ryuk

General

Target

0cf36731f5b8651d53fc651607c3fccac24b631c08dca4493d8e07d2fbff1db3.zip
Size

66KB
Sample

230317-na737sfh85
MD5

cb3303dd1a4616b0b63e352aa1b15b8b
SHA1

6958ee2a38f70ab36cc7178d019d85ffc90761e1
SHA256

c37587ff49bdaa6f13cddab42cc9799b21ef27265c7cf60fdca97e68fbb1a542
SHA512

ad2b13045a1f51e2b67a30f6ff520da3a5615019b37ad7bb17c1287e70102df78983ddd660eb54ce7cc034b656a913aca2eabbc05e03802453a178bc49be0966
SSDEEP

1536:cPdYiEO1nNiO68xVNlJ5zkufsA4YKjKxoqFF0QwzTpFzpm:clYx0NiOhwVnYBUtLzpm

Score

10^/10

ryuk ransomware

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\RyukReadMe.txt

Family

ryuk

Ransom Note

Your network has been penetrated. All files on each network host have been encrypted with a strong algorithm. Backups were encrypted too. Shadow copies also removed, so F8 or any other methods may damage encrypted data but not recover. Only we have exclusive decryption software, suitable for your situation. More than a year ago, world experts recognized the impossibility of such encryption deciphering by any means except the original decoder. No decryption software is available in the public. Antivirus companies, researchers, IT specialists, and any other persons cannot help you to decipher the data. Decryption takes from ten minutes up to several hours. It is performed automatically and doesn't require from you any actions except decoder launching. DO NOT RESET OR SHUTDOWN SYSTEM � files may be damaged. DO NOT DELETE readme files. To confirm our honest intentions. Send 2 different random files and you will get them back decrypted. It can be from different computers on your network to be sure that one key decrypts everything. We will unlock 2 files for free. To get info (decrypt your files) contact us a [email protected] or [email protected] You will receive btc address for payment in the reply letter Ryuk No system is safe

Emails

[email protected]

Targets

- Target
  
  0cf36731f5b8651d53fc651607c3fccac24b631c08dca4493d8e07d2fbff1db3.zip
- Size
  
  66KB
- MD5
  
  cb3303dd1a4616b0b63e352aa1b15b8b
- SHA1
  
  6958ee2a38f70ab36cc7178d019d85ffc90761e1
- SHA256
  
  c37587ff49bdaa6f13cddab42cc9799b21ef27265c7cf60fdca97e68fbb1a542
- SHA512
  
  ad2b13045a1f51e2b67a30f6ff520da3a5615019b37ad7bb17c1287e70102df78983ddd660eb54ce7cc034b656a913aca2eabbc05e03802453a178bc49be0966
- SSDEEP
  
  1536:cPdYiEO1nNiO68xVNlJ5zkufsA4YKjKxoqFF0QwzTpFzpm:clYx0NiOhwVnYBUtLzpm
Score

1^/10
behavioral1 behavioral2
- Target
  
  0cf36731f5b8651d53fc651607c3fccac24b631c08dca4493d8e07d2fbff1db3.exe
- Size
  
  167KB
- MD5
  
  2209710b3ba686e5cbd8716df05c5174
- SHA1
  
  31675cb6cd22911f1e343b046f7b27219e55dadc
- SHA256
  
  0cf36731f5b8651d53fc651607c3fccac24b631c08dca4493d8e07d2fbff1db3
- SHA512
  
  0abfe5bc5fc7ce050658fb007361994d7df53844c1bbb7f176ee06de1f5fda8d87a93f46800ac33092763d181dd97fa89a987b350d9aa372550b67ca10413e27
- SSDEEP
  
  3072:yzWPZc7KwohIG/Qe1F7VIP60hiEOX3Sli:0WumVhIGoe/Aq
Score

10^/10

ryuk ransomware
- Ryuk
  Ransomware distributed via existing botnets, often Trickbot or Emotet.
  ransomware ryuk
- Modifies extensions of user files
  Ransomware generally changes the extension on encrypted files.
  ransomware
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Drops startup file
- Drops desktop.ini file(s)
behavioral3 behavioral4