nefilim

General

Target

bc1b0daa577dc2cc96cc24512d13267773d0b6c8ce0e768db41aa0ec00f128eb
Size

36KB
Sample

220131-3tyffaeca7
MD5

644b931e6a016a6146ebe8068f68e4cb
SHA1

87e2ad3e9f1ae9e1340fb3c70013fd6b508e2364
SHA256

bc1b0daa577dc2cc96cc24512d13267773d0b6c8ce0e768db41aa0ec00f128eb
SHA512

683152462a60d24dd9151754ebc5184a4753afbfeb4a86f74d5d815ae1d3738631bd8f89c51fe56b31ddc14a590579233a0a1a5562ba49e5486387be3bb989ba

Score

10^/10

Malware Config

Extracted

Path

C:\NEFILIM-DECRYPT.txt

Ransom Note

All of your files have been encrypted with military grade algorithms. We ensure that the only way to retrieve your data is with our software. We will make sure you retrieve your data swiftly and securely when our demands are met. Restoration of your data requires a private key which only we possess. A large amount of your private files have been extracted and is kept in a secure location. If you do not contact us in seven working days of the breach we will start leaking the data. After you contact us we will provide you proof that your files have been extracted. To confirm that our decryption software works email to us 2 files from random computers. You will receive further instructions after you send us the test files. [email protected] [email protected] [email protected]

Emails

[email protected]

Targets

- Target
  
  bc1b0daa577dc2cc96cc24512d13267773d0b6c8ce0e768db41aa0ec00f128eb
- Size
  
  36KB
- MD5
  
  644b931e6a016a6146ebe8068f68e4cb
- SHA1
  
  87e2ad3e9f1ae9e1340fb3c70013fd6b508e2364
- SHA256
  
  bc1b0daa577dc2cc96cc24512d13267773d0b6c8ce0e768db41aa0ec00f128eb
- SHA512
  
  683152462a60d24dd9151754ebc5184a4753afbfeb4a86f74d5d815ae1d3738631bd8f89c51fe56b31ddc14a590579233a0a1a5562ba49e5486387be3bb989ba
Score

10^/10

nefilim ransomware persistence
- Nefilim
  Ransomware first seen in early 2020 which shares code with the Nemty family. Rewritten in Golang in July 2020.
  ransomware nefilim
- Modifies extensions of user files
  Ransomware generally changes the extension on encrypted files.
  ransomware
- Sets service image path in registry
  persistence
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Deletes itself
behavioral1 behavioral2