malware analysis Archives - Page 8 of 9

Poweliks Malware – Filelessly Persistent

Malware Family: Poweliks Hash Value SHA256: 4727b7ea70d0fc00f96a28de7fa3d97fa 9d0b253bd63ae54fbbf0bd0c8b766bb View the Full Poweliks Malware Analysis Report One of the key features released in VMRay Analyzer v2.1 is the enhanced analysis of fileless malware (also referred to as “non-malware”). Fileless malware is defined by malware analysis expert Lenny Zeltser as “..malware that

Malware Analysis, Product Features

Password Protected Word Document Connects to TOR Hidden Service

Hash Value SHA256: 3a813df1c8f1e835cc98dd60b799c64e61 db51a259ee30b7235004ccb3c9df64 View the Full Password Protected Word Document Analysis Report Password protected documents are an effective method for malware to bypass anti-virus (AV) and other detection solutions. Typically the AV will not be able to parse the password required from the text of the email used

Malware Analysis

VMRay Analyzer Identifies Resume Containing Evasive Malware

Recently, we received a seemingly innocuous job application with an attached Word document called “resume.doc”. Let’s take a closer look at the malicious behavior embedded in this fake resume. Upon uploading the Word doc into VMRay Analyzer, the signature was sent to our built-in reputation service, where the file hash

Cyber Security, Product Features

‘Close’ Doesn’t Count in Cyber Security

Even though enterprises spend millions every year on information security they still remain vulnerable to persistent cybercriminals in a world where cybercrime like ransomware is pervasive. Organizations cannot afford to do the “bare minimum” when it comes to threat analysis. As the saying goes, ” ‘close’ only counts in horseshoes

Malware Analysis

Jaff Ransomware Hiding in a PDF document

The challenge for a malware author today has more to do with creativity than a deep technical understanding. There are plenty of good trojan building tools out there to make the job easier. But once the author has a finished creation, the big challenge is how to get the finished

Malware Analysis

Wanna Decryptor Worm Spreads Over MS17-010 Vulnerability

About one month ago, the Shadow Brokers hacker group published a set of NSA hacking tools, that included zero-day exploits. One of these exploits is known as the ETERNALBLUE Server Message Block Protocol (SMB) vulnerability (MS17-010). It was only a matter of time before the inevitable happened. A malware author

Malware Analysis

Anti-Sandboxing Techniques in Cerber Ransomware Can’t Detect VMRay Analyzer

A new variant of Cerber ransomware is in the wild and has built-in anti-sandbox tools to detect hooking-based sandbox environments, as explained in this article by Cyphort. The limitations of a hooking-based approach, where a driver is injected into the target environment and ‘hooks’ API calls, allow the malware to

Malware Analysis

Undetected JScript Dropper Installs Sage Ransomware

A popular method to distribute malware (especially ransomware) is to send a JScript file (*.js) by E-Mail or prompt a user surfing the web to execute a file. The goal of this type of attack is to bypass filtering systems that warn users trying to open attachments with certain file

Malware Analysis

Spora Ransomware Dropper Uses HTA to Infect System

This past week, a new Ransomware variant called Spora was spotted in the wild. Currently, Spora only targets Russian-speaking users. What’s interesting about this Ransomware is that its payment site is so well designed, one could think they are running a legitimate business. The dropper for Spora is basically an

Malware Analysis

AtomBombing Evasion and Detection

A new code injection technique is effective in bypassing most analysis and detection methods. Code injection has been a favorite technique of malware authors for many years. Injecting malicious code into an otherwise-benign process is an effective way of masking malware from anti-virus and sandbox detection. It is used to

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