8 casos · pág. 1/1
ESET reports that UAC-0099 (aka Earth Sirrush) gained initial access to a Ukrainian logistics company on July 16, 2025, through a spear-phishing email with a malicious attachment. The group then handed access to Sandworm, which carried out a data-wiping attack on September 17, 2025, more than two months after the initial foothold. UAC-009…
ESET reports that Russia-linked actors used the decentralized Yggdrasil mesh network to hide command-and-control traffic during an attack on a Ukrainian grain logistics company in July 2025. ESET says this is the first documented use of the technology by a state-linked group. The intrusion began with a phishing email sent in a campaign ag…
ESET Research reports that the China-aligned APT group FamousSparrow has been using a new modular C++ backdoor, SparroWocky, since at least August 2025. The backdoor has replaced SparrowDoor as the group's main implant. From mid-2025 into 2026, about 90% of the group's targets in ESET telemetry were in Latin America, mostly governmental e…
ESET documents an intrusion at a Ukrainian grain logistics company in which UAC-0099 gained initial access on July 16th, 2025 via a spearphishing email with a malicious attachment, then handed access off to Sandworm. Sandworm carried out a data-wiping attack on September 17th, 2025. A day after initial access, the attackers deployed Mythi…
Attackers took over more than 300 Tor exit relays in early October 2026 and changed their exit policies so SSH (TCP port 22) traffic was redirected to 12 attacker-controlled interception servers that harvested passwords and attempted to install the Ebury 1.8.3 backdoor. Researcher kaba found 333 redirecting exits (roughly 10% of about 3,0…
Kaspersky GReAT identified an APT campaign in early 2026 targeting diplomatic agencies in Tajikistan, Uzbekistan and Turkmenistan. The attackers used a UEFI bootkit dubbed BlackX, which closely resembles BlackLotus (advertised on underground forums for $5,000 in October 2022 and confirmed by ESET in March 2023, per gbhackers.com) and bypa…
ESET documented the evolution of MATCHBOIL, a custom C downloader used by the Russia-aligned cyberespionage group UAC-0099. Samples span April 2024 to April 2026, although CERT-UA first documented the malware in August 2025. Each iteration became more sophisticated, with new obfuscation, sandbox checks and persistence methods. All victims…
Kaspersky's analysis of Operation FlashHole describes a Lazarus Group (North Korea-linked) cyberespionage campaign against South Korean organizations. It follows Operation SyncHole, which abused the related Cross EX product and hit at least six organizations (gbhackers.com), and is placed within the broader Cascade Hole activity. The earl…
