Port 60677 — Unassigned, Temporary, and Claimed

What Port 60677 Is

Port 60677 has no official assignment. It sits in the dynamic/ephemeral port range (49152-65535), which is reserved for temporary or private use by applications. ¹ The Internet Assigned Numbers Authority doesn't allocate ports in this range—they're first-come, first-served territory for any application that needs a port right now.

The Range Matters

The port numbering system divides the Internet's addressing space into three regions:

• Well-known ports (0-1023): Permanently assigned services (HTTP, SMTP, SSH)
• Registered ports (1024-49151): Semi-permanent assignments for specific applications
• Dynamic/ephemeral ports (49152-65535): Unassigned. Any application can use any port here.

Dynamic ports exist because not every application needs a permanent, well-known address. A temporary connection, a development environment, a test service—these don't need IANA's blessing. They just need to not collide with something else on the same machine. Port 60677 is in this wild frontier.

What's Actually Listening There

Two very different things have claimed port 60677:

AWS DynamoDB Local ²

The legitimate use: DynamoDB is Amazon's NoSQL database service. DynamoDB Local is a development tool that lets developers run a local version on their own machine during testing, before deploying to AWS. It listens on this port by default. If you're a developer and you see port 60677 open, this is probably what's there. You put it there. It's supposed to be there.

Trojan.DownLoader34.3753 ³

The malicious use: This trojan has been documented in the wild using port 60677. It injects code into system processes (svchost.exe, iexplore.exe), modifies the filesystem, and creates onion services—the hallmark of something trying to hide its traffic and communicate through Tor. Unlike DynamoDB Local, you didn't choose to install this.

How to Know What's Listening

If port 60677 is open on your system, you need to know which one it is. Use these tools:

On Linux/macOS:

# See what's listening on the port
lsof -i :60677

# Or using netstat
netstat -tlnp | grep 60677

# Or the modern alternative
ss -tlnp | grep 60677

On Windows (PowerShell as Administrator):

# Show listening ports and their processes
Get-NetTCPConnection -LocalPort 60677 | Select-Object State, OwningProcess

Look at what process is listening. If it's java or something AWS-related, you're fine. If it's something you don't recognize or something system-level when you didn't start it, that's a problem.

Why Unassigned Ports Matter

The dynamic port range exists because the Internet can't predict every application that will ever need to communicate. Some are temporary. Some are local. Some are experimental. Rather than asking IANA for permission every time, applications claim a port in the ephemeral range and move on.

This design choice is pragmatic and clever. It's also the reason you can find both development tools and trojans on the same port number. When there's no gatekeeper, the territory is genuinely shared between intention and malice. Both show up.

Port 60677 doesn't have an official story because it doesn't need one. Its story is whatever's actually running on it right now. Check.