This Yara ruleset is under the GNU-GPLv2 license (http://www.gnu.org/licenses/gpl-2.0.html) and open to any user or organization, as long as you use it under this license.
pe.exports("run_shell") and pe.imports("kernel32.dll","GetTickCount") and pe.imports("kernel32.dll","IsDebuggerPresent") and pe.imports("msvcr100.dll","_crt_debugger_hook") and pe.imports("kernel32.dll","TerminateProcess") and pe.imports("kernel32.dll","UnhandledExceptionFilter")