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Port 31337 Details

known port assignments and vulnerabilities

threat/application/port search:

Port(s)	Protocol	Service	Details	Source
31337	tcp,udp	Back Orifice	This port number means "elite" in hacker/cracker spelling (3=E, 1=L, 7=T) and because of the special meaning is often used for interesting stuff... Many backdoors/trojans run on this port, the most notable being Back Orifice. Here are some others that run on the same port: Back Fire, Baron Night, Beeone, BO client, BO Facil, BO spy, BO2, cron / crontab, Freak88, Freak2k, icmp_pipe.c, Sockdmini, ADMworm, bindshell, Elite, Gummo. Buffer overflow in the Private Communications Transport (PCT) protocol implementation in the Microsoft SSL library, as used in Microsoft Windows NT 4.0 SP6a, 2000 SP2 through SP4, XP SP1, Server 2003, NetMeeting, Windows 98, and Windows ME, allows remote attackers to execute arbitrary code via PCT 1.0 handshake packets. References: [CVE-2003-0719] aMSN (aka Alvaro's Messenger) 0.96 and earlier allows remote attackers to cause a denial of service (application crash) by sending invalid data to TCP port 31337. References: [CVE-2007-2195] [BID-23583] [OSVDB-39116] Stack-based buffer overflow in the pr_ctrls_recv_request function in ctrls.c in the mod_ctrls module in ProFTPD before 1.3.1rc1 allows local users to execute arbitrary code via a large reqarglen length value. References: [CVE-2006-6563], [EDB-3333], [EDB-3330], [BID-21587] Backdoor.Win32.Small.vjt / Unauthenticated Remote Command Execution - the malware listens on TCP port 31337. Third-party attackers who can reach the system can execute OS commands or programs further compromising the already infected machine. References: [MVID-2021-0337] .Net Remoting, Terraria, ncat, a netcat alternative Eldim is a secure file upload proxy (IANA official)	SG
31337	tcp		Back Orifice - remote administration tool (often Trojan horse) (unofficial)	Wikipedia
31337	tcp	trojan	ADM worm, Back Fire, Back Orifice (Lm), Back Orifice russian, BlitzNet, BO client, BO Facil, BO2, Freak88, Freak2k, NoBackO	Trojans
31337	udp	trojan	Back Orifice, Deep BO	Trojans
31337	tcp	ADMworm	[trojan] ADM worm	SANS
31337	tcp	BackFire	[trojan] Back Fire	SANS
31337	tcp	BackOrifice1.20patches	[trojan] Back Orifice 1.20 patches	SANS
31337	tcp	BackOrifice(Lm)	[trojan] Back Orifice (Lm)	SANS
31337	tcp	BackOrificerussian	[trojan] Back Orifice russian	SANS
31337	tcp	BaronNight	[trojan] Baron Night	SANS
31337	tcp	Beeone	[trojan] Beeone	SANS
31337	tcp	bindshell	[trojan] bindshell	SANS
31337	tcp	BO2	[trojan] BO2	SANS
31337	tcp	BOclient	[trojan] BO client	SANS
31337	tcp	BOFacil	[trojan] BO Facil	SANS
31337	tcp	BOspy	[trojan] BO spy	SANS
31337	tcp	cron/crontab	[trojan] cron / crontab	SANS
31337	tcp	DeepBO	[trojan] Deep BO	SANS
31337	tcp	Elite	Sometimes interesting stuff can be found here here	SANS
31337	tcp	Freak2k	[trojan] Freak2k	SANS
31337	tcp	Freak88	[trojan] Freak88	SANS
31337	tcp	Gummo	[trojan] Gummo	SANS
31337	tcp	icmp_pipe.c	[trojan] icmp_pipe.c	SANS
31337	tcp	LinuxRootkitIV	[trojan] Linux Rootkit IV	SANS
31337	udp	BackOrifice	cDc Back Orifice remote admin tool	SANS
31337	udp	BackOrifice	[trojan] Back Orifice	SANS
31337	tcp	Elite	Sometimes interesting stuff can be found here	Nmap
31337	udp	BackOrifice	cDc Back Orifice remote admin tool	Nmap
31337	udp	BackOrifice	[trojan] cDc Back Orifice remote admin tool	Neophasis
31337	tcp	psybnc	[trojan] psybnc	Neophasis
31337	tcp	threat	Back Orifice	Bekkoame
31337	tcp	threat	Emcommander	Bekkoame
31337	tcp	threat	Sockdmini	Bekkoame
31337	tcp	threat	W32.HLLW.Gool	Bekkoame
31337	udp	threat	Back Orifice Back Orifice is a backdoor program that commonly runs at this port. Scans on this port are usually looking for Back Orifice.	Bekkoame
31337	udp	threat	Deep BO	Bekkoame
31030-31399	tcp,udp		Unassigned	IANA

37 records found

SG security scan: port 31337

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Related ports: 1337

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External Resources
SANS ISC: port 31337

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.

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by anonymous - 2015-07-13 19:51

RedPhone is using TCP port 31337 for call initiation.