Overview

overview

10

Static

static

10

4abf2d4b60...af.exe

windows7_x64

10

4abf2d4b60...af.exe

windows10_x64

10

Analysis

  • max time kernel
    122s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7v20201028
  • submitted
    09-11-2020 20:17

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General

  • Target

    4abf2d4b604ad5c3dca0006e9762562ea104e76e7c0dcfa8fddafda8b11b2eaf.exe

  • Size

    69KB

  • MD5

    729928e6fd6adafdd0a7fe876701bd7e

  • SHA1

    0aa73a466c599b0b2c6e60f0aa0676b9bf6741c7

  • SHA256

    4abf2d4b604ad5c3dca0006e9762562ea104e76e7c0dcfa8fddafda8b11b2eaf

  • SHA512

    ebb5b53b5f4b6a3fcf7b7b19b4b7f657f0a03268223d6fd1209e2e4b9d837a8aa3a8ce79ab64a2a843c120cec366d4191f1e0452529d8360ed0ee06c0c75445e

Score
10/10
netwalkerpersistenceransomwarespyware

Malware Config

Extracted

Path

C:\Users\Public\Libraries\F12A68-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f12a68 -- 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_f12a68: A0b+9w8w2YwS7Zcl45SmwUYG2LeCLQh2koC7ZXk9+fCXT+ufJv bKIPqb16ftkpuCNJs/Xnporw3LcFeMF6XIyYxTVsKQEZN0Rw+2 qBYQStyHNFuzfCigUEdNhtYdNEbS5mydVGl/fbeQLEGjponyM/ kBOdSK7VZR+RrWjoyepJwqrMZfLHcyAWUF9eHZ3fUFtElrjn2r 9txIOpC2SKU4xwSTI6y8JJxb9Ib74rqw5ySo1v6PuFNj4lEXOn wSvyll7qbZ0Zq6B6hH+J3+74W5rIbrkbHjpbZT7A==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Users\Admin\AppData\Roaming\F12A68-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f12a68 -- 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_f12a68: A0b+9w8w2YwS7Zcl45SmwUYG2LeCLQh2koC7ZXk9+fCXT+ufJv bKIPqb16ftkpuCNJs/Xnporw3LcFeMF6XIyYxTVsKQEZN0Rw+2 qBYQStyHNFuzfCigUEdNhtYdNEbS5mydVGl/fbeQLEGjponyM/ kBOdSK7VZR+RrWjoyepJwqrMZfLHcyAWUF9eHZ3fUFtElrjn2r 9txIOpC2SKU4xwSTI6y8JJxb9Ib74rqw5ySo1v6PuFNj4lEXOn wSvyll7qbZ0Zq6B6hH+J3+74W5rIbrkbHjpbZT7A==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f12a68 -- 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_f12a68: A0b+9w8w2YwS7Zcl45SmwUYG2LeCLQh2koC7ZXk9+fCXT+ufJv bKIPqb16ftkpuCNJs/Xnporw3LcFeMF6XIyYxTVsKQEZN0Rw+2 qBYQStyHNFuzfCigUEdNhtYdNEbS5mydVGl/fbeQLEGjponyM/ kBOdSK7VZR+RrWjoyepJwqrMZfLHcyAWUF9eHZ3fUFtElrjn2r 9txIOpC2SKU4xwSTI6y8JJxb9Ib74rqw5ySo1v6PuFNj4lEXOn wSvyll7qbZ0Zq6B6hH+J3+74W5rIbrkbHjpbZT7A==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Program Files (x86)\Microsoft Office\Document Themes 14\Theme Effects\F12A68-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f12a68 -- 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_f12a68: A0b+9w8w2YwS7Zcl45SmwUYG2LeCLQh2koC7ZXk9+fCXT+ufJv bKIPqb16ftkpuCNJs/Xnporw3LcFeMF6XIyYxTVsKQEZN0Rw+2 qBYQStyHNFuzfCigUEdNhtYdNEbS5mydVGl/fbeQLEGjponyM/ kBOdSK7VZR+RrWjoyepJwqrMZfLHcyAWUF9eHZ3fUFtElrjn2r 9txIOpC2SKU4xwSTI6y8JJxb9Ib74rqw5ySo1v6PuFNj4lEXOn wSvyll7qbZ0Zq6B6hH+J3+74W5rIbrkbHjpbZT7A==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f12a68 -- 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_f12a68: A0b+9w8w2YwS7Zcl45SmwUYG2LeCLQh2koC7ZXk9+fCXT+ufJv bKIPqb16ftkpuCNJs/Xnporw3LcFeMF6XIyYxTVsKQEZN0Rw+2 qBYQStyHNFuzfCigUEdNhtYdNEbS5mydVGl/fbeQLEGjponyM/ kBOdSK7VZR+RrWjoyepJwqrMZfLHcyAWUF9eHZ3fUFtElrjn2r 9txIOpC2SKU4xwSTI6y8JJxb9Ib74rqw5ySo1v6PuFNj4lEXOn wSvyll7qbZ0Zq6B6hH+J3+74W5rIbrkbHjpbZT7A==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f12a68 -- 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_f12a68: A0b+9w8w2YwS7Zcl45SmwUYG2LeCLQh2koC7ZXk9+fCXT+ufJv bKIPqb16ftkpuCNJs/Xnporw3LcFeMF6XIyYxTVsKQEZN0Rw+2 qBYQStyHNFuzfCigUEdNhtYdNEbS5mydVGl/fbeQLEGjponyM/ kBOdSK7VZR+RrWjoyepJwqrMZfLHcyAWUF9eHZ3fUFtElrjn2r 9txIOpC2SKU4xwSTI6y8JJxb9Ib74rqw5ySo1v6PuFNj4lEXOn wSvyll7qbZ0Zq6B6hH+J3+74W5rIbrkbHjpbZT7A==}
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 11 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 7480 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 17119 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4abf2d4b604ad5c3dca0006e9762562ea104e76e7c0dcfa8fddafda8b11b2eaf.exe
    "C:\Users\Admin\AppData\Local\Temp\4abf2d4b604ad5c3dca0006e9762562ea104e76e7c0dcfa8fddafda8b11b2eaf.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:1072
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:1680
    • C:\Windows\SysWOW64\notepad.exe
      C:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\F12A68-Readme.txt"
      2⤵
        PID:1208
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c "C:\Users\Admin\AppData\Local\Temp\EE55.tmp.bat"
        2⤵
        • Deletes itself
        • Suspicious use of WriteProcessMemory
        PID:6124
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /F /PID 1072
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:7612
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Modifies service
      • Suspicious use of AdjustPrivilegeToken
      PID:1788

    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

    Loading Replay Monitor...

    Downloads

    • C:\Users\Admin\AppData\Local\Temp\EE55.tmp.bat
      MD5

      62977c18034c68d0dab3f3f8eeae4446

      SHA1

      5f684218d7e88e6c51f02680e0257ec7ae4bc8c1

      SHA256

      e91e54b0ff36951474fa4b46121233d092c028b7f517b462357447843d29da30

      SHA512

      402384f53452916fdab4ace1cb4b5bb1a9b41361033cd9bba232e1a0ebbb5521945c86e785539c96c1e4a64184bb72d0eb9848bc5399e8f44226f7bbc9d2f430

      Download Submit
    • C:\Users\Admin\Desktop\F12A68-Readme.txt
      MD5

      074f6539470f0aad056bebbbdeb67b06

      SHA1

      bc7fbacb5b864c1079f6f5aa8710e7671a7e8b1d

      SHA256

      c4848ae66cc37112f351ae7e838705149e1a01e71e176715d79b066d7dbb7997

      SHA512

      93aa3a21a258585febc51ab3d3cc44d3a6e2ee5c46835345178b0b74a32355790f8fa618376d74d06a981cd3716860b73e4606b25e01bfcaeb8f1af19a061f68

      Download Submit
    • memory/1208-5-0x0000000000000000-mapping.dmp
      Download
    • memory/1680-0-0x0000000000000000-mapping.dmp
      Download
    • memory/6124-10-0x0000000000000000-mapping.dmp
      Download
    • memory/7612-15-0x0000000000000000-mapping.dmp
      Download