Angler Exploit Kit Evading EMET

We recently encountered some exploits from Angler Exploit Kit EK that are completely evading Microsoft’s Enhanced Mitigation Experience Toolkit EMET. This is something we are seeing for the first time in the wild, and we only observed it affecting systems running Windows 7. Angler EK uses complex...

Angler Exploit Kit Evading EMET

We recently encountered some exploits from Angler Exploit Kit EK that are completely evading Microsoft’s Enhanced Mitigation Experience Toolkit EMET. This is something we are seeing for the first time in the wild, and we only observed it affecting systems running Windows 7. Angler EK uses complex...

Microsoft Warns of Sneaky New Macro Trick

Microsoft is warning of an innovative new technique attackers are using to sneak macro malware past virus detection engines and add to the already huge uptick in reported macro attacks. According to researchers at Microsoft’s Malware Protection Center, they stumbled upon the macro technique in a...

How RTF malware evades static signature-based detection

History Rich Text Format RTF is a document format developed by Microsoft that has been widely used on various platforms for more than 29 years. The RTF format is very flexible and therefore complicated. This makes the development of a safe RTF parsers challenging. Some notorious vulnerabilities...

How RTF malware evades static signature-based detection

History Rich Text Format RTF is a document format developed by Microsoft that has been widely used on various platforms for more than 29 years. The RTF format is very flexible and therefore complicated. This makes the development of a safe RTF parsers challenging. Some notorious vulnerabilities...

Cerber Ransomware Partners with the Dridex Spam Distributor

Cerber ransomware incorporates the unusual feature of “speaking” its ransom message after successfully infecting a user machine and encrypting files. Cerber was first seen in the wild at the end of February 2016 and was observed being delivered mostly via exploit kits EK, notably using Magnitude...

Obfuscated String Solver: Floss

Rather than heavily protecting backdoors with hardcore packers, many malware authors evade heuristic detections by obfuscating only key portions of an executable. Often, these portions are strings and resources used to configure domains, files, and other artifacts of an infection. These key...

Latest TeslaCrypt Targets New File Extensions, Invests Heavily in Evasion

TeslaCrypt, like many of its ransomware cousins, doesn’t sleep on past success. Researchers at Endgame Inc., have found two updates for the cryptoransomware in the past two weeks that invest heavily in obfuscation and evasion techniques, and also target a host of new file extensions. These sample...

Libssh Type Obfuscation Vulnerability

libssh is a C development package for accessing SSH services, which can execute remote commands, file transfers, and also provide a secure transmission channel for remote programs. A type-obfuscation vulnerability exists in versions of libssh prior to 0.7.3, which stems from a type-obfuscation...

Gratipay: An adversary can harvest email address for spamming.

The website is displaying email address. These email address can be harvested by automated programs called bots and then used as a target for spamming. 1. Use any Email extractor tool or Add on. Here I have used Chrome Email Extractor Add on offered by Mr. Alien. 2. In Browser open...

Fedora 23 : glibc-2.22-6.fc23 (2015-7174c4d68d)

This update re-adds large file support to the openat function, removes support for the LDPOINTERGUARD environment variable which could be used to weaken security protections in ATSECURE/SUID binaries, and adds function pointer obfuscation to the TLS destructor list. Note that Tenable Network...

JavaScript Malicious Enumerator Obfuscation Technique

Known exploits could potentially bypass security products by using JavaScript obfuscation techniques. Obfuscated exploits might not be detected by IDS and IPS systems, thus allowing attackers to successfully attack the target web client...

JavaScript Malicious Escape Obfuscation Technique

Known exploits could potentially bypass security products by using JavaScript obfuscation techniques. Obfuscated exploits might not be detected by IDS and IPS systems, thus allowing attackers to successfully attack the target web client...

JavaScript Malicious Shifting Obfuscation Technique

Known exploits could potentially bypass security products by using JavaScript obfuscation techniques. Obfuscated exploits might not be detected by IDS and IPS systems, thus allowing attackers to successfully attack the target web client...

JavaScript Malicious Reverse Obfuscation Technique

Known exploits could potentially bypass security products by using JavaScript obfuscation techniques. Obfuscated exploits might not be detected by IDS and IPS systems, thus allowing attackers to successfully attack the target web client...

FLARE Script Series: Automating Obfuscated String Decoding

Introduction We are expanding our script series beyond IDA Pro. This post extends the FireEye Labs Advanced Reverse Engineering FLARE script series to an invaluable tool for the reverse engineer – the debugger. Just like IDA Pro, debuggers have scripting interfaces. For example, OllyDbg uses an...

SlemBunk: An Evolving Android Trojan Family Targeting Users of Worldwide Banking Apps

FireEye mobile researchers recently identified a series of Android trojan apps that are designed to imitate the legitimate apps of 33 financial management institutions and service providers across the globe. We dub the family “SlemBunk,” and have seen it covering three major continents: North...

Amazon Linux: Security Advisory (ALAS-2015-622)

The remote host is missing an update for the SPDX-FileCopyrightText: 2015 Greenbone AG Some text descriptions might be excerpted from a referenced sources, and are Copyright C by the respective right holders. SPDX-License-Identifier: GPL-2.0-only ifdescription...

Low: xfsprogs

Issue Overview: It was discovered that the xfsmetadump tool of the xfsprogs suite did not fully adhere to the standards of obfuscation described in its man page. In case a user with the necessary privileges used xfsmetadump and relied on the advertised obfuscation, the generated data could contai...

LATENTBOT: Trace Me If You Can

FireEye Labs recently uncovered LATENTBOT, a new, highly obfuscated BOT that has been in the wild since mid-2013. It has managed to leave hardly any traces on the Internet, is capable of watching its victims without ever being noticed, and can even corrupt a hard disk, thus making a PC useless...