General

  • Target

    2025-03-19_f269b093efda6d6e17722e22ab039dc0_mailto

  • Size

    65KB

  • Sample

    250319-jma7saxqw8

  • MD5

    f269b093efda6d6e17722e22ab039dc0

  • SHA1

    9a286a1b46cde97a52bd08c38c0c3dbe0d1c618a

  • SHA256

    134998ecb0f44bf191d9202fa7ed77b15b0ae4572300faed7b0be97f37699036

  • SHA512

    79d4a03bbb08a35450fcc46a89cbfd331ac0e0409fbbee12634ecb99c4e323ba7ebc7cce3a0ff4a9b4e45e272886ea455d4b02832eafff3654daf4891e6d6c78

  • SSDEEP

    1536:kxZab6DtoaWM7pgUJJooLrIZadXRM0CFU6PuZhw:3GDtDD7prbooLrWaPM0RZG

Malware Config

Extracted

Path

C:\ProgramData\Package Cache\{57a73df6-4ba9-4c1d-bbbb-517289ff6c13}\25810B-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .25810b -- 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. -- Our encryption algorithms are very strong and your files are very well protected, 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 decrypter program, you may damage them and then they will be impossible to recover. For us this is just business and to prove to you our seriousness, we will decrypt you one file for free. Just open our website, upload the encrypted file and get the decrypted file for free. Additionally, you must know that your sensitive data has been stolen by our analyst experts and if you choose to no cooperate with us, you are exposing yourself to huge penalties with lawsuits and government if we both don't find an agreement. We have seen it before; cases with multi million costs in fines and lawsuits, not to mention the company reputation and losing clients trust and the medias calling non-stop for answers. Come chat with us and you could be surprised on how fast we both can find an agreement without getting this incident public. -- Steps to get access on our website: 1.Download and install tor-browser: https://torproject.org/ 2.Open our website: pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion If the website is not available, open another one: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_25810b: UirnA+tR/794Hn+5SRz51f3VWQ60OHFiv5qqFH59UH3Zl1r69T ODd76jjA/84cDNp1kVne8X8/j/4G96uLLZ5FgPpLXduIUsa+ig rNYLgSXm3uQMMkic54ko/4zJy3RxCP5L4dM160vYxpbNHaxOOQ 2KeXvcuC8XEHAIGW8f315rvE7Dt/vlXZY/BQA26Y92v6kzKd5Q DBoz0fr/P0DHEojKqfJQ2ahB77KdgdljA/3y7I5vWqnuWD8W6W eD32ZgbokW0xazBYS51IhII/ialSvejQ2horKScw==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Users\Public\Libraries\9657F4-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .9657f4 -- 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. -- Our encryption algorithms are very strong and your files are very well protected, 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 decrypter program, you may damage them and then they will be impossible to recover. For us this is just business and to prove to you our seriousness, we will decrypt you one file for free. Just open our website, upload the encrypted file and get the decrypted file for free. Additionally, you must know that your sensitive data has been stolen by our analyst experts and if you choose to no cooperate with us, you are exposing yourself to huge penalties with lawsuits and government if we both don't find an agreement. We have seen it before; cases with multi million costs in fines and lawsuits, not to mention the company reputation and losing clients trust and the medias calling non-stop for answers. Come chat with us and you could be surprised on how fast we both can find an agreement without getting this incident public. -- Steps to get access on our website: 1.Download and install tor-browser: https://torproject.org/ 2.Open our website: pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion If the website is not available, open another one: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_9657f4: n023Q26ClRtQO331ttJVNIV53wQAeL9a7hl34apyw7r2bcfbXD PWG7HdgsLRZItqS8zBsexSVKrNJgWg6Nok7j3XkMTMtE56a+ig rAj0V5aAGS3rmdJDjqzf8FEyrs3tIW7YzOyhQqiWdCus9QNvxu xGMW3umjPVHiUwjDOKg7yWKdRdH+2XjpcQwsQfa58Mvbr8phEs f5RYZy7zxVknc6SnaXCcOkEynp7NvTmswSDvxYd4nNrk12ciqw rmLQb6+yNdWds6TNI7ROPb/KD3/55UgcZMzSHJvg==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Targets

    • Target

      2025-03-19_f269b093efda6d6e17722e22ab039dc0_mailto

    • Size

      65KB

    • MD5

      f269b093efda6d6e17722e22ab039dc0

    • SHA1

      9a286a1b46cde97a52bd08c38c0c3dbe0d1c618a

    • SHA256

      134998ecb0f44bf191d9202fa7ed77b15b0ae4572300faed7b0be97f37699036

    • SHA512

      79d4a03bbb08a35450fcc46a89cbfd331ac0e0409fbbee12634ecb99c4e323ba7ebc7cce3a0ff4a9b4e45e272886ea455d4b02832eafff3654daf4891e6d6c78

    • SSDEEP

      1536:kxZab6DtoaWM7pgUJJooLrIZadXRM0CFU6PuZhw:3GDtDD7prbooLrWaPM0RZG

    • Netwalker Ransomware

      Ransomware family with multiple versions. Also known as MailTo.

    • Netwalker family

    • Renames multiple (7453) files with added filename extension

      This suggests ransomware activity of encrypting all the files on the system.

    • Deletes itself

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

MITRE ATT&CK Enterprise v15

Tasks