ryuk

General

Target

ryuk.bin.zip
Size

191KB
Sample

231125-dnk6gsgb66
MD5

1ae3a85e87db3236be5c53bb008d003c
SHA1

a70b536231420d6ba14438e0d10288c69a4d99bb
SHA256

db670caff58f0802a99720ba76d29940eb62174bb3a884cd9a14432666eab7bf
SHA512

07fa3d2b806e8527fef2425722bdfc24eebee05eb6a29527bc69d4e61a24cb7eba52992bb2b5b08f56dbf96207ba3e408cc281eef6dce0e71f5e2b7f14a581a4
SSDEEP

3072:6AuC7+Vz0orbiQgckgG9hPlc2jTdgwsUGdweOTBj9FOq+QN37jxl8LYJjhx/x:6q7y06NSO6+wsUGdhOTBjiqTjxmm9x5

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
  
  ryuk.bin
- Size
  
  384KB
- MD5
  
  5ac0f050f93f86e69026faea1fbb4450
- SHA1
  
  9709774fde9ec740ad6fed8ed79903296ca9d571
- SHA256
  
  23f8aa94ffb3c08a62735fe7fee5799880a8f322ce1d55ec49a13a3f85312db2
- SHA512
  
  b554487c4e26a85ec5179cdcc1d25b5bc494e8821a8899fbbf868c3cf41f70cc72db107613b3f6655d3ab70f4db94cce2589066bb354b1ed955098d3911b844d
- SSDEEP
  
  6144:f5yaXtrA/WSo1rl3ALrlHQpn0BwK3SBDmhYfFQC:fTX6WSofcZ+KCIGD
Score

10^/10

ryuk persistence ransomware
- Ryuk
  Ransomware distributed via existing botnets, often Trickbot or Emotet.
  ransomware ryuk
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Deletes itself
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
  persistence
behavioral1 behavioral2