ryuk

General

Target

220820-lvt1zacfb6_pw_infected.zip
Size

202KB
Sample

250128-xv2xcsymbv
MD5

01407028887c827054fab5317399510d
SHA1

3e1fefe17db9f6a456f8e04a33dfbe68128c0a47
SHA256

53c35aeb28a485550cc4f4f3224b45ee0e57837ea3ad7cbe7a7a5029ae2468ec
SHA512

1cd02176d8cb62a32c3d9a74c184ceceb6ffbfb2afcbc698698885c23196e1d1d2db6164bb39fa1da9c025315a212e05b50bee69699992965937371b9ebcbf99
SSDEEP

3072:K6UmB8bcTs3Qt4YT2u84uV/rOG2I2CTbH4PeVBmy6p4FSId5VVTU+hv9AFXw:7Us8Ise/P8tqGv2cb5bO6bVaEvCXw

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

10^/10

ryuk defense_evasion discovery execution impact persistence ransomware spyware stealer
- Ryuk
  Ransomware distributed via existing botnets, often Trickbot or Emotet.
  ransomware ryuk
- Ryuk family
  ryuk
- Deletes shadow copies
  Ransomware often targets backup files to inhibit system recovery.
  ransomware defense_evasion impact execution
- 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
- 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 behavioral2