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When one isn’t enough: This shady malware will infect your PC with dual Trojans



New variant of trojan malware puts your personal information at risk
NanoCore RAT can steal passwords, payment details, and secretly record audio and video of Windows users.

A new malware variant with a low detection rate able to deliver multiple Trojans to infected systems has been disclosed by researchers. 

This week, the cybersecurity team at Fortinet said a recent sample of the dropper reveals the new malware is designed to drop both RevengeRAT and WSHRAT on vulnerable Windows systems. 

The sample dropper begins the infection process with JavaScript code and URL-encoded information contained in a text editor. Once decoded, the team found VBScript obfuscated with character replacements. 

This VBScript code is then able to call a Shell.Application object that generates a new script file, A6p.vbs, which fetches a payload — an additional VBScript — from an external source. 

The strings in the new code, which are also obfuscated in a likely attempt to avoid detection, pull a script file called Microsoft.vbs from a remote server and saves it in the Windows temporary folder. 

“Once the aforementioned code is executed, it creates a new WScript.Shell object and collects OS environment and hardcoded data, which will eventually end in running the newly created script (GXxdZDvzyH.vbs) by calling the VBScript interpreter with the “//B” parameter,” the researchers say. “This enables “batch-mode” and disables any potential warnings or alerts that can occur during execution.”

A new key is then added to the Windows registry, PowerShell commands are executed to bypass execution policies, and the Revenge RAT payload is deployed. 

See also: DanaBot banking Trojan jumps from Australia to Germany in quest for new targets

Revenge RAT is a Trojan previously connected to campaigns targeting financial establishments, governments, and IT companies. 

Once deployed by the new malware dropper, Revenge RAT connects to two command-and-control (C2) servers and collects system data from the victim before transferring this information to the C2s. 

IP addresses, volume data, machine names, user names, whether or not a webcam has been detected, CPU data, language, and information relating to antivirus products and firewall installations are stolen. 

The Trojan is also able to receive commands from a C2 to load malicious ASM code in memory for additional exploits. 

However, the deployment of one Trojan is not the end of the attack chain. The malware dropper also executes WSH RAT as a payload, using same Microsoft.vbs script — with a few tweaks. 

WSH RAT is often actively distributed in phishing messages masquerading as well-known banks. The Trojan is being sold publicly online on a subscription basis to threat actors. 

CNET: Demonstrators scan public faces in DC to show lack of facial recognition laws

Version 1.6 of WSH RAT is loaded and this malware contains more functionality than its counterpart; including methods to maintain persistence, data theft, and information processing. 

Among 29 functions is the facility to check the current user’s rights, and “depending on which ones are used, it will remain as is or elevate itself (startupElevate()) to a higher user access level,” the researchers say. 

The Trojan will also perform a security check to disable the current security context.

TechRepublic: New phishing email campaign impersonates US postal service to deliver malware

WSH RAT focuses on stealing information harvested from popular browsers including Google Chrome and Mozilla Firefox. However, the malware also contains other features, such as executing files, rebooting the victim machine, uninstalling programs, and keylogging. 

Also of note in the malware space this month is the emergence of Emotet with new functionality. The modular malware, which has proven popular with cybercriminals, now appears to be utilizing stealth tactics once employed by Trickbot.

Previous and related coverage

Have a tip? Get in touch securely via WhatsApp | Signal at +447713 025 499, or over at Keybase: charlie0

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Data Management and Secure Data Storage for the Enterprise



This free 1-hour webinar from GigaOm Research brings together experts in data management and security, featuring GigaOm Analyst Enrico Signoretti and special guest from RackTop Systems, Jonathan Halstuch. The discussion will focus on data storage and how to protect data against cyberattacks.

Most of the recent news coverage and analysis of cyberattacks focus on hackers getting access and control of critical systems. Yet rarely is it mentioned that the most valuable asset for the organizations under attack is the data contained in these systems.

In this webinar, you will learn about the risks and costs of a poor data security management approach, and how to improve your data storage to prevent and mitigate the consequences of a compromised infrastructure.

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CISO Podcast: Talking Anti-Phishing Solutions



Simon Gibson earlier this year published the report, “GigaOm Radar for Phishing Prevention and Detection,” which assessed more than a dozen security solutions focused on detecting and mitigating email-borne threats and vulnerabilities. As Gibson noted in his report, email remains a prime vector for attack, reflecting the strategic role it plays in corporate communications.

Earlier this week, Gibson’s report was a featured topic of discussions on David Spark’s popular CISO Security Vendor Relationship Podcast. In it, Spark interviewed a pair of chief information security officers—Mike Johnson, CISO for SalesForce, and James Dolph, CISO for Guidewire Software—to get their take on the role of anti-phishing solutions.

“I want to first give GigaOm some credit here for really pointing out the need to decide what to do with detections,” Johnson said when asked for his thoughts about selecting an anti-phishing tool. “I think a lot of companies charge into a solution for anti-phishing without thinking about what they are going to do when the thing triggers.”

As Johnson noted, the needs and vulnerabilities of a large organization aligned on Microsoft 365 are very different from those of a smaller outfit working with GSuite. A malicious Excel macro-laden file, for example, poses a credible threat to a Microsoft shop and therefore argues for a detonation solution to detect and neutralize malicious payloads before they can spread and morph. On the other hand, a smaller company is more exposed to business email compromise (BEC) attacks, since spending authority is often spread among many employees in these businesses.

Gibson’s radar report describes both in-line and out-of-band solutions, but Johnson said cloud-aligned infrastructures argue against traditional in-line schemes.

“If you put an in-line solution in front of [Microsoft] 365 or in front of GSuite, you are likely decreasing your reliability, because you’ve now introduced this single point of failure. Google and Microsoft have this massive amount of reliability that is built in,” Johnson said.

So how should IT decision makers go about selecting an anti-phishing solution? Dolph answered that question with a series of questions of his own:

“Does it nail the basics? Does it fit with the technologies we have in place? And then secondarily, is it reliable, is it tunable, is it manageable?” he asked. “Because it can add a lot overhead, especially if you have a small team if these tools are really disruptive to the email flow.”

Dolph concluded by noting that it’s important for solutions to provide insight that can help organizations target their protections, as well as support both training and awareness around threats. Finally, he urged organizations to consider how they can measure the effectiveness of solutions.

“I may look at other solutions in the future and how do I compare those solutions to the benchmark of what we have in place?”

Listen to the Podcast: CISO Podcast

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Phish Fight: Securing Enterprise Communications



Yes, much of the world may have moved on from email to social media and culturally dubious TikTok dances, yet traditional electronic mail remains a foundation of business communication. And sadly, it remains a prime vector for malware, data leakage, and phishing attacks that can undermine enterprise protections. It doesn’t have to be that way.

In a just released report titled “GigaOm Radar for Phishing Prevention and Detection,” GigaOm Analyst Simon Gibson surveyed more than a dozen enterprise-focused email security solutions. He found a range of approaches to securing communications that often can be fitted together to provide critical, defense-in-depth protection against even determined attackers.

Figure 1. GigaOm Radar for Email Phishing Prevention and Detection

“When evaluating these vendors and their solutions, it is important to consider your own business and workflow,” Gibson writes in the report, stressing the need to deploy solutions that best address your organization’s business workflow and email traffic. “For some it may be preferable to settle on one comprehensive solution, while for others building a best-of-breed architecture from multiple vendors may be preferable.”

In a field of competent solutions, Gibson found that Forcepoint, purchased recently by Raytheon, stood apart thanks to the layered protections provided by its Advanced Classification Engine. Area 1 and Zimperium, meanwhile, are both leaders that exhibit significant momentum, with Area 1 boosted by its recent solution partnership with Virtru, and Zimperium excelling in its deep commitment to mobile message security.

A mobile focus is timely, Gibson says in a video interview for GigaOm. He says companies are “tuning the spigot on” and enabling unprecedented access and reliance on mobile devices, which is creating an urgent need to get ahead of threats.

Gibson’s conclusion in the report? He singles out three things: Defense in depth, awareness of existing patterns and infrastructure, and a healthy respect for the “human factor” that can make security so hard to lock down.

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