Cisco Blogs

Threat Research

  • Player 1 Limps Back Into the Ring – Hello again, Locky!

    - June 21, 2017 - 0 Comments

    This post was authored by Alex Chiu, Warren Mercer, and Jaeson SchultzSean Baird and Matthew Molyett contributed to this post.

    Back in May, the Necurs spam botnet jettisoned Locky ransomware in favor of the new Jaff ransomware variant. However, earlier this month Kaspersky discovered a vulnerability within Jaff which allowed them to create a decryptor. This turn of events seems to have caused the miscreants behind Necurs to scramble to distribute a different ransomware payload. Falling back on their old tricks, they have selected to re-distribute Locky ransomware. The malware is being transmitted via email using an .exe file encapsulated within two compressed .zip archives.

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  • Talos Targets Disinformation with Fake News Challenge Victory

    - June 20, 2017 - 0 Comments

    This post was authored by Sean Baird with contributions by Doug Sibley and Yuxi Pan

     

    Executive Summary
    For the past several months, the problem of “fake news” has been abuzz in news headlines, tweets, and social media posts across the web. With historical roots in information warfare and disinformation, “fake news” is a different kind of cyber-threat affecting people all around the globe. Using advanced machine learning and artificial intelligence technology, Talos researchers set their sights on this different kind of cyber-threat and beat out over 80 registered teams worldwide to claim first place in the Fake News Challenge.

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  • Delphi Used To Score Against Palestine

    - June 19, 2017 - 0 Comments

    Executive Summary

    This blog was authored by Paul Rascagneres and Warren Mercer with contributions from Emmanuel Tacheau, Vanja Svajcer and Martin Lee.
    Talos continuously monitors malicious emails campaigns. We identified one specific spear phishing campaign launched against targets within Palestine, and specifically against Palestinian law enforcement agencies. This campaign started in April 2017, using a spear phishing campaign to deliver the MICROPSIA payload in order to remotely control infected systems. Although this technique is not new, it remains an effective technique for attackers.

    The malware itself was developed in Delphi; in this article, we describe the features and the network communication to the command and control server used by the attackers. The threat actor has chosen to reference TV show characters and include German language words within the attack. Most significantly, the attacker has appeared to have used genuine documents stolen from Palestinian sources as well as a controversial music video as part of the attack.

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  • Vulnerability Spotlight: Multiple Foscam C1 Vulnerabilities Come in to Focus

    - June 19, 2017 - 0 Comments

    Executive Summary

    The Foscam C1 is a webcam that is marketed for use in a variety of applications including home security monitoring. As an indoor webcam, it is designed to be set up inside of a building and features the ability to be accessed remotely via a web interface or from within a mobile application. Talos recently identified several vulnerabilities in the Foscam C1 camera that could be used by attackers for a variety of purposes including access and retrieval of sensitive information stored on the camera, execution of arbitrary commands within the camera’s operating system, and in several cases, completely compromise the device. As these cameras are commonly deployed in sensitive locations and used as baby monitors, security cameras, etc. it is recommended that affected devices be updated as quickly as possible to ensure that they are no longer vulnerable.

    In accordance with our responsible disclosure policy, Talos has worked with Foscam to resolve these issues, which has resulted in the release of a firmware update addressing them.

    Vulnerability Details

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  • Deep dive in Lexmark Perceptive Document Filters Exploitation

    - June 14, 2017 - 1 Comment

    This post authored by Marcin Noga with contributions from Nick Biasini

    Introduction

    Talos discovers and releases software vulnerabilities on a regular basis. We don’t always publish a deep technical analysis of how the vulnerability was discovered or its potential impact. This blog will cover these technical aspects including discovery and exploitation. Before we deep dive into the technical aspects of exploitation, let’s start with an introduction to Lexmark Perceptive Document Filters and MarkLogic. Specifically, how these products are connected and what their purpose is. There are articles across the Internet discussing these products and their purposes. Additionally, you can read the Perceptive Documents Filters product description directly.

    In general Perceptive Document Filters are used in Big Data, eDiscovery, DLP, email archival, content management, business intelligence, and intelligent capture. There are 3 major companies with product offerings in this space. Lexmark is one of them with Oracle and HP being the other two.

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  • Microsoft Patch Tuesday – June 2017

    - June 13, 2017 - 1 Comment

    Today, Microsoft has release their monthly set of security updates designed to address vulnerabilities. This month’s release addresses 92 vulnerabilities with 17 of them rated critical and 75 rated important. Impacted products include Edge, Internet Explorer, Office, Sharepoint, Skype for Business, Lync, and Windows.

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