Morphisec Threat Labs recently discovered multiple indicators of attacks leading to threat actor, UAC-0184. This discovery sheds light on the notorious IDAT loader delivering the Remcos Remote Access Trojan (RAT) to a Ukrainian entity based in Finland. …
Tag: EXFILTRATION
On February 19, 2024, ConnectWise released a security patch addressing two vulnerabilities in the ScreenConnect software, potentially leading to Remote Code Execution (RCE). These vulnerabilities, identified as CVE-2024-1709 and CVE-2024-1708, allow attackers to bypass authentication and perform path traversal, respectively, enabling unauthorized access and administrative privilege escalation.…
DarkVNC is a hidden utility based on the Virtual Network Computing (VNC) technology, initially promoted on an Exploit forum in 2016. The primary distinction between hVNC and VNC lies in their intended usage and the degree of transparency: VNC can serve as a legitimate tool for remote desktop sharing, while hVNC is associated with stealthy or potentially malicious activities, often operating without the user’s knowledge or consent.…
DCSO CyTec Blog
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14 min read ·Feb 21, 2024
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Earlier this year, DCSO observed an intriguing malware sample first uploaded to VirusTotal in mid-January 2024 that we believe to be part of North Korea-linked activity targeting the Russian Ministry of Foreign Affairs.…
Quasar is a legitimate remote administration tool that has become popular among threat actors due to its range of capabilities and availability in open source. This blog details how Darktrace detected this tool without using signatures and how Darktrace RESPOND can be configured to block its malicious usage.…
SonicWall Capture Labs Threat Research Team became aware of the ClamAV VirusEvent command injection vulnerability (CVE-2024-20328), assessed its impact, and developed mitigation measures for the vulnerability.
ClamAV is a notable, open-source anti-virus engine, widely recognized for its comprehensive suite of security solutions. It offers an array of features, including web and email scanning capabilities, endpoint security, a multi-threaded daemon, command line scanning tools, and an automatic database update service.…
Turla is an APT group allegedly linked to the intelligence service FSB (Federal Security Service) from the Russian Federation. This threat actor is specifically in the Center 16 unit, which carries out the collection of radio-electronic intelligence on communications facilities. Moreover, the Center 16 is in charge of intercepting, decrypting and processing the electronic message and the technical operation of compromising foreign targets.…
Table of contentsIntroduction
Read More Scattered Spider (aka UNC3944, Scatter Swine, Muddled Libra, Octo Tempest, Oktapus, StarFraud) is a lucrative intrusion set active since at least May 2022, primarily engaged in social engineering, ransomware, extortion campaigns and other advanced techniques.
The intrusion set employs state-of-the-art techniques, particularly related to social engineering, such as impersonation of IT personnel to deceive employees for targeted phishing, SIM swapping, leverage of MFA fatigue, and contact with victims’ support teams.…
Cisco Talos, in cooperation with CERT.NGO, has discovered new malicious components used by the Turla APT. New findings from Talos illustrate the inner workings of the command and control (C2) scripts deployed on the compromised WordPress servers utilized in the compromise we previously disclosed.
Talos also illustrates the post-compromise activity carried out by the operators of the TinyTurla-NG (TTNG) backdoor to issue commands to the infected endpoints.…
Read More Just weeks after Trustwave SpiderLabs reported on the Greatness phishing-as-a-service (PaaS) framework, SpiderLabs’ Email Security team is tracking another PaaS called Tycoon Group.
The team found Tycoon Group during a regular investigation into a phishing incident, and its distinctive method of communication to its phishing server convinced the team to further explore this active PaaS operation.…
Originating in the latter part of 2023, this Ransomware-as-a-Service (RaaS) operation has drawn attention due to its technical lineage and operational tactics resembling those of the notorious Hive ransomware group. With law enforcement agencies previously disrupting Hive, Hunters International’s rise just after the operation underscores the persistent and adaptive nature of cybercriminal networks.…
Today’s attackers are taking advantage of changing business dynamics to target people everywhere they work. Staying current on the latest cybersecurity attack vectors and threats is an essential part of securing the enterprise against breaches and compromised data.…
Executive SummaryIn December 2023, S2W’s threat intelligence center(a.k.a. Talon) discovered and continuously tracked the Rust-based macOS malware named RustDoor (a reference to the name given by BitDefender) disguised as a VisualStudio update.Through further analysis, we identified the Windows version of RustDoor, which we named GateDoor because it was written in Golang rather than Rust.…
Read More By Pham Duy Phuc, Max Kersten in collaboration with Noël Keijzer and Michaël Schrijver from Northwave · February 14, 2024
Ransom gangs make big bucks by extorting victims, which sadly isn’t new. Their lucrative business allows them not only to live off the stolen money, but also to reinvest into their shady practice.…
Cisco Talos has identified a new backdoor authored and operated by the Turla APT group, a Russian cyber espionage threat group. This new backdoor we’re calling “TinyTurla-NG” (TTNG) is similar to Turla’s previously disclosed implant, TinyTurla, in coding style and functionality implementation.
Talos assesses with high confidence that TinyTurla-NG, just like TinyTurla, is a small “last chance” backdoor that is left behind to be used when all other unauthorized access/backdoor mechanisms have failed or been detected on the infected systems.…
Read More DarkGate is a commodity loader written in Borland Delphi that was first identified in 2018 and has been advertised under the Malware-as-a-Service (MaaS) business model on popular cybercrime forums since June 2023.
It has a wide range of capabilities, such as the ability to download and execute files in memory, environment reconnaissance and information gathering, privilege escalation, remote access software deployment, and a Hidden Virtual Network Computing (HVNC) module.…
Threat actors of advanced capability seek to compromise network edge devices such as Ivanti systems to establish advanced footholds, from which to perform targeted reconnaissance identifying organizations with data of high value. Three vulnerabilities recently announced in Ivanti systems underscore the importance of layered security for internet-exposed systems.…
In late 2023, a new and distinct ransomware group named 3AM Ransomware emerged. It came to the forefront as a fallback for other ransomware, notably during failed deployments of the infamous LockBit ransomware and later their interesting choice in their website.
First reported by Symantec, the discovery and emergence of 3AM Ransomware marked a notable and interesting event in the cybercrime world.…
The APT group Water Hydra has been exploiting the Microsoft Defender SmartScreen vulnerability (CVE-2024-21412) in its campaigns targeting financial market traders. This vulnerability, which has now been patched by Microsoft, was discovered and disclosed by the Trend Micro Zero Day Initiative.
The Trend Micro Zero Day Initiative discovered the vulnerability CVE-2024-21412 which we track as ZDI-CAN-23100, and alerted Microsoft of a Microsoft Defender SmartScreen bypass used as part of a sophisticated zero-day attack chain by the advanced persistent threat (APT) group we track as Water Hydra (aka DarkCasino) that targeted financial market traders.…
Executive Summary
Read More EclecticIQ analysts observed that cybercriminals increased the delivery of the DarkGate loader following the FBI’s takedown of Qakbot infrastructure in August 2023 [1]. EclecticIQ analysts assess with high confidence that financially motivated threat actors, including groups like TA577 and Ducktail, along with Ransomware-as-a-Service (RaaS) organizations such as BianLian and Black Basta, primarily use DarkGate.…