mini.drl

//package com.rules.trojan

import com.model.problem.Trojan
import com.model.other.Time
import com.model.other.Type
import com.model.other.Item

// This rule is a naive simple to detect Trojan
// Key Logic:
// 1. Usually a host machine within trojan upload more frequently than download
// 1. 通常来说在木马发作期间，感染木马的机器上传数据的次数比下载数据的次数多
// 2. Usually a host machine within trojan upload package with larger size then dowonload
// 2. 通常来说在木马发作期间，感染木马的机器上传数据的总量比下载数据的总量大
// 3. Usually a host machine within trojan upload package with larger size then which without trojan
// 3. 通常来说在木马发作期间，感染木马的机器上传数据的次数，比其他机器的平均上传次数多
// 4. Usually a host machine within trojan upload more frequently than which without trojan
// 4. 通常来说在木马发作期间，感染木马的机器上传数据的总量，比其他机器的平均上传总量大
// Only when the data suits all four key logic, then the host machine would be detected as the trojan infected

//=========================================================================
// Set the runtime environment
//=========================================================================
rule "SET: begin detection time"
   salience 100
   lock-on-active true
   dialect "mvel"
   when
     $time : Time()
   then
     $time.setbeginTime(1490630400)
     System.out.println("  [Rule]  SET: begin detection time 1490630400")
     update($time)
end

rule "SET: end detection time"
   salience 100
   lock-on-active true
   dialect "mvel"
   when
     $time : Time()
   then
     $time.setendTime(1490634000)
     System.out.println("  [Rule]  SET: end detection time 1490634000") 
     update($time)
end

rule "VERIFY: verify the time operation"
   //lock-on-active true
   dialect "mvel"
   when
     $time : Time(beginTime == 1490630400 && endTime == 1490634000)
   then
     System.out.println("  [Rule]  VERIFY: verify the time operation :Correct")
end

rule "SET: detection type"
   lock-on-active true
   dialect "mvel"
   when
     $type : Type()
   then
     $type.setType("Trojan")
     System.out.println("  [Rule]  SET: end detection type Trojan")
     update($type)
end


//==========================================================================
// Set the statistical data required for judgement
//=========================================================================

rule "Action: Acquire the TCP upload flow amount for each IP"
   lock-on-active true
   salience 10
   dialect "mvel"
   when
     $item : Item()
     $time : Time()
   then
     $item.SS_TCP_UPLOAD_SIZE_SRCIP($time,"Default")
     System.out.println("  [Rule]  Action: Acquire the TCP upload flow amount: "+$item.obj)
     //update($item)
end

rule "Action: Acquire the TCP download flow amount for each IP"
   lock-on-active true
   salience 10
   dialect "mvel"
   when
     $item : Item()
     $time : Time()
   then
     $item.SS_TCP_DOWNLOAD_SIZE_DSTIP($time,"Default")
     System.out.println("  [Rule]  Action: Acquire the TCP download flow amount: "+$item.obj)
     //update($item)
end

rule "Action: Acquire the TCP upload flow times for each IP"
   lock-on-active true
   salience 10
   dialect "mvel"
   when
     $item : Item()
     $time : Time()
   then
     $item.SS_TCP_UPLOAD_COUNT_SRCIP($time,"Default")
     System.out.println("  [Rule]  Action: Acquire the TCP upload flow times: "+$item.obj)
     //update($item)
end

rule "Action: Acquire the TCP download flow times for each IP"
   lock-on-active true
   salience 10
   dialect "mvel"
   when
     $item : Item()
     $time : Time()
   then
     $item.SS_TCP_DOWNLOAD_COUNT_DSTIP($time,"Default")
     System.out.println("  [Rule]  Action: Acquire the TCP download flow times: "+$item.obj)
     //update($item)
end