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A weird thing occurred to my installation a month ago. I was on previous ubuntu version (17). According to a wireshark scan, there was a strange UDP continous
by dehef 8y ago
A weird thing occurred to my installation a month ago.
I was on previous ubuntu version (17).
According to a wireshark scan, there was a strange UDP continous stream, even with all applications closed. My computer was reaching several IP in Europe. The text of the stream was encrypted, I was just seeing "...token..." or thing like that.
I formatted and installed Ubuntu 18, the network is clean now.
I'm pretty sure I add some kind of malware, I have no idea what it was, it's very suspicious.
- lathiat 8y agoIt would have been pretty easy to track down what was doing that at the time, using netstat and similar.
- isostatic 8y agosudo netstat -planut would have shown what process was sending udp (and any other connections) If I run up an iperf stream from one AWS server to another and run that command, one line that's out is this: udp 0 0 172.26.4.22:44142 52.56.147.150:5001 ESTABLISHED 20114/iperf
- viraptor 8y agoIf the process actually tries to be stealthy you won't see open UDP sockets like this. If the data is only sent out, or the all is using polling, the socket can be created and destroyed as needed. A better approach could be systemtap which has a whole system visibility.
- isostatic 8y agoPresumably it would show up in a netstat, but only while the packet was being written to the network stack? open(SOCK) // now visible write(SOCK, contents) close(SOCK) // no longer visible