Open the file in Wireshark.
All you can see is a bunch of SSH connections to and from localhost, nothing strange going on there. There are a total of 248 TCP connections, which would fit 8 bit per ASCII character.
In the "Conversations" tab in Wireshark you can see all TCP connections. Some connections have around ~16 packets from A->B and some have ~44.
![TCP](https://i.imgur.com/YLh2jMy.png)
So after exporting those as a CSV and treating the lower number as "0" and the higher one as "1" we get the following string:
```01000001010100110100100101010011011110110110110000110011011101000011010101011111011001110011001101110100010111110101001101100011011010000111011001110110001100010110011000110111011110010101111100110100011001110110000100110001010011100010000101111101
ASIS{l3t5_g3t_Schvv1f7y_4ga1N!}```
