rule HackTool_Linux_SuspUnixReShellCmd_L{ meta: description = "HackTool:Linux/SuspUnixReShellCmd.L,SIGNATURE_TYPE_CMDHSTR_EXT,07 00 07 00 0a 00 00 " strings : $a_00_0 = {6f 00 70 00 65 00 6e 00 73 00 73 00 6c 00 } //1 openssl $a_00_1 = {73 00 5f 00 63 00 6c 00 69 00 65 00 6e 00 74 00 } //1 s_client $a_00_2 = {2d 00 71 00 75 00 69 00 65 00 74 00 } //1 -quiet $a_00_3 = {2d 00 63 00 6f 00 6e 00 6e 00 65 00 63 00 74 00 } //1 -connect $a_00_4 = {64 00 6f 00 20 00 73 00 68 00 20 00 26 00 26 00 20 00 62 00 72 00 65 00 61 00 6b 00 3b 00 } //1 do sh && break; $a_00_5 = {64 00 6f 00 6e 00 65 00 20 00 32 00 3e 00 26 00 31 00 } //1 done 2>&1 $a_00_6 = {73 00 68 00 20 00 2d 00 63 00 } //1 sh -c $a_00_7 = {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_8 = {6c 00 6f 00 63 00 61 00 6c 00 68 00 6f 00 73 00 74 00 } //-50 localhost $a_00_9 = {30 00 2e 00 30 00 2e 00 30 00 2e 00 30 00 } //-50 0.0.0.0 condition: ((#a_00_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+(#a_00_6 & 1)*1+(#a_00_7 & 1)*-50+(#a_00_8 & 1)*-50+(#a_00_9 & 1)*-50) >=7 }