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oneday SSH bruteforce

ByDetecteam

TLP

TLP CLEAR

Author

David Deflache

Summary

In this attack scenario, an individual with the IP address 192.168.0.42 and a valid username is engaging in an authentication brute force attack through SSH. Their target is a system with the IP address 192.168.0.111, using the default SSH port 22. The attacker executes a loop of 350 iterations, simulating numerous login attempts. Each attempt is marked as a failed login, triggering the action “User.LoginFailed.” A random delay between 3 to 5 minutes is introduced after each failed attempt. After the loop, there is a final pause of 3 minutes. The attacker then achieves a successful login, triggering the action “User.LoginSuccess.” This scenario illustrates an unauthorized access attempt through repeated SSH login trials. Can you detect it ?

DATA

openssh.log_Download

TIMELINE

CATEGORY

Malware

references

MITRE ATT&CK

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