The UAC-0057 hacking collective, aka GhostWriter, reemerges in the cyber threat arena by abusing a WinRAR zero-day tracked as CVE-2023-38831 that has been exploited in the wild since April through August 2023. The successful exploitation of CVE-2023-38831 enables attackers to infect the targeted systems with a PicassoLoader variant and Cobalt Strike Beacon malware. Notably, both […]
Cybersecurity experts observe significantly growing volumes of malicious activity aimed at targeting Ukrainian public and private sectors, with offensive forces frequently relying on the phishing attack vector to proceed with the intrusion. CERT-UA notifies cyber defenders of the ongoing malicious campaign against judicial bodies and notaries in Ukraine, massively distributing emails with the lure subjects […]
Cyber defenders observe growing volumes of cyber attacks against Ukraine and its allies launched by the russian offensive forces, with the aggressor frequently leveraging the phishing attack vector and the public sector serving as the primary target. CERT-UA notifies cyber defenders of the ongoing phishing campaign against Ukrainian state bodies massively distributing emails with the […]
UAC-0006 hacking collective is on the rise, actively targeting Ukrainian organizations with SmokeLoader malware in a long-lasting campaign aimed at financial profits. The latest CERT-UA cybersecurity alert details that the hacking group has launched a third massive cyber-attack in a row, severely threatening the banking systems across the country. Analyzing UAC-0006 Phishing Campaign Aimed at […]
Since at least 2022, the hacking collective tracked as UAC-0024 has been launching a series of offensive operations targeting Ukraine’s defense forces. The group’s cyber-espionage activity mainly focuses on intelligence gathering leveraging CAPIBAR malware. Based on attacker TTPs along with the uncovered use of another malware dubbed Kazuar, the adversary activity can be linked to […]
Since russia’s full-fledged invasion of Ukraine, the aggressor’s offensive forces have launched thousands of targeted cyber attacks against Ukraine. One of the most persistent threats belongs to the infamous cyber-espionage gang tracked as UAC-0010 (Armageddon). This article provides an overview of the group’s adversary activity against Ukraine largely exploiting the phishing attack vector as of […]
Heads up! Cyber defenders are notified of a new wave of phishing attacks leveraging the invoice-relate email subjects with the infection chain triggered by opening a malicious VBS file, which leads to spreading SmokeLoader malware on the affected devices. According to the investigation, the malicious activity can be attributed to the financially-motivated UAC-0006 hacking gang […]
Cybersecurity researchers issue a heads-up covering a new targeted cyber attack by the UAC-0057 group against Ukrainian public officials leveraging XLS files that contain a malicious macro spreading PicassoLoader malware. The malicious loader is capable of dropping another malicious strain dubbed njRAT to spread the infection further. PicassoLoader and njRAT Malware Distribution by UAC-0057 Hackers: […]
CERT-UA researchers recently uncovered a fraudulent copy of the English-language version of the Ukrainian World Congress website at https://www.ukrainianworldcongress.org/. The fake web resource contains a couple of DOCX documents that trigger an infection chain once opened. As a result of the attack chain, hackers can deploy MAGICSPELL payload intended to download, decipher, and maintain the […]
With the ongoing russian cyber offensive operations targeting Ukraine and its allies, the aggressor is continuously launching cyber-espionage campaigns against state bodies and other organizations representing critical infrastructure. Less than a week after CERT-UA researchers warned of a spike in cyber-espionage attacks by russia-linked Shuckworm group, another nefarious hacking group comes back to the scene. […]