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Port 5277 Details
known port assignments and vulnerabilities
threat/application/port search:
| Port(s) |
Protocol |
Service |
Details |
Source |
| 5277 |
tcp |
trojan |
WinJank [Symantec-2003-071117-5539-99] (2003.07.11) - a backdoor trojan horse that allows unauthorized access to your computer, listens to port 5277 TCP by default.
WinShell trojan also uses this port.
Backdoor.Win32.WinShell.30 / Remote Stack Buffer Overflow / Missing Authentication - WinShell.30 listens on TCP port 5277 for commands. Attackers or responders who can reach the infected host can trigger a buffer overflow by sending a large string of junk characters in place of an expected command. This will overwrite EIP and potentially allow control of the malwares execution flow. Moreover, WinShell.30 also lacks any type of authentication for inbound connections, which can allow anyone to take over the infected system.
References: [MVID-2021-0040]
Backdoor.Win32.Wisell / Unauthenticated Remote Command Execution - the malware listens on TCP port 5277, third-party attackers who can reach the system can execute OS commands further compromising the already infected system. Sending the exclaimation point character "!" will not only quit the shell, but also effectively terminate the backdoor.
References: [MVID-2021-0234]
Backdoor.Win32.Winshell.5_0 / Weak Hardcoded Credentials - the malware is UPX packed, listens on TCP port 5277 and requires authentication for remote access. However, the password "123456789" is weak and hardcoded within the PE file. Unpacking the executable, easily reveals the cleartext password.
References: [MVID-2022-0633] |
SG
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| 5277 |
tcp |
threat |
WinJank |
Bekkoame
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| 5120-5300 |
udp |
applications |
Neverwinter Nights 2 |
Portforward
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| 5273-5279 |
tcp,udp |
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Unassigned |
IANA
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4 records found
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External Resources
SANS ISC: port 5277
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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