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Experts Uncover DarkCasino: New Emerging APT Threat Exploiting WinRAR Flaw

Experts Uncover DarkCasino: New Emerging APT Threat Exploiting WinRAR Flaw

Nov 16, 2023 Advanced Persistent Threat / Zero-Day
A hacking group that leveraged a recently disclosed security flaw in the WinRAR software as a zero-day has now been categorized as an entirely new advanced persistent threat (APT). Cybersecurity company NSFOCUS has described  DarkCasino  as an "economically motivated" actor that first came to light in 2021. "DarkCasino is an APT threat actor with strong technical and learning ability, who is good at integrating various popular APT attack technologies into its attack process," the company  said  in an analysis. "Attacks launched by the APT group DarkCasino are very frequent, demonstrating a strong desire to steal online property." DarkCasino was most recently linked to the zero-day exploitation of  CVE-2023-38831  (CVSS score: 7.8), a security flaw that can be weaponized to launch malicious payloads. In August 2023, Group-IB disclosed real-world attacks weaponizing the vulnerability and aimed at online trading forums at least since April 2023 to deli
DarkGate Malware Spreading via Messaging Services Posing as PDF Files

DarkGate Malware Spreading via Messaging Services Posing as PDF Files

Oct 13, 2023 Malware / Cyber Threat
A piece of malware known as  DarkGate  has been observed being spread via instant messaging platforms such as Skype and Microsoft Teams. In these attacks, the messaging apps are used to deliver a Visual Basic for Applications ( VBA ) loader script that masquerades as a PDF document, which, when opened, triggers the download and execution of an AutoIt script designed to launch the malware. "It's unclear how the originating accounts of the instant messaging applications were compromised, however it is hypothesized to be either through leaked credentials available through underground forums or the previous compromise of the parent organization," Trend Micro  said  in a new analysis published Thursday. DarkGate, first documented by Fortinet in November 2018, is a  commodity malware  that incorporates a wide range of features to harvest sensitive data from web browsers, conduct cryptocurrency mining, and allow its operators to remotely control the infected hosts. It also
How Nation-State Actors Target Your Business: New Research Exposes Major SaaS Vulnerabilities

How Nation-State Actors Target Your Business: New Research Exposes Major SaaS Vulnerabilities

Feb 15, 2024SaaS Security / Risk Management
With many of the highly publicized 2023 cyber attacks revolving around one or more SaaS applications, SaaS has become a cause for genuine concern in many boardroom discussions. More so than ever, considering that GenAI applications are, in fact, SaaS applications. Wing Security (Wing), a SaaS security company, conducted an analysis of 493 SaaS-using companies in Q4 of 2023.  Their study reveals  how companies use SaaS today, and the wide variety of threats that result from that usage. This unique analysis provides rare and important insights into the breadth and depth of SaaS-related risks, but also provides practical tips to mitigate them and ensure SaaS can be widely used without compromising security posture.  The TL;DR Version Of SaaS Security 2023 brought some now infamous examples of malicious players leveraging or directly targeting SaaS, including the North Korean group UNC4899, 0ktapus ransomware group, and Russian Midnight Blizzard APT, which targeted well-known organizat
New Financial Malware 'JanelaRAT' Targets Latin American Users

New Financial Malware 'JanelaRAT' Targets Latin American Users

Aug 14, 2023 Malware / Cyber Threat
Users in Latin America (LATAM) are the target of a financial malware called  JanelaRAT  that's capable of capturing sensitive information from compromised Microsoft Windows systems. "JanelaRAT mainly targets financial and cryptocurrency data from LATAM bank and financial institutions," Zscaler ThreatLabz researchers Gaetano Pellegrino and Sudeep Singh  said , adding it "abuses DLL side-loading techniques from legitimate sources (like VMWare and Microsoft) to evade endpoint detection." The exact starting point of the infection chain is unclear, but the cybersecurity company, which discovered the campaign in June 2023, said the unknown vector is used to deliver a ZIP archive file containing a Visual Basic Script. The VBScript is engineered to fetch a second ZIP archive from the attackers' server as well as drop a batch file used to establish persistence of the malware. The ZIP archive is packed with two components, the JanelaRAT payload and a legitimate
cyber security

Are You Vulnerable to Third-Party Breaches Through Interconnected SaaS Apps?

websiteWing SecuritySaaS Security / Risk Management
Protect against cascading risks by identifying and mitigating app2app and third-party SaaS vulnerabilities.
APT Hackers Turn to Malicious Excel Add-ins as Initial Intrusion Vector

APT Hackers Turn to Malicious Excel Add-ins as Initial Intrusion Vector

Dec 28, 2022 Malware / Windows Security
Microsoft's decision to block Visual Basic for Applications (VBA) macros by default for Office files downloaded from the internet has led many threat actors to improvise their attack chains in recent months. Now according to Cisco Talos , advanced persistent threat (APT) actors and commodity malware families alike are increasingly using Excel add-in (.XLL) files as an initial intrusion vector. Weaponized Office documents delivered via spear-phishing emails and other social engineering attacks have remained one of the widely used entry points for criminal groups looking to execute malicious code. These documents traditionally prompt the victims to enable macros to view seemingly innocuous content, only to activate the execution of malware stealthily in the background. To counter this misuse, the Windows maker enacted a crucial change starting in July 2022 that blocks macros in Office files attached to email messages, effectively severing a crucial attack vector. While this
Russian State Hackers Continue to Attack Ukrainian Entities with Infostealer Malware

Russian State Hackers Continue to Attack Ukrainian Entities with Infostealer Malware

Aug 16, 2022
Russian state-sponsored actors are continuing to strike Ukrainian entities with information-stealing malware as part of what's suspected to be an espionage operation. Symantec, a division of Broadcom Software,  attributed  the malicious campaign to a threat actor tracked  Shuckworm , also known as  Actinium ,  Armageddon , Gamaredon, Primitive Bear, and Trident Ursa. The findings have been  corroborated  by the Computer Emergency Response Team of Ukraine (CERT-UA). The threat actor, active since at least 2013, is known for explicitly singling out public and private entities in Ukraine. The attacks have since ratcheted up in the wake of Russia's military invasion in late 2022. The latest set of attacks are said to have commenced on July 15, 2022, and ongoing as recently as August 8, with the infection chains leveraging phishing emails disguised as newsletters and combat orders, ultimately leading to the deployment of a PowerShell stealer malware dubbed  GammaLoad.PS1_v2 .
Microsoft Resumes Blocking Office VBA Macros by Default After 'Temporary Pause'

Microsoft Resumes Blocking Office VBA Macros by Default After 'Temporary Pause'

Jul 22, 2022
Microsoft has officially resumed blocking Visual Basic for Applications (VBA) macros by default across Office apps, weeks after temporarily announcing plans to roll back the change. "Based on our review of customer feedback, we've made updates to both our  end user  and our  IT admin  documentation to make clearer what options you have for different scenarios," the company  said  in an update on July 20. Earlier this February, Microsoft publicized its plans to disable macros by default in Office applications such as Access, Excel, PowerPoint, Visio, and Word as a way to prevent threat actors from abusing the feature to deliver malware. It's a known fact that a majority of the damaging cyberattacks today leverage email-based phishing lures to spread bogus documents containing malicious macros as a primary vector for initial access. "Macros can add a lot of functionality to Office, but they are often used by people with bad intentions to distribute malware to
Malware behind Microsoft Excel-based Sudoku generator

Malware behind Microsoft Excel-based Sudoku generator

Dec 20, 2012
Sudoku is one such game that I believe will benefit your brain, but now not for your system. Peter Szabo from SophosLabs have identified a piece of malware that resides behind a Microsoft Excel-based Sudoku generator. The Malware developed in Visual Basic requires macros, a scripting language that allows users to create equations based on values in different columns and rows. Microsoft disable macros by default , because in past macros were the weapon of choice for cyber criminals . But in order for the generator to work, the user must activate macros. Unfortunately, while the user is enjoying the Sudoku, the macro is installing malware in the targeted machine. Keyboard and mouse macros allow sequences of keystrokes and mouse actions to be transformed into shorter commands and also it can easily gathers system information by using the ipconfig, systeminfo like commands. Once the bug has collected a machine's IP address, running processes, installed applications
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