- Distribution Method : Unknown
- MD5 : cf6ff9e0403b8d89e42ae54701026c1f
- Major Detection Name : Ransom:MSIL/FileCoder.AD!MTB (Microsoft), Ransom.MSIL.ONYX.THEOBBB (Trend Micro)
- Encrypted File Pattern : .ampkcz
- Malicious File Creation Location :
- C:\Users\%UserName%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\readme.txt
- C:\Users\%UserName%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\svchost.url
- C:\Users\%UserName%\AppData\Roaming\readme.txt
- C:\Users\%UserName%\AppData\Roaming\svchost.exe
- <Drive Letter>:\amp.exe
- Payment Instruction File : readme.txt
- Major Characteristics :
- Offline Encryption
- BiggyLocker / Chaos / Penta / Yashma Ransomware series
- Disable system restore (vssadmin delete shadows /all /quiet, wmic shadowcopy delete, bcdedit /set {default} bootstatuspolicy ignoreallfailures, bcdedit /set {default} recoveryenabled no, wbadmin delete catalog -quiet)
- Propagation using "<Drive Letter>:\amp.exe" file.
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