I was using Process Hacker and noticed lots of connections in waiting
status to low number IP addresses, which seemed unusual because no network apps
that I was aware of were running. I started investigating who these IP
addresses are and found others have asked the same question without any good
answers. So I broke out my tools and figured out exactly what is happening.
Kaspersky makes frequent calls to these dnl sites to update AV, KSN etc. Someone questioned what was being sent
because it’s an SSL connection, so I broke the tunnel and captured exactly what
it was requesting. I didn’t monitor it for hours on end, but for the time I
have watched, it is only performing a GET for updates and diffs. See my screen
shot.
Seems like Kaspersky has a bunch of download servers. If you notice, the DNS name resolves twice to the same IP, I suspect it's a load balancing method or fail over method. The IP addresses do not reverse to the host name, I discovered these names when looking inside the encrypted tunnel.
host name :
dnl-00.geo.kaspersky.com
address : 4.28.136.36
host name :
dnl-01.geo.kaspersky.com
address : 4.28.136.36
host name :
dnl-02.geo.kaspersky.com
address : 4.28.136.39
host name :
dnl-03.geo.kaspersky.com
address : 4.28.136.39
host name :
dnl-04.geo.kaspersky.com
address : 4.28.136.42
host name :
dnl-05.geo.kaspersky.com
address : 4.28.136.42
host name :
dnl-06.geo.kaspersky.com
address : 38.124.168.116
host name :
dnl-07.geo.kaspersky.com
address : 38.124.168.119
host name :
dnl-08.geo.kaspersky.com
address : 38.124.168.125
host name :
dnl-09.geo.kaspersky.com
address : 38.117.98.196
host name :
dnl-00.geo.kaspersky.com
address : 4.28.136.36
host name :
dnl-10.geo.kaspersky.com
address : 38.117.98.199
host name :
dnl-11.geo.kaspersky.com
address : 38.117.98.202
host name :
dnl-12.geo.kaspersky.com
address : 38.117.98.253
host name :
dnl-13.geo.kaspersky.com
address : 38.124.168.119
host name :
dnl-14.geo.kaspersky.com
address : 4.28.136.39
host name :
dnl-15.geo.kaspersky.com
address : 38.124.168.116
host name :
dnl-16.geo.kaspersky.com
address : 38.117.98.196
host name :
dnl-17.geo.kaspersky.com
address : 38.117.98.202
host name :
dnl-18.geo.kaspersky.com
address : 38.117.98.199
host name :
dnl20.geo2.kaspersky.com
alias name:
dnl-19.geo.kaspersky.com
address : 4.28.136.42
Sincerly,
The Cheapbyte