General

  • Target

    8639825230d5504fd8126ed55b2d7aeb72944ffe17e762801aab8d4f8f880160.sample

  • Size

    296KB

  • Sample

    210726-k7wgvskdj2

  • 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

    • Size

      296KB

    • MD5

      258ed03a6e4d9012f8102c635a5e3dcd

    • SHA1

      a3bc2a30318f9bd2b51cb57e2022996e7f15c69e

    • SHA256

      8639825230d5504fd8126ed55b2d7aeb72944ffe17e762801aab8d4f8f880160

    • SHA512

      967414274cb8d8fdf0e4dd446332b37060d54a726ab77f4ec704a5afe12162e098183add4342d1710db1e1c3b74035a001cf4c2d7790a27bf6d8381c34a96889

    • 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.

    • 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

Collection

Data from Local System

1
T1005

Impact

Inhibit System Recovery

2
T1490

Tasks