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Check out our video library AppCheck defending against newest ransomware, automatic recovery and real-time backup.
- Distribution Method : Unknown
- MD5 : a4b0a2f9dda5466070c3ec176fc5a390
- Major Detection Name : Trojan.Ransom.BigBosshorse (ALYac), a variant of Win32/Filecoder.Outsider.C (ESET)
- Encrypted File Pattern : .heronpiston
- Malicious File Creation Location : C:\Users\%UserName%\AppData\Roaming\_uninstalling_.png
- Payment Instruction File : #Decryption#.txt
- Major Characteristics :
- Offline Encryption
- Outsider Ransomware series
- Turns off Windows Firewall (netsh advfirewall set allprofiles state off)
- Block processes execution (agntsvc.exe, dbsnmp.exe, msftesql.exe, oracle.exe, sqlagent.exe, synctime.exe etc.)
- Disable system restore (vssadmin.exe delete shadows /all /quiet, bcdedit /set {current} bootstatuspolicy ignoreallfailures, bcdedit /set {current} recoveryenabled no)
- Changes desktop background (C:\Users\%UserName%\AppData\Local\Temp\<Random>.tmp.jpg)