在线求救！~~~~~~~~~~~
请教，我上网，瑞星出现提示如下三个询问注册表修改，是木马吗？
HKEY_CLASSES_ROOT\.HTM\OPENWITHLIST\MICROSOFT OFFICE WORD\SHELL\EDIT
HKEY_CLASSES_ROOT\.HTM\OPENWITHLIST\MICROSOFT OFFICE WORD\SHELL
HKEY_CLASSES_ROOT\.HTM\OPENWITHLIST\MICROSOFT OFFICE WORD
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