CERT-UA researchers notify defenders of the persistent malicious campaign impacting more than 11 telecom providers. The UAC-0165 group behind these destructive attacks has been targeting the Ukrainian telecom sector for a period of over 5 months aiming to cripple the critical infrastructure, which fuels the need for thorough research among defenders to preempt potential threats. […]
Over a month ago, defenders warned the peer community of CVE-2023-4634, a critical WordPress vulnerability actively exploited in the wild and impacting an overwhelming number of WordPress sites across the globe. Following that campaign, another malicious operation comes to the forefront. A fresh surge in the long-lasting Balada Injector malware campaign has already impacted over […]
In early October 2023, the UAC-0006 group was observed behind a series of at least four cyber attacks targeting Ukraine, as CERT-UA researchers report. Attackers applied a similar adversary toolkit as in previous campaigns, leveraging SmokeLoader in the latest phishing operation. SmokeLoader Delivery: UAC-0006 Attack Analysis On October 6, 2023, CERT-UA released four alerts notifying […]
Atlassian has recently notified defenders of a critical privilege escalation vulnerability in its Confluence software. The uncovered issue identified as CVE-2023-22515 poses severe risks to impacted Confluence installations as it is actively weaponized by attackers. Detect CVE-2023-22515 Exploits With the ever-increasing numbers of CVEs leveraged in real-world attacks, proactive detection of vulnerability exploitation remains one […]
Proactive ransomware detection remains one of the top priorities for defenders, marked by a rise in intrusion complexity and continuously increasing high-profile ransomware attacks. FBI and CISA notify defenders of the growing volumes of cyber attacks spreading Snatch ransomware. Snatch ransomware operators have been in the limelight in the cyber threat landscape for about five […]
The new Microsoft Windows Themes security bug tracked as CVE-2023-38146, which enables attackers to perform RCE, emerges in the cyber threat arena. The proof-of-concept (PoC) exploit for this vulnerability, also known as “ThemeBleed,” has recently been released on GitHub, posing a threat to potentially infected Windows instances and arresting the attention of defenders. CVE-2023-38146 Detection […]
The financial sector, the keystone of the global economy, has become increasingly digitized in recent years. While this transformation brings efficiency and convenience, it also exposes financial institutions to many cybersecurity challenges. Threat actors, ranging from sophisticated hacker groups to opportunistic individuals, are constantly targeting the financial sector, seeking to exploit vulnerabilities for financial gain. […]
At the turn of fall 2023, the russia-backed APT28 hacking group reemerges in the cyber threat arena, targeting the critical infrastructure of Ukrainian organizations in the power industry sector. CERT-UA has recently released a security notice covering a phishing attack from a fake sender email address containing a link to a malicious archive. Following this […]
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 researchers have observed a new malicious campaign targeting Ministries of Foreign Affairs of NATO-related countries. Adversaries distribute PDF documents used as lures and masquerading the sender as the German embassy. One of the PDF files contains Duke malware attributed to the nefarious russian nation-backed hacking collective tracked as APT29 aka NOBELIUM, Cozy Bear, or […]