rule Backdoor_Win32_Skylark_A{ meta: description = "Backdoor:Win32/Skylark.A,SIGNATURE_TYPE_PEHSTR_EXT,0b 00 0b 00 03 00 00 04 00 " strings : $a_01_0 = {53 6b 79 6c 61 72 6b 20 53 65 72 76 65 72 20 76 } //03 00 Skylark Server v $a_01_1 = {54 72 6f 6a 61 6e 20 4d 61 6e 61 67 65 6d 65 6e 74 20 41 67 65 6e 74 73 20 4d 6f 64 75 6c 65 2e } //04 00 Trojan Management Agents Module. $a_01_2 = {53 6b 79 6c 61 72 6b 43 66 67 } //00 00 SkylarkCfg condition: any of ($a_*) }