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                            Threat Labs News Roundup: May 2023

                            Jun 09 2023

                            Summary

                            The purpose of the Netskope Threat Labs News Roundup series is to provide enterprise security teams an actionable brief on the top cybersecurity news from around the world. The brief includes summaries and links to the top news items spanning cloud-enabled threats, malware, and ransomware.

                            Top Stories

                            Security incident on Twitter exposing tweets

                            A security issue on Twitter has publicly exposed private tweets that were sent to Twitter Circle, which is a feature that allows users to share tweets with specific people. Details

                            Operation MEDUSA takes down Snake malware

                            The FBI, in coordination with multiple foreign governments, has disrupted the infrastructure of a malware known as Snake, which is linked to the Federal Security Service of the Russian Federation (FSB). Details

                            New malware used in espionage attacks against governments

                            Researchers uncovered a sophisticated espionage campaign targeting government organizations in Central Asia with a previously unknown malware named DownEx. Details

                            Zero-click vulnerability in Microsoft’s MSHTML

                            Researchers have released details about a now fixed vulnerability in Windows MSHTML (a.k.a. Trident), which is a proprietary browser engine developed by Microsoft. Details

                            Cybersecurity Events in Ukraine

                            Sandworm APT group targeting Ukraine

                            The Russian-linked group known as Sandworm has been linked to attacks on Ukraine state networks aimed to wipe files on Windows and Linux using a batch script and WinRar commands. Details

                            Attack on French Senate website claimed by pro-Russian hackers

                            A Pro-Russian group that calls themselves “NoName” has claimed an attack on the French Senate’s website due to France helping Ukraine amid war. Details

                            Newspaper evading Russian media restriction through popular video game

                            A Finnish newspaper is evading Russian censorship by hiding news inside a map in the popular video game Counter-Strike, showing news and pictures about the Russian-Ukraine war. Details

                            SmokeLoader campaign targeting Ukraine

                            A new phishing campaign that aims to distribute SmokeLoader was found by the Computer Emergency Response Team of Ukraine (CERT-UA), which can be used to deliver other malware onto infected systems. Details

                            Espionage operation targeting Ukraine state bodies

                            The Computer Emergency Response Team of Ukraine (CERT-UA) released details about a cyber espionage campaign targeting Ukraine state bodies, linked to a threat actor tracked as UAC-0063. Details

                            New malware CosmicEnergy able to disrupt electric grids

                            A new Russia-linked malware named CosmicEnergy was discovered by researchers, developed to target industrial control systems (ICS) and disrupt electric grids. Details

                            Cloud-enabled Threats

                            LOBSHOT malware abusing Google Ads

                            A new backdoor and infostealer malware named LOBSHOT was discovered abusing Google Ads to spread itself disguised as legitimate software for remote access, like AnyDesk. Details

                            New infostealer malware abusing Facebook

                            A new infostealer named NodeStealer was found being distributed on Facebook, capable of stealing browser cookies to hijack Facebook, Gmail, and Outlook accounts. Details

                            New malware abusing PyPI through multiple packages

                            Researchers have found several malicious Python packages hosted on PyPI delivering a malware named “KEKW”, able to steal sensitive information, and hijack cryptocurrency transactions. Details

                            Malicious npm packages delivering TurkoRat malware

                            Researchers discovered two malicious packages hosted in the public npm repository delivering TurkoRat, which is an open source remote access trojan commonly used by attackers. Details

                            PyPI temporarily suspends new users and projects

                            The official Python repository PyPI has temporarily suspended the creation of new users and new projects due to the high volume of malware abusing the repository. Details

                            Attackers abusing AWS to mine cryptocurrency

                            An Indonesian threat actor was found abusing Amazon Web Services (AWS) EC2 instances to conduct crypto mining operations for financial gain. Details

                            Lazarus APT group abusing IIS servers

                            A new campaign from the Lazarus APT group has been targeting vulnerable versions of Microsoft IIS servers to deploy malware. Details

                            Legion malware targeting AWS and SSH servers

                            A Python-based malware named Legion was recently updated with new features to compromise SSH servers and Amazon Web Services (AWS) accounts associated with CloudWatch and DynamoDB. Details

                            Ransomware

                            Avos ransomware hijacked university alert system

                            The ransomware group known as Avos has hijacked Bluefield University’s emergency broadcast system to send SMS and emails informing that they hacked the university network. Details

                            New ransomware named Akira

                            A new ransomware operation named Akira has been found breaching corporate networks around the world, having leaked data from at least four victims so far. Details

                            New ransomware named CACTUS

                            A new ransomware strain named CACTUS has been found leveraging vulnerabilities in VPN applications to gain an initial foothold on targeted networks. Details

                            Multiple ransomware groups adopting leaked Babuk code

                            New research shows that at least 10 different ransomware groups have been using the source code of Babuk ransomware, which was leaked in 2021. Details

                            New ransomware named MichaelKors

                            A new ransomware-as-a-service (RaaS) group named MichaelKors is targeting Linux and VMware ESXi systems. Details

                            Russian ransomware affiliate charged by the U.S.

                            The U.S. Justice Department is charging a Russian citizen named Mikhail Pavlovich Matveev (a.k.a. Wazawaka) for association with three ransomware operations that targeted victims in the United States. Details

                            BrianLian ransomware switched to extortion only model

                            A joint cybersecurity advisory confirms that BrianLian ransomware has adjusted its operation to only extort victims based on stolen data, without encryption involved. Details

                            New ransomware operation named MalasLocker

                            A new ransomware operation named MalasLocker has been found targeting Zimbra servers to encrypt files and steal emails, asking victims to donate to charity instead of asking for a ransom payment. Details

                            Cuba ransomware claiming attack on Philadelphia Inquirer

                            The Cuba ransomware group has claimed responsibility over a cyber attack that disrupted the newspaper distribution on the Philadelphia Inquirer. Details

                            New ransomware named Buhti

                            A new ransomware group named Buhti was found using leaked source codes of LockBit and Babuk ransomware to target Windows and Linux systems. Details

                            author image
                            Gustavo Palazolo
                            Gustavo Palazolo is an expert in malware analysis, reverse engineering and security research, working many years in projects related to electronic fraud protection.
                            Gustavo Palazolo is an expert in malware analysis, reverse engineering and security research, working many years in projects related to electronic fraud protection.
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