rule Backdoor_Win32_IRCbot_KX{ meta: description = "Backdoor:Win32/IRCbot.KX,SIGNATURE_TYPE_PEHSTR_EXT,05 00 05 00 06 00 00 " strings : $a_02_0 = {42 6f 74 20 43 6f 6e 6e 65 63 74 65 64 20 74 6f 20 [0-10] 20 6f 6e 20 70 6f 72 74 20 36 36 36 } //1 $a_00_1 = {53 68 65 6c 6c 63 6f 64 65 20 75 73 65 64 3a 20 28 25 6c 64 } //1 Shellcode used: (%ld $a_00_2 = {21 52 65 76 65 72 73 65 53 68 65 6c 6c } //1 !ReverseShell $a_00_3 = {69 72 63 42 6f 74 2d 3e 6e 69 63 6b } //1 ircBot->nick $a_00_4 = {23 62 6f 74 2d 62 6f 74 2d 62 6f 74 } //1 #bot-bot-bot $a_00_5 = {4e 49 43 4b 20 42 6f 74 42 6f 74 42 6f 74 } //1 NICK BotBotBot condition: ((#a_02_0 & 1)*1+(#a_00_1 & 1)*1+(#a_00_2 & 1)*1+(#a_00_3 & 1)*1+(#a_00_4 & 1)*1+(#a_00_5 & 1)*1) >=5 }