Uncommon Child Process Of Appvlp.EXE
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About the rule
Rule Type
Standard
Rule Description
Detects uncommon child processes of Appvlp.EXE Appvlp or the Application Virtualization Utility is included with Microsoft Office. Attackers are able to abuse "AppVLP" to execute shell commands. Normally, this binary is used for Application Virtualization, but it can also be abused to circumvent the ASR file path rule folder or to mark a file as a system file.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND PARENTPROCESSNAME endswith "\appvlp.exe" AND PROCESSNAME notendswith ":\Windows\SysWOW64\rundll32.exe,:\Windows\System32\rundll32.exe" AND ((PROCESSNAME notcontains ":\Program Files\Microsoft Office" OR PROCESSNAME notendswith "\msoasb.exe") AND ((PROCESSNAME notcontains ":\Program Files\Microsoft Office" OR PROCESSNAME notcontains "\SkypeSrv") OR PROCESSNAME notendswith "\SKYPESERVER.EXE") AND (PROCESSNAME notcontains ":\Program Files\Microsoft Office" OR PROCESSNAME notendswith "\MSOUC.EXE")) select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Sreeman
