diff --git a/rules/windows/process_creation/win_susp_winrm_AWL_bypass.yml b/rules/windows/process_creation/win_susp_winrm_AWL_bypass.yml new file mode 100644 index 000000000..18abf1bab --- /dev/null +++ b/rules/windows/process_creation/win_susp_winrm_AWL_bypass.yml @@ -0,0 +1,31 @@ +title: AWL Bypass with Winrm.vbs and Malicious WsmPty.xsl/WsmTxt.xsl +id: 074e0ded-6ced-4ebd-8b4d-53f55908119d +description: Detects execution of attacker-controlled WsmPty.xsl or WsmTxt.xsl via winrm.vbs and copied cscript.exe (can be renamed) +status: experimental +references: + - https://posts.specterops.io/application-whitelisting-bypass-and-arbitrary-unsigned-code-execution-technique-in-winrm-vbs-c8c24fb40404 +author: Julia Fomina, oscd.community +date: 2020/10/06 +tags: + - attack.defense_evasion + - attack.t1216 +logsource: + category: process_creation + product: windows +detection: + selection_1: + CommandLine|contains: + - 'format:pretty' + - 'format:"pretty"' + - 'format:"text"' + - 'format:text' + filter: + Image|startswith: + - 'C:\Windows\System32\' + - 'C:\Windows\SysWOW64\' + selection_2: + CommandLine|contains: 'winrm' + condition: selection_2 and selection_1 and not filter +level: medium +falsepositives: + - Unlikely