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 […]
At the end of summer, 2024, the FBI, Department of Defense, and CISA issued a joint advisory warning cybersecurity experts of a rise in operations by Iran-affiliated adversaries known as Pioneer Kitten. The U.S. cybersecurity authoring agencies in collaboration with international partners have recently issued another advisory AA24-290A covering the increasing activity of Iranian threat […]
Hard on the heels of a new wave of cyber-attacks by UAC-0050 involving cyber espionage and financial thefts and relying on a diverse number of tools, including MEDUZASTEALER, another suspicious activity comes to the spotlight in the Ukrainian cyber threat arena. CERT-UA recently launched a new alert covering spoofed phishing attacks spreading MEDUZASTEALER via Telegram […]
In the face of increasingly sophisticated cyber threats, security service providers such as MSSPs and MDRs strive to enhance threat detection capabilities while scaling their businesses. Managing detection rules across multiple security solutions in the environments of current and potential clients poses a significant challenge to service providers as they must align their service capabilities […]
The UAC-0050 hacking collective notorious for its long-standing offensive operations against Ukraine steps back into the cyber threat arena. CERT-UA researchers have long been investigating the group’s activity, which primarily focuses on three key directions, including cyber espionage and financial theft, along with information and psychological operations tracked under the “Fire Cells Group” brand. Financially […]
Amid a spike in cyber-espionage efforts by North Korean APT groups targeting Southeast Asia under the SHROUDED#SLEEP campaign, cybersecurity experts are raising alarms about a parallel wave of attacks orchestrated by Iran-affiliated hackers. This newly discovered campaign focuses on spying on organizations across the UAE and Gulf regions. Known as Earth Simnavaz APT (also referred […]