ryuk

General

Target

23f8aa94ffb3c08a62735fe7fee5799880a8f322ce1d55ec49a13a3f85312db2.zip
Size

191KB
Sample

240721-se4c2awdnp
MD5

95cd7ac6c12144dd7e3abb879344465e
SHA1

bd414274654229b6e94339673187630b9e8ff987
SHA256

d992871dd45a6302916f809eb54639a656c9e619451c10a03704735c424be0d9
SHA512

80be6b61ab6a390e6248a965875aee682af06fbc05383fbd17d81872dd6f335fa6f9acff2b5fc996bb27c3b5e985660c941954e21249ffe68d2daa8c71641e64
SSDEEP

3072:4B4UA79CJyI52vw2AmSXBbCp+s89xPoI0f3uB+MFnSQINX1wCgCbwoEYqEmUukgu:+A8UIAR8/+eBRFSjQsEYdmUukgA+/Y6m

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
  
  23f8aa94ffb3c08a62735fe7fee5799880a8f322ce1d55ec49a13a3f85312db2
- 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
- Drops startup file
- Executes dropped EXE
- Loads dropped DLL
- Adds Run key to start application
  persistence
behavioral1 behavioral2