Ransom.Mespinoza
ThreatDown is now the name of the Malwarebytes line of business products. References to Malwarebytes below reflect the amazing technology used to first identify the threat.
Short bio
PYSA is short for Protect – Your – Systems – Amigo
Type of infection
Ransom.Mespinoza is ransomware. Ransomware in general makes files on the victims system unusable until the ransom is payed. Ransom.Mespinoza is believed to be spread using RDP brute force attacks. Once a network is breached it uses tools like mimikatz and psexec for lateral movement.
Malicious behavior
Victims will find the ransom note called Readme.README
Protection
Malwarebytes protects business and home users from Ransom.Mespinoza by using Anti-Ransomware technology and real-time protection.
Home remediation
You can use the Malwarebytes Anti-Malware Nebula console to scan endpoints.
Nebula endpoint tasks menu
Choose the Scan + Quarantine option. Afterwards you can check the Detections page to see which threats were found.
On the Quarantine page you can see which threats were quarantined and restore them if necessary.
All component/technology detections are passed to the remediation engine for complete removal from infected systems. This industry leading technology uses patented techniques in identifying all cohorts or associated files for a single threat and removes them all together to prevent malware from resuscitating itself. If you are using Malwarebytes Ransomware Rollback technology, it allows you to wind back the clock to negate the impact of ransomware by leveraging just-in-time backups.