rule Backdoor_Win32_Pterodo_A{ meta: description = "Backdoor:Win32/Pterodo.A,SIGNATURE_TYPE_PEHSTR_EXT,04 00 04 00 04 00 00 01 00 " strings : $a_01_0 = {6d 73 66 6f 6c 64 65 72 3d 7b 00 } //01 00 $a_01_1 = {63 6f 6d 6d 61 6e 64 3d 7b 00 } //01 00 潣浭湡㵤{ $a_03_2 = {2e 70 68 70 90 02 06 00 50 4f 53 54 90 00 } //01 00 $a_03_3 = {5c 64 65 76 65 6c 6f 70 5c 72 65 61 64 79 5c 90 02 50 5c 77 69 6e 72 65 73 74 6f 72 65 2e 70 64 62 90 00 } //00 00 $a_00_4 = {5d 04 00 } //00 0b condition: any of ($a_*) }