Lastline Labs

Hunting for Ransomware with LLKB

Posted by Gregoire Jacob on 8/11/16 8:00 AM

Leveraging the new clustering feature of the Lastline Knowledge Base to study recent ransomware threats

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Topics: Ransomware, lastline knowledge base, clustering

Lastline: It’s as easy as A-P-I

Posted by Dr. Giovanni Vigna on 4/18/16 9:19 AM

Lastline’s solutions analyze network traffic, programs, documents, and other artifacts to identify and block advanced malware in enterprise networks.

In order to be able to easily integrate its functionality in the security workflow of the enterprise, Lastline products provide access to their functionality through APIs.

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Topics: Lastline Enterprise, Integration, Lastline Labs, APIs

ModPOS: A Framework Lurking in Point-of-Sale System Kernels

Posted by Subrat Sarkar on 4/7/16 5:00 AM

Authored by: Subrat Sarkar, Arunpreet Singh, and Clemens Kolbitsch

Diving deeply into the ModPOS malware framework using sandbox process snapshotting

Point-of-sale (POS) systems are amongst the most valuable targets for attackers today: with direct access to systems processing payment information, miscreants are able to circumvent any encryption between point-of-sale devices and the payment processor, allowing them to spy on - or even tamper with - sensitive payment information.

With ModPOS malware authors have developed a system that not only compromises payment processes at the origin device, but, at the same time, it does so from the kernel of these systems, well outside the reach of most security solutions.

As we will describe in this post, the ModPOS malware is much more than a system for compromising POS systems: it is a versatile framework that allows an  attacker to leverage a practically unlimited range of tools to interfere with a compromised system. Even more, this malware works on any 32-bit Microsoft Windows system (many POS systems on the market today are still running on Microsoft Windows XP) allowing to use this malware on more than just POS systems.

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Three interesting changes in malware activity over the past year

Posted by Dr. Christopher Kruegel on 3/31/16 5:00 AM

Every day, our Lastline sensors observe millions of files that our customers download from the Internet or receive as email attachments. These files are analyzed and, in many cases, executed or opened inside our sandbox. The sandbox is a secure, instrumented analysis environment where we can safely look for interesting behaviors that indicate bad intentions and outright malice. 

Every once in a while, we take a step back and look at the malicious behaviors that we have seen. Malware authors always look for new ways to make money, get access to sensitive data, and evade detection. They introduce new behaviors, refine ideas that they have tried in the past, and add tricks to bypass security controls. By looking over the data collected over the last year, we discovered a few interesting trends that show some of the directions that malware authors take. In this research note, we discuss three findings that struck us as interesting and worth reporting. As a forth bonus item, we also revisit evasive behaviors, something that we have been tracking for many years.

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Topics: Evasive Malware, Bank Malware, Lastline Labs, Banking Trojan, Browser Modification, Code Signing

A Peek Behind the Cryptowall

Posted by Arunpreet Singh on 1/28/16 8:00 AM

Bridging static and dynamic analysis using Lastline process snapshotting

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Topics: Sandboxing, FUSE, APT, Just-In-Time Decryption, Cryptowall, Ransomware

Defeating Darkhotel Just-In-Time Decryption

Posted by Arunpreet Singh on 11/5/15 10:00 AM

Authored by: Arunpreet Singh and Clemens Kolbitsch

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Topics: Evasive Malware, Full-system Emulation, APT, Just-In-Time Decryption, Darkhotel

PathArmor: Practical ROP Protection Using Context-sensitive CFI

Posted by Asia Slowinska on 11/3/15 10:00 AM

In October 2015, at the ACM CCS 2015 conference, my colleagues Dennis Andriesse and Victor van der Veen from the Vrije Universiteit Amsterdam presented a paper, co-authored by me, a researcher at Lastline Labs, on control-flow integrity entitled "Practical Context-Sensitive CFI". This paper discusses PathArmor, a system that protects users from exploits using return-oriented programming (ROP) to launch an attacker’s code on the victim machine.

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Topics: return-oriented programming, PathArmor, ROP

Lifting the Seams of the Shifu "Patchwork" Malware

Posted by Clemens Kolbitsch on 9/4/15 3:55 PM

Authored by: Clemens Kolbitsch and Arunpreet Singh

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Topics: Evasive Malware, Full-system Emulation, APT, Shifu, Banking Trojan

Awakening Dormant Functionality in Malware Programs

Posted by Clemens Kolbitsch on 8/26/15 10:00 AM

Authored by: Clemens Kolbitsch, Joe Giron, and Arunpreet Singh

Over recent years, we have seen a rapid evolution of security products. Whenever a new technology is introduced, it tackles shortcomings of its predecessor, but also faces new challenges as attackers adapt to the changing security landscape.

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Topics: Malware Behavior, Full-system Emulation, Wild Neutron, Dormant Functionality

Turla: APT Group Gives Their Kernel Exploit a Makeover

Posted by Arunpreet Singh on 7/30/15 9:00 AM

Authored by: Arunpreet SinghClemens Kolbitsch

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Topics: Evasive Malware, Turla, Kernel exploits, APT

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