Russian APT Deploys New 'Kapeka' Backdoor in Eastern European Attacks

A previously undocumented "flexible" backdoor called Kapeka has been "sporadically" observed in cyber attacks targeting Eastern Europe, including Estonia and Ukraine, since at least mid-2022. The findings come from Finnish cybersecurity firm WithSecure, which attributed the malware to the Russia-linked advanced persistent threat (APT) group tracked as Sandworm (aka APT44 or

RedCurl Cybercrime Group Abuses Windows PCA Tool for Corporate Espionage

The Russian-speaking cybercrime group called RedCurl is leveraging a legitimate Microsoft Windows component called the Program Compatibility Assistant (PCA) to execute malicious commands. “The Program Compatibility Assistant Service (pcalua.exe) is a Windows service designed to identify and address compatibility issues with older programs,” Trend Micro said in an analysis

Russian Government Software Backdoored to Deploy Konni RAT Malware

An installer for a tool likely used by the Russian Consular Department of the Ministry of Foreign Affairs (MID) has been backdoored to deliver a remote access trojan called Konni RAT (aka UpDog). The findings come from German cybersecurity company DCSO, which linked the activity as originating from the Democratic People's Republic of Korea (DPRK)-nexus actors targeting Russia. The

Russian COLDRIVER Hackers Expand Beyond Phishing with Custom Malware

The Russia-linked threat actor known as COLDRIVER has been observed evolving its tradecraft to go beyond credential harvesting to deliver its first-ever custom malware written in the Rust programming language. Google's Threat Analysis Group (TAG), which shared details of the latest activity, said the attack chains leverage PDFs as decoy documents to trigger the infection sequence. The lures are

Behind the Scenes of Matveev's Ransomware Empire: Tactics and Team

Cybersecurity researchers have shed light on the inner workings of the ransomware operation led by Mikhail Pavlovich Matveev, a Russian national who was indicted by the U.S. government earlier this year for his alleged role in launching thousands of attacks across the world. Matveev, who resides in Saint Petersburg and is known by the aliases Wazawaka, m1x, Boriselcin, Uhodiransomwar,

Russian Cyber Espionage Group Deploys LitterDrifter USB Worm in Targeted Attacks

Russian cyber espionage actors affiliated with the Federal Security Service (FSB) have been observed using a USB propagating worm called LitterDrifter in attacks targeting Ukrainian entities. Check Point, which detailed Gamaredon's (aka Aqua Blizzard, Iron Tilden, Primitive Bear, Shuckworm, and Winterflounder) latest tactics, branded the group as engaging in large-scale campaigns that are

Russian Hackers Linked to 'Largest Ever Cyber Attack' on Danish Critical Infrastructure

Russian threat actors have been possibly linked to what's been described as the "largest cyber attack against Danish critical infrastructure," in which 22 companies associated with the operation of the country's energy sector were targeted in May 2023.  "22 simultaneous, successful cyberattacks against Danish critical infrastructure are not commonplace," Denmark's SektorCERT said [PDF]. "The

CERT-UA Reports: 11 Ukrainian Telecom Providers Hit by Cyberattacks

The Computer Emergency Response Team of Ukraine (CERT-UA) has revealed that threat actors "interfered" with at least 11 telecommunication service providers in the country between May and September 2023. The agency is tracking the activity under the name UAC-0165, stating the intrusions led to service interruptions for customers. The starting point of the attacks is a reconnaissance phase in

Ukrainian Military Targeted in Phishing Campaign Leveraging Drone Manuals

Ukrainian military entities are the target of a phishing campaign that leverages drone manuals as lures to deliver a Go-based open-source post-exploitation toolkit called Merlin. "Since drones or Unmanned Aerial Vehicles (UAVs) have been an integral tool used by the Ukrainian military, malware-laced lure files themed as UAVs service manuals have begun to surface," Securonix researchers Den

Ukraine's CERT Thwarts APT28's Cyberattack on Critical Energy Infrastructure

The Computer Emergency Response Team of Ukraine (CERT-UA) on Tuesday said it thwarted a cyber attack against an unnamed critical energy infrastructure facility in the country. The intrusion, per the agency, started with a phishing email containing a link to a malicious ZIP archive that activates the infection chain. “Visiting the link will download a ZIP archive containing three JPG images (