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Port 6667 Details


known port assignments and vulnerabilities
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Port(s) Protocol Service Details Source
6667 tcp,udp irc IRC (Internet Relay Chat)

Many trojans/backdoors also use this port: Dark Connection Inside, Dark FTP, Host Control, NetBus worm , ScheduleAgent, SubSeven, Trinity, WinSatan, Vampire, Moses, Maniacrootkit, kaitex, EGO.
Backdoor.IRC.Flood [Symantec-2001-080313-3306-99]
Backdoor.Hacarmy.E [Symantec-2004-101417-2331-99]
W32.Spybot.EAS [Symantec-2004-093016-3632-99] - DDoS and backdoor capabilities, also attempts to steal confidential info. Uses port 6667/tcp.
Backdoor.Sdbot.AC [Symantec-2004-100415-4933-99] - backdoor trojan, uses port 6667/tcp.
Backdoor.Sdbot.AF [Symantec-2004-111811-0117-99] - backdoor trojan, uses port 6667/tcp.
Backdoor.Alnica [Symantec-2004-110315-5443-99] - backdoor trojan, uses port 6667/tcp to connect to IRC, also sends ICQ messages.
Backdoor.Maxload [Symantec-2004-110420-4659-99] - backdoor trojan, affects Linux and Unix computers ! Attempts to connect to IRC servers on port 6667/tcp.
Backdoor.Hacarmy.E [Symantec-2004-101417-2331-99] - backdoor trojan, uses port 6667/tcp.
Backdoor.Hacarmy.F [Symantec-2004-110511-0258-99] - backdoor trojan, connects to IRC servers on port 6667/tcp.
W32.Bofra.A@mm [Symantec-2004-110916-0038-99] - uses ports 1639 and 6667/tcp.
W32.Bofra.E@mm [Symantec-2004-111213-5143-99] - a mass-mailing worm, runs a HTTP server on port 1639/tcp, attempts to connect to IRC servers on port 6667/tcp.
W32.Cissi.W [Symantec-2005-012811-2022-99] - IRC bot worm with backdoor capabilities. Uses port 6667, propagates through network shares.
Backdoor.Lateda.B [Symantec-2005-011714-4950-99] - backdoor trojan with remote access capabilities. Connects to an IRC server on port 6667, opens a backdoor on port 9999/tcp.
W32.Linkbot.M [Symantec-2005-052109-2651-99] - opens a backdoor on port 6667/tcp. Also listens on port 113/tcp.
W32.Zotob.D [Symantec-2005-081609-4733-99] - a worm that opens a backdoor and exploits the MS Plug and Play Buffer Overflow vulnerability (MS Security Bulletin [MS05-039]) on port 445/tcp. Conects to IRC servers to listen for remote commands on port 6667/tcp. Also opens an FTP server on port 1117/tcp.
W32.Zotob.H [Symantec-2005-081717-2017-99] - a worm that opens a backdoor and exploits the MS Plug and Play Buffer Overflow vulnerability ([MS05-039]) on port 445/tcp. It runs and spreads using all current Windows versions, but only infects Windows 2000. The worm connects to IRC servers and listens for remote commands on port 6667/tcp. It opens port 69/udp to initiate TFTP transfers. It also opens a backdoor on remote compromised computers on port 8563/tcp.

Backdoor.Win32.Adverbot / Remote Stack Corruption - null instruction pointer read stack corruption when connecting to an IRC server Port 6667. The NetControl.File component allows connecting to server to IRC servers to file share or send messages under Menu/connect.
References: [MVID-2021-0003]

Backdoor.Win32.Whisper.b / Remote Stack Corruption - Whisper.b listens on TCP port 113 and connects to port 6667, deletes itself drops executable named rundll32.exe in Windows\System dir. The malware is prone to stack corruption issues when receiving unexpected characters of random sizes.
References: [MVID-2021-0039]
SG
6667 tcp trojan Acropolis, BlackRat, Dark FTP, Dark IRC, DataSpy Network X, Gunsan, InCommand, Kaitex, KiLo, Laocoon, Net-Devil, Reverse Trojan, ScheduleAgent, SlackBot, SubSeven , Subseven 2.1.4 DefCon 8, Trinity, Y3K RAT, yoyo Trojans
6667 udp trojan KiLo Trojans
6667 tcp DarkFTP [trojan] Dark FTP SANS
6667 tcp EGO [trojan] EGO SANS
6667 tcp irc Internet Relay Chat SANS
6667 tcp ircu IRCU SANS
6667 tcp kaitex Kaitex Trojan SANS
6667 tcp Maniacrootkit [trojan] Maniac rootkit SANS
6667 tcp Moses [trojan] Moses SANS
6667 tcp ScheduleAgent [trojan] ScheduleAgent SANS
6667 tcp trojans [trojan] Subseven 2.1.4 DefCon 8 SANS
6667 tcp SubSeven [trojan] SubSeven SANS
6667 tcp TheThing [trojan] The Thing (modified) SANS
6667 tcp Trinity [trojan] Trinity SANS
6667 tcp WinSatan [trojan] WinSatan SANS
2611-2612,6500,6667,27900 tcp,udp applications Black and White Portforward
6667 tcp,udp applications Championship Manager 3 Portforward
3783, 6500, 6667, 28900, 29900, 29901 tcp applications Civilization III Portforward
2033, 2056, 3783, 6500, 6667, 28900, 29900, 29001 tcp applications Civilization IV Portforward
80,6667,28910,29900,29920 tcp applications Command and Conquer Generals Portforward
80, 3783, 6500, 6515, 6667, 13139, 27900, 28900, 28910, 29900, 29901, 29920 tcp applications Command and Conquer Generals GameSpy Portforward
80,6667,28910,29900,29920 tcp applications Command and Conquer Zero Hour Portforward
80, 3783, 6500, 6515, 6667, 13139, 27900, 28900, 28910, 29900, 29901, 29920 tcp applications Command and Conquer Zero Hour GameSpy Portforward
2300-2400,6667,47624 tcp applications Cossacks II Portforward
3783, 6500, 6667, 28900, 29900-29901 tcp applications F.E.A.R. Gamespy Portforward
6667,28910 tcp applications Faces of War Portforward
6667, 3783, 27900, 28900, 29900, 29901, 13139, 6515, 6500 tcp applications GameSpy Arcade Portforward
6667,18067 tcp,udp applications Hero Online Portforward
80,6667,21000,40000-42000 tcp applications IL2-Sturmovik Ubi.com Portforward
80,6667,10308,40000-42000 tcp applications Lock On Modern Air Combat Ubi.com Portforward
6667,28800-29000 tcp,udp applications MSN Game Zone Portforward
5120-5300, 6500, 6667, 27900, 28900 udp applications Neverwinter Nights Portforward
80, 6667, 7777-7787, 8777-8787, 40000-42000 udp applications Rainbow Six 3 Raven Shield with Ubi.com Portforward
3783, 6500, 6667, 28900, 29900-29901 tcp applications Rome Total War Portforward
3783, 6515, 6667, 13139, 27900, 28900, 29900, 29901 tcp applications S.T.A.L.K.E.R. - Shadow of Chernobyl Portforward
3783, 6667, 28900, 29900, 29901 tcp applications Spellforce - The Order of Dawn Portforward
3040,6667 tcp applications Star Trek - Armada 2 Portforward
1234, 3658-3660, 6500, 27900, 28910, 3783, 6515, 6667, 13139, 28900, 29900-29901, 29920 tcp,udp applications Starwars Empire at War Portforward
6667, 9961, 17475, 27000-30000 tcp applications Test Drive Unlimited Portforward
3783, 6500, 6667, 28900, 29900-29901 tcp applications The Lord of the Rings-War of the Ring Gamespy Portforward
6667,28910 tcp applications True Crime Streets of L.A. Portforward
6667, 28910, 29900, 29901, 29920 tcp applications Warhammer 40000 - Dawn of War - Dark Crusade Portforward
6667,28910,29901,29920 tcp applications Warhammer 40000 - Dawn of War GotY Portforward
80, 5911, 6667, 28900, 29900, 29901 tcp applications Worms 4 - Mayhem Portforward
6667 tcp irc Internet Relay Chat Nmap
6667 tcp threat Alnica Bekkoame
6667 tcp threat Deftcode Bekkoame
6667 tcp threat Hacarmy Bekkoame
6667 tcp threat IRC Clients can connect to servers on this port. Bekkoame
6667 tcp threat IRC.Flood Bekkoame
6667 tcp threat IrcContact Bekkoame
6667 tcp threat Kaiten Bekkoame
6667 tcp threat Lateda Bekkoame
6667 tcp threat Maxload Bekkoame
6667 tcp threat Mindos Bekkoame
6667 tcp threat Sdbot Bekkoame
6667 tcp threat Spigot Bekkoame
6667 tcp voip VocalTec Internet Phone An alternate port other than 6670 used to connect to servers. Bekkoame
6667 tcp threat W32.Blatic Bekkoame
6667 tcp threat W32.Bofra Bekkoame
6667 tcp threat W32.Bropia Bekkoame
6667 tcp threat W32.Cissi Bekkoame
6667 tcp threat W32.HLLW.Gaobot Bekkoame
6667 tcp threat W32.HLLW.Nool Bekkoame
6667 tcp threat W32.HLLW.Studd Bekkoame
6667 tcp threat W32.HLLW.Warpigs Bekkoame
6667 tcp threat W32.Korgo Bekkoame
6667 tcp threat W32.Linkbot Bekkoame
6667 tcp threat W32.Mimail Bekkoame
6667 tcp threat W32.Mota Bekkoame
6667 tcp threat W32.Mydoom Bekkoame
6667 tcp threat W32.Mytob Bekkoame
6667 tcp threat W32.Opasa Bekkoame
6667 tcp threat W32.Protoride Bekkoame
6667 tcp threat W32.Randex Bekkoame
6667 tcp threat W32.Ruland Bekkoame
6667 tcp threat W32.Spybot Bekkoame
6667 tcp threat W32.Stubbot Bekkoame
6667 tcp threat W32.Wallz Bekkoame
6667 tcp threat W32.Zotob Bekkoame
6665-6669 tcp Internet Relay Chat (official) Wikipedia
6665-6669 tcp ircu IRCU IANA
6665-6669 udp Reserved IANA
84 records found
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Related ports: 3783  6500  6515  6660  6661  6662  6663  6664  6665  6666  6668  6669  27900  28900  29900  29901  6670  

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External Resources
SANS ISC: port 6667

Notes:
Port numbers in computer networking represent communication endpoints. Ports are unsigned 16-bit integers (0-65535) that identify a specific process, or network service. IANA is responsible for internet protocol resources, including the registration of commonly used port numbers for well-known internet services.
Well Known Ports: 0 through 1023.
Registered Ports: 1024 through 49151.
Dynamic/Private : 49152 through 65535.

TCP ports use the Transmission Control Protocol, the most commonly used protocol on the Internet and any TCP/IP network. TCP enables two hosts to establish a connection and exchange streams of data. TCP guarantees delivery of data and that packets will be delivered in the same order in which they were sent. Guaranteed communication/delivery is the key difference between TCP and UDP.

UDP ports use the Datagram Protocol. Like TCP, UDP is used in combination with IP (the Internet Protocol) and facilitates the transmission of datagrams from one computer to applications on another computer, but unlike TCP, UDP is connectionless and does not guarantee reliable communication; it's up to the application that received the message to process any errors and verify correct delivery. UDP is often used with time-sensitive applications, such as audio/video streaming and realtime gaming, where dropping some packets is preferable to waiting for delayed data.

When troubleshooting unknown open ports, it is useful to find exactly what services/processes are listening to them. This can be accomplished in both Windows command prompt and Linux variants using the "netstat -aon" command. We also recommend runnig multiple anti-virus/anti-malware scans to rule out the possibility of active malicious software. For more detailed and personalized help please use our forums.

Please use the "Add Comment" button below to provide additional information or comments about port 6667.
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by whitak3r - 2020-11-27 02:54
Why was there a large portion of hits in the first half of the chart, but it's almost 0 now. What changed?
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