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September 22, 2023
Severity High Analysis Summary Ducktail Malware is a malicious program designed by hackers to infiltrate computers and networks globally. Ducktail malware is typically delivered through a […]September 22, 2023Severity Medium Analysis Summary First discovered in 2016, Revenge RAT is a remote access trojan (RAT) designed to give an attacker complete control over an infected […]September 22, 2023Severity High Analysis Summary The Konni APT (Advanced Persistent Threat) group is a cyber espionage group that has been active since at least 2014. It is […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
Connect with Us
Platform
Managed Security Services
Managed Penetration Testing
Rewterz penetration testing services help organizations determine if a cyber attacker can gain access to their critical assets while giving them detailed insights of the overall business impact of a cyber attack.
Resources
September 22, 2023Severity High Analysis Summary Ducktail Malware is a malicious program designed by hackers to infiltrate computers and networks globally. Ducktail malware is typically delivered through a […]September 22, 2023Severity Medium Analysis Summary First discovered in 2016, Revenge RAT is a remote access trojan (RAT) designed to give an attacker complete control over an infected […]September 22, 2023Severity High Analysis Summary The Konni APT (Advanced Persistent Threat) group is a cyber espionage group that has been active since at least 2014. It is […]Threat Insights
Before Rewterz got its start, the market was in dire need of a specialized and dedicated information security company. It was nearly impossible for businesses to find a trustworthy provider that could truly cover all of their bases. We wanted to meet this need, giving companies across the globe a chance to get ahead while knowing that their data is in good hands.
Connect with Us
Rewterz Threat Alert – ISO Files in Email Attachments Delivering Malware
December 26, 2019Rewterz Threat Alert – FIN7 BOOSTWRITE’s Lost Twin exposes sensitive information
December 27, 2019
Severity
High
Analysis Summary
A new version of the Ryuk Ransomware was released that will purposely avoid encrypting folders commonly seen in *NIX operating systems. Ryuk Ransomware using an executable named v2.exe, would no longer encrypt folders that are associated with *NIX operating systems.
A Linux/Unix variant of Ryuk does not exist, but Windows 10 does contain a feature called the Windows Subsystem for Linux (WSL) that allows you to install various Linux distributions directly in Windows. These installations utilize folders with the same blacklisted names as listed below:
- bin
- boot
- Boot
- dev
- etc
- lib
- initrd
- sbin
- sys
- vmlinuz
- run
- var
Impact
Blacklist NIX folders
Remediation
- Always be suspicious about email sent by unknown senders.
- Never click on the links/attachments sent by unknown senders.