Hackers Abused Oracle WebLogic Server for Mining Cryptocurrencies

There is a rapid growth in cryptocurrency attacks from the mid of 2017, mining cryptocurrency requires more computing power, which requires significant amounts of energy. Attackers abuses Oracle WebLogic Server vulnerability to deliver Monero Miner Payloads.

As long as your server has RCE vulnerability attackers take an advantage of it and include malicious scripts. The cryptocurrency attacks not only compromise the system, it consumes all the system resources.

Attackers use already patched vulnerability CVE-2017-10271 that allows remote code execution to deliver cryptocurrency miners payload. Security researchers from TrendMicro spotted the abuse of vulnerability by the cybercriminal to mine Monero.

Once the Coinminer_MALXMR[.]JL-PS is executed it downloads three files, one autostart component and two autostart components one for Windows 64-bit & and another for 32-bit.Trend Micro detected it as Coinminer_TOOLXMR[.]JL-WIN64 and Coinminer_MALXMR[.]JLT-WIN32.

Based on the Windows operating system architecture it decides which miner to run, either 64-bit variant or 32-bit variant of an XMRig Monero miner.

Last week attackers targetted Apache CouchDB patched vulnerabilities CVE-2017-12635 (Apache CouchDB JSON Remote Privilege Escalation Vulnerability) and CVE-2017-12636 (Apache CouchDB _config Command Execution) to mine Cryptocurrency.

It is not the first Oracle Weblogic were Exploited, last month attackers used the same vulnerability to install and run crypto miners. Following are the version affected with the vulnerability 10.3.6.0.0, 12.1.3.0.0, 12.2.1.1.0 and 12.2.1.2.0.

Hackers taking each and every opportunity for mining cryptocurrencies, even they inserted Cryptocurrency Mining Script with the embedded videos in word documents.

And if the user plays the video the Embedded script will be executed and suddenly system CPU Process getting higher and can reach up to 99%.

It is recommended to update your application regularly to mitigate the threats that exploit system vulnerabilities.