Blog keyword search

VB2017 video: Turning Trickbot: decoding an encrypted command-and-control channel

Trickbot, a banking trojan which appeared this year, seems to be a new, more modular, and more extensible malware descendant of the notorious Dyre botnet trojan. At VB2017, Symantec researcher Andrew Brandt presented a walkthrough of a typical Trickbot in…
Trickbot, first reported a year ago by Malwarebytes researcher Jérôme Segura as the successor of Dyre/Dyreza, has become perhaps the most important banking trojan of 2017. It is… https://www.virusbulletin.com/blog/2017/11/vb2017-video-turning-trickbot-decoding-encrypted-command-and-control-channel/

Ebury and Mayhem server malware families still active

Ebury and Mayhem, two families of Linux server malware, about which VB published papers back in 2014, are still active and have received recent updates.
Whether it is to send spam or to redirect web traffic to malicious payloads, compromised (Linux) web servers are the glue in many a malware campaign. Two such networks of… https://www.virusbulletin.com/blog/2017/10/ebury-and-mayhem-server-malware-families-still-active/

VB2017 preview: Offensive malware analysis: dissecting OSX/FruitFly.B via a custom C&C server

We preview Patrick Wardle's VB2017 paper, in which the Synack researcher analyses the mysterious OSX/FruitFly malware by setting up a custom C&C server.
Apart from the odd taxi driver loudly making the claim, the idea that "Macs don't get malware" has become something of the past. Nevertheless, most security researchers focus on… https://www.virusbulletin.com/blog/2017/09/vb2017-preview-offensive-malware-analysis-dissecting-osxfruitfly-custom-cc-server/

Hot FinSpy research completes VB2017 programme

Researchers from ESET have found a new way in which the FinSpy/FinFisher 'government spyware' can infect users, details of which they will present at VB2017 in Madrid.
The infamous FinSpy (or FinFisher) government spyware has managed to keep a low profile in recent years, though its use of two Microsoft zero-days (CVE-2017-0199 and… https://www.virusbulletin.com/blog/2017/09/hot-finspy-research-makes-vb2017-programme-complete/

VB2017 preview: Android reverse engineering tools: not the usual suspects

We preview the VB2017 paper by Fortinet researcher Axelle Apvrille, in which she looks at some less obvious tools for reverse engineering Android malware.
Six years ago (coincidentally the last time the VB conference was held in Spain) saw the first VB conference paper presented on Android malware, which at that time was still an… https://www.virusbulletin.com/blog/2017/09/vb2017-preview-android-reverse-engineering-tools-not-usual-suspects/

Malicious CCleaner update points to a major weakness in our infrastructure

Researchers from Cisco Talos have found that a recent version of the widely used CCleaner tool installed malware on the machine.
For the security community, 2017 might well be called the year of the update: two of the biggest security stories – the WannaCry outbreak and the Equifax breach – involved… https://www.virusbulletin.com/blog/2017/09/malicious-ccleaner-update-points-major-weakness-our-infrastructure/

Despite the profitability of ransomware there is a good reason why mining malware is thriving

Though ransomware is far more profitable than using a compromised PC to mine bitcoins, the global distribution of malware means that there are many botnets for which mining is the most efficient way to extract money out of a PC.
When, a few years ago, a friend and I were analysing a rather large botnet and we saw some network traffic indicating that it was engaged in Bitcoin mining, we felt rather… https://www.virusbulletin.com/blog/2017/09/despite-profitability-ransomware-there-good-reason-why-mining-malware-thriving/

VB2017 preview: Crypton - exposing malware's deepest secrets

We preview the VB2017 paper by Julia Karpin and Anna Dorfman (F5 networks), in which they present a tool to decrypt encrypted parts of malware.
Ask a programmer to perform the same task twice and they will write a tool that automates it. Malware analysts are no different, and the Virus Bulletin Conference has a long… https://www.virusbulletin.com/blog/2017/09/vb2017-preview-crypton-exposing-malwares-deepest-secrets/

VB2017 preview: Mariachis and jackpotting: ATM malware from Latin America

We preview the VB2017 presentation by Kaspersky Lab researchers Thiago Marques and Fabio Assolini in which they look at malware targeting ATMs in Latin America.
A few years ago, I saw an ATM being opened for the first time. "Hold on," I thought, "this is really just a Windows XP PC!" Suddenly, I realised that, to attack an ATM,… https://www.virusbulletin.com/blog/2017/08/vb2017-preview-mariachis-and-jackpotting-atm-malware-latin-america/

The WannaCry kill switch wasn't inserted to make someone a hero

Following the arrest of WannaCry hero Marcus Hutchings, suggestions have been made that he was behind the WannaCry malware itself, and that he inserted the kill switch to make himself a hero. This seems highly unlikely.
Almost three months after its damaging outbreak, the WannaCry malware remains shrouded in mystery. Last week's arrest of security researcher Marcus Hutchings, better known and… https://www.virusbulletin.com/blog/2017/08/wannacry-kill-switch-wasnt-inserted-make-someone-hero/

By removing VPNs from its Chinese App Store, Apple turns its biggest security asset against its users

To comply with Chinese laws, Apple has removed all iOS VPN apps from its Chinese app store. This means that the company uses iOS's strongest security asset, its tightly controlled App Store, against its own users.
A little over a month ago, Apple's iPhone celebrated its tenth birthday. The iPhone has been one of the biggest commercial success stories ever, but it has also been a great… https://www.virusbulletin.com/blog/2017/08/removing-vpns-its-chinese-app-store-apple-turns-its-biggest-security-asset-aggasnt-its-users/

48 hours after initial reports, many mysteries remain around the latest ransomware/wiper threat

Whether you call it Petya, NotPetya, Nyetya or Petna, there are still many mysteries surrounding the malware that has been causing havoc around the world.
"What's in a name? that which we call a rose By any other name would smell as sweet" Shakespeare's philosophising can equally be applied to malware, and whether you call it… https://www.virusbulletin.com/blog/2017/06/48-hours-after-initial-reports-many-mysteries-around-latest-ransomwarewiper-threat-remain/

VB2016 paper: Steam stealers: it's all fun and games until someone's account gets hijacked

Last year, Kaspersky Lab researcher Santiago Pontiroli and PwC's Bart Parys presented a VB2016 paper analysing the malicious threats faced by users of the Steam online gaming platform, and highlighting how organized criminals are making money with these p…
The online games market is huge, and the Steam platform is a huge player in that market. Users registered on the Steam platform use their credit cards to buy content, and… https://www.virusbulletin.com/blog/2017/06/vb2016-paper-steam-stealers-its-all-fun-and-games-until-someones-account-gets-hijacked/

Research paper shows it may be possible to distinguish malware traffic using TLS

Researchers at Cisco have published a paper describing how it may be possible to use machine learning to distinguish malware command-and-control traffic using TLS from regular enterprise traffic, and to classify malware families based on their encrypted C…
Researchers at Cisco have published a paper (PDF) describing how it may be possible to use machine learning to distinguish malware command-and-control (C&C) traffic using TLS from… https://www.virusbulletin.com/blog/2017/06/research-paper-shows-it-may-be-possible-distinguish-malware-traffic-using-tls/

Consumer spyware: a serious threat with a different threat model

Consumer spyware is a growing issue and one that can have serious consequences: its use is increasingly common in domestic violence. But do our threat models consider the attacker with physical access to, and inside knowledge of the victim?
We all know the risks of having a device infected with malware: an anonymous adversary far away can encrypt your files and hold them to ransom; they can steal your personal data… https://www.virusbulletin.com/blog/2017/04/consumer-spyware-serious-threat-different-threat-model/

VB2016 paper: Debugging and monitoring malware network activities with Haka

In their VB2016 paper, Stormshield researchers Benoît Ancel and Mehdi Talbi introduced Haka, an open-source language to monitor, debug and control malicious network traffic. Both their paper and the video recording of their presentation are now available …
Anyone who has ever analysed malware through its network communications will knows that this often involves ad-hoc scripts in languages like Python or Perl to decode the traffic.… https://www.virusbulletin.com/blog/2017/04/vb2016-paper-debugging-and-monitoring-malware-network-activities-haka/

VB2016 paper: One-Click Fileless Infection

Symantec researchers Himanshu Anand and Chastine Menrige explain how a single click can lead to a compromised machine, without malware ever being stored on disk.
Over the last few years, we have seen a sharp increase in 'fileless' infections, where a machine is compromised without a malicious file ever being written to disk. Though not… https://www.virusbulletin.com/blog/2017/03/vb2016-paper-one-click-fileless-infection/

VB2016 video: Nymaim: the Untold Story

Until very recently, the Nymaim banking trojan was a serious problem in Poland. Today, we publish the video of the VB2016 presentation by CERT Polska researchers Jarosław Jedynak and Maciej Kotowicz, in which they analyse this malware-dropper-turned-banki…
Every year, the Virus Bulletin conference programme includes a number of 'last-minute' papers: presentations on topics that are so hot, they are added to the programme only a few… https://www.virusbulletin.com/blog/2017/02/vb2016-video-nymaim-untold-story/

VB2016 paper: Great crypto failures

Crypto is hard, and malware authors often make mistakes. At VB2016, Check Point researchers Yaniv Balmas and Ben Herzog discussed the whys and hows of some of the crypto blunders made by malware authors. Today, we publish their paper and the recording of …
"More malware is using cryptography, and more malware is using better cryptography," said Check Point researcher Yaniv Balmas on stage during VB2016. While the increased use of… https://www.virusbulletin.com/blog/2017/01/vb2016-paper-great-crypto-failures/

Ransomware would be much worse if it wasn't for email security solutions

The latest VBSpam test brings good news: at least 199 out of every 200 emails containing a malicious attachment were blocked by email security solutions. All of the full solutions tested achieved a VBSpam award, with five earning a VBSpam+ award.
Many experts believe that ransomware is set to become an even worse problem in 2017 than it was in 2016 — which is rather bad news, given the damage it has already done. Still,… https://www.virusbulletin.com/blog/2017/01/ransomware-would-be-so-much-worse-if-it-wasnt-email-security-solutions/

« Previous 123456 Next »