rule Spammer_WinNT_Nuwar_A_sys{ meta: description = "Spammer:WinNT/Nuwar.A!sys,SIGNATURE_TYPE_PEHSTR_EXT,05 00 04 00 05 00 00 01 00 " strings : $a_01_0 = {65 78 70 6c 6f 72 65 72 00 00 00 00 7a 6c 63 6c } //01 00 $a_01_1 = {50 72 6f 74 65 63 74 00 00 73 70 6f 6f 6c 64 72 } //01 00 牐瑯捥t猀潰汯牤 $a_01_2 = {83 c4 0c 33 c0 c6 46 10 00 40 5e eb 02 33 c0 } //01 00 $a_01_3 = {c2 04 00 64 a1 00 00 00 00 8b 40 04 66 33 c0 } //01 00 $a_01_4 = {66 81 38 4d 5a 74 07 2d 00 10 00 00 eb f2 c3 55 8b ec } //00 00 condition: any of ($a_*) }