Russian Hackers Target Ukrainian Organizations Using Stealthy Living-Off-the-Land Tactics

Organizations in Ukraine have been targeted by threat actors of Russian origin with an aim to siphon sensitive data and maintain persistent access to compromised networks. The activity, according to a new report from the Symantec and Carbon Black Threat Hunter Team, targeted a large business...

Talos Takes 126: Year in Review - Threat Landscape Edition

Were back with another year in review focused episode. This time the focus will be the threat landscape generally and Ill be joined by threat researcher Caitlin Huey. In this episode well discuss what we found in the last year, with a focus on the general threat landscape. Well spend time...

Quarterly Report: Incident Response Trends in Q3 2022

Ransomware and pre-ransomware engagements make up 40 percent of threats seen this quarter By Caitlin Huey. For the first time since compiling these reports, Cisco Talos Incident Response saw an equal number of ransomware and pre-ransomware engagements, making up nearly 40 percent of threats this...

Kegtap, Singlemalt, Winekey Malware Serve Up Ransomware to Hospitals

The boozy names might sound like the kind of thing conjured up in a frat-house common room, but malware families Kegtap, Singlemalt and Winekey are being used to gain initial network access in potentially lethal ransomware attacks on healthcare organizations in the midst of a global pandemic,...

Fileless Malware Tops Critical Endpoint Threats for 1H 2020

In the first half of 2020, the most common critical-severity cybersecurity threat to endpoints was fileless malware, according to a recent analysis of telemetry data from Cisco. Fileless threats consist of malicious code that runs in memory after initial infection, instead of files being stored o...

WastedLocker Goes "Big-Game Hunting" in 2020

By Ben Baker, Edmund Brumaghin, JJ Cummings and Arnaud Zobec. Threat summary After initially compromising corporate networks, the attacker behind WastedLocker performs privilege escalation and lateral movement prior to activating ransomware and demanding ransom payment.The use of "dual-use" tools...