🧂 前言

今天會介紹另一個network forensic 工具-Zui ，另外也會介紹一下 Zui 當中使用到的 Zeek 以及Suricata pcap分析工具

Zui

下載連結：https://zui.brimdata.io/docs

Zui 它的前身是Brim ， 是一款用於網路流量分析的工具，它提供了使用者友善的圖形化介面，可以讓使用者能夠快速分析與視覺化大量網路流量

這個工具裡面整合了兩個網路封包分析工具，分別是Zeek、Suricata

Zeek

連結：https://github.com/zeek/zeek

Zeek 是一個開源的網路安全監控工具，以強大的資料記錄功能聞名。它能將原始的 pcap 封包檔轉換成結構化的日誌，方便在 Zeek 內查詢與分析，快速提供網路行為的概覽。

指令如下

zeek -C -r B33F50up_blog.pcapng

他會產生以下檔案

• conn.log : 記錄了所有的網路連接
• dns.log：記錄了所有的 DNS查詢活動
• files.log：記錄了通過 HTTP 傳輸的檔案
• http.log：這是一個 HTTP 協議的流量日誌，記錄了網頁瀏覽和API 請求
• packet_filter.log：記錄了封包過濾器的配置

以下是http.log 的形式

#separator \x09
#set_separator	,
#empty_field	(empty)
#unset_field	-
#path	http
#open	2025-09-27-22-26-52
#fields	ts	uid	id.orig_h	id.orig_p	id.resp_h	id.resp_p	trans_depth	method	host	uri	referrer	version	user_agent	origin	request_body_len	response_body_len	status_code	status_msg	info_code	info_msg	tags	username	password	proxied	orig_fuids	orig_filenames	orig_mime_types	resp_fuids	resp_filenames	resp_mime_types
#types	time	string	addr	port	addr	port	count	string	string	string	string	string	string	string	count	count	count	string	count	string	set[enum]	string	string	set[string]	vector[string]	vector[string]	vector[string]	vector[string]	vector[string]	vector[string]
1754678828.272075	CAuRo91flufxXutAke	100.112.165.2	60665	192.168.1.125	5000	1	GET	192.168.1.125:5000	/	-	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	-	0	24859	200	OK	-	-	(empty)	-	-	-	-	-	-	FA9Bk7Ikrr1LVrys	-	text/html
1754678857.820963	CIRhMK1X97Z1MzFRD1	100.112.165.2	60676	192.168.1.125	5000	1	POST	192.168.1.125:5000	/ping	http://192.168.1.125:5000/	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	http://192.168.1.125:5000	15	727	200	OK	-	-	(empty)	-	-	-	FIUrzJ3sbt6deYBXf3	-	text/plain	FyILV9CHbcmUMGtc6	-	text/json
1754678865.293310	CZnidTF5LIgaMzbRe	100.112.165.2	60677	192.168.1.125	5000	1	POST	192.168.1.125:5000	/system	http://192.168.1.125:5000/	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	http://192.168.1.125:5000	141	185	200	OK	-	-	(empty)	-	-	-	Fvs6lg41SIyuYsReh2	-	-	FqFYD91bNrEWRNR501	-	text/json
1754679070.738945	CWlCIn4qK2ntw6CuJl	100.112.165.2	60757	192.168.1.125	5000	1	GET	192.168.1.125:5000	/	-	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	-	0	24859	200	OK	-	-	(empty)	-	-	-	-	-	-	FG2QH72aF2jeG9CYC9	-	text/html
1754679165.228123	C5V1Fn3nYAvFuSQeE	100.112.165.2	60778	192.168.1.125	5000	1	POST	192.168.1.125:5000	/system	http://192.168.1.125:5000/	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	http://192.168.1.125:5000	141	287	200	OK	-	-	(empty)	-	-	-	FnwtMr2TZ1qIS6LLmj	-	-	Fq827u4xABcX563I21	-	text/json
1754679173.669096	CWXpsv3zrBE7Lx66Sg	100.112.165.2	60779	192.168.1.125	5000	1	POST	192.168.1.125:5000	/system	http://192.168.1.125:5000/	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	http://192.168.1.125:5000	144	13177	200	OK	-	-	(empty)	-	-	-	FxvTqN3Pid7VWQP7y3	-	-	Fi4rGH32Y4P77kznf3	-	text/json
1754679180.268390	Co6odn3WTbf9HKGcO6	100.112.165.2	60780	192.168.1.125	5000	1	POST	192.168.1.125:5000	/ping	http://192.168.1.125:5000/	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	http://192.168.1.125:5000	15	728	200	OK	-	-	(empty)	-	-	-	FYW00SjDihqYC30xe	-	text/plain	FQGbYm3SH1rsO8o9ng	-	text/json
1754679196.383809	CGjLWoznypKV0Pgt	100.112.165.2	60809	192.168.1.125	5000	1	POST	192.168.1.125:5000	/ping	http://192.168.1.125:5000/	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	http://192.168.1.125:5000	16	738	200	OK	-	-	(empty)	-	-	-	FVCJDglco6ai9lzi4	-	text/plain	FB2a4L3x3ZELSSdCQ1	-	text/json
1754679223.696243	C0s1KA7ZrfQvnIpj	100.112.165.2	60865	192.168.1.125	5000	1	POST	192.168.1.125:5000	/ping	http://192.168.1.125:5000/	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	http://192.168.1.125:5000	30	851	200	OK	-	-	(empty)	-	-	-	FA2p79sD6MkhyaCEb	-	text/plain	FwUGICEULGQRyBs78	-	text/json
1754679257.891805	CtwrhY2Kw9bscBOsX7	100.112.165.2	60874	192.168.1.125	5000	1	POST	192.168.1.125:5000	/ping	http://192.168.1.125:5000/	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	http://192.168.1.125:5000	34	755	200	OK	-	-	(empty)	-	-	-	FybSTDKXBk5dCiaYl	-	text/plain	F55jsD1S1vWW8IVBY4	-	text/json
1754679265.650887	CFgfqH2IasZxXsovkd	100.112.165.2	60875	192.168.1.125	5000	1	POST	192.168.1.125:5000	/ping	http://192.168.1.125:5000/	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	http://192.168.1.125:5000	30	869	200	OK	-	-	(empty)	-	-	-	FtvRcZ3D5kRIP1ijy5	-	text/plain	FTYdr5iKtJX11Efma	-	text/json
1754679315.090163	CEAuN63ly0lHS2zRrj	100.112.165.2	60895	192.168.1.125	5000	1	POST	192.168.1.125:5000	/ping	http://192.168.1.125:5000/	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	http://192.168.1.125:5000	30	869	200	OK	-	-	(empty)	-	-	-	Fyt7jP30AEKPs4C0Uj	-	text/plain	F0zHt852ycC25Gpkf	-	text/json
1754679319.217264	CRWcyt2bda4K3g6Xub	100.112.165.2	60912	192.168.1.125	5000	1	POST	192.168.1.125:5000	/ping	http://192.168.1.125:5000/	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	http://192.168.1.125:5000	36	900	200	OK	-	-	(empty)	-	-	-	FUAgus1sr4pPeGnidg	-	text/plain	FqnOWw20dfXD0koyIi	-	text/json
1754679354.845803	CulPOq3A9IP8ab4Zqd	100.112.165.2	60981	192.168.1.125	5000	1	POST	192.168.1.125:5000	/ping	http://192.168.1.125:5000/	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	http://192.168.1.125:5000	48	769	200	OK	-	-	(empty)	-	-	-	FZw17aZHAnZltVkJ	-	text/plain	FQvAYSOVPIbUCfRm7	-	text/json
1754679406.575000	C9iy0scrJKJuDpi07	100.112.165.2	61207	192.168.1.125	5000	1	POST	192.168.1.125:5000	/ping	http://192.168.1.125:5000/	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	http://192.168.1.125:5000	49	2621	200	OK	-	-	(empty)	-	-	-	FiejrYnJjwTaJ5db7	-	text/plain	FKZoSb4yddnL4uzkZf	-	text/json
1754679827.575533	CV2dqm3aNuGOi4EC0h	100.112.165.2	63113	192.168.1.125	5000	1	POST	192.168.1.125:5000	/ping	http://192.168.1.125:5000/	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	http://192.168.1.125:5000	36	912	200	OK	-	-	(empty)	-	-	-	FDaXYp2bh8hJpHMYCi	-	text/plain	FdsBU41nDrcCQ9mTV9	-	text/json
1754679851.757452	CWSzgl4AsTyJVyRpJf	100.112.165.2	63213	192.168.1.125	5000	1	POST	192.168.1.125:5000	/ping	http://192.168.1.125:5000/	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	http://192.168.1.125:5000	44	800	200	OK	-	-	(empty)	-	-	-	FAGwfWDdjCLhcrZX2	-	text/plain	F89dhl1uFy7r4oRtf	-	text/json
1754679859.655497	C0LErP2jTxCqKmUESd	100.112.165.2	63216	192.168.1.125	5000	1	POST	192.168.1.125:5000	/ping	http://192.168.1.125:5000/	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	http://192.168.1.125:5000	47	781	200	OK	-	-	(empty)	-	-	-	FoNYJj2QlLyZkd9tEe	-	text/plain	FUaGCH2RbcOlDQcaOi	-	text/json
1754679875.655339	CqC0qj2SMoQnSfaju6	100.112.165.2	63217	192.168.1.125	5000	1	POST	192.168.1.125:5000	/ping	http://192.168.1.125:5000/	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	http://192.168.1.125:5000	31	762	200	OK	-	-	(empty)	-	-	-	FRGjia4iHeyPzIDRC3	-	text/plain	FwGgDTGi2gHDik2P5	-	text/json
1754679999.499748	CtN1Vk4RrwIRGOgwHc	100.112.165.2	63280	192.168.1.125	5000	1	POST	192.168.1.125:5000	/ping	http://192.168.1.125:5000/	1.1	Mozilla/5.0 (Macintosh; Intel Mac OS X 10_15_7) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/139.0.0.0 Safari/537.36	http://192.168.1.125:5000	142	836	200	OK	-	-	(empty)	-	-	-	FFJx4j4PnbpIi0mfD6	-	text/plain	FYpDmc37JMpCuz4Zac	-	text/json
#close	2025-09-27-22-26-52

另外他也會根據 pcap 檔產生其他log ，參考網址：https://docs.zeek.org/en/master/logs/index.html

Suricata

連結：https://suricata.io/

Suricata 是一個開源的入侵偵測系統（IDS）與入侵防禦系統（IPS），以深度封包檢測、流量分析與威脅偵測聞名。能使用 Suricata 的龐大規則集快速評估網路資料並辨識異常。

指令如下

suricata -r B33F50up_blog.pcapng 

他會產生四個檔案

• eve.json : Suricata的結構化日誌檔案，包含多種事件類型的詳細記錄
• fast.log : Suricata 快速警報日誌，包含檢測到的安全威脅警報
• stats.log : Suricata 運行統計資料，包含詳細的系統運行統計
• suricata.log : Suricata 主要運行日誌，包含系統啟動和運行資訊

以下是 fast.log 資訊

08/09/2025-02:53:47.165861  [**] [1:2019284:3] ET ATTACK_RESPONSE Output of id command from HTTP server [**] [Classification: Potentially Bad Traffic] [Priority: 2] {TCP} 192.168.1.125:5000 -> 100.112.165.2:60865
08/09/2025-02:56:49.767871  [**] [1:2002034:13] ET ATTACK_RESPONSE Possible /etc/passwd via HTTP (linux style) [**] [Classification: Information Leak] [Priority: 2] {TCP} 192.168.1.125:5000 -> 100.112.165.2:61207

總結來說 Zui 的做法是先用 brimcap 將 pcap 送到 Zeek/Suricata 做 summary/log，在 Zui 內用 correlation view、alert 視窗、或 detail pane 分析事件與原始封包。

所以只要將pcap 封包丟進去 zeek ，他就會開始進行分析

分析完後按下Query Pool 就可以看到視覺化的頁面

另外 Zui 使用 Zed（或稱 Zed query / SuperSQL）來做過濾與轉換查詢可以更快處理大量資料

以下分享幾個操作

首先可以篩選出Suricata 警報

event_type=="alert" #可篩選出 Suricata 警報

也有像wireshark 一樣可以篩選 ip scr or ip dst

id.orig_h==100.112.165.2 and id.resp_p==53 #來源ip = 100.112.165.2 目標port = 53

另外他也可以進行統計與排序

count() by id.resp_p | sort -r  # 對目標port 進行統計，並降冪排序

對你想要篩選的資料按右鍵可以自動生成查詢指令

最後也可以下載官方提供預先寫好的查詢

連結：https://github.com/brimdata/brimcap?tab=readme-ov-file#brimcap-queries

下載後queries.json 後按下+的藍色按鈕，點選Import Queries

把剛剛下載的json 檔丟進去，就會匯入預先寫好的query

總結

今天介紹了Zui 以及其中 Zeek 與Suricata功能，也有分享 Zui 的基本操作，Zui 在解一些CTF 題時也會有奇效，雖然沒辦法查看詳細封包內容，但在快速查詢可疑行為或可疑流量時會很好用。