rule Backdoor_Win32_Zuza{ meta: description = "Backdoor:Win32/Zuza,SIGNATURE_TYPE_PEHSTR_EXT,03 00 03 00 03 00 00 01 00 " strings : $a_01_0 = {50 4f 53 54 20 2f 69 6e 64 65 78 2e 61 73 70 20 48 54 54 50 2f 31 2e 31 } //01 00 POST /index.asp HTTP/1.1 $a_01_1 = {73 65 6e 73 36 34 2e 64 6c 6c } //01 00 sens64.dll $a_01_2 = {6d 73 63 6d 6f 73 2e 73 79 73 } //00 00 mscmos.sys condition: any of ($a_*) }