Home Monero Sysrv Botnet Variant Targets Home windows, Linux, Infects Crypto Miners, says Microsoft

Sysrv Botnet Variant Targets Home windows, Linux, Infects Crypto Miners, says Microsoft

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Sysrv Botnet Variant Targets Home windows, Linux, Infects Crypto Miners, says Microsoft
brooke.crothers
Mon, 05/23/2022 – 17:47

Scans for SSH Keys

“Like older variants, Sysrv-Ok scans for SSH keys, IP addresses, and host names, after which makes an attempt to connect with different techniques within the community by way of SSH to deploy copies of itself. This might put the remainder of the community susceptible to changing into a part of the Sysrv-Ok botnet,” in accordance with Microsoft.

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“We extremely advocate organizations to safe internet-facing techniques, together with well timed utility of safety updates and constructing credential hygiene,” Microsoft added.

At its core a cryptocurrency miner

At its core, Sysrv is a worm and a cryptocurrency miner, Cujo AI, a cyberseucrity firm, stated in a September 2021 blog.

“The principle objective of the Sysrv botnet is to mine the Monero cryptocurrency,” Cujo Ai stated, reinforcing Juniper Networks’ description of the botnet.

“The worm module merely initiates port scans towards random IPs to search out susceptible Tomcat, WebLogic, and MySQL providers and tries to infiltrate the servers with a hardcoded password dictionary assault,” creator Dorka Palotay, stated within the weblog.

As Sysrv developed, it launched extra exploits to boost its worm capabilities.

“The malware propagation begins with a easy loader script file, which pulls down these modules upon profitable execution.”

Palotay says that the Sysrv botnet has stood out as a consequence of its use of Golang (Go) – “a comparatively new programming language {that a} rising variety of malware builders have picked up since early 2020.”

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Brooke Crothers

A brand new Sysrv variant, dubbed Sysrv-Ok, finds vulnerabilities starting from path traversal and distant file disclosure to arbitrary file obtain and distant code execution vulnerabilities, says Microsoft. Like prior variants, Sysrv-Ok scans for SSH keys, IP addresses, and host names.

The gamut of vulnerabilities embrace outdated vulnerabilities – addressed in safety updates – in WordPress plugins in addition to newer vulnerabilities together with CVE-2022-22947 (Nationwide Vulnerability Database).

As soon as working on a tool, Sysrv-Ok deploys a cryptocurrency miner, Microsoft stated.

Sysrv was first found in December 2020. In April of 2021, Juniper Networks cited Sysrv for exploiting vulnerabilities in net apps and databases to put in coin miners on each Home windows and Linux techniques.

“The…goal is to put in a Monero cryptominer,” Juniper Networks stated.

One of many new behaviors noticed within the Sysrv-Ok variant is the flexibility to scan for WordPress configuration information and backups to retrieve database credentials, which it then makes use of to achieve management of the online server, Microsoft said in a series of tweets.

Sysvr-Ok additionally has up to date communication capabilities, together with utilizing a Telegram bot, Microsoft stated.

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*** This is a Security Bloggers Network syndicated blog from Rss blog authored by brooke.crothers. Learn the unique submit at: https://www.venafi.com/blog/variant-sysrv-botnet-targets-windows-linux-infects-monero-miners-says-microsoft




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