Overview

overview

10

Static

static

10

63ad8faf3c...c4.exe

windows7_x64

10

63ad8faf3c...c4.exe

windows10_x64

10

Analysis

  • max time kernel
    103s
  • max time network
    35s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 20:17

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General

  • Target

    63ad8faf3c2b306ccd8aa7874e24e7d48e0f6bbeeb37adab26c2efa1410022c4.exe

  • Size

    80KB

  • MD5

    bdc345b7bcecf485d2ee9f0011fd2fb3

  • SHA1

    b1610f94dc8235d939b4817c36e09a8ebc3a29dd

  • SHA256

    63ad8faf3c2b306ccd8aa7874e24e7d48e0f6bbeeb37adab26c2efa1410022c4

  • SHA512

    1d56a85688d6499512421b38ecca8167e31c0ec2bbfc812e6c742820690f7e608c45b6e7159c59b583f608a724f855a6481facda0846ccd7ee4acac446a83335

Score
10/10
netwalkerpersistenceransomwarespyware

Malware Config

Extracted

Path

C:\Program Files\Google\Chrome\Application\8D94CC-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .8d94cc -- 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_8d94cc: uHIbkWG1yK2ta/z+5TZOIJ/qlGr1jMVLUXbveC1OA8xyU2CQ20 Kk1KivrSIKIB0gh7l82rg3cZPFqpRQjYqjlv2K4ipPgD8d65Yy i3xp0yhIJoMR0mK7G2c2LbLw0jM6CqzdqymUUaShe9xWW3cO/a RJ1kA2JpWjTOe1PncPs0SQVBbh5ikXbuBxqLv8UYksHpXKkmgZ QKjWdi1EVFw6W/QOvU2I5RHNX+CDAZjCC9vZaYpz1jNeaD48FL sz93V437qkg8XB9KtYRl6Mx2V2Pav5OYYgn3mtZA==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Program Files (x86)\Microsoft Office\Office14\BORDERS\8D94CC-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .8d94cc -- 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_8d94cc: uHIbkWG1yK2ta/z+5TZOIJ/qlGr1jMVLUXbveC1OA8xyU2CQ20 Kk1KivrSIKIB0gh7l82rg3cZPFqpRQjYqjlv2K4ipPgD8d65Yy i3xp0yhIJoMR0mK7G2c2LbLw0jM6CqzdqymUUaShe9xWW3cO/a RJ1kA2JpWjTOe1PncPs0SQVBbh5ikXbuBxqLv8UYksHpXKkmgZ QKjWdi1EVFw6W/QOvU2I5RHNX+CDAZjCC9vZaYpz1jNeaD48FL sz93V437qkg8XB9KtYRl6Mx2V2Pav5OYYgn3mtZA==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .8d94cc -- 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_8d94cc: uHIbkWG1yK2ta/z+5TZOIJ/qlGr1jMVLUXbveC1OA8xyU2CQ20 Kk1KivrSIKIB0gh7l82rg3cZPFqpRQjYqjlv2K4ipPgD8d65Yy i3xp0yhIJoMR0mK7G2c2LbLw0jM6CqzdqymUUaShe9xWW3cO/a RJ1kA2JpWjTOe1PncPs0SQVBbh5ikXbuBxqLv8UYksHpXKkmgZ QKjWdi1EVFw6W/QOvU2I5RHNX+CDAZjCC9vZaYpz1jNeaD48FL sz93V437qkg8XB9KtYRl6Mx2V2Pav5OYYgn3mtZA==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .8d94cc -- 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_8d94cc: uHIbkWG1yK2ta/z+5TZOIJ/qlGr1jMVLUXbveC1OA8xyU2CQ20 Kk1KivrSIKIB0gh7l82rg3cZPFqpRQjYqjlv2K4ipPgD8d65Yy i3xp0yhIJoMR0mK7G2c2LbLw0jM6CqzdqymUUaShe9xWW3cO/a RJ1kA2JpWjTOe1PncPs0SQVBbh5ikXbuBxqLv8UYksHpXKkmgZ QKjWdi1EVFw6W/QOvU2I5RHNX+CDAZjCC9vZaYpz1jNeaD48FL sz93V437qkg8XB9KtYRl6Mx2V2Pav5OYYgn3mtZA==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Program Files (x86)\Microsoft Office\Templates\1033\8D94CC-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .8d94cc -- 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_8d94cc: uHIbkWG1yK2ta/z+5TZOIJ/qlGr1jMVLUXbveC1OA8xyU2CQ20 Kk1KivrSIKIB0gh7l82rg3cZPFqpRQjYqjlv2K4ipPgD8d65Yy i3xp0yhIJoMR0mK7G2c2LbLw0jM6CqzdqymUUaShe9xWW3cO/a RJ1kA2JpWjTOe1PncPs0SQVBbh5ikXbuBxqLv8UYksHpXKkmgZ QKjWdi1EVFw6W/QOvU2I5RHNX+CDAZjCC9vZaYpz1jNeaD48FL sz93V437qkg8XB9KtYRl6Mx2V2Pav5OYYgn3mtZA==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .8d94cc -- 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_8d94cc: uHIbkWG1yK2ta/z+5TZOIJ/qlGr1jMVLUXbveC1OA8xyU2CQ20 Kk1KivrSIKIB0gh7l82rg3cZPFqpRQjYqjlv2K4ipPgD8d65Yy i3xp0yhIJoMR0mK7G2c2LbLw0jM6CqzdqymUUaShe9xWW3cO/a RJ1kA2JpWjTOe1PncPs0SQVBbh5ikXbuBxqLv8UYksHpXKkmgZ QKjWdi1EVFw6W/QOvU2I5RHNX+CDAZjCC9vZaYpz1jNeaD48FL sz93V437qkg8XB9KtYRl6Mx2V2Pav5OYYgn3mtZA==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Signatures

  • Netwalker Ransomware

    Ransomware family with multiple versions. Also known as MailTo.

    ransomwarenetwalker
  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

    ransomware
  • Modifies extensions of user files 10 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Deletes itself 1 IoCs
  • Reads user/profile data of web browsers 2 TTPs

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

    spyware
  • Modifies service 2 TTPs 5 IoCs
    persistence
  • Drops file in Program Files directory 7500 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

    ransomware
  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 13777 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\63ad8faf3c2b306ccd8aa7874e24e7d48e0f6bbeeb37adab26c2efa1410022c4.exe
    "C:\Users\Admin\AppData\Local\Temp\63ad8faf3c2b306ccd8aa7874e24e7d48e0f6bbeeb37adab26c2efa1410022c4.exe"
    1⤵
    • Modifies extensions of user files
    • Drops file in Program Files directory
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1096
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:1052
    • C:\Windows\SysWOW64\notepad.exe
      C:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\8D94CC-Readme.txt"
      2⤵
        PID:6540
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c "C:\Users\Admin\AppData\Local\Temp\B74E.tmp.bat"
        2⤵
        • Deletes itself
        • Suspicious use of WriteProcessMemory
        PID:3756
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /F /PID 1096
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:1580
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Modifies service
      • Suspicious use of AdjustPrivilegeToken
      PID:4844

    Network

    MITRE ATT&CK Matrix ATT&CK v6

    Initial Access

    Execution

    Persistence

    Modify Existing Service

    1
    T1031

    Privilege Escalation

    Defense Evasion

    File Deletion

    2
    T1107

    Modify Registry

    1
    T1112

    Credential Access

    Credentials in Files

    1
    T1081

    Discovery

    Lateral Movement

    Collection

    Data from Local System

    1
    T1005

    Exfiltration

    Command and Control

    Impact

    Inhibit System Recovery

    2
    T1490

    Replay Monitor

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    Downloads

    • C:\Users\Admin\AppData\Local\Temp\B74E.tmp.bat
      MD5

      e3943f7e811987e03565844c5b255bc3

      SHA1

      0b5106d943af7ff33b60a4aee873b7ae7df1c02d

      SHA256

      ef735a23d9425a7a37bc2c16bafbd04e8e772ce998215769912fe78b31f80814

      SHA512

      9e7404904ddb46e4514b579032e98f05d5c39cc974709e5b56817c251768601b8ad2ad71cbf63d2ead382ee89d9cf96594479602e9732f6e139159429befbc04

      Download Submit
    • C:\Users\Admin\Desktop\8D94CC-Readme.txt
      MD5

      05268d731cb14a6dfb5eaa2fa7178a54

      SHA1

      3138ced55ed46dd796a85bd8f5f46bb685364272

      SHA256

      6369a3cfdba6eaf1f37f89f2b096379f4f46ac155ff0e454f3b1e7ea0274ec46

      SHA512

      a7d2ebf3969bf238912a85f220514b7758cbd4d1f5b14c30336af429985f18ab3c65a0c8c2c4ccb7d1f8b804fe2894ef01a2f3656b7b9c14156155bae276405b

      Download Submit
    • memory/1052-0-0x0000000000000000-mapping.dmp
      Download
    • memory/1580-7-0x0000000000000000-mapping.dmp
      Download
    • memory/3756-4-0x0000000000000000-mapping.dmp
      Download
    • memory/6540-3-0x0000000000000000-mapping.dmp
      Download