8639825230d5504fd8126ed55b2d7aeb72944ffe17e762801aab8d4f8f880160.sample

General
Target

8639825230d5504fd8126ed55b2d7aeb72944ffe17e762801aab8d4f8f880160.sample

Size

296KB

Sample

210726-k7wgvskdj2

Score
10 /10
MD5

258ed03a6e4d9012f8102c635a5e3dcd

SHA1

a3bc2a30318f9bd2b51cb57e2022996e7f15c69e

SHA256

8639825230d5504fd8126ed55b2d7aeb72944ffe17e762801aab8d4f8f880160

SHA512

967414274cb8d8fdf0e4dd446332b37060d54a726ab77f4ec704a5afe12162e098183add4342d1710db1e1c3b74035a001cf4c2d7790a27bf6d8381c34a96889

Malware Config

Extracted

Path C:\ProgramData\Package Cache\{ca67548a-5ebe-413a-b50c-4b9ceb6d66c6}\F8999B-Readme.txt
Family netwalker
Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f8999b -- 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: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_f8999b: yXiiz+Bg9mkAil/kZuFwIKgvfsUPuZUXG0gbLXIkPB43CWYhUk wrTY6R+FQFBNN7CutLRghn6kGV3DlPTppbFLaNiaup/vAc41Zj ArwiL8q+up/RE7Mv+DxQVI62uAOGc0vfNhGT5tStpt6eqNKFbd Av926ACkkMLoP2+mVhH227O5G2LNzhhfw5c1KIZlrNNrDIIGYY xZ4jlWU8Gmy/hcIQ3k2zCduRujhTUsBsWJN6eFU+UXN0G1HiIK iptlgRQapXeUQ2GHKd/yGzN112KUC3Wh3RceMKKg==}
URLs

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path C:\Program Files (x86)\Microsoft Office\Office14\PUBWIZ\F8999B-Readme.txt
Family netwalker
Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f8999b -- 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: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_f8999b: yXiiz+Bg9mkAil/kZuFwIKgvfsUPuZUXG0gbLXIkPB43CWYhUk wrTY6R+FQFBNN7CutLRghn6kGV3DlPTppbFLaNiaup/vAc41Zj ArwiL8q+up/RE7Mv+DxQVI62uAOGc0vfNhGT5tStpt6eqNKFbd Av926ACkkMLoP2+mVhH227O5G2LNzhhfw5c1KIZlrNNrDIIGYY xZ4jlWU8Gmy/hcIQ3k2zCduRujhTUsBsWJN6eFU+UXN0G1HiIK iptlgRQapXeUQ2GHKd/yGzN112KUC3Wh3RceMKKg==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f8999b -- 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: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_f8999b: yXiiz+Bg9mkAil/kZuFwIKgvfsUPuZUXG0gbLXIkPB43CWYhUk wrTY6R+FQFBNN7CutLRghn6kGV3DlPTppbFLaNiaup/vAc41Zj ArwiL8q+up/RE7Mv+DxQVI62uAOGc0vfNhGT5tStpt6eqNKFbd Av926ACkkMLoP2+mVhH227O5G2LNzhhfw5c1KIZlrNNrDIIGYY xZ4jlWU8Gmy/hcIQ3k2zCduRujhTUsBsWJN6eFU+UXN0G1HiIK iptlgRQapXeUQ2GHKd/yGzN112KUC3Wh3RceMKKg==}
URLs

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path C:\Users\Admin\Desktop\F8999B-Readme.txt
Family netwalker
Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f8999b -- 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: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_f8999b: yXiiz+Bg9mkAil/kZuFwIKgvfsUPuZUXG0gbLXIkPB43CWYhUk wrTY6R+FQFBNN7CutLRghn6kGV3DlPTppbFLaNiaup/vAc41Zj ArwiL8q+up/RE7Mv+DxQVI62uAOGc0vfNhGT5tStpt6eqNKFbd Av926ACkkMLoP2+mVhH227O5G2LNzhhfw5c1KIZlrNNrDIIGYY xZ4jlWU8Gmy/hcIQ3k2zCduRujhTUsBsWJN6eFU+UXN0G1HiIK iptlgRQapXeUQ2GHKd/yGzN112KUC3Wh3RceMKKg==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f8999b -- 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: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_f8999b: yXiiz+Bg9mkAil/kZuFwIKgvfsUPuZUXG0gbLXIkPB43CWYhUk wrTY6R+FQFBNN7CutLRghn6kGV3DlPTppbFLaNiaup/vAc41Zj ArwiL8q+up/RE7Mv+DxQVI62uAOGc0vfNhGT5tStpt6eqNKFbd Av926ACkkMLoP2+mVhH227O5G2LNzhhfw5c1KIZlrNNrDIIGYY xZ4jlWU8Gmy/hcIQ3k2zCduRujhTUsBsWJN6eFU+UXN0G1HiIK iptlgRQapXeUQ2GHKd/yGzN112KUC3Wh3RceMKKg==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f8999b -- 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: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_f8999b: yXiiz+Bg9mkAil/kZuFwIKgvfsUPuZUXG0gbLXIkPB43CWYhUk wrTY6R+FQFBNN7CutLRghn6kGV3DlPTppbFLaNiaup/vAc41Zj ArwiL8q+up/RE7Mv+DxQVI62uAOGc0vfNhGT5tStpt6eqNKFbd Av926ACkkMLoP2+mVhH227O5G2LNzhhfw5c1KIZlrNNrDIIGYY xZ4jlWU8Gmy/hcIQ3k2zCduRujhTUsBsWJN6eFU+UXN0G1HiIK iptlgRQapXeUQ2GHKd/yGzN112KUC3Wh3RceMKKg==}
URLs

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path C:\50C07F-Readme.txt
Family netwalker
Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .50c07f -- 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: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_50c07f: 4/7JW2LFqC7vqbdXrHqqAYMbxFyULfCdsjbzAjFzjjwxqO3zxJ /83PSfHKjP3YUYuE6OUKUSaa+vtAb9rmz1IoIbCQPKVXgH41Zj Ai0z8GnMhMwWcUwFCOwpjGrkX8+OJKj+MVH7cSWBRX/Mn/qyo7 paBp3XbU1jWKbIBch2/TZ/xH+VbVAb39GpUVuZ7Ma8nOdiwcFG +uclrHZLW+xixj3y2JyOZIy6huBGVI+zrxehOvElt5If42aQO0 6ruO4cw+cioJSkZnf4K0D/zh1ih77qgTxaqiPeMQ==}
URLs

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path C:\Users\Admin\Downloads\50C07F-Readme.txt
Family netwalker
Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .50c07f -- 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: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_50c07f: 4/7JW2LFqC7vqbdXrHqqAYMbxFyULfCdsjbzAjFzjjwxqO3zxJ /83PSfHKjP3YUYuE6OUKUSaa+vtAb9rmz1IoIbCQPKVXgH41Zj Ai0z8GnMhMwWcUwFCOwpjGrkX8+OJKj+MVH7cSWBRX/Mn/qyo7 paBp3XbU1jWKbIBch2/TZ/xH+VbVAb39GpUVuZ7Ma8nOdiwcFG +uclrHZLW+xixj3y2JyOZIy6huBGVI+zrxehOvElt5If42aQO0 6ruO4cw+cioJSkZnf4K0D/zh1ih77qgTxaqiPeMQ==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .50c07f -- 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: rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion 3.Put your personal code in the input form: {code_50c07f: 4/7JW2LFqC7vqbdXrHqqAYMbxFyULfCdsjbzAjFzjjwxqO3zxJ /83PSfHKjP3YUYuE6OUKUSaa+vtAb9rmz1IoIbCQPKVXgH41Zj Ai0z8GnMhMwWcUwFCOwpjGrkX8+OJKj+MVH7cSWBRX/Mn/qyo7 paBp3XbU1jWKbIBch2/TZ/xH+VbVAb39GpUVuZ7Ma8nOdiwcFG +uclrHZLW+xixj3y2JyOZIy6huBGVI+zrxehOvElt5If42aQO0 6ruO4cw+cioJSkZnf4K0D/zh1ih77qgTxaqiPeMQ==}
URLs

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Targets
Target

8639825230d5504fd8126ed55b2d7aeb72944ffe17e762801aab8d4f8f880160.sample

MD5

258ed03a6e4d9012f8102c635a5e3dcd

Filesize

296KB

Score
10 /10
SHA1

a3bc2a30318f9bd2b51cb57e2022996e7f15c69e

SHA256

8639825230d5504fd8126ed55b2d7aeb72944ffe17e762801aab8d4f8f880160

SHA512

967414274cb8d8fdf0e4dd446332b37060d54a726ab77f4ec704a5afe12162e098183add4342d1710db1e1c3b74035a001cf4c2d7790a27bf6d8381c34a96889

Tags

Signatures

  • Detected Netwalker Ransomware

    Description

    Detected unpacked Netwalker executable.

  • Netwalker Ransomware

    Description

    Ransomware family with multiple versions. Also known as MailTo.

    Tags

  • Deletes shadow copies

    Description

    Ransomware often targets backup files to inhibit system recovery.

    Tags

    TTPs

    File Deletion Inhibit System Recovery
  • Modifies extensions of user files

    Description

    Ransomware generally changes the extension on encrypted files.

    Tags

  • Deletes itself

  • Reads user/profile data of web browsers

    Description

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

    Tags

    TTPs

    Data from Local System Credentials in Files

Related Tasks

MITRE ATT&CK Matrix
Command and Control
    Credential Access
    Defense Evasion
    Discovery
      Execution
        Exfiltration
          Initial Access
            Lateral Movement
              Persistence
                Privilege Escalation
                  Tasks