The Trickster Hackers – Backdoor Obfuscation and Evasion Techniques

A backdoor is a method for bypassing the normal authentication or encryption of a system. Sometimes developers construct backdoors to their own programs for various reasons. For example, to provide easy maintenance, developers introduce a backdoor that enables them to restore the manufacturer’s...

Exploit for Out-of-bounds Write in Microsoft

Dissecting modern browser exploit: case study of CVE-2018-8174...

Python-Based Adware Evolves to Install Malicious Browser Extensions

Security researchers have been warning of a few newly detected variants of python-based adware that are being distributed in the wild not only to inject ads but also found installing malicious browser extensions and hidden cryptocurrency miner into victims' computers. Dubbed PBot, or PythonBot, t...

Pbot: evolving adware

The adware PBot PythonBot got its name because its core modules are written in Python. It was more than a year ago that we detected the first member of this family. Since then, we have encountered several modifications of the program, one of which went beyond adware by installing and running a...

Security Bulletin: Properties with special characters in IBM UrbanCode Deploy might not be obfuscated correctly (CVE-2016-0364)

Summary Secure properties in IBM UrbanCode Deploy that contain certain special characters are not obfuscated correctly in the step output logs of steps that use the properties. Vulnerability Details CVEID: CVE-2016-0364 DESCRIPTION: IBM UrbanCode Deploy could allow an authenticated user with...

CVE-2017-5420

A "javascript:" url loaded by a malicious page can obfuscate its location by blanking the URL displayed in the addressbar, allowing for an attacker to spoof an existing page without the malicious page's address being displayed correctly. This vulnerability affects Firefox 52...

Code injection

A "javascript:" url loaded by a malicious page can obfuscate its location by blanking the URL displayed in the addressbar, allowing for an attacker to spoof an existing page without the malicious page's address being displayed correctly. This vulnerability affects Firefox 52...

CVE-2017-5420

A "javascript:" url loaded by a malicious page can obfuscate its location by blanking the URL displayed in the addressbar, allowing for an attacker to spoof an existing page without the malicious page's address being displayed correctly. This vulnerability affects Firefox 52...

Malware analysis: decoding Emotet, part 1

Emotet Banking Trojan malware has been around for quite some time now. As such, infosec researchers have made several attempts to develop tools to de-obfuscate and even decrypt the AES-encrypted code belonging to this malware. The problem with these tools is that they target active versions of th...

Vega Stealer Malware Takes Aim at Chrome, Firefox

A malware dubbed Vega Stealer has been uncovered, looking to make off with saved credentials and credit-card information in the Chrome and Firefox browsers. While it’s a simple payload for now, researchers said it has the ability to evolve into something more concerning in the future. Proofpoint,...

PyJWT Key Obfuscation Attack Vulnerability

pyjwt is a JSON Web Token implementation in Python. PyJWT suffers from a key obfuscation vulnerability. An attacker can exploit the vulnerability to use PKCS1 PEM encoded public key users can perform symmetric/asymmetric key obfuscation attacks to create JWT from scratch...

Variant of SynAck Malware Adopts Doppelgänging Technique

Researchers have identified a new variant of the SynAck ransomware that is now using the newly identified Process Doppelgänging to slip past antivirus programs. Researchers said this is the first ransomware seen in the wild to employ the approach. Both SynAck ransomware and Process Doppelgänging...

SynAck targeted ransomware uses the Doppelgänging technique

The Process Doppelgänging technique was first presented in December 2017 at the BlackHat conference. Since the presentation several threat actors have started using this sophisticated technique in an attempt to bypass modern security solutions. In April 2018, we spotted the first ransomware...

SpookFlare v2.0 - Loader, Dropper Generator With Multiple Features For Bypassing Client-Side And Network-Side Countermeasures

SpookFlare has a different perspective to bypass security measures and it gives you the opportunity to bypass the endpoint countermeasures at the client-side detection and network-side detection. SpookFlare is a loader/dropper generator for Meterpreter, Empire, Koadic etc. SpookFlare has...

Meterpreter Loader Generator: SpookFlare

SpookFlare has a different perspective to bypass security measures and it gives you the opportunity to bypass the endpoint countermeasures at the client-side detection and network-side detection. SpookFlare is a loader/dropper generator for Meterpreter, Empire, Koadic etc. SpookFlare has...

The Catch 22 of Base64: Attacker Dilemma from a Defender Point of View

Web application threats come in different shapes and sizes. These threats mostly stem from web application vulnerabilities, published daily by the vendors themselves or by third-party researchers, followed by vigilant attackers exploiting them. To cover their tracks and increase their attack...

Mining of the virus through the Flash vulnerability propagation, a careful computer becomes mine machine-vulnerability warning-the black bar safety net

4 on 24 May, tinder the security team Alarm, the virus groups the use of Adobe Flash vulnerability propagation mining viruses. Virus gang the mining program implanted to the game download Station“52pk”, www.52pk.com when the user visits the website, the poison page to show after, without any...

Google Chrome V8 Type Obfuscation Vulnerability (CNVD-2018-09122)

Google Chrome is the United States Google Google company developed a Web browser. v8 is one of the open source JavaScript engine. A type obfuscation vulnerability exists in V8 in versions prior to Google Chrome 65.0.3325.146. A remote attacker could exploit this vulnerability by tricking a user...

Universal Plug and Play (UPnP): What you need to know

Universal Plug and Play UPnP is a widely used protocol with a decade-long history of flawed implementations across a wide range of consumer devices. In this paper, we will cover how these aws are still present on devices, how these vulnerabilities are actively being abused, and how a...

Fake Software Update Abuses NetSupport Remote Access Tool

Over the last few months, FireEye has tracked an in-the-wild campaign that leverages compromised sites to spread fake updates. In some cases, the payload was the NetSupport Manager remote access tool RAT. NetSupport Manager is a commercially available RAT that can be used legitimately by system...