- Distribution Method : Unknown
- MD5 : 7905e07d83e158d505a5bf443b332cf0
- Major Detection Name : Generic.Ransom.MedusaLocker.C9F3AC08 (BitDefender), Trojan-Ransom.Win32.Medusa.j (Kaspersky)
- Encrypted File Pattern : .locker16
- Malicious File Creation Location :
- C:\Users\%UserName%\AppData\Roaming\svchostt.exe
- C:\Windows\System32\Tasks\svchostt
- Payment Instruction File : INFORMATION.html
- Major Characteristics :
- Offline Encryption
- Turns off User Access Control (UAC)
- Block processes execution (360se.exe, axlbridge.exe, Defwatch.exe, MsDtSrvr.exe, RAgui.exe, sqlservr.exe etc.)
- Disable system restore (vssadmin.exe Delete Shadows /All /Quiet, bcdedit.exe /set {default} recoveryenabled No, bcdedit.exe /set {default} bootstatuspolicy ignoreallfailures, wbadmin DELETE SYSTEMSTATEBACKUP, wbadmin DELETE SYSTEMSTATEBACKUP -deleteOldest, wmic.exe SHADOWCOPY /nointeractive)
- Adds svchostt to scheduler to execute "%AppData%\svchostt.exe" Every 15 minutes
- EFI System Partition (X:\) and Recovery Partition (Y:\) drives are activate.
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