Various unknown process running on the server

Issue

• As per the output of top command, there are some unknown processes running on the server

  2205 root      20   0 72484  452  200 S  0.3  0.0   8:07.01 ywjecspjfk
  

• The PID of the process does not match with what is displayed under top.

  $ ps -ef | grep  2205
  root      2205     1  8 05:47 ?        00:08:07 sh
  root      9788  9786  0 06:07 pts/0    00:00:10 strace -p 2205 -p 9784
  user  15948 25229  0 07:27 pts/3    00:00:00 grep 2205