ryuk

General

Target

gigantic-western
Size

143KB
Sample

210427-btfm5eccye
MD5

b77cc8a1ede23a80a4a4c9d0a8b40735
SHA1

254c97abab837687c779b57c7ef1bec4c1e2351a
SHA256

4bb0d8eb6b93060941730c65ac5c11625b805f91616841cdfb887d8461aef581
SHA512

f94546161808210ada027d03465f88336de4f2d24581801566f7ff17a9641b389c43946a98275ed637759a0205b8d09f9028d26bb75ab44e3f7038c5b4667ffd

Score

10^/10

Malware Config

Extracted

Path

C:\RyukReadMe.txt

Family

ryuk

Ransom Note

Your network has been penetrated. All files on each host in the network have been encrypted with a strong algorithm. Backups were either encrypted or deleted or backup disks were formatted. Shadow copies also removed, so F8 or any other methods may damage encrypted data but not recover. We exclusively have decryption software for your situation No decryption software is available in the public. DO NOT RESET OR SHUTDOWN - files may be damaged. DO NOT RENAME OR MOVE the encrypted and readme files. DO NOT DELETE readme files. This may lead to the impossibility of recovery of the certain files. To get info (decrypt your files) contact us at [email protected] or [email protected] BTC wallet: 14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk Ryuk No system is safe

Emails

[email protected]

Wallets

14hVKm7Ft2rxDBFTNkkRC3kGstMGp2A4hk

Targets

- Target
  
  gigantic-western
- Size
  
  143KB
- MD5
  
  b77cc8a1ede23a80a4a4c9d0a8b40735
- SHA1
  
  254c97abab837687c779b57c7ef1bec4c1e2351a
- SHA256
  
  4bb0d8eb6b93060941730c65ac5c11625b805f91616841cdfb887d8461aef581
- SHA512
  
  f94546161808210ada027d03465f88336de4f2d24581801566f7ff17a9641b389c43946a98275ed637759a0205b8d09f9028d26bb75ab44e3f7038c5b4667ffd
Score

10^/10

ryuk persistence ransomware spyware stealer
- Ryuk
  Ransomware distributed via existing botnets, often Trickbot or Emotet.
  ransomware ryuk
- Deletes shadow copies
  Ransomware often targets backup files to inhibit system recovery.
  ransomware
- Modifies extensions of user files
  Ransomware generally changes the extension on encrypted files.
  ransomware
- Reads user/profile data of web browsers
  Infostealers often target stored browser data, which can include saved credentials etc.
  spyware stealer
- Adds Run key to start application
  persistence
- Enumerates connected drives
  Attempts to read the root path of hard drives other than the default C: drive.
behavioral1