- Distribution Method : Unknown
- MD5 : e90b933f72ce5882c907a9cce13be1d2
- Major Detection Name : a variant of Win32/Kryptik.GGZS (ESET), Trojan-Ransom.Win32.Purga.ml (Kaspersky)
- Encrypted File Pattern : <Random Filename>.osk
- Malicious File Creation Location :
- C:\Users\%UserName%\AppData\Roaming\osk.exe
- C:\Users\%UserName%\HOW TO RECOVER ENCRYPTED FILES.TXT
- Payment Instruction File : HOW TO RECOVER ENCRYPTED FILES.TXT
- Major Characteristics :
- Offline Encryption
- Amnesia / Scarabey Ransomware series
- Disable and Blocks Registry Editor (regedit.exe) and Task Manager (Taskmgr.exe)
- Block processes execution (isqlplussvc.exe, msaccess.exe, msftesql.exe, mydesktopqos.exe, mysqld-nt.exe, mysqld-opt.exe etc.)
- Checks following folder name for encryption: Adobe, Firebird, Microsoft, Microsoft SQL Server, Microsoft SQL Server Compact Edition, MSSQL.1, Oracle
- Disable system restore (wbadmin DELETE SYSTEMSTATEBACKUP -keepVersions:0, wmic SHADOWCOPY DELETE, vssadmin Delete Shadows /All /Quiet, bcdedit /set {default} recoveryenabled No, bcdedit /set {default} bootstatuspolicy ignoreallfailures)
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