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TeslaCrypt Ransomware (.micro / help_recover_instructions+<Random>.html/.png/.txt)

  • Distribution Method : Unknown
 
  • MD5 : 1ef9f919a103a9e1d653ddfa9ca43769
 
  • Major Detection Name : Win-Trojan/Teslacrypt.Gen (AhnLab V3), Ransom.TeslaCrypt (Norton)
 
  • Encrypted File Pattern : .micro
 
  • Malicious File Creation Location :
     - C:\Users\%UserName%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\help_recover_instructions+<Random>.html
     - C:\Users\%UserName%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\help_recover_instructions+<Random>.png
     - C:\Users\%UserName%\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\help_recover_instructions+<Random>.txt
     - C:\Users\%UserName%\AppData\Roaming\<Random>.exe
     - C:\Users\%UserName%\Desktop\help_recover_instructions.HTM
     - C:\Users\%UserName%\Desktop\help_recover_instructions.png
     - C:\Users\%UserName%\Desktop\help_recover_instructions.TXT
     - C:\Users\%UserName%\Documents\recover_file_<Random>.txt
 
  • Payment Instruction File : help_recover_instructions.HTM / help_recover_instructions.png / help_recover_instructions.TXT / help_recover_instructions+<Random>.html / help_recover_instructions+<Random>.png / help_recover_instructions+<Random>.txt
 
  • Major Characteristics :
     - Offline Encryption
     - Disable and Blocks Command Prompt (cmd.exe) and Task Manager (Taskmgr.exe)
     - Disable system restore (bcdedit.exe /set {current} bootems off, bcdedit.exe /set {current} advancedoptions off, bcdedit.exe /set {current} optionsedit off, vssadmin.exe delete shadows /all /Quiet, bcdedit.exe /set {current} bootstatuspolicy IgnoreAllFailures, bcdedit.exe /set {current} recoveryenabled off)

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