Popular Malware Families Using 'Process Doppelgänging' to Evade Detection

The fileless code injection technique called Process Doppelgänging is actively being used by not just one or two but a large number of malware families in the wild, a new report shared with The Hacker News revealed. Discovered in late 2017, Process Doppelgänging is a fileless variation of Process...

CB TAU Threat Intelligence Notification: Maze Ransomware

Maze Ransomware, also known as ChaCha Ransomware, has been discovered being distributed by the Fallout exploit kit. After the encryption, it will create a ransom note named ‘DECRYPT-FILES.html’ in each of the encrypted file’s folders. The bottom of the ransom note is a base64 string which contain...

A week in security (June 24 – 30)

Last week on Malwarebytes Labs, we peeled back the mystery on an elusive malware campaign that relied on blank JavaScript injections, detailed for readers our latest telemetry on the tricky GreenFlash Sundown exploit, and looked at one of the top campaigns directing traffic toward scareware pages...

This Week in Security News: Malvertising and Internet of Things Malware

Welcome to our weekly roundup, where we share what you need to know about the cybersecurity news and events that happened over the past few days. This week, learn about a new Internet of Things malware that’s bricked thousands of devices. Also, read about a ransomware family that’s using...

GreenFlash Sundown exploit kit expands via large malvertising campaign

Exploit kit activity has been relatively quiet for some time, with the occasional malvertising campaign reminding us that drive-by downloads are still a threat. However, during the past few days we noticed a spike in our telemetry for what appeared to be a new exploit kit. Upon closer inspection ...

Rapidly Growing Electrum Botnet Infects Over 152,000 Users; Steals $4.6 Million

An ongoing attack against Electrum Bitcoin wallets has just grown bigger and stronger with attackers now targeting the whole infrastructure of the exchange with a botnet of over 152,000 infected users, raising the amount of stolen users' funds to USD 4.6 million. Electrum has been facing cyber...

Interview with a malware hunter: Jérôme Segura

In our series "Interview with a malware hunter," our feature role today goes to Jérôme Segura, Malwarebytes’ Head of Threat Intelligence and world-renowned exploit kits researcher. The goal of this series is to introduce our readers to our malware intelligence crew by involving them in these Q&A...

Vidar and GandCrab: stealer and ransomware combo observed in the wild

We have been tracking a prolific malvertising campaign for several weeks and captured a variety of payloads, including several stealers. One that we initially identified as Arkei turned out to be Vidar, a new piece of malware recently analyzed in detail by Fumik0 in his post: Let’s dig into Vidar...

A week in security (December 17 – 23)

Last week on Labs we looked at Fuchsia OS as a possible alternative for Android, explained all the reasons why cybercriminals want to hack your phone, discussed a flaw in Twitter form that may have been abused by nation states, gave you a Christmas tech scams roundup, revealed why many online...

Underminer exploit kit improves in its latest iteration

One of the most interesting exploit kits we track is also a bit of an elusive one, and as such does not receive the same scrutiny as its RIG and Fallout counterparts. Underminer was mentioned in our Fall 2018 round up, and at the time was using CVE-2018-8174 Internet Explorer and CVE-2018-4878...

Novidade Exploit Kit Landing Page

Novidade exploit kit is a web exploit kit that operates by delivering malicious payload to the victim's computer. Successful infection will allow the attacker to download additional malware to the target...

This Week in Security News: Security Predictions and Malware Attacks

Welcome to our weekly roundup, where we share what you need to know about the cybersecurity news and events that happened over the past few days. This week, learn about the span of categories for Trend Micro’s 2019 Security Predictions. Also, learn about a new exploit kit that targets home or sma...

SamSam Ransomware

Summary The Department of Homeland Security DHS National Cybersecurity and Communications Integration Center NCCIC and the Federal Bureau of Investigation FBI are issuing this activity alert to inform computer network defenders about SamSam ransomware, also known as MSIL/Samas.A. Specifically, th...

Fallout Exploit Kit Releases the Kraken Ransomware on Its Victims

ARCHIVED STORY Fallout Exploit Kit Releases the Kraken Ransomware on Its Victims By John Fokker · October 30, 2018 Alexandr Solad and Daniel Hatheway of Recorded Future are coauthors of this post. Read Recorded Future’s version of this analysis. Rising from the deep, Kraken Cryptor ransomware has...

Fallout Exploit Kit Releases the Kraken Ransomware on Its Victims

ARCHIVED STORY Fallout Exploit Kit Releases the Kraken Ransomware on Its Victims By John Fokker · October 30, 2018 Alexandr Solad and Daniel Hatheway ofRecorded Future are coauthors of this post. Read Recorded Future’s version of this analysis. Rising from the deep, Kraken Cryptor ransomware has...

Fallout Exploit Kit Used in Malvertising Campaign to Deliver GandCrab Ransomware

Towards the end of August 2018, FireEye identified a new exploit kit EK that was being served up as part of a malvertising campaign affecting users in Japan, Korea, the Middle East, Southern Europe, and other countries in the Asia Pacific region. The first instance of the campaign was observed on...

Fallout Exploit Kit Landing Page

Fallout exploit kit is a web exploit kit that operates by delivering malicious payload to the victim's computer. Successful infection will allow the attacker to download additional malware to the target...

This Week in Security News: Hijacks and Healthcare

Welcome to our weekly roundup, where we share what you need to know about the cybersecurity news and events that happened over the past few days. This week, Singapore looks into the effectiveness of virtual browsers in an attempt to reduce cyberattacks on healthcare systems. Also, cybercriminals...

UnderMiner Exploit Kit Landing Page

UnderMiner exploit kit is a web exploit kit that operates by delivering malicious payload to the victim's computer. Successful infection will allow the attacker to download additional malware to the target...

‘Hidden Bee’ miner delivered via improved drive-by download toolkit

This blog post was authored by @hasherezade and Jérôme Segura. We recently detected a drive-by download attack trying to exploit CVE-2018-4878, a vulnerability in Flash Player, in a sequence that was not matching any of the exploit kit patterns that we currently track. Upon investigation, we...