Google Chrome Type Obfuscation Vulnerability (CNVD-2017-31823)

Google Chrome is an open source web browser. A type obfuscation vulnerability exists in Google Chrome V8, which allows remote attackers to exploit the vulnerability to submit a special request and execute arbitrary code...

AVPASS - Tool For Leaking And Bypassing Android Malware Detection System

AVPASS is a tool for leaking the detection model of Android malware detection systems i.e., antivirus software, and bypassing their detection logics by using the leaked information coupled with APK obfuscation techniques. AVPASS is not limited to detection features used by detection systems, and...

Adobe Flash Player Type Obfuscation Remote Code Execution Vulnerability

Adobe Flash Player is a cross-platform, browser-based multimedia player product from Adobe. The product supports cross-screen and browser viewing of applications, content and videos. A type-obfuscated remote code execution vulnerability exists in Adobe Flash Player 26.0.0.137 and prior versions...

PowerShell Obfuscation Detection Framework: Revoke-Obfuscation

Revoke-Obfuscation is an open-source PowerShell v3.0+ framework for detecting obfuscated PowerShell commands and scripts at scale. It relies on PowerShell’s AST Abstract Syntax Tree to rapidly extract thousands of features from any input PowerShell script and compare this feature vector against o...

Mobile Menace Monday: Malicious clicker with extra maliciousness included

A new malicious clicker has emerged onto third-party app stores. Chinese in origin, the malicious app uses heavy obfuscation and poses as a battery optimizer app. We classify is as Android/Trojan.Clicker.hyj. Click to view slideshow. Hide what’s inside To obfuscate its code, Clicker.hyj uses an A...

Revoke-Obfuscation: PowerShell Obfuscation Detection Using Science

Many attackers continue to leverage PowerShell as a part of their malware ecosystem, mostly delivered and executed by malicious binaries and documents. Of malware that uses PowerShell, the most prevalent use is the garden-variety stager: an executable or document macro that launches PowerShell to...

Revoke-Obfuscation: PowerShell Obfuscation Detection Using Science

Many attackers continue to leverage PowerShell as a part of their malware ecosystem, mostly delivered and executed by malicious binaries and documents. Of malware that uses PowerShell, the most prevalent use is the garden-variety stager: an executable or document macro that launches PowerShell to...

Threat Round-up for July 14 - July 21

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between July 14 and July 21. As with previous round-ups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavior characteristics,...

Threat Round-up for June 30 - July 07

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between June 30 and July 07. As with previous round-ups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavior characteristics,...

Obfuscation in the Wild: Targeted Attackers Lead the Way in Evasion Techniques

Throughout 2017 we have observed a marked increase in the use of command line evasion and obfuscation by a range of targeted attackers. Cyber espionage groups and financial threat actors continue to adopt the latest cutting-edge application whitelisting bypass techniques and introduce innovative...

Obfuscation in the Wild: Targeted Attackers Lead the Way in Evasion Techniques

Throughout 2017 we have observed a marked increase in the use of command line evasion and obfuscation by a range of targeted attackers. Cyber espionage groups and financial threat actors continue to adopt the latest cutting-edge application whitelisting bypass techniques and introduce innovative...

morphHTA - Morphing Cobalt Strike PowerShell Evil HTA Generator

morphHTA is a Morphing Cobalt Strike PowerShell Evil HTA Generator Usage : usage: morph-hta.py -h --in --out --maxstrlen --maxvarlen --maxnumsplit optional arguments: -h, --help show this help message and exit --in File to input Cobalt Strike PowerShell HTA --out File to output the morphed HTA to...

Remote Symbol Resolution

Introduction The following blog discusses a couple of common techniques that malware uses to obscure its access to the Windows API. In both forms examined, analysts must calculate the API start address and resolve the symbol from the runtime process in order to determine functionality. After...

Remote Symbol Resolution

Introduction The following blog discusses a couple of common techniques that malware uses to obscure its access to the Windows API. In both forms examined, analysts must calculate the API start address and resolve the symbol from the runtime process in order to determine functionality. After...

Remote Symbol Resolution

Introduction The following blog discusses a couple of common techniques that malware uses to obscure its access to the Windows API. In both forms examined, analysts must calculate the API start address and resolve the symbol from the runtime process in order to determine functionality. After...

TerraMaster NAS TOS <= 3.0.30 Unauthenticated RCE as Root

Recently I bought a TerraMaster F2-420 NAS from Amazon in order to store my private code, backups and this kind of stuff. As soon as it arrived I started to play with its web interface and eventually I wanted to see how it was implemented, moreover I was curious to see if I could find any remotel...

Google Chrome Blink Type Obfuscation Vulnerability

Google Chrome is a web browser developed by Google Inc. in the United States. A type obfuscation vulnerability exists in Google Chrome Blink, which allows remote attackers to exploit the vulnerability by submitting a special WEB page and tricking the user into parsing it, which can crash the...

Brave Status Bar Obfuscation Vulnerability

Brave is a Web browser product from Brave Software, Inc. in the United States. A status bar obfuscation vulnerability exists in Brave version 0.12.4, which may unintentionally redirect to a malicious website. An attacker can exploit this vulnerability to redirect users to malicious websites,...

Brave URI Obfuscation Vulnerability

Brave is a Web browser product from Brave Software, Inc. in the United States. A URI obfuscation vulnerability exists in Brave version 0.12.4, which can be exploited by attackers to redirect users to malicious websites, resulting in the disclosure of personal information or property damage...

Google Chrome PDFium Type Obfuscation Vulnerability

Google Chrome is a web browser developed by Google Inc. in the United States. A type-obfuscation vulnerability exists in Google Chrome PDFium, which allows remote attackers to exploit the vulnerability by submitting a special WEB page and tricking the user into parsing it, which could crash the...