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Dynamic malware analysis is a key part of any threat investigation. It involves executing a sample of a malicious program in the isolated environment of a malware sandbox to monitor its behavior and gather actionable indicators. Effective analysis must be fast, in-depth, and precise. These five tools will help you achieve it with ease. 1. Interactivity Having the ability to interact with the malware and the system in real-time is a great advantage when it comes to dynamic analysis. This way, you can not only observe its execution but also see how it responds to your inputs and triggers specific behaviors.  Plus, it saves time by allowing you to download samples hosted on file-sharing websites or open those packed inside an archive, which is a common way to deliver payloads to victims. The initial phishing email containing the malicious pdf and password for the archive Check out this sandbox session in the ANY.RUN sandbox that shows how interactivity is used for analyzing th...

A North Korea-linked cyber-espionage group has been observed leveraging job-themed phishing lures to target prospective victims in energy and aerospace verticals and infect them with a previously undocumented backdoor dubbed MISTPEN. The activity cluster is being tracked by Google-owned Mandiant under the moniker UNC2970 , which it said overlaps with a threat group known as TEMP.Hermit , which is also broadly called Lazarus Group or Diamond Sleet (formerly Zinc). The threat actor has a history of targeting government, defense, telecommunications, and financial institutions worldwide since at least 2013 to collect strategic intelligence that furthers North Korean interests. It's affiliated with the Reconnaissance General Bureau (RGB). The threat intelligence firm said it has observed UNC2970 singling out various entities located in the U.S., the U.K., the Netherlands, Cyprus, Sweden, Germany, Singapore, Hong Kong, and Australia. "UNC2970 targets victims under the guise o...

Everyone has cybersecurity stories involving family members. Here's a relatively common one. The conversation usually goes something like this:  "The strangest thing happened to my streaming account. I got locked out of my account, so I had to change my password. When I logged back in, all my shows were gone. Everything was in Spanish and there were all these Spanish shows I've never seen before. Isn't that weird?" This is an example of an account takeover attack on a customer account. Typically what happens is that a streaming account is compromised, probably due to a weak and reused password, and access is resold as part of a common digital black market product, often advertised as something like "LIFETIME STREAMING SERVICE ACCOUNT - $4 USD." In the grand scheme of things, this is a relatively mild inconvenience for most customers. You can reset your credentials with a much stronger password, call your bank to issue a new credit card and be back to binge-watching The Crown i...

Cybersecurity researchers have uncovered a never-before-seen dropper that serves as a conduit to launch next-stage malware with the ultimate goal of infecting Windows systems with information stealers and loaders. "This memory-only dropper decrypts and executes a PowerShell-based downloader," Google-owned Mandiant said . "This PowerShell-based downloader is being tracked as PEAKLIGHT." Some of the malware strains distributed using this technique are Lumma Stealer , Hijack Loader (aka DOILoader, IDAT Loader, or SHADOWLADDER), and CryptBot , all of which are advertised under the malware-as-a-service (SaaS) model. The starting point of the attack chain is a Windows shortcut (LNK) file that's downloaded via drive-by download techniques -- e.g., when users look up a movie on search engines. It's worth pointing out that the LNK files are distributed within ZIP archives that are disguised as pirated movies. The LNK file connects to a content delivery network...

Cybersecurity researchers have detailed widespread phishing campaigns targeting small and medium-sized businesses (SMBs) in Poland during May 2024 that led to the deployment of several malware families like Agent Tesla , Formbook , and Remcos RAT . Some of the other regions targeted by the campaigns include Italy and Romania, according to cybersecurity firm ESET. "Attackers used previously compromised email accounts and company servers, not only to spread malicious emails but also to host malware and collect stolen data," ESET researcher Jakub Kaloč said in a report published today. These campaigns, spread across nine waves, are notable for the use of a malware loader called DBatLoader (aka ModiLoader and NatsoLoader) to deliver the final payloads. This, the Slovakian cybersecurity company said, marks a departure from previous attacks observed in the second half of 2023 that leveraged a cryptors-as-a-service (CaaS) dubbed AceCryptor to propagate Remcos RAT (aka Resc...

Learn about critical threats that can impact your organization and the bad actors behind them from Cybersixgill's threat experts. Each story shines a light on underground activities, the threat actors involved, and why you should care, along with what you can do to mitigate risk.  Cybersecurity professionals are facing unprecedented challenges as they strive to manage increasing workloads amidst limited budgets, inadequate staffing, and growing attack surfaces. Research indicates that a majority of these professionals find their jobs more difficult than ever, and a significant number are contemplating leaving their current positions due to the stress and demands of the role. The value of cyber threat intelligence (CTI) in anticipating and mitigating potential attacks is widely recognized. However, security teams face several challenges in effectively utilizing CTI insights, which can turn a powerful cyber defense weapon into an additional burden that security professionals must ...

Cybersecurity researchers have uncovered a new evasive malware loader named SquidLoader that spreads via phishing campaigns targeting Chinese organizations. AT&T LevelBlue Labs, which first observed the malware in late April 2024, said it incorporates features that are designed to thwart static and dynamic analysis and ultimately evade detection. Attack chains leverage phishing emails that come with attachments that masquerade as Microsoft Word documents, but, in reality, are binaries that pave the way for the execution of the malware, which is then used to fetch second-stage shellcode payloads from a remote server, including Cobalt Strike. "These loaders feature heavy evasion and decoy mechanisms which help them remain undetected while also hindering analysis," security researcher Fernando Dominguez said . "The shellcode that is delivered is also loaded in the same loader process, likely to avoid writing the payload to disk and thus risk being detected." ...

Details have emerged about a new critical security flaw impacting PHP that could be exploited to achieve remote code execution under certain circumstances. The vulnerability, tracked as CVE-2024-4577 , has been described as a CGI argument injection vulnerability affecting all versions of PHP installed on the Windows operating system. According to DEVCORE security researchers, the shortcoming makes it possible to bypass protections put in place for another security flaw, CVE-2012-1823 . "While implementing PHP, the team did not notice the Best-Fit feature of encoding conversion within the Windows operating system," security researcher Orange Tsai said . "This oversight allows unauthenticated attackers to bypass the previous protection of CVE-2012-1823 by specific character sequences. Arbitrary code can be executed on remote PHP servers through the argument injection attack." Following responsible disclosure on May 7, 2024, a fix for the vulnerability has bee...

Threat actors are evolving, yet Cyber Threat Intelligence (CTI) remains confined to each isolated point solution. Organizations require a holistic analysis across external data, inbound and outbound threats and network activity. This will enable evaluating the true state of cybersecurity in the enterprise. Cato's Cyber Threat Research Lab (Cato CTRL, see more details below) has recently released its first SASE threat report , offering a comprehensive view of and insights into enterprise and network threats. This is based on Cato's capabilities to analyze networks extensively and granularly (see report sources below).  About the Report The SASE Threat Report covers threats across a strategic, tactical and operational standpoint, utilizing the MITRE ATT&CK framework. It includes malicious and suspicious activities, as well as the applications, protocols and tools running on the networks. The report is based on: Granular data on every traffic flow from every endpoint commu...

Medieval castles stood as impregnable fortresses for centuries, thanks to their meticulous design. Fast forward to the digital age, and this medieval wisdom still echoes in cybersecurity. Like castles with strategic layouts to withstand attacks, the Defense-in-Depth strategy is the modern counterpart — a multi-layered approach with strategic redundancy and a blend of passive and active security controls.  However, the evolving cyber threat landscape can challenge even the most fortified defenses. Despite the widespread adoption of the Defense-in-Depth strategy, cyber threats persist. Fortunately, the Defense-in-Depth strategy can be augmented using Breach and Attack Simulation (BAS), an automated tool that assesses and improves every security control in each layer. Defense-in-Depth: False Sense of Security with Layers Also known as multi-layered defense, the defense-in-depth strategy has been widely adopted by organizations since the early 2000s. It's based on the assumption th...

A decryptor for the Tortilla variant of the Babuk ransomware has been  released  by Cisco Talos, allowing victims targeted by the malware to regain access to their files. The cybersecurity firm said the threat intelligence it shared with Dutch law enforcement authorities made it possible to arrest the threat actor behind the operations. The encryption key has also been shared with Avast, which had previously  released a decryptor  for Babuk ransomware after its  source code was leaked  in September 2021. The updated decryptor can be accessed  here  [EXE file]. "A single private key is used for all victims of the Tortilla threat actor," Avast  noted . "This makes the update to the decryptor especially useful, as all victims of the campaign can use it to decrypt their files." The Tortilla campaign was  first disclosed  by Talos in November 2021, with the attacks leveraging  ProxyShell flaws in Microsoft Exchange servers ...

Ransomware attacks  have become a significant and pervasive threat in the ever-evolving realm of cybersecurity. Among the various iterations of ransomware, one trend that has gained prominence is Ransomware-as-a-Service (RaaS). This alarming development has transformed the cybercrime landscape, enabling individuals with limited technical expertise to carry out devastating attacks. Traditional and double extortion ransomware attacks Traditionally, ransomware refers to a type of malware that encrypts the victim's files, effectively blocking access to data and applications until a ransom is paid to the attacker. However, more contemporary attackers often employ an additional strategy. The bad actors create copies of the compromised data and leverage the threat of publishing sensitive information online unless their demands for ransom are met. This dual approach adds an extra layer of complexity and potential harm to the victims. A new model for ransomware RaaS is the latest busin...

The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday added three security flaws to its Known Exploited Vulnerabilities ( KEV ) catalog based on evidence of active exploitation in the wild. The  vulnerabilities  are as follows - CVE-2023-36584  (CVSS score: 5.4) - Microsoft Windows Mark-of-the-Web (MotW) Security Feature Bypass Vulnerability CVE-2023-1671  (CVSS score: 9.8) - Sophos Web Appliance Command Injection Vulnerability CVE-2020-2551  (CVSS score: 9.8) - Oracle Fusion Middleware Unspecified Vulnerability CVE-2023-1671 relates to a critical  pre-auth command injection vulnerability  that allows for the execution of arbitrary code. CVE-2020-2551 is a  flaw  in the WLS Core Components that allows an unauthenticated attacker with network access to compromise the WebLogic Server. There are currently no public reports documenting in-the-wild attacks leveraging CVE-2023-1671, but Cybernews disclosed in July ...