32 lines
1.2 KiB
Text
32 lines
1.2 KiB
Text
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rule malware_windows_xrat_quasarrat
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{
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meta:
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description = "xRAT is a derivative of QuasarRAT; this catches both RATs."
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reference = "https://github.com/quasar/QuasarRAT"
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author = "@mimeframe"
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strings:
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// RemoteShell
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$a1 = ">> New Session created" wide ascii
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$a2 = ">> Session unexpectedly closed" wide ascii
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$a3 = ">> Session closed" wide ascii
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$a4 = "session unexpectedly closed" wide ascii
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$a5 = "cmd" fullword wide ascii
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$a6 = "/K" fullword wide ascii
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// Commands
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$b1 = "echo DONT CLOSE THIS WINDOW!" wide ascii
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$b2 = "ping -n 20 localhost > nul" wide ascii
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$b3 = "Downloading file..." wide ascii
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$b4 = "Visited Website" wide ascii
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$b5 = "Adding Autostart Item failed!" wide ascii
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$b6 = ":Zone.Identifier" wide ascii
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// System Handler
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$c1 = "GetDrives I/O error" wide ascii
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$c2 = "/r /t 0" wide ascii
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$c3 = "desktop.ini" wide ascii
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$c4 = "WAN IP Address" wide ascii
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$c5 = "User refused the elevation request." wide ascii
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$c6 = "Process already elevated." wide ascii
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condition:
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5 of ($a*) or 5 of ($b*) or 5 of ($c*)
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}
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