Russia-Linked Hackers Used New Mesh Network Backdoor in Destructive Ukraine Attack

The Russian state-sponsored hacking group Sandworm teamed up with another threat actor to carry out a destructive wiping attack targeting a Ukrainian logistics company last year. According to ESET, the attack involved UAC-0099 aka Earth Sirrush obtaining initial access to the target on July 16,...

Russia-Aligned UAC-0099 Plants Nuclear Weapon Prompt in Malware to Disrupt AI Analysis

Cybersecurity researchers have disclosed a new technique dubbed GuardBreaker that's been put to use by a Russia-aligned threat actor known as UAC-0099 against a target in Ukraine with an aim to interfere with artificial intelligence AI-assisted analysis. The idea, ESET said in a series of posts o...

CERT-UA Warns of HTA-Delivered C# Malware Attacks Using Court Summons Lures

The Computer Emergency Response Team of Ukraine CERT-UA has warned of cyber attacks carried out by a threat actor called UAC-0099 targeting government agencies, the defense forces, and enterprises of the defense-industrial complex in the country. The attacks, which leverage phishing emails as an...

CERT-UA Warns of HTA-Delivered C# Malware Attacks Using Court Summons Lures

The Computer Emergency Response Team of Ukraine CERT-UA has warned of cyber attacks carried out by a threat actor called UAC-0099 targeting government agencies, the defense forces, and enterprises of the defense-industrial complex in the country. The attacks, which leverage phishing emails as an...