/* 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. */ rule Backdoor_WebShell_asp : ASPXSpy { meta: description= "Detect ASPXSpy" author = "xylitol@temari.fr" date = "2019-02-26" // May only the challenge guide you strings: $string1 = "CmdShell" wide ascii $string2 = "ADSViewer" wide ascii $string3 = "ASPXSpy.Bin" wide ascii $string4 = "PortScan" wide ascii $plugin = "Test.AspxSpyPlugins" wide ascii condition: 3 of ($string*) or $plugin }