Displaying items by tag: Malware

There is an old saying that says, when you can no longer do, you teach. This might be a relatively true axiom in the regular world, but in the world of cybercrime it is certainly not what you find happening. Instead, we tend to see that when organized groups no longer want the headache and hassle of doing the heavy lifting for attacks, they just build a platform to sell their tools to others. We have seen ransomware as a service, malware as a service, malvertising as a service, and even phishing as a service.

Ransomware is a pain in the ass, no matter what type it is. You have a piece of code that comes in, encrypts all your files, steals them and then you must deal with paying a ransom of some sort to either get your files back or prevent potential disclosure of sensitive information. It is not exactly what you want to deal with on a given day. So, when a new method of deploying ransomware pops up you can excuse our thinking “oh what fresh hell is this”.

When most people think of malware, they think of binaries that are downloaded to a drive and executed. However, that is only part of the malware world. The other side does not actually download the malicious binary directly to the drive and often injects it directly into memory though the use of scripts. The name fileless is a bit of a misnomer as there are always files to be found in different stages of the attack, it is more to the point that much of the malicious work is doe through injection of code into legitimate processes without the need to write much of it to disk.

Ransomware is a huge shadow over many businesses and individuals’ heads. It has loomed as a significant threat since the first stains hit the internet inside malicious zip files masquerading as “Xerox” documents. Since that time ransomware and the groups behind it have evolved significantly. At the top of the food chain are groups like Hive and Conti who have not only evolved their own tools but utilize strategic approaches to their organizations complete with acquisitions and, in some cases, attempted legitimate business fronts to further their activities.

April must be the month for new malware tools to be released, or at least announced as we have already heard about new forms of attack/infection from the group behind Emotet and now we hear that Conti has replaced BazarLoader with new malware tracked as Bumblebee. The newly disclosed malware is also under active development with multiple new features showing up this month.

Yesterday we told you that the gang behind Emotet was looking to used Excel add-ins as a possible new technique to compromise systems as part of their spamming campaigns. The detected techniques were labeled as potentially being part of research and development efforts on the part of the group TA542 due to changes Microsoft is making in Office (and ones many admins already push). The R&D efforts do not stop there though as multiple security research teams are now saying they have identified another new technique associated with Emotet.

TA542 the wonderful people that brought you Emotet appears to be in the middle of a development and testing cycle on new delivery methods. According to researchers at ProofPoint the creators or the Emotet Botnet are potentially looking to find a new delivery method in response to the, long overdue, default disabling of VBA based Macros by Microsoft in their office products. Although ProofPoint seems to think this is development testing, the activity could also be part of a more targeted campaign.

CISA has issued another warning that SCADA/ICS systems are being targeted for attack. This time they are in the sights of Nation-State groups and with customized tools. The tools are part of follow-on activities after the initial beachhead has been established. These days gaining initial access to a network, even for infrastructure, does not seem to be a difficult task for nation-state groups.

Some needs to let Gordan Freeman know that the Xen aliens are attacking Lambda, time to grab a crowbar and go to work. Ok, so there are no invaders from a border dimension coming and the Lambda in question is really Amazon’s Lambda Serverless function in AWS while the threat is a bit of crypto mining malware that appears to have been specifically written for Lambda in Google’s Go.

It looks like there has been another round of malware identified on the Google Play sore and, you guessed it, the majority is focused on banks and other financial institutions. The combination of apps found totals around 515,000 downloads. 500,000 of these downloads are being attributed to a new trojan dubbed Octo and appears to be distributed via fake apps uploaded to the Google Play store.