Threat Roundup for May 22 to May 29

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between May 22 and May 29. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristics,...

Threat Source newsletter for May 28, 2020

Newsletter compiled by Jon Munshaw. Welcome to this week’s Threat Source newsletter — the perfect place to get caught up on all things Talos from the past week. We need to start things off by wishing a Happy Birthday to Beers with Talos! The first episode was released on May 12, 2017. To celebrat...

Dynamic Data Resolver (DDR) — IDA Plugin 1.0 beta

By Holger Unterbrink Executive summaryStatic reverse-engineering in IDA can often be problematic. Certain values are calculated at run time, which makes it difficult to understand what a certain basic block is doing. If you try to perform dynamic analysis by debugging a piece of malware, the...

Beers with Talos Ep. #82: Talos IR quarterly threat trends

Beers with Talos BWT Podcast episode No. 82 is now available. Download this episode and subscribe to Beers with Talos: If iTunes and Google Play aren't your thing, click here. Recorded May 8, 2020 Brad Garnett from Cisco Talos Incident Response joins us today to talk about DFIR, the Talos Quarter...

Threat Source newsletter for May 21, 2020

Newsletter compiled by Jon Munshaw. Welcome to this week’s Threat Source newsletter — the perfect place to get caught up on all things Talos from the past week. Beers with Talos chugs on during quarantine with the latest episode of “The In-Between.” Once again, the hosts talk about everything but...

Vulnerability Spotlight: Authentication bypass vulnerability in some Epson projectors

Yuri Kramarz of Cisco Talos discovered this vulnerability. Blog by Jon Munshaw. The Epson EB-1470UI Projector contains an authentication bypass vulnerability in its web control functionality. This projector allows users to control it over the web. However, an adversary could trick a user into...

Vulnerability Spotlight: Memory corruption vulnerability in GNU Glibc leaves smart vehicles open to attack

By Sam Dytrych and Jason Royes. Executive summary Modern automobiles are complex machines, merging both mechanical and computer systems under one roof. As automobiles become more advanced, additional sensors and devices are added to help the vehicle understand its internal and external...

Threat Source newsletter for May 14, 2020

Newsletter compiled by Jon Munshaw. Welcome to this week’s Threat Source newsletter — the perfect place to get caught up on all things Talos from the past week. Our main focus this week is on Astaroth. This is a malware family that has been targeting Brazil with a variety of lures, including...

The wolf is back...

By Warren Mercer, Paul Rascagneres and Vitor Ventura. News summaryThai Android devices and users are being targeted by a modified version of DenDroid we are calling "WolfRAT," now targeting messaging apps like WhatsApp, Facebook Messenger and Line.We assess with high confidence that this modified...

Beers with Talos Ep. #81: "The In-Between," Vol. 3

Beers with Talos BWT Podcast episode No. 81 is now available. Download this episode and subscribe to Beers with Talos: If iTunes and Google Play aren't your thing, click here. Recorded May 1, 2020 Sammi is back and the rest of the crew is here to hang out and chat. As is The In-Between Way — we...

Vulnerability Spotlight: Multiple vulnerabilities in Nitro Pro PDF reader

Aleksandar Nikolic and Cory Duplantis of Cisco Talos discovered these vulnerabilities. Blog by Jon Munshaw. Cisco Talos recently discovered two code execution vulnerabilities and an information disclosure flaw in Nitro Pro PDF reader. Nitro PDF allows users to save, read, sign and edit PDFs on...

Threat Roundup for May 8 to May 15

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between May 8 and May 15. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristics,...

Beers with Talos Ep. #80: Working securely in a new (not yet) normal

Beers with Talos BWT Podcast episode No. 80 is now available. Download this episode and subscribe to Beers with Talos: If iTunes and Google Play aren't your thing, click here. Recorded April 24, 2020 Matt isn’t with us today, but the rest of the crew discusses some current security issues in our...

The basics of a ransomware infection as Snake, Maze expands

By Joe Marshall @ImmortanJo3 There have recently been several high-profile ransomware campaigns utilizing Maze and Snake malware. From critical medical supply companies, to large logistics firms, many businesses of all sizes have fallen victim to this cybercrime wave. When an organization falls...

Threat Spotlight: Astaroth — Maze of obfuscation and evasion reveals dark stealer

By Nick Biasini, Edmund Brumaghin and Nick Lister. Cisco Talos is detailing an information stealer, Astaroth, that has been targeting Brazil with a variety of lures, including COVID-19 for the past nine to 12 months.Complex maze of obfuscation and anti-analysis/evasion techniques implemented by...

Microsoft Patch Tuesday — May 2020: Vulnerability disclosures and Snort coverage

By Jon Munshaw. Microsoft released its monthly security update today, disclosing vulnerabilities across many of its products and releasing corresponding updates. This month's Patch Tuesday covers 111 vulnerabilities. Fifteen of the flaws Microsoft disclosed are considered critical. There are also...

Vulnerability Spotlight: Code execution vulnerability in Microsoft Excel

Marcin “Icewall” Noga of Cisco Talos discovered this vulnerability. Blog by Jon Munshaw. Cisco Talos recently discovered a code execution vulnerability in some versions of Microsoft Excel. An attacker could exploit this vulnerability by tricking the victim into opening a specially crafted Excel...

Vulnerability Spotlight: Code execution vulnerability in 3S CODESYS

Carl Hurd of Cisco Talos discovered these vulnerabilities. Blog by Jon Munshaw. Cisco Talos recently discovered an exploitable code execution vulnerability in 3S’ CODESYS Control SoftPLC runtime system. The system allows any embedded or PC device to convert into an IEC 61131-3-complaint industria...

Vulnerability Spotlight: Remote code execution vulnerabilities in Adobe Acrobat Reader

Aleksandar Nikolic of Cisco Talos discovered this vulnerability. Blog by Jon Munshaw. Cisco Talos recently discovered two remote code execution vulnerabilities in Adobe Acrobat Reader. Acrobat supports a number of features, including the ability to process embedded JavaScript. These flaws...

Threat Roundup for May 1 to May 8

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between May 1 and May 8. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristics,...

Threat Source newsletter for May 7, 2020

Newsletter compiled by Jon Munshaw. Welcome to this week’s Threat Source newsletter — the perfect place to get caught up on all things Talos from the past week. With all of us working from home, Beers with Talos episodes are coming out faster than ever. This week, we have an actual episode with...

Vulnerability Spotlight: Multiple code execution vulnerabilities in Accusoft ImageGear

Emmanuel Tacheau of Cisco Talos discovered these vulnerabilities. Blog by Jon Munshaw. Cisco Talos recently discovered four code execution vulnerabilities in Accusoft ImageGear. The ImageGear library is a document-imaging developer toolkit to assist users with image conversion, creation, editing...

Threat Roundup for April 24 to May 1

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between April 24 and May 1. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristics,...

Threat Source newsletter for April 30, 2020

Newsletter compiled by Jon Munshaw. Welcome to this week’s Threat Source newsletter — the perfect place to get caught up on all things Talos from the past week. Our newest research post focuses on the Aggah campaign. Threat actors are pushing Aggah to victims via malicious Microsoft Word document...

Beers with Talos Ep. #79: The In-Between vol. 2 (It's a better name than Quittin' Time)

Beers with Talos BWT Podcast episode No. 79 is now available. Download this episode and subscribe to Beers with Talos: If iTunes and Google Play aren't your thing, click here. Recorded April 22, 2020 We are renaming these episodes. “Quittin’ time” was OK and all, but “The In-between” better...

Upgraded Aggah malspam campaign delivers multiple RATs

By Asheer Malhotra Cisco Talos has observed an upgraded version of a malspam campaign known to distribute multiple remote access trojans RATs.The infection chain utilized in the attacks is highly modularized.The attackers utilize publicly available infrastructure such as Bitly and Pastebin spread...

Threat Roundup for April 17 to April 24

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between April 17 and April 24. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral...

Threat Source newsletter for April 23, 2020

Newsletter compiled by Jon Munshaw. Welcome to this week’s Threat Source newsletter — the perfect place to get caught up on all things Talos from the past week. There’s a new Beers with Talos podcast out now. And guess what? They actually talk about security this time! The guys are looking for...

Threat Spotlight: MedusaLocker

By Edmund Brumaghin, with contributions from Amit Raut. Overview MedusaLocker is a ransomware family that has been observed being deployed since its discovery in 2019. Since its introduction to the threat landscape, there have been several variants observed. However, most of the functionality...

PoetRAT: Python RAT uses COVID-19 lures to target Azerbaijan public and private sectors

By Warren Mercer, Paul Rascagneres and Vitor Ventura. News summaryAzerbaijan government and energy sector likely targeted by an unknown actor.From the energy sector, the actor demonstrates interest in SCADA systems related to wind turbines.The actor uses Word documents to drop malware that allows...

Vulnerability Spotlight: Zoom Communications user enumeration

Video conferencing and calling software has spiked in popularity as individuals across the globe are forced to stay home due to the COVID-19 pandemic. There are a plethora of players in this space, with one or two getting increased attention. One service in particular — Zoom — has received an...

Talos Incident Response announces new, lower price through July 25

Today’s world looks very different than three months ago. More people work remotely than ever before. IT teams work around the clock to expand capacity and new software and services are being deployed to handle the load. Within this new remote environment, we have seen new malware families and...

Beers with Talos Ep. #78: Fingerprints and hunting parties

Beers with Talos BWT Podcast episode No. 78 is now available. Download this episode and subscribe to Beers with Talos: If iTunes and Google Play aren't your thing, click here. Recorded April 10, 2020 We have a couple great topics today — and only one of them is a COVID-19 related topic. So, it...

Fingerprint cloning: Myth or reality?

Phone, computer fingerprint scanners can be defeated with 3-D printing By Paul Rascagneres and Vitor Ventura. Executive summaryPasswords are the traditional authentication methods for computers and networks. But passwords can be stolen. Biometric authentication seems the perfect solution for that...

Threat Roundup for April 10 to April 17

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between April 10 and April 17. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral...

Threat Roundup for April 3 to April 10

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between April 3 and April 10. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristic...

Threat Source newsletter for April 16, 2020

Newsletter compiled by Jon Munshaw. Welcome to this week’s Threat Source newsletter — the perfect place to get caught up on all things Talos from the past week. It’s what — week 5 of this quarantine in the U.S.? Week 6? We’ve lost count. And so did the Beers with Talos guys. But lucky for you, th...

Quarterly Report: Incident Response trends in Spring 2020

By David Liebenberg. Cisco Talos Incident Response CTIR engagements continue to be dominated by ransomware and commodity trojans. As alluded to in last quarter’s report, ransomware actors have begun threatening to release sensitive information from victims as a means of further compelling them to...

Microsoft Patch Tuesday — April 2020: Vulnerability disclosures and Snort coverage

By Jon Munshaw. Microsoft released its monthly security update today, disclosing vulnerabilities across many of its products and releasing corresponding updates. This month's Patch Tuesday covers 115 vulnerabilities. Nineteen of the flaws Microsoft disclosed are considered critical. The remainder...

Beers with Talos Ep. #77: Quittin’ Time, Vol. 1 — Tigers and tales of the in-between

Beers with Talos BWT Podcast episode No. 77 is now available. Download this episode and subscribe to Beers with Talos: If iTunes and Google Play aren't your thing, click here. Recorded April 3, 2020 We’re kinda bored. We figured you are too. So we decided to get together between normal recordings...

Threat Source newsletter for April 9, 2020

Newsletter compiled by Jon Munshaw. Welcome to this week’s Threat Source newsletter — the perfect place to get caught up on all things Talos from the past week. Nearly all devices have some sort of fingerprint scanner now, used to log users in. But these scanners prevent their own unique attack...

Vulnerability Spotlight: Information disclosure vulnerability in Microsoft Media Foundation

Marcin “Icewall” Noga of Cisco Talos discovered this vulnerability. Blog by Jon Munshaw. Microsoft Media Foundation contains an information disclosure vulnerability that could allow an attacker to eventually remotely execute code on the victim machine. Media Foundation is a COM-based multimedia...

AZORult brings friends to the party

By Vanja Svajcer. NEWS SUMMARY We are used to ransomware attacks and big game hunting making the headlines, but there is an undercurrent of other attack types that allow attackers to monetize their efforts in a less intrusive way.Here, we discuss a multi-pronged cyber criminal attack using a numb...

Beers with Talos Ep. #76: When security hits home (and stays)

Beers with Talos BWT Podcast episode No. 76 is now available. Download this episode and subscribe to Beers with Talos: If iTunes and Google Play aren't your thing, click here. Recorded March 27, 2020 Our goal is always to talk to you about what's on our minds. Right now, we are pretty sure we all...

Threat Roundup for March 27 to April 3

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between March 27 and April 3. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral characteristic...

Threat Source newsletter (April 2, 2020)

Newsletter compiled by Jon Munshaw. Welcome to this week’s Threat Source newsletter — the perfect place to get caught up on all things Talos from the past week. As long as COVID-19 is in the headlines which is going to be a long time actors are going to try and capitalize. We fully expect to see ...

Trickbot: A primer

By Chris Neal Executive Summary Trickbot remains one of the most sophisticated banking trojans in the landscape while constantly evolving.Highly modular, Trickbot can adapt to different environments with the help of its various modules.The group behind Trickbot has expanded their activities beyon...

COVID-19 relief package provides another platform for bad actors

The ongoing COVID-19 pandemic continues to yield new subject matter that bad actors can turn into fodder for enticing victims into clicking on malicious links and attachments. On March 27, the CARES Act was signed into law by the President, enacting a wide range of stimulus packages designed to a...

Threat Update: COVID-19

Executive Summary The COVID-19 pandemic is changing everyday life for workers across the globe. Cisco Talos continues to see attackers take advantage of the coronavirus situation to lure unsuspecting users into various pitfalls such as phishing, fraud, and disinformation campaigns. Talos has not...

Threat Roundup for March 20 to March 27

Today, Talos is publishing a glimpse into the most prevalent threats we've observed between March 20 and March 27. As with previous roundups, this post isn't meant to be an in-depth analysis. Instead, this post will summarize the threats we've observed by highlighting key behavioral...