Japan Computer Emergency Response Team (JPCERT/CC) has published guidance on early identification of ransomware attacks in the system using Windows Event Logs. Probably by reviewing these logs, firms would identify some signs or clues of an existing ransomware attack and find themselves in a position to forestall this threat from spreading across the network.
JPCERT/CC stresses that the discovery of ransomware as early in the attack as possible is extremely important. Many ransomware variants leave apparent traces in Windows Event Logs, and that particular knowledge might be useful for cybersecurity teams to discover and finally stop attacks before they spread further. It’s a strategy especially valuable in identifying the type of attack and tracing how ransomware might have entered the system.
Types of Event Logs to Monitor
The agency recommends checking four main types of Windows Event Logs, namely: Application, Security, System, and Setup logs. These types can carry some very important clues left by ransomware along with how it came into the environment and what systems are under attack.
Identifiable Ransomware Signatures in Event Logs
This JPCERT/CC report includes several specific log entries associated with certain ransomware families, which indicate that this was an active attack.
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