Mining program process name
a new customer recently consulted with sine security company, saying that his server often fails to open the website of the card, and the remote connection to the server is extremely slow. Sometimes the Ping value reaches 300-500, and he often switches. After listening to the customer's words,
will generally judge that he has been attacked by CC + DDoS mixed traffic, It's strange to say that there is no traffic attack on the computer room. It's not a traffic attack, but it also causes the server card and website to fail to open. What kind of attack is this? In order to solve the problem of
client server card, we immediately arranged a security engineer to carry out security detection and deployment on his Linux server
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mining Trojan horse is also designed. If the mining process is forced to stop by customers, it will automatically start to continue mining to achieve uninterrupted mining.
careful inspection shows that it is through setting the hourly task plan, remotely downloading shell mining Trojan horse, and then executing, Check whether the current process exists or not. If not, start the Trojan horse to mine
a detailed security inspection was carried out on the client's Linux server. It was found that fortunately, there was no encrypted server data, and the worm was infected with the disease through the security detection and analysis of our security engineers, we found that the server uses Apache Tomcat environment, the open architecture of the platform is JSP + Oracle database, and Apache Tomcat uses the version of 2016, which leads to the serious remote command execution vulnerability of Apache, Through this vulnerability, the intruder can directly invade the server and get the administrator permission of the server,
virus. If the data was encrypted, the loss would be great. The client was a platform, and the client's data was very important. After finding out the mining Trojan horse,
do customers need to know how the server is attacked? Was the Trojan horse uploaded? It can prevent the attack
in the later stage
sine security engineer immediately repairs the Apache vulnerability and clears the Trojan horse. So far, the problem has been solved, the client server
runs stably, and the network station opens normally
if the process
magic rabbit is more practical
you can see all the processes in the process option of magic rabbit
the system process is green and marked as system process, other processes are black, and the location of the file of that process in your computer is displayed, And right click the process, there will be online check the process information, a little open, there is a very clear label, such as: whether it is a Trojan horse, whether it is an error, whether it is a background process, whether it occupies memory, whether it is a spy, and a series of instructions.
log in to the server and use top to check CPU usage. This program called minerd consumes a large amount of CPU, as shown in the figure below:
this program is not our normal service program. I think it must be hacked, Then I searched this program. It's really a mining Trojan horse program. Now that I know it's a Trojan horse program, let's see how it works, and then how to repair the back door
this program is placed under / opt / minerd. When it is determined that it is not related to the project, it is judged to be a Trojan horse program, decisively kills the process, and then deletes the minerd file under / opt
Exhibition