One of our honeypots detected a URL spreading a botnet with a Monero miner bundled with a Perl-based backdoor component. The routine caught our attention as the techniques employed are reminiscent as those used in the Outlaw hacking group’s previous operation.
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We found cryptocurrency-mining activity that involves the exploitation of the Oracle WebLogic server vulnerability CVE-2019-2725 with the interesting behavior of using certificate files as an obfuscation tactic.
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We analyzed a malicious Monero miner using multiple methods for propagation and infection to systems and vulnerable databases. While initially found infecting systems in China beginning of the year, the malware is expanding to other countries with more infiltration techniques like EternalBlue and PowerShell abuse.
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We noticed a sudden increase in hack tool installation attempts from various industries in China, Taiwan, Italy and Hong Kong. We found a trojan combining RADMIN and MIMIKATZ to drop a Monero miner by exploiting MS17-010 for propagation, likely taking advantage of the Lunar New Year holidays.
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We spotted two variants of activities from hacking group Outlaw. The script used in the first version of its bot has two functionalities: the miner and Haiduc-based dropper. The second variant of the code, distributed by the bot, was mainly designed to brute force and further exploit the Microsoft Remote Desktop Protocol and cloud administration cPanel in order to escalate the privileges.
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