Ryuk ransomware, a malware program believed to have been utilized in a hijack for a bitcoin-mining botnet that attacked enterprises worldwide is a complex twist on a corrupt and classic malware. Ryuk Ransomware: A Targeted Campaign Break-Down August 20, 2018 Research by: Itay Cohen, Ben Herzog Over the past two weeks, Ryuk, a targeted and well-planned Ransomware, has attacked various organizations worldwide. Opening the attachment allows for the malicious code to run the command line and from there, PowerShell. Ryuk uses a combination of VirtualAlloc, WriteProcessMemory and CreateRemoteThread to inject itself into the remote process. Ryuk continues to be an active ransomware threat and poses a significant risk to enterprise-level organizations. There was a time when Ryuk ransomware arrived on clean systems to wreak havoc. This ransomware checks the following items before it executes in your machine. If so, this argument is the directory of the dropper, which it deletes. Of the organizations that have been hit so far, it seems as though the attackers are targeting organizations where they can cause the biggest disruption, such as … The average payment demand following a ransomware attack has almost doubled in the second quarter of the year and victims have Ryuk and Sodinokiby to blame. Unlike most other viruses, this malware does not rename or append any extension to encrypted files. According to analysts and researchers, Ryuk worked as a secondary payload through botnets, namely the Emotet and TrickBot. Ryuk is another active human-operated ransomware campaign that wreaks havoc on organizations, from corporate entities to local governments to non-profits by disrupting businesses and demanding massive ransom. How does Ryuk ransomware infect my network? What is Ryuk Ransomware and How is it Different? If any of the checks fail, the ransomware exits without infecting on your machine. As such, Ryuk variants arrive on systems pre-infected with other malware—a “triple threat” attack methodology. If any of the checks fail, the ransomware exits without infecting on your machine. There was a time when Ryuk ransomware arrived on clean systems to wreak havoc. Install and scan for recently deleted files. Ryuk ransomware was first detected in August 2018 and is spread via highly targeted attacks, although the infection method is currently unknown. Ryuk is a ransomware family derived from Hermes that runs on Microsoft Windows Operating Systems. Ryuk enters the network in common ransomware fashion by using phishing emails with malicious macro-enabled attachments. Three organizations were hit with Ryuk infections over the first two months of its operations, alighting the attackers about $600,000 plus in ransom for their efforts. Download Data Recovery Pro (commercial). It has made over$640,000+ worth of Bitcoin. Unlike other families of ransomware, Ryuk does not contain process/service termination and anti-recovery functionality embedded in the executable. The Ryuk ransomware does not begin operations immediately but sleeps for a while.