump_rundll32_comsvcs.yml b/rules/windows/process_creation/win_process_dump_rundll32_comsvcs.yml index d75fdc85a..e41084320 100644 --- a/rules/windows/process_creation/win_process_dump_rundll32_comsvcs.yml +++ b/rules/windows/process_creation/win_process_dump_rundll32_comsvcs.yml @@ -7,7 +7,7 @@ references: - https://twitter.com/pythonresponder/status/1385064506049630211?s=21 author: Florian Roth date: 2020/02/18 -modified: 2021/04/23 +modified: 2021/12/07 tags: - attack.defense_evasion - attack.t1036 @@ -19,12 +19,17 @@ logsource: category: process_creation product: windows detection: - selection: - CommandLine|contains: - - 'comsvcs.dll,#24' - - 'comsvcs.dll,MiniDump' - - 'comsvcs.dll MiniDump' - condition: selection + selection_comsvcs: + CommandLine|contains: + - 'comsvcs.dll' + - 'rundll32' + selection_function: + Commandline|contains: + - '#24' + - 'MiniDump' + selection_full: + CommandLine|contains: ' full' + condition: all of selection* falsepositives: - Unlikely, because no one should dump the process memory in that way level: high