KingMiner Malware  - KingMiner Malware - KingMiner Malware Targets Windows Servers To Mine Monero

KingMiner malware targets Windows server and utilizes entire CPU resources to mine Monero. The malware primarily targets Servers using IISSQL.

The malware was first identified in June 2018, security researchers form Checkpoint detected new version of KingMiner with significant that bypass several detection engines.

KingMiner malware gains access to the machines by using brute force method to download Windows Scriptlet file (.sct) on the victim’s machine.

KingMiner malware  - fig2 1 700x257 - KingMiner Malware Targets Windows Servers To Mine Monero

Then it will detect the CPU architecture of the infected machine and downloads the XML payload file based on the CPU architecture. The downloaded zip file includes five files.

- King - KingMiner Malware Targets Windows Servers To Mine Monero

config.json – XMRig CPU miner configuration file.
md5.txt – file containing only the string “zzz.”
powered.exe (called fix.exe in older versions) – The main executable file.
soundbox.dll/soundbox.dll – DLL files containing functions to be exported by powered.exe.
x.txt/y.png – Binary blob files. Note – This is not a real PNG file.

Researchers said the powered.exe is executed, then it creates XMRig miner and appends key on the registry, and executes functions from DLL files.

- fig6 1 700x501 - KingMiner Malware Targets Windows Servers To Mine Monero

The function King1 decodes the binary blob file x.txt & y.png, which is the modified version of the XMRig CPU miner.

The XMRig CPU Miner designed to consume only 75% of the CPU resource but it consumes of 100%. The malware is evolving constantly and it has placeholders for future operations or upcoming updates which will make this malware even harder to detect.

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