Janus Android App Signature Bypass Allows Attackers to Modify Legitimate Apps
Android’s regular security update for December 2017 included a fix for a serious vulnerability that could allow attackers to modify installed apps without affecting their signature. This would allow an attacker to gain access to the affected device (indirectly). First found by researchers in July, this vulnerability (designated as CVE-2017-13156, and also called the Janus vulnerability) affects versions of […] more…IT threat evolution Q1 2017. Statistics
Q1 figures According to KSN data, Kaspersky Lab solutions detected and repelled 479,528,279 malicious attacks from online resources located in 190 countries all over the world. 79,209,775 unique URLs were recognized as malicious by web antivirus components. Attempted infections by malware that aims to steal money via online access to bank accounts were registered on […] more…Spam and phishing in Q1 2017
Spam: quarterly highlights Spam from the Necurs botnet We wrote earlier about a sharp increase in the amount of spam with malicious attachments, mainly Trojan encryptors. Most of that spam was coming from the Necurs botnet, which is currently considered the world’s largest spam botnet. However, in late December 2016, the network’s activity almost ceased […] more…Analyzing CVE-2017-3731: Truncated Packets Can Cause Denial of Service in OpenSSL
OpenSSL is a popular open-source library for SSL and is used by various software and companies across the world. In January, OpenSSL released an update that fixed multiple vulnerabilities. One of them is CVE-2017-3731, which can cause a denial of service due to a crash. McAfee Labs analyzed this vulnerability to provide detection for customers. […] more…Kaspersky Security Bulletin. Predictions for 2017
Download the PDF Yet another year has flown past and, as far as notable infosec happenings are concerned, this is one for the history books. Drama, intrigue and exploits have plagued 2016 and, as we take stock of some of the more noteworthy stories, we once again cast our gaze forward to glean the shapes […] more…Exploits and vulnerabilities in Q2 2026
The vulnerability landscape shifted significantly in Q2 2026. First, the number of registered CVEs reached an unprecedented level. This is driven primarily by the widespread adoption of AI, both for application development and search for security flaws. This resulted in entire new classes of vulnerabilities emerging, particularly in the Linux networking subsystem. Second, security researchers […] more…VTPRACTITIONERS{ACRONIS}: Tracking FileFix, Shadow Vector, and SideWinder
Introduction We have recently started a new blog series called #VTPRACTITIONERS. This series aims to share with the community what other practitioners are able to research using VirusTotal from a technical point of view. Our first blog saw our colleagues at SEQRITE tracking UNG0002, Silent Lynx, and DragonClone. In this new post, Acronis Threat Research […] more…Inside of the WASP’s nest: deep dive into PyPI-hosted malware
Photo by Matheus Queiroz on Unsplash In late 2022 we decided to start monitoring PyPI, arguably the most important Python repository, as there were a number of reports on it hosting malware. PyPI took exceptional relevance amongst all repositories as, historically, it was trusted by default by many software developers. Any security breach or abuse […] more…APT43: An investigation into the North Korean group’s cybercrime operations
Introduction As recently reported by our Mandiant’s colleagues, APT43 is a threat actor believed to be associated with North Korea. APT43’s main targets include governmental institutions, research groups, think tanks, business services, and the manufacturing sector, with most victims located in the United States and South Korea. The group uses a variety of techniques and […] more…Can Thieves Steal Identities With Only a Name and Address?
Can thieves steal identities with only a name and address? In short, the answer is “no.” Which is a good thing, as your name and address are in fact part of the public record. Anyone can get a hold of them. However, because they are public information, they are still tools that identity thieves can use. If you think of […] more…What Are Ransomware Attacks? An In-Depth Guide
We all love to spend time surfing the web — whether we’re shopping, paying bills, or reacting to funny memes. The internet has also allowed many of us to keep working from home even during the pandemic. The internet is great, but the best way to keep enjoying it is to know where and how […] more…ScarCruft surveilling North Korean defectors and human rights activists
The ScarCruft group (also known as APT37 or Temp.Reaper) is a nation-state sponsored APT actor we first reported in 2016. ScarCruft is known to target North Korean defectors, journalists who cover North Korea-related news and government organizations related to the Korean Peninsula, between others. Recently, we were approached by a news organization with a request […] more…Trickbot module descriptions
Trickbot (aka TrickLoader or Trickster), is a successor of the Dyre banking Trojan that was active from 2014 to 2016 and performed man-in-the-browser attacks in order to steal banking credentials. Trickbot was first discovered in October 2016. Just like Dyre, its main functionality was initially the theft of online banking data. However, over time, its […] more…Gaming-related cyberthreats in 2020 and 2021
The video game industry is soaring, not in the least thanks to the lockdowns, which forced people to look for new ways to entertain themselves and socialize. Even with things going back to normal, gaming is expected to have a very bright future. Newzoo estimates the industry to gross 175.8 billion USD in 2021, which […] more…How to confuse antimalware neural networks. Adversarial attacks and protection
Introduction Nowadays, cybersecurity companies implement a variety of methods to discover new, previously unknown malware files. Machine learning (ML) is a powerful and widely used approach for this task. At Kaspersky we have a number of complex ML models based on different file features, including models for static and dynamic detection, for processing sandbox logs […] more…Operation TunnelSnake
Windows rootkits, especially those operating in kernel space, are pieces of malware infamous for their near absolute power in the operating system. Usually deployed as drivers, such implants have high privileges in the system, allowing them to intercept and potentially tamper with core I/O operations conducted by the underlying OS, like reading or writing to […] more…More information
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