Overview

overview

10

Static

static

f4ccf3d32f...in.dll

windows7_x64

10

f4ccf3d32f...in.dll

windows10_x64

10

Analysis

  • max time kernel
    123s
  • max time network
    125s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 20:17

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General

  • Target

    f4ccf3d32f438869e6a518ec970e0724b52abd3a39a4c2891fa3c2d3a4835a6e.bin.dll

  • Size

    93KB

  • MD5

    809a76a64875aeede09f7db28a2333a9

  • SHA1

    97a52181f6907f8aaacae0bec013fa50b8706cec

  • SHA256

    f4ccf3d32f438869e6a518ec970e0724b52abd3a39a4c2891fa3c2d3a4835a6e

  • SHA512

    d3f9a3b9881c00a9d22d877a60faf511feb7a59eec87735836d58d5ec0a17a7eee7d9115cbfb7f3595ea5a500e3bcb7dba7d425260e913f5c67e5542b40286cb

Score
10/10
netwalkerransomwarespyware

Malware Config

Extracted

Path

C:\ProgramData\Microsoft\MF\F5391E-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f5391e -- 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_f5391e: 2QdwI/yJizbNAydt+rsvFUjqlnVojBD42Rp9rZS5OWGErPmTzh 3ZQu1SzrRjcK05Gw2DjoYdF/yYazevsD3IQVjY4ALCWflOUMkL VvCKrX6H8N+ef6woHVNfaFBPfFRA1LqbFoFcvpU3GugzydfjSc SRwi5sBa7SJ5EmwN/8hBX+SaFYd/bbhzhPKxNyplPBIE6UJguy BWoMKM7g37PPP+tLIRu+alPtQ8BnaO4mvei/nlZP7EeUZ+p4Jg zAnQcvVxsJkeYN/q2YZc6aWPRADVYD+efNIlZ4YA==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Users\Admin\Desktop\F5391E-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f5391e -- 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_f5391e: 2QdwI/yJizbNAydt+rsvFUjqlnVojBD42Rp9rZS5OWGErPmTzh 3ZQu1SzrRjcK05Gw2DjoYdF/yYazevsD3IQVjY4ALCWflOUMkL VvCKrX6H8N+ef6woHVNfaFBPfFRA1LqbFoFcvpU3GugzydfjSc SRwi5sBa7SJ5EmwN/8hBX+SaFYd/bbhzhPKxNyplPBIE6UJguy BWoMKM7g37PPP+tLIRu+alPtQ8BnaO4mvei/nlZP7EeUZ+p4Jg zAnQcvVxsJkeYN/q2YZc6aWPRADVYD+efNIlZ4YA==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f5391e -- 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_f5391e: 2QdwI/yJizbNAydt+rsvFUjqlnVojBD42Rp9rZS5OWGErPmTzh 3ZQu1SzrRjcK05Gw2DjoYdF/yYazevsD3IQVjY4ALCWflOUMkL VvCKrX6H8N+ef6woHVNfaFBPfFRA1LqbFoFcvpU3GugzydfjSc SRwi5sBa7SJ5EmwN/8hBX+SaFYd/bbhzhPKxNyplPBIE6UJguy BWoMKM7g37PPP+tLIRu+alPtQ8BnaO4mvei/nlZP7EeUZ+p4Jg zAnQcvVxsJkeYN/q2YZc6aWPRADVYD+efNIlZ4YA==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Program Files (x86)\Microsoft Office\Office14\1033\F5391E-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f5391e -- 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_f5391e: 2QdwI/yJizbNAydt+rsvFUjqlnVojBD42Rp9rZS5OWGErPmTzh 3ZQu1SzrRjcK05Gw2DjoYdF/yYazevsD3IQVjY4ALCWflOUMkL VvCKrX6H8N+ef6woHVNfaFBPfFRA1LqbFoFcvpU3GugzydfjSc SRwi5sBa7SJ5EmwN/8hBX+SaFYd/bbhzhPKxNyplPBIE6UJguy BWoMKM7g37PPP+tLIRu+alPtQ8BnaO4mvei/nlZP7EeUZ+p4Jg zAnQcvVxsJkeYN/q2YZc6aWPRADVYD+efNIlZ4YA==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f5391e -- 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_f5391e: 2QdwI/yJizbNAydt+rsvFUjqlnVojBD42Rp9rZS5OWGErPmTzh 3ZQu1SzrRjcK05Gw2DjoYdF/yYazevsD3IQVjY4ALCWflOUMkL VvCKrX6H8N+ef6woHVNfaFBPfFRA1LqbFoFcvpU3GugzydfjSc SRwi5sBa7SJ5EmwN/8hBX+SaFYd/bbhzhPKxNyplPBIE6UJguy BWoMKM7g37PPP+tLIRu+alPtQ8BnaO4mvei/nlZP7EeUZ+p4Jg zAnQcvVxsJkeYN/q2YZc6aWPRADVYD+efNIlZ4YA==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f5391e -- 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_f5391e: 2QdwI/yJizbNAydt+rsvFUjqlnVojBD42Rp9rZS5OWGErPmTzh 3ZQu1SzrRjcK05Gw2DjoYdF/yYazevsD3IQVjY4ALCWflOUMkL VvCKrX6H8N+ef6woHVNfaFBPfFRA1LqbFoFcvpU3GugzydfjSc SRwi5sBa7SJ5EmwN/8hBX+SaFYd/bbhzhPKxNyplPBIE6UJguy BWoMKM7g37PPP+tLIRu+alPtQ8BnaO4mvei/nlZP7EeUZ+p4Jg zAnQcvVxsJkeYN/q2YZc6aWPRADVYD+efNIlZ4YA==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Signatures

  • Netwalker Ransomware

    Ransomware family with multiple versions. Also known as MailTo.

    ransomwarenetwalker
  • Modifies extensions of user files 9 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Reads user/profile data of web browsers 2 TTPs

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

    spyware
  • Drops file in Program Files directory 7479 IoCs
  • Suspicious behavior: EnumeratesProcesses 216 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 3 IoCs

Processes

  • C:\Windows\system32\rundll32.exe
    rundll32.exe C:\Users\Admin\AppData\Local\Temp\f4ccf3d32f438869e6a518ec970e0724b52abd3a39a4c2891fa3c2d3a4835a6e.bin.dll,#1
    1⤵
    • Modifies extensions of user files
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:288
    • C:\Windows\system32\notepad.exe
      C:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\F5391E-Readme.txt"
      2⤵
        PID:3964

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Privilege Escalation

    Defense Evasion

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    Lateral Movement

    Collection

    Data from Local System

    1
    T1005

    Exfiltration

    Command and Control

    Impact

    Replay Monitor

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    Downloads

    • C:\Users\Admin\Desktop\F5391E-Readme.txt
      MD5

      fef22b66ca6ef4783460c6c75db77d3f

      SHA1

      81bc76a4264975b35365b12d117bbe4ba936ea02

      SHA256

      c355131e45b83d6e8fb6906306de4343e3be988365694f44d5184b32cea4f86e

      SHA512

      512fc75706214939e55af5a18c2bb4ac03849338a0dc116e8aa7564da4153f135288503e55205aa6485b2404ebeca72e28a81bf0895624223d2690d02d7fb33f

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    • memory/3964-0-0x0000000000000000-mapping.dmp
      Download