General

  • Target

    7bad3bfde268d71c7dfd13c6d62dc607427912e4106cb4247ef26f4c822fab63

  • Size

    35KB

  • Sample

    221101-gq1kqshfbr

  • MD5

    e90699a13fec55e39e444b3f5dfa98ce

  • SHA1

    76283d6c1eea982096fa168b138772094c812474

  • SHA256

    7bad3bfde268d71c7dfd13c6d62dc607427912e4106cb4247ef26f4c822fab63

  • SHA512

    7b721c6b001c9b0c23e86e3f3a53b13cc08985f09b579e7230af695f71feb1f7b6cb348456b24cb102296da84584a8472c39417fc3275566af016ae656e2ed01

  • SSDEEP

    768:18kq7NCuaw+84Q4h99vP8jqgbMidbhvJU9nbcuyD7UI:18kq1aww5EjIidbhhU9nouy8

Malware Config

Extracted

Path

C:\ProgramData\Package Cache\{ef6b00ec-13e1-4c25-9064-b2f383cb8412}\8FA7A9-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .8fa7a9 -- 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_8fa7a9: LO2Cf5eX1XQBbfTEJuj/58JTnJtojLcIWGQY1UhHDDSbA4nxY1 7xVacuOo1BzlPbLkdKE2tJGE4ODkQUtzhQgUFG7sPKfFg2TAuG pO3wOzKcpA4LbYV5HyASBzyy/H3f5Xo9QuGLL/YvvyTUi5KwJg Kx8aa5qAu5rh3jBSIb4zeftKtjsf7a7pLMpExcF5ZjGiXTJNVN TEe7kzC7GIQI+ngFnTf6nGnD1KSBJVk1voytkSi1yUb1epbDe1 bCzQ79NML4rhUkDJRmBcUhe54In2SPPwJfxLlyMA==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Users\Admin\Desktop\76D6E1-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .76d6e1 -- 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_76d6e1: 8NsLVepOAg3CWhQGKwvp8MUIMlpjwxFE4PoVA92FcKqgIbmE/v ljaw6w/Q8cu9ztZS7sFguf1XWZ+ojbhq72L1GwyaE/BPVtTAuG pGXZEtsbQsIjDbPseRXOXNL6rqjQy61OJHuoer/KQofas8FFR6 XY32/LeH1osw8XH1ZusookwLiHTx45m27kymBVAXQyFVg0dwPZ XZ7ocCUDrJY5StJdg7DBcfgXSA4oGzaf+epVVIQoIKxbpM3R6c ubFkX4U/vVcRN1yOToFLro2BRavcUxZLp/462asw==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Targets

    • Target

      7bad3bfde268d71c7dfd13c6d62dc607427912e4106cb4247ef26f4c822fab63

    • Size

      35KB

    • MD5

      e90699a13fec55e39e444b3f5dfa98ce

    • SHA1

      76283d6c1eea982096fa168b138772094c812474

    • SHA256

      7bad3bfde268d71c7dfd13c6d62dc607427912e4106cb4247ef26f4c822fab63

    • SHA512

      7b721c6b001c9b0c23e86e3f3a53b13cc08985f09b579e7230af695f71feb1f7b6cb348456b24cb102296da84584a8472c39417fc3275566af016ae656e2ed01

    • SSDEEP

      768:18kq7NCuaw+84Q4h99vP8jqgbMidbhvJU9nbcuyD7UI:18kq1aww5EjIidbhhU9nouy8

    • Detected Netwalker Ransomware

      Detected unpacked Netwalker executable.

    • Netwalker Ransomware

      Ransomware family with multiple versions. Also known as MailTo.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

    • UPX packed file

      Detects executables packed with UPX/modified UPX open source packer.

    • Deletes itself

    • Reads user/profile data of web browsers

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

MITRE ATT&CK Matrix ATT&CK v6

Defense Evasion

File Deletion

2
T1107

Credential Access

Credentials in Files

1
T1081

Discovery

Query Registry

1
T1012

System Information Discovery

1
T1082

Collection

Data from Local System

1
T1005

Impact

Inhibit System Recovery

2
T1490

Tasks