Cybersecurity researchers have identified an ongoing in-the-wild adversary campaign, which leverages a known RCE vulnerability in Microsoft Office tracked as CVE-2017-0199 exploited by a malicious Excel file used as a lure attachment in phishing emails. The phishing campaign is designed to distribute a new fileless version of the notorious Remcos RAT malware and take full […]
Adversaries employ new Interlock ransomware in recently observed big-game hunting and double-extortion attacks against U.S. and European organizations in multiple industry sectors. Defenders assume with low confidence that Interlock ransomware might be a newly diversified group linked to the Rhysida ransomware affiliates or developers, based on comparable TTPs and encryptor binaries. Detect Interlock Ransomware Ransomware […]
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Security researchers have revealed a stealthy campaign targeting users in Central and Southwestern Europe with an email credential stealer. Dubbed Strela, this evasive malware is deployed via phishing emails, utilizing obfuscated JavaScript and WebDAV to circumvent conventional security measures. Since its emergence two years ago, Strela Stealer has significantly enhanced its malicious capabilities, allowing it […]
The nefarious hacking group UAC-0050, known for its persistent phishing attacks against Ukraine, has been observed massively distributing tax-related spoofed emails with PDF attachments imitating requests from the State Tax Service of Ukraine and exploiting a LITEMANAGER tool to gain unauthorized remote access to the targeted systems. Detect UAC-0050 Phishing Attacks Covered in the CERT-UA#11776 […]
What are IOCs, and what is their role in cybersecurity? In cybersecurity operations, Indicators of Compromise — such as IP addresses, file hashes, domains, and URLs — serve as crucial forensic evidence for identifying malicious activities within the organization’s network. These artifacts are essential to enabling security teams to detect potential cyber threats. To leverage […]
The notorious Russian state-sponsored hacking group known as APT28 or UAC-0001, which has a history of launching targeted phishing attacks on Ukrainian public sector organizations, has resurfaced in the cyber threat landscape. In the latest adversary campaign covered by CERT-UA, attackers weaponize a PowerShell command embedded in the clipboard as an entry point to further conduct offensive […]
Attackers frequently launch high-profile attacks by exploiting RCE vulnerabilities in popular software products. Cybersecurity researchers have recently identified the widespread exploitation of FortiManager instances, with 50+ potentially compromised devices across multiple industry verticals. Defenders disclosed a critical FortiManager API vulnerability, tracked as CVE-2024-47575, that was exploited in zero-day attacks by adversaries to execute arbitrary code […]
Hot on the heels of the “Rogue RDP” attacks exploiting the phishing attack vector and targeting Ukrainian state bodies and military units, CERT-UA researchers uncovered another wave of phishing attacks leveraging emails with invoice-related subject lures and weaponizing HOMESTEEL malware for file theft. The UAC-0218 group is believed to be behind the ongoing adversary operation. […]
Adversaries frequently exploit remote management tools in their offensive campaigns, like the Remote Utilities software, which has been leveraged in cyber attacks against Ukraine, including those linked to the nefarious UAC-0050 actors. CERT-UA has issued a new alert warning defenders about an ongoing phishing email campaign against government agencies and defense sector organizations, with malicious […]