ICAS III

安裝說明

必要目錄

• bin [完整]
• hadoop [完整]
• www [完整]
• report
  • black
  • dot
  • svg
• log_input
  • idp8200
  • nk7admin
  • snort
• workspace [可為空]

資料流程

一、DataCheck

• 檢查各資料夾內是否有資料
• 有資料則依各入侵偵測格式進行正規化
• 輸出

1 snort

[**] [1:2189:3] BAD-TRAFFIC IP Proto 103 PIM [**]
[Classification: Detection of a non-standard protocol or event] [Priority: 2] 
05/17-08:30:14.750704 140.110.138.253 -> 224.0.0.13
PIM TTL:1 TOS:0xC0 ID:4076 IpLen:20 DgmLen:58
[Xref => http://cve.mitre.org/cgi-bin/cvename.cgi?name=2003-0567][Xref => http://www.securityfocus.com/bid/8211]

先轉化成單筆警訊一行 ==>

• 格式

  ids編號;sid;說明 ;分類名稱;嚴重性;月;日;時;分;秒;  來源:埠  ; 目的：埠  ; 協定;
  

• 範例

  1;2189;BAD-TRAFFIC IP Proto 103 PIM ;Detection of a non-standard protocol or event;2;05;17;08;30;14;140.110.138.253;224.0.0.13;PIM;
  

2 Idp8200

• 設定編號為

• 原始格式

  Time Received ## Src Addr ## Dst Addr ## Action ## Protocol ## Dst Port ## interface ## Description ## Severity
  

• 範例

  2003/8/11 13:05,140.113.130.221,0.0.0.0,Accepted,TCP,65432,'interface=eth2',FTP: Format String in Command,Major
  2003/8/11 13:05,140.113.130.221,phe96.sro.nchc.org.tw,Accepted,TCP,65432,'interface=eth2',FTP: Format String in Command,Major
  

3 NK7Admin

• 原始格式

  編號 ## 名稱 ## 來源位址 ## 目的位址 ##  開始時間 ##  總數 ## 來源埠 ##  目的埠
  

• 範例

  1,TCP SYN,60.173.26.116,140.110.127.253,2011/3/1 14:41,1,6000,9415
  2,UDP PORT SCAN,168.95.1.1,140.110.104.84,2011/3/1 14:41,1,53,34953
  

輸出格式

• icas III 正規化後格式

0 ids來源;

1 警訊識別id ;

2 攻擊說明 ;

3 分類 ;

4 嚴重性（1最嚴重~3普通） ;

5 年月日 ;

6 時分秒 ;

7 來源ip ;

8 目標ip ;

9 目標port

• class (分類資訊) 與 sig_id (特徵碼id 編號) 是兩台硬體 ids 沒有的資訊，會補 0 顯示
• 嚴重性 ＝ 1~3, 1最嚴重
• 偵測裝置編號 : 1=snort, 2=idp8200, 3=nk7admin

ps:

• icas II (舊)

1	2	3	4	5	6	7	8	9	10	11	12	13	14
0 ids 來源;	1 警訊識別id ;	sid的版本 ;	說明 ;	分類 ;	嚴重性（1最嚴重） ;	月 ;	日 ;	時 ;	分 ;	秒 ;	來源ip ;	目標ip ;	封包協定 ;

二、 IntegrateAlert

警訊整合

• 於 hadoop 上運作
• 將正規化的資料當輸入
• 呼叫 Classify 作分類簡化

	String[][] class_str = { { // 1 Detection
			"Detection of a Network Scan", "Decode of an RPC Query",
					"A client was using an unusual port",
					"Detection of a non-standard protocol or event" },
			// 2 attempt info
			{
					"Attempted Information Leak",
					"Information Leak",
					"Large Scale Information Leak",
					"Attempted Denial of Service",
					"Attempted User Privilege Gain",
					"Attempted Administrator Privilege Gain",
					"An attempted login using a suspicious username was detected",
					"Attempt to login by a default username and password",
					"Unsuccessful User Privilege Gain" },

			// 3 user gain
			{ "Successful User Privilege Gain" },
			// 4 admin gain
			{ "Successful Administrator Privilege Gain" },

			// 5 attack
			{ "Misc Attack", "A suspicious filename was detected",
					"A system call was detected",
					"Executable code was detected", "SCORE! Get the lotion!",
					"access to a potentially vulnerable web application",
					"Web Application Attack",
					"Potential Corporate Privacy Violation" },
			// 6 dos
			{ "Denial of Service", "Detection of a Denial of Service Attack" },
			// 7 Trojan
			{ "A Network Trojan was detected" },
			// 8 Info
			{ "Not Suspicious Traffic", "Unknown Traffic",
					"Potentially Bad Traffic",
					"A suspicious string was detected",
					"Generic Protocol Command Decode", "Generic ICMP event",
					"Misc activity", "A TCP connection was detected" } };

• 運算結果格式

0 攻擊者ip -> 目標ip

1 嚴重性(1~3, 1最嚴重)

2 開始日期_時間點~結束日期_時間點

3 [分類資訊,...]

4 [sig_id,...]

5 [攻擊說明1,攻擊說明2,...]

6 [目標port1,目標port2, ...]

7 [偵測裝置編號,...]

8 "整合總筆數"-"整合分類筆數"-"整合sig_id編號筆數"

map output

key : src_ip - dst_ip
val : date @@ time @@ class_id @@ ids @@ s-id @@ priority @@ port @@ description

reduce output

key: src_ip -> des_ip
values: priority @@ t1~tn @@ [class,...] @@ [sig_id,...] @@ [attact,...] @@
        [port,...] @@ [ids,...] @@
        "tatal_count"-"class_count"-"sig_id_count"

sample

• input

1;0;FTP: Format String in Command;no;1;2003811;130500;140.113.130.221;0.0.0.0;65432;
2;0;FTP: Format String in Command;no;1;2003811;130500;140.113.130.221;0.0.0.0;65432;
3;1;FTP: Format String in Command;no;1;2003811;130500;140.113.130.222;10.10.0.2;65432;
1;2;FTP: Format String in ;no;1;2003811;150500;140.113.130.221;phe96.sro.nchc.org.tw;65432;
2;2;FTP: Format String ;no;1;2003811;160500;140.113.130.221;phe96.sro.nchc.org.tw;65432;
3;1;FTP: Format ;no;1;2003811;130500;140.113.130.221;phe96.sro.nchc.org.tw;65432;

• result

140.113.130.221->0.0.0.0  @@1@@2003811_130500~2003811_130500@@[0]@@[0]@@[FTP: Format String in Command]@@[65432]@@[1, 2]@@2-1-1
140.113.130.221->phe96.sro.nchc.org.tw  @@1@@2003811_130500~2003811_160500@@[0]@@[2, 1]@@[FTP: Format String in , FTP: Format String , FTP: Format ]@@[65432]@@[1, 2, 3]@@3-1-2
140.113.130.222->10.10.0.2  @@1@@2003811_130500~2003811_130500@@[0]@@[1]@@[FTP: Format String in Command]@@[65432]@@[3]@@1-1-1

三、 Aggreggate

• 將運算結果從 hdfs 下載到 local
• dot -> 繪圖-> svg 攻擊圖
• 黑名單
• 警訊列表

DotGraph

繪圖

digraph G { size ="8,0"; node[style=filled,peripheries=2,color="lightskyblue"]; 
{"140.113.130.221"}->{"0.0.0.0"}[color=red, label="NIDS \n \n[FTP: Format String in Command]"];
{"140.113.130.221"}->{"phe96.sro.nchc.org.tw"}[color=red, label="NIDS \n \n[FTP: Format String in Command]"];
{"168.150.177.164"}->{"239.255.255.250"}[color=red, label="NIDS \n \n[SCAN UPnP service discover attempt ]"];
{"168.150.177.165"}->{"168.150.177.166"}[color=red, label="NIDS \n \n[NETBIOS SMB IPC$ unicode share access ]"];
{"168.95.1.1"}->{"140.110.104.84"}[color=red, label="NIDS \n \n[UDP PORT SCAN]"];
{"60.173.26.116"}->{"140.110.127.253"}[color=red, label="NIDS \n \n[TCP SYN]"];
}

list

• 列表格式

[ "來源IP " , "目標IP " , "起始時間" , "結束時間" , "嚴重性" , "IDS", "總數" , "說明"]

blacklist

0 @@	1 @@	2 @@	3 @@	4 @@	5 @@	6 @@	7 @@ 8
77.68.104.162->140.110.134.198 @@	p @@	20110701_124104~20110701_130001@@
[class]@@	[sid]@@	[(spp_ssh) Protocol mismatch ]@@	[ port ]@@	[ids]@@	1429-1-1

sip @@ dip @@ port @@ time @@ detail @@ ids @@ count

試算結果

06/09

• 其中 snort 警訊 1081 筆，idp8200 警訊 1000 筆， nk7admin 警訊 1000 筆，共 3081 筆資訊

• 整合後得 654 筆輸出結果，以及一張攻擊圖，

• 運算時間為 34 秒

• 之後會將輸出結果導入資料庫，並且最佳化攻擊圖。