rule Backdoor_Win32_Zelug_B{ meta: description = "Backdoor:Win32/Zelug.B,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 04 00 00 " strings : $a_01_0 = {50 33 c0 8a 87 99 01 00 00 33 c9 8a 8f 98 01 00 00 33 d2 8a 97 97 01 00 00 50 51 33 c0 8a 87 96 01 00 00 52 } //1 $a_01_1 = {7a 68 75 67 65 6c 69 61 6e 6e 75 } //2 zhugeliannu $a_01_2 = {25 30 32 58 25 30 32 58 25 30 32 58 25 30 32 58 25 30 32 58 25 30 32 58 25 30 34 58 00 } //1 $a_01_3 = {70 6f 73 74 20 72 63 34 64 65 63 72 79 70 74 3a 25 73 00 } //1 condition: ((#a_01_0 & 1)*1+(#a_01_1 & 1)*2+(#a_01_2 & 1)*1+(#a_01_3 & 1)*1) >=5 }