netwalker | 4fb90e7f4baa933ad69be3abb36dbb586dc86e6162d7ac70a504a0c8942ea798

General

Target

2024-04-23_efeb1be8bd41130cd7c545010d140afa_babuk_mailto
Size

94KB
Sample

240423-a91lhsad87
MD5

efeb1be8bd41130cd7c545010d140afa
SHA1

a056845be51604a73cac17479f04d9077c202e05
SHA256

4fb90e7f4baa933ad69be3abb36dbb586dc86e6162d7ac70a504a0c8942ea798
SHA512

291c73ba102104a365c6769b8b29451a3594b06fbe65fe0a8f45d613981bb4ded5e23331ec65148c0a67a90de8fd0cc2c8379909bd2916f1f72cb2ddc68f934a
SSDEEP

1536:NQVlCPQRhNs3POdM0ty2XGe0W7Pbk3sPkO5M/Y8fGMNvgaNg:NQ3CPAC/YM0tyAGe0WDPx9MNvg8g

Score

10^/10

Malware Config

Extracted

Path

C:\Program Files (x86)\Adobe\Acrobat Reader DC\3E4D0-Readme.txt

Family

netwalker

Ransom Note

Hi! Your files are encrypted. All encrypted files for this computer has extension: .3e4d0 -- If for some reason you read this text before the encryption ended, this can be understood by the fact that the computer slows down, and your heart rate has increased due to the ability to turn it off, then we recommend that you move away from the computer and accept that you have been compromised, rebooting/shutdown will cause you to lose files without the possibility of recovery and even god will not be able to help you, it could be files on the network belonging to other users, sure you want to take that responsibility? -- Our encryption algorithms are very strong and your files are very well protected, you can't hope to recover them without our help. The only way to get your files back is to cooperate with us and get the decrypter program. Do not try to recover your files without a decrypt program, you may damage them and then they will be impossible to recover. We advise you to contact us as soon as possible, otherwise there is a possibility that your files will never be returned. For us this is just business and to prove to you our seriousness, we will decrypt you some files for free, but we will not wait for your letter for a long time, mail can be abused, we are moving on, hurry up with the decision. Contact us: [email protected] [email protected] Don't forget to include your code in the email: {code_1b1ea859_3e4d0: l1o9mo7HVgkq0A2p5TVJ8Ouee3DccU4kFq4YAnpZayNoL9wA2Q z0Y69n4f0Fxi8JFDfLDiPwXJ/ELA82oijkS7xfr0VMqnUiWage GyK7n6LDMt/baxdHCQg+g6kS8BHTx6sxfdhfdCzbW2TKQSU74s WenXiAxVVfTSBUkobJAdirhhyGziixxfLT56hw5YKSeJX9Q79v /fvFrUMKGbSVQRcF81aoqZsiKyCsP8Ml4pLft1vUrkRDn5lOh1 chucNH1BS4fStYlc2iFJYu7REbu5ANM1g=}

Emails

[email protected]

Targets

- Target
  
  2024-04-23_efeb1be8bd41130cd7c545010d140afa_babuk_mailto
- Size
  
  94KB
- MD5
  
  efeb1be8bd41130cd7c545010d140afa
- SHA1
  
  a056845be51604a73cac17479f04d9077c202e05
- SHA256
  
  4fb90e7f4baa933ad69be3abb36dbb586dc86e6162d7ac70a504a0c8942ea798
- SHA512
  
  291c73ba102104a365c6769b8b29451a3594b06fbe65fe0a8f45d613981bb4ded5e23331ec65148c0a67a90de8fd0cc2c8379909bd2916f1f72cb2ddc68f934a
- SSDEEP
  
  1536:NQVlCPQRhNs3POdM0ty2XGe0W7Pbk3sPkO5M/Y8fGMNvgaNg:NQ3CPAC/YM0tyAGe0WDPx9MNvg8g
Score

10^/10

netwalker persistence ransomware
- Detected Netwalker Ransomware
  Detected unpacked Netwalker executable.
- Netwalker Ransomware
  Ransomware family with multiple versions. Also known as MailTo.
  ransomware netwalker
- Deletes shadow copies
  Ransomware often targets backup files to inhibit system recovery.
  ransomware
- Renames multiple (566) files with added filename extension
  This suggests ransomware activity of encrypting all the files on the system.
  ransomware
- Deletes itself
- Adds Run key to start application
  persistence
- Suspicious use of SetThreadContext
behavioral1 behavioral2