Overview

overview

10

Static

static

10

74fd9bbdd8...14.exe

windows10-2004-x64

74fd9bbdd8...14.exe

windows11-ltsc_2024-x64

10

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General

  • Target
    6369718b0b010e0c5a68299467a8da609d62683342ae9ea5ed61662b54e6848b
  • Size 39KB
  • Sample260812-flyd5swtcz
  • SHA256 6369718b0b010e0c5a68299467a8da609d62683342ae9ea5ed61662b54e6848b
  • MD5 SHA1 SHA512 SSDEEP TLSH
Score
10/10
netwalkerdefense_evasiondiscoveryexecutionimpactransomwarespywarestealer

Malware Config

Extracted

Path

  • C:\ProgramData\Microsoft\ClickToRun\66AE47-Readme.txt

  • netwalker

Ransom Note
  • Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .66ae47 -- 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. -- 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_66ae47: be7miU4cN6aIqJfx1l/3jEPAbcmy2dMq2bMTJ5FgmZPzh0e9ja 1jLNg4gAA2NegWWNQcdCS7syBHdvhr69SocH9xLLroCRoihq4K /uYCfrxLaXb2/Q6uGUcdCBx/QUOyn8G+4+600W2ofWDj70zzSK 3MyxIUp9b6M9L7nF3zXHtyiETY6Oowo8ogaMFPlztysQLOm5g7 Ue5QJTiaBSlrx2AuLS+pUxKU6prkXTsFFShQZJ1JZbNQ7ymKch /KHDCvr0/7D6C05cP4a5ufCvNLTIJxRiuQgHn0Cg==}
URLs

  • http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

  • http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

  • C:\Program Files (x86)\Adobe\Acrobat Reader DC\5E94E0-Readme.txt

  • netwalker

Ransom Note
  • Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .5e94e0 -- 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. -- 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_5e94e0: PKNVk3WzLUbLrqWvyIboWuDtTrY0qhSRv0H+LqeBZYsGm8iQy2 1jfJDcoUkLshoucV75DQRzqGbzc/ZgcJiD6EkC2bMfchkzhq4K /sW3FtoQRKE9h3QbaZD5U9vz+yClbVYGb08TqK9OkWxbfhlSM6 OGCdIq+Sn19vgX7zWceRpUUxc03YbeNZRsrB5ynEMGu7GHx5NC 6bst97Rq9K8TfZ7KUtDHd1P1Sojl5jsHOAiZNgFwz5HHP0TzeR KijkF/fAgbljbkbDhw5rkC7hw+/bgAhhfMEcoPQA==}
URLs

  • http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

  • http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Targets

    • Target
      74fd9bbdd8a484640e4b0405a1da84734a0a9c2604ac1b0a39fa2e28b0c12614.exe
    • Size 69KB
    • SHA256 74fd9bbdd8a484640e4b0405a1da84734a0a9c2604ac1b0a39fa2e28b0c12614
    • MD5 SHA1 SHA512 SSDEEP TLSH
    Score
    10/10
    defense_evasiondiscoveryexecutionnetwalkerimpactransomwarespywarestealer

    • Family: Netwalker Ransomware

      Ransomware family with multiple versions. Also known as MailTo.

      ransomwarenetwalker

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Renames multiple (7340) files with added filename extension

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

      ransomware

    • Reads user/profile data of web browsers

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

      spywarestealer
    behavioral1behavioral2

MITRE ATT&CK Enterprise v16

Tasks