rule Backdoor_Win32_Fledrots_A{ meta: description = "Backdoor:Win32/Fledrots.A,SIGNATURE_TYPE_PEHSTR_EXT,03 00 03 00 04 00 00 02 00 " strings : $a_03_0 = {68 70 f1 00 00 68 12 01 00 00 e8 90 01 04 50 e8 90 01 04 eb cd 90 00 } //01 00 $a_01_1 = {70 69 6e 67 2e 70 68 70 } //01 00 ping.php $a_01_2 = {69 6d 67 6f 6e 00 } //01 00 浩潧n $a_01_3 = {26 72 73 74 3d 31 } //00 00 &rst=1 condition: any of ($a_*) }