Talos ThreatSource is a regular intelligence update from Cisco Talos, highlighting the biggest threats each week and other security news.
Foxit Releases Reader and PhantomPDF Security Updates Following Disclosure from ZDI
Synopsis: Buzzwords are the bane of the infosec community. Whether it’s “cyber” or “APT”, these terms are often used as nothing more than a way to generate clicks or by marketing teams to push more blinky lights to customers. “Fileless malware” is the latest example of this. Attacks leveraging malware that have been dubbed “fileless malware attacks” have been generating significant media coverage recently leading many to wonder what impact these attacks may have on their organizations or whether they are adequately protected against them. In many cases these attacks are not truly fileless and result in various artifacts being written to targeted systems. In this presentation we will provide a brief history of in-memory malware as well as walk through some specific examples of malware that makes use of this approach to infecting systems. We will also cover why most malware is not actually “fileless”, along with specific examples of threats that make use of interesting persistence mechanisms that do not resemble what many have grown accustomed to seeing from malware.
Synopsis: The threat environment is in constant flux as defenders adopt improved techniques and attackers adapt their tools, techniques and procedures to counteract these. Sophisticated attackers are already altering their behaviour in order to make their attacks less visible and more likely to blend into the ‘background noise’ of network traffic. From using a genuine government website for command and control traffic, to using software update systems to distribute malicious executables, to ensure that payloads are only delivered to the intended target, threat actors are trying as much as possible to fly under the radar.
Synopsis: What happens when the biggest players in a market just get up and quit? That's exactly what has happened to the exploit kit landscape over the last year. Now that Angler, Neutrino, and Nuclear are gone, we're left to pick up the pieces. What's been created is a vacuum with Rig, Sundown, and others jockeying for position, but none have taken the lead. We've observed adversaries changing kits frequently and gates switching from one kit to the next. Just like any other threat, adversaries are going to evolve and change. Oddly the kits don't appear to have evolved much, but looks can be deceiving. Previously unreleased details on several high profile exploit kits will be disclosed. This talk will discuss the state of exploit kits today. There will also be a section related to how exploit kits will evolve in the future and the impacts it may potentially have on the threat landscape overall.
Synopsis: This presentation will show how APT actors are evolving and how the reconnaissance phase is changing to protect their valuable 0-day exploit or malware frameworks. This talk will mainly focus on the usage of Office documents and watering hole attacks designed to establish if the target is the intended one (we will mention campaigns against political or military organizations). The techniques and the obfuscation put in place by these actors will be described in detail (techniques based on Macro, JavaScript, PowerShell, Flash or Python). At the end of the presentation, we will show different mitigations to help attendees protect their users.
Description: Foxit has released Reader and PhantomPDF security updates for two vulnerabilities that were disclosed by Trend Micro's Zero Day Initiative. The two vulnerabilities, identified as CVE-2017-10951 and CVE-2017-10952, manifest due to insufficient validation of user-supplied data, resulting in command injection and file write conditions respectively.
Description: Cisco Talos has disclosed an arbitrary code execution vulnerability that has been identified in National Instruments LabVIEW. This vulnerability, identified as CVE-2017-2779, manifests as an error in the RSRC segment parsing functionality of LabVIEW. A specially crafted VI file can cause an attacker controlled looping condition resulting in an arbitrary null write. While National Instruments has been notified of the vulnerability, they do not consider this issue a vulnerability. Thus, no patch for this vulnerability is available.
New WinDbg available in preview!
https://blogs.msdn.microsoft.com/windbg/2017/08/28/new-windbg-available-in-preview/
Disabling Intel ME 11 via undocumented mode
http://blog.ptsecurity.com/2017/08/disabling-intel-me.html
Hack In The Box GSEC 2017 - Talks and materials
http://gsec.hitb.org/materials/sg2017/
Deconstructing a winning WebKit Pwn2Own Entry
https://www.zerodayinitiative.com/blog/2017/8/24/deconstructing-a-winning-webkit-pwn2own-entry
Beware of Hurricane Harvey Relief Scams
https://krebsonsecurity.com/2017/08/beware-of-hurricane-harvey-relief-scams/