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Jigsaw Ransomware (.lckd)

  • Distribution Method : Unknown
 
  • MD5 : f7a933ff89aa9cf353b9f303e1820573
 
  • Major Detection Name : a variant of MSIL/Filecoder.Jigsaw.B (ESET), Ransom:MSIL/JigsawLocker.A (Microsoft)
 
  • Encrypted File Pattern : .lckd
 
  • Malicious File Creation Location :
         - C:\Users\%UserName%\AppData\Local\Adobe (x86)\AcroRd32.exe
         - C:\Users\%UserName%\AppData\Roaming\Google (x86)\Chrome32.exe
         - C:\Users\%UserName%\AppData\Roaming\System32Work
         - C:\Users\%UserName%\AppData\Roaming\System32Work\Address.txt
         - C:\Users\%UserName%\AppData\Roaming\System32Work\dr
         - C:\Users\%UserName%\AppData\Roaming\System32Work\EncryptedFileList.txt
 
  • Major Characteristics :
         - Offline Encryption
         - Create a fake "Initialization Exception" message
         - Automatically delete encrypted files every hour

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