A week in security (July 19 – July 25)

Last week on Malwarebytes Labs: Stopransomwaredotgov, a one-stop hub for ransomware resources Beware, crypto-scammer seeks foreigner with BLOCK CHAIN ACCOUNT Remcos RAT delivered via Visual Basic US, EU, UK, NATO blame China for “reckless” exchange attacks HiveNightmare zero-day lets anyone be...

ICS Focused Malware

Updated July 20, 2021: The U.S. Government attributes this activity to Russian nation-state cyber actors and assess that Russian nation-state cyber actors deployed Havex malware against industrial control systems. For more information on Russian malicious cyber activity, refer...

Remcos RAT delivered via Visual Basic

This blog post was authored by Erika Noerenberg Introduction Over the past months, Malwarebytes researchers have been tracking a unique malspam campaign delivering the Remcos remote access trojan RAT via financially-themed emails. Remcos is often delivered via malicious documents or archive files...

BIOPASS RAT Uses Live Streaming Steal Victims’ Data

Online gambling companies in China are being targeted by a new remote access trojan RAT which, in addition to its predictable features — like file assessment and exfiltration — takes the novel approach of using live streaming to spy on the screens of its victims. The malware was identified by a...

Experts Uncover Malware Attacks Targeting Corporate Networks in Latin America

Cybersecurity researchers on Thursday took the wraps off a new, ongoing espionage campaign targeting corporate networks in Spanish-speaking countries, specifically Venezuela, to spy on its victims. Dubbed "Bandidos" by ESET owing to the use of an upgraded variant of Bandook malware, the primary...

Backdoor.Win32.Zombam.l Code Execution

Discovery / credits: Malvuln - malvuln.com c 2021 Original source: https://malvuln.com/advisory/9729e9fc004ea49d3c2ddee28736dae3B.txt Contact: [email protected] Media: twitter.com/malvuln Threat: Backdoor.Win32.Zombam.l Vulnerability: Unauthenticated URL Command Injection Description: Zombam...

Indexsinas SMB Worm Campaign Infests Whole Enterprises

The Indexsinas SMB worm is on the hunt for vulnerable environments to self-propagate into, researchers warned – with a particular focus on the healthcare, hospitality, education and telecommunications sectors. Its end goal is to drop cryptominers on compromised machines. Indexsinas, aka...

A New Spyware is Targeting Telegram and Psiphon VPN Users in Iran

Threat actors with suspected ties to Iran have been found to leverage instant messaging and VPN apps like Telegram and Psiphon to install a Windows remote access trojan RAT capable of stealing sensitive information from targets' devices since at least 2015. Russian cybersecurity firm Kaspersky,...

NoxPlayer Supply-Chain Attack is Likely the Work of Gelsemium Hackers

A new cyber espionage group named Gelsemium has been linked to a supply chain attack targeting the NoxPlayer Android emulator that was disclosed earlier this year. The findings come from a systematic analysis of multiple campaigns undertaken by the APT crew, with evidence of the earliest attack...

Experts Warn About Ongoing AutoHotkey-Based Malware Attacks

Cybersecurity researchers have uncovered an ongoing malware campaign that heavily relies on AutoHotkey AHK scripting language to deliver multiple remote access trojans RAT such as Revenge RAT, LimeRAT, AsyncRAT, Houdini, and Vjw0rm on target Windows systems. At least four different versions of th...

FIN7 Backdoor Masquerades as Ethical Hacking Tool

The notorious FIN7 cybercrime gang, a financially motivated group, is spreading a backdoor called Lizar under the guise of being a Windows pen-testing tool for ethical hackers. According to the BI.ZONE Cyber Threats Research Team, FIN7 is pretending to be a legitimate organization that hawks a...

Hackers Using Microsoft Build Engine to Deliver Malware Filelessly

Threat actors are abusing Microsoft Build Engine MSBuild to filelessly deliver remote access trojans and password-stealing malware on targeted Windows systems. The actively ongoing campaign is said to have emerged last month, researchers from cybersecurity firm Anomali said on Thursday, adding th...

A week in security (April 26 – May 2)

Last week on Malwarebytes Labs, we looked at which age range is most likely to be targeted by online predators, talked to Malwarebytes CISO John Donovan on our Lock and Code podcast, and explored the latest deepfake happenings. We also dug into a supply chain attack, discussed threats from a...

ToxicEye RAT hits Telegram app to spy, steal user data

By Habiba Rashid ToxicEye is a new remote access Trojan RAT malware targeting Telegram app users - The RAT has been used for more than 130 attacks over the past three months. This is a post from HackRead.com Read the original post: ToxicEye RAT hits Telegram app to spy, steal user data...

Cybercriminals Using Telegram Messenger to Control ToxicEye Malware

Adversaries are increasingly abusing Telegram as a "command-and-control" system to distribute malware into organizations that could then be used to capture sensitive information from targeted systems. "Even when Telegram is not installed or being used, the system allows hackers to send malicious...

Novel Email-Based Campaign Targets Bloomberg Clients with RATs

A new email-based campaign by an emerging threat actor aims to spread various remote access trojans RATs to a very specific group of targets who use Bloomberg’s industry-based services. Cisco Talos Intelligence researchers discovered the campaign, dubbing it and its perpetrator “Fajan,” and...

Lazarus APT Hackers are now using BMP images to hide RAT malware

A spear-phishing attack operated by a North Korean threat actor targeting its southern counterpart has been found to conceal its malicious code within a bitmap .BMP image file to drop a remote access trojan RAT capable of stealing sensitive information. Attributing the attack to the Lazarus Group...

Lazarus APT conceals malicious code within BMP image to drop its RAT

This blog was authored by Hossein Jazi Lazarus APT is one of the most sophisticated North Korean Threat Actors that has been active since at least 2009. This actor is known to target the U.S., South Korea, Japan and several other countries. In one of their most recent campaigns Lazarus used a...

Backdoor.Win32.Zombam.h Buffer Overflow

Discovery / credits: Malvuln - malvuln.com c 2021 Original source: https://malvuln.com/advisory/55feab480a43727c8a08feb7344afb4a.txt Contact: [email protected] Media: twitter.com/malvuln Threat: Backdoor.Win32.Zombam.h Vulnerability: Remote Stack Buffer Overflow Description: Zombam.h HTTP RAT...

100,000 Google Sites Used to Install SolarMarker RAT

Hackers are using search-engine optimization SEO tactics to lure business users to more than 100,000 malicious Google sites that seem legitimate, but instead install a remote access trojan RAT, used to gain a foothold on a network and later infect systems with ransomware, credential-stealers,...