Amsi.DLL Load By Uncommon Process
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About the rule
Rule Type
Standard
Rule Description
Detects loading of Amsi.dll by uncommon processes
Severity
Attention
Rule Requirement
Criteria
Action1: actionname = "sa_imageloaded" AND OBJECTNAME endswith "\amsi.dll" AND (PROCESSNAME notendswith ":\Windows\explorer.exe,:\Windows\Sysmon64.exe" AND PROCESSNAME notcontains ":\Program Files (x86)\,:\Program Files\,:\Windows\System32\,:\Windows\SysWOW64\,:\Windows\WinSxS" AND (PROCESSNAME notcontains ":\Windows\Microsoft.NET\Framework\,:\Windows\Microsoft.NET\Framework64\,:\Windows\Microsoft.NET\FrameworkArm\,:\Windows\Microsoft.NET\FrameworkArm64" OR PROCESSNAME notendswith "\ngentask.exe") AND isExist(PROCESSNAME) AND PROCESSNAME != "") AND (PROCESSNAME notcontains ":\ProgramData\Microsoft\Windows Defender\Platform" OR PROCESSNAME notendswith "\MsMpEng.exe") select Action1.HOSTNAME,Action1.MESSAGE,Action1.PROCESSNAME,Action1.PRODUCT_NAME,Action1.OBJECTNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
frack113
