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Port 1111 Details
known port assignments and vulnerabilities
threat/application/port search:
| Port(s) |
Protocol |
Service |
Details |
Source |
| 1111 |
tcp |
trojans |
Trojans that use this port:
Backdoor.AIMvision [Symantec-2002-101713-3321-99] (2002.10.17) - remote access trojan. Affects all current Windows versions.
Backdoor.Ultor [Symantec-2002-061316-4604-99] (2002.06.13) - remote access trojan. Affects Windows, listens on port 1111 or 1234.
Backdoor.Daodan - VB6 remote access trojan, 07.2000. Affects Windows.
W32.Suclove.A@mm [Symantec-2005-092612-2130-99] (2005.09.25) - a mass-mailing worm with backdoor capabilities that spreads through MS Outlook and MIRC. Opens a backdoor and listens for remote commands on port 1111/tcp.
Daodan, Tport trojans also use this port.
The Administration Service (FMSAdmin.exe) in Macromedia Flash Media Server 2.0 r1145 allows remote attackers to cause a denial of service (application crash) via a malformed request with a single character to port 1111.
References: [CVE-2005-4216], [BID-15822]
Backdoor.Win32.Agent.cy / Weak Hardcoded Credentials - the malware listens on TCP port 1111, drops an executable named "Spoolsw.exe" under SysWOW64 dir that runs with SYSTEM integrity. The password "TrFsB-RuleZ" is stored in plaintext and can be easily found running strings util against the malware executable.
References: [MVID-2021-0207]
Backdoor.Win32.Jokerdoor / Remote Stack Buffer Overflow - The malware listens on TCP port 1111 and drops an randomly named executable E.g. xmutfeb.exe etc. Third party attackers who can reach an infected system can send a junk payload and trigger a classic stack buffer overflow overwriting the EBP, EIP registers and structured exception handler (SEH). When connecting you will get a "connected" server response, then we supply our payload as a parameter prefixed by "DOS" as running commands result in error.
References: [MVID-2021-0390]
Backdoor.Win32.SubSeven.c / Remote Stack Buffer Overflow - the malware listens on TCP port 1111. Third-party attackers who can reach an infected system can send a specially crafted packet prefixed with "DOS". This will trigger a classic stack buffer overflow overwriting ECX, EIP registers and structured exception handler (SEH).
References: [MVID-2022-0448]
LM Social Server (IANA official) |
SG
|
| 1111 |
tcp |
trojan |
Daodan, Ultors Trojan |
Trojans
|
| 1111 |
udp |
trojan |
Daodan |
Trojans
|
| 1111 |
tcp |
threat |
W32.Suclove |
Bekkoame
|
| 1111 |
tcp,udp |
threat |
AIMVision |
Bekkoame
|
| 1111 |
tcp,udp |
lmsocialserver |
LM Social Server |
IANA
|
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6 records found
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External Resources
SANS Internet Storm Center: port 1111
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.
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