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A lesser-known ransomware strain called AstraLocker has recently released its second major version, and according to threat analysts, its operators engage in rapid attacks that drop its payload directly from email attachments.This approach is quite unusual as all the intermediate steps that typically characterize email attacks are there to help evade detection and minimize the chances of raising red flags on email security products.According to ReversingLabs, which has been following AstraLocker operations, the adversaries don't seem to care about reconnaissance, evaluation of valuable files, and lateral network movement.Instead, they are performing "smash-n-grab" attacks to his immediately hit with maximum force aiming for a quick payout.
The FBI, the CISA, the Department of the Treasury, and the Financial Crimes Enforcement Network (FinCEN) are releasing this CSA to provide information on MedusaLocker ransomware.Observed as recently as May 2022, MedusaLocker actors predominantly rely on vulnerabilities in Remote Desktop Protocol (RDP) to access victims' networks.
The BRONZE RIVERSIDE threat group is likely responsible for stealing intellectual property from Japanese organizations.The other cluster involves deployment of LockFile, AtomSilo, Rook, Night Sky, and Pandora post-intrusion ransomware.CTU researchers attribute this activity to the Chinese BRONZE STARLIGHT threat group
We at Cymulate believe that when people come together, nothing can stop them.A core goal of the group is to create a global community of diverse professionals who will identify, challenge, and inspire one another through knowledge sharing, networking, ideation, and more.You are encouraged to share your knowledge, ask questions, participate in discussions, and become a key member of this community. I would appreciate hearing from you, answering any questions you have, or getting more involved by emailing me at firstname.lastname@example.org.Take a moment to introduce yourself and let everyone know who you are.
Researchers from Palo Alto Networks defined the PingPull RAT as a "difficult-to-detect" backdoor that leverages the Internet Control Message Protocol (ICMP) for C2 communications.Experts also found PingPull variants that use HTTPS and TCP for C2 communications instead of ICMP.The cyberespionage group has started targeting financial institutions and government entities in Afghanistan, Australia, Belgium, Cambodia, Malaysia, Mozambique, the Philippines, Russia, and Vietnam. Unlike past attacks, the group started using the PingPull RAT.
The Cybersecurity and Infrastructure Security Agency (CISA) and United States Coast Guard Cyber Command (CGCYBER) are releasing this joint Cybersecurity Advisory (CSA) to warn network defenders that cyber threat actors, including state-sponsored advanced persistent threat (APT) actors, have continued to exploit CVE-2021-44228 (Log4Shell) in VMware Horizon and Unified Access Gateway (UAG) servers to obtain initial access to organizations that did not apply available patches or workarounds.
PureCrypter: A Fully-Functional Loader Distributing Remote Access Trojans and Information StealersNews
PureCrypter is a fully-featured loader being widely soldThe malware has been observed distributing a variety of remote access trojans and information stealersThe loader is a .NET executable obfuscated with SmartAssembly and makes use of compression, encryption and obfuscation to evade antivirus software productsPureCrypter features provide persistence, injection and defense mechanisms that are configurable in Google's Protocol Buffer message format.
Recently new information was passed to the CERT-IL team indicating that there is an active phishing campaign against various users in Israel.The phishing campaign starts with a malicious email sent from "Israel Post" which contains a malicious attachment that leads to malware installation on the computer.
Google has updated their GSUITE API and no longer support basic authentication (username + password).It means that clients that has configured GSUITE connection in the agent will no longer be able to connect to it.All clients must generate ‘APP PASSWORD’ and use it instead of their account password.The agent UI is already updated.More details can be found here: Sign in with App Passwords - Gmail Help (google.com) (this link is also in the agent UI) The relevant part is this:
In this series of articles, we will discuss a variety of MITRE ATT&CK techniques for Google Cloud Platform (GCP). The articles will cover techniques such as persistence, privilege escalation, lateral movement, and more. The first technique we will discuss is privilege escalation in GCP through a process called "google-guest-agent". Google Compute Engine Services Google Compute Engine (GCE) has some services that are run by the systemd daemon, including "google-guest-agent.service". This service is responsible for executing the binary "google-guest-agent" at boot. As we can see the agent is child of the init process and is running as root. What is google-guest-agent?‘Google-guest-agent’ is a daemon that is responsible for handling GCE platform features. The guest agent functionality can be separated into various areas of responsibility. Historically, on Linux these were managed by separate independent processes, but today they are all managed by the guest agent.The guest agent handl
In this multi-day intrusion, The DFIR Report observed a threat actor gain initial access to an organization by exploiting a vulnerability in ManageEngine SupportCenter Plus.The threat actor, discovered files on the server and dumped credentials using a web shell, moved laterally to key servers using Plink and RDP and exfiltrated sensitive information using the web shell and RDP.The FBI and CISA published an advisory noting that APT attackers were using CVE-2021-44077 to gain initial access to the networks of organizations of Critical Infrastructure Sectors such as healthcare, financial, electronics and IT consulting industries.
On June 02, 2022, Atlassian released a security advisory for their Confluence Server and Data Center applications, highlighting a critical severity of unauthenticated remote code execution vulnerability.The OGNL injection vulnerability allows an unauthenticated user to execute arbitrary code on a Confluence Server or Data Center instance and is currently being exploited by a specific threat actor. in order to bring value to our customers and help them test and verify their systems are secure against it our research team rushed to release a purple team module for that specific reason.You can find it under the following name: Confluence Pre-Auth Remote Code Execution via OGNL Injection(CVE-2022-26134)The execution expects two input arguments:Hostname : the vulnerable host to checkCommand : the command we would like to run if the host is found to be vulnerable (defaults to whoami which will print the current running username.)
It is crucial to protect yourself from cyber-attacks that can compromise your security posture and cause damage to your organization. With proper configurations and implementations, you can help prevent these cyber-attacks from impacting your organization. For each attack vector, we have compiled the top 3 recommendations for risk mitigation. Email Gateway Block unnecessary attachment file types – allow the minimum that is required for operating your organization. Enable aggressive anti-malware scanning such as advanced AV, Sandbox, or CDR. Enable URL scanning, sandboxing, and rewriting – in email body and attachments. Web Gateway Block downloads or allow the minimum required list of file types that is required for operating your organization. Block browsing categories that are not required for operating your organization. Focus on questionable categories such as “Newly Registered Domains,” “Parked Domains,” and “Uncategorized.” Implement browsing isolation to ensure th
Nao_sec identified an odd looking Word document in the wild, uploaded from an IP address in Belarus.This turned out to be a zero day vulnerability in Office and/or Windows.Defender for Endpoint missed execution.The document uses the Word remote template feature to retrieve a HTML file from a remote webserver, which in turn uses the ms-msdt MSProtocol URI scheme to load some code and execute some PowerShell.
ISO file downloads are advertised via QR codes on Twitter and on supposedly free gaming sites, but they don't contain what they promise.QR codes on Twitter and malvertisingThe loader for the malicious Chrome extension was initially analysed by @x3ph1 who dubbed it ChromeLoader.To avoid misunderstandings with legitimate Chrome components we hereby refer to it as Choziosi loader.The analysis on the loader is detailed but x3ph1 does not describe the Chrome extension Choziosi.Twitter user @th3_protoCOL found QR codes that circulate on Twitter and advertise pirated software to lure people into downloading an ISO.Reddit users also complain about malicious ISO files on websites that provide Steam games.This tweet by @StopMalvertisin says the ISOs are downloaded via malicious advertisements.hxxps://www.gdatasoftware.com/fileadmin/web/general/images/blog/2022/01/chromeloader_twitter2.pnghxxps://www.gdatasoftware.com/fileadmin/_processed_/7/1/chromeloader_reddit_c4998c051d.png
Cybersecurity researchers have disclosed details of the latest version of the Chaos ransomware line, dubbed Yashma.While it's purportedly a .NET version of Ryuk, closer examination of the sample reveals that it doesn't share much with the notorious ransomware. In fact, early versions of Chaos, which is now in its fourth iteration, were more akin to a destructive trojan than to traditional ransomware. Yashma version adds some new capabilities.
Check Point Research (CPR) details a targeted campaign that has been using sanctions-related baits to attack Russian defense institutes, part of the Rostec Corporation.The investigation shows that this campaign is part of a larger Chinese espionage operation that has been ongoing against Russian-related entities for several months.CPR researchers estimate with high confidence that the campaign has been carried out by an experienced and sophisticated Chinese nation-state APT.
PaloAlto Unit42 discovered a malicious HTML help file delivering Agent Tesla.The attack is interesting because attackers are often looking for creative ways to deliver their payloads.Their purpose in doing so is twofold:An attempt to bypass security products.An attempt to bypass security training.Potential victims may have been trained to avoid documents, scripts and executables from unknown senders, but it is important to be careful of almost any filetype.Agent Tesla is well-known malware that has been around for a while.Agent Tesla focuses on stealing sensitive information from a victim's computer and sending that information to the attacker over FTP, SMTP or HTTP.It does this primarily via keystroke logging, screen capturing, camera recording and accessing sensitive data.
A previously undocumented remote access trojan (RAT) written in the Go programming language has been spotted disproportionately targeting entities in Italy, Spain, and the U.K.Called Nerbian RAT by enterprise security firm Proofpoint, the novel malware leverages COVID-19-themed lures to propagate as part of a low volume email-borne phishing campaign.
In this attack analyzed by C25, the Chinese APT used a spear phishing email to deliver a beacon of a Red Team framework known as "Viper".The kill chain includes an artifact that is already known and that was attributed to Naikon one year ago and it is used to load and execute a custom shellcode.The target of this attack is currently unknown but with high probability, given the previous history of the attack perpetrated by the group, it might be a government institution from a South Asian country.
MITRE just published the 11 Strategies for a World-Class Cybersecurity Operations Center book. A recurring theme in this book is the importance of Cyber Threat Intelligence (CTI) as instrumental to “augment the SOC’s ability to identify adversaries and discern their movements from those of authorized users.” The document further states that CTI “moves the SOC from a per-incident approach to an adversary-focused paradigm.”As Cymulate XSPM is designed to provide extensive in-context CTI capabilities and, as such, supports each one of these tactics as briefly broached below.MITRE Strategy 1 - Know what you are protecting and why:XSPM provides a continuously updated situational awareness of the security posture of individual attack vectors, including iteratively observing, orienting, deciding, and acting through:the creation and continuous updater of a composite inventory of all exposed assets through attack surface management, the continuous security posture assessment through production-
As a business executive, understanding how cyber risks can lead to financial losses and more importantly how to reduce risk to an acceptable level is critical. Today we are going to discuss:· How Cybersecurity risk is real risk?· How everyone is a target?· How business driving risk reduction is key for success of cybersecurity programs.· As an executive to know what questions to ask, what to measure and how to mitigate these risks.· A non-technical understanding of how Extended Security Posture Management with offensive testing is used to 1. visualize, explain, and reduce risk. 2. Ensures optimized value for your cybersecurity spend.Dr. Magda Chelly is an award-winning global cybersecurity leader. IFSEC Global has listed her as one of the top 20 most influential cybersecurity personalities globally. After years of experience as Information Security Officer in several multinational organizations, she co-founded a cybersecurity start-up.
Never have applications, most web based, been more critical for success of every business. Yet when looking at enterprises' ability to shore up security here, it has become the weakest link.In Verizon’s 2021 Data Breach Investigations Report, Web Applications were accounted for 89% of credential abuse and over 56% of asset compromises.
Zero Trust has become the framework of choice to reduce risk and ensure optimized cybersecurity. Join Dave Klein, Director and Cyber Evangelist for Cymulate and his guest Chuck Brooks as they discuss. Join this talk to learn: - How to make Zero Trust truly actionable and continuous.- How to optimize risk reduction and outcomes.- The role of offensive testing and purple teaming in Zero Trust.
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