Even though any process is provided with variables from its environment, they are often overlooked by users, developers and sometimes even the OS itself.
TL;DR: We found 6(!) different common security issues that stem from incorrect implementation of code hooking and injection techniques. These issues were found in more than 15 different products. The most impactful discovery was that three different hooking engines also suffer from these kind problems, including the most popular commercial
TL;DR Microsoft’s Control Flow Guard (CFG) is a security feature that prevents the abuse of indirect calls from calling addresses that are not marked as safe. CFG can cause problems for anyone trying to execute malicious memory manipulations on Windows. In such cases, this can be bypassed by adding an exception to the CFG bitmap (a mapping of
Recently we came across a new malware strain, first discovered by @hFireF0X, and at point of discovery, it was not detected by any of the 56 anti-virus programs tested by VirusTotal service. (We wrote more about Furtim malware here.)
A research of this sample showed a malware strain that is not yet ready for production use and provided an interesting peek inside a malware’s development process.
TL;DR: Design issues in various security products, such as anti-virus, make it significantly easier for threat actors to bypass exploit mitigations. As part of our ongoing goal of complete endpoint security, we found a prevalent flaw where anti-virus products allocate memory with RWX permissions at a predictable address.
ModPOS is the latest in the string of POS malware that’s making the news. As its family name implies, this malware is intent on one: stealing credit card information.
A few days ago, we published a blog entry on an advanced malware called Moker, and discussed the different challenges that Moker placed to avoid detection and anti-dissection, as part of enSilo’s continuing improvement of our endpoint security software.
Now that we have the stripped down malware sample, it’s time to analyze the actual malware.
Recently, we came across Moker, an advanced malware residing in a sensitive network of a customer. Since the malware did not try to access an external server, but rather tamper with the system inner workings, we decided to give this malware a second look. (This kind of work is part of developing complete endpoint security software.)
Today, Microsoft released their latest Patch Tuesday. This Patch includes a fix for CVE-2015-2363, a complementary patch to CVE-2015-2360 from last month. The two CVEs together bundles within themselves IMPORTANT-rated exploitable vulnerabilities which we responsibly disclosed to Microsoft.