rule HackTool_Linux_SuspUnixReShellCmd_F{ meta: description = "HackTool:Linux/SuspUnixReShellCmd.F,SIGNATURE_TYPE_CMDHSTR_EXT,0c 00 0c 00 07 00 00 " strings : $a_00_0 = {3e 00 26 00 20 00 2f 00 64 00 65 00 76 00 2f 00 74 00 63 00 70 00 2f 00 } //10 >& /dev/tcp/ $a_00_1 = {3e 00 26 00 20 00 2f 00 64 00 65 00 76 00 2f 00 75 00 64 00 70 00 2f 00 } //10 >& /dev/udp/ $a_00_2 = {73 00 68 00 20 00 2d 00 69 00 } //1 sh -i $a_00_3 = {30 00 3e 00 26 00 31 00 } //1 0>&1 $a_00_4 = {31 00 32 00 37 00 2e 00 30 00 2e 00 30 00 2e 00 31 00 } //-50 127.0.0.1 $a_00_5 = {6c 00 6f 00 63 00 61 00 6c 00 68 00 6f 00 73 00 74 00 } //-50 localhost $a_00_6 = {30 00 2e 00 30 00 2e 00 30 00 2e 00 30 00 } //-50 0.0.0.0 condition: ((#a_00_0 & 1)*10+(#a_00_1 & 1)*10+(#a_00_2 & 1)*1+(#a_00_3 & 1)*1+(#a_00_4 & 1)*-50+(#a_00_5 & 1)*-50+(#a_00_6 & 1)*-50) >=12 }