Overview

overview

10

Static

static

10

444169e156...43.exe

windows7_x64

10

444169e156...43.exe

windows10_x64

10

Analysis

  • max time kernel
    163s
  • max time network
    169s
  • platform
    windows10_x64
  • resource
    win10v20201028
  • submitted
    09-11-2020 20:17

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General

  • Target

    444169e156b48a54e9f96b6b3a1c333670546663c8a2e14e561884c052420043.exe

  • Size

    69KB

  • MD5

    addc865f61694906aa18756f722e1b56

  • SHA1

    c4483ac873b4ee8623a65e682ffaa0535091f56a

  • SHA256

    444169e156b48a54e9f96b6b3a1c333670546663c8a2e14e561884c052420043

  • SHA512

    6243310416203edf01d2c797c282005c20c49a22c8ab64b8a51967dda7e50f1a1ac89a61694b1277019c5373f3bf7262a13e783d4018884bbb9f3c9703bf9e34

Score
10/10
netwalkerpersistenceransomwarespyware

Malware Config

Extracted

Path

C:\Users\Public\Libraries\591B12-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .591b12 -- 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_591b12: w/cHUQwehe6OeXsCmy92/QH/VfsNlP8FmL5VohS8bks9kGRLUv oXnKULnZvihA4PU9mFBt//vzj+JTCY7IBzTR6XQvxz3kl07be8 ib2yhGmzeiII1gHE3hXyNQHRAz5EiBqGzFJjfTun8G0ZlbbV89 6Uf6zHhiQNyyMdehlWQnb1eYf+k9KxfFP7eqkN7040lW9NJoIV BEfp8J914ICEhaLebvO/i7+k6f5Pst8klN9QSdOnR4mHpmndNR VnS9cpIoxhYWt4zk9AePBBEHb47GPR7nyrSNcLpw==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Users\Admin\AppData\Roaming\591B12-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .591b12 -- 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_591b12: w/cHUQwehe6OeXsCmy92/QH/VfsNlP8FmL5VohS8bks9kGRLUv oXnKULnZvihA4PU9mFBt//vzj+JTCY7IBzTR6XQvxz3kl07be8 ib2yhGmzeiII1gHE3hXyNQHRAz5EiBqGzFJjfTun8G0ZlbbV89 6Uf6zHhiQNyyMdehlWQnb1eYf+k9KxfFP7eqkN7040lW9NJoIV BEfp8J914ICEhaLebvO/i7+k6f5Pst8klN9QSdOnR4mHpmndNR VnS9cpIoxhYWt4zk9AePBBEHb47GPR7nyrSNcLpw==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .591b12 -- 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_591b12: w/cHUQwehe6OeXsCmy92/QH/VfsNlP8FmL5VohS8bks9kGRLUv oXnKULnZvihA4PU9mFBt//vzj+JTCY7IBzTR6XQvxz3kl07be8 ib2yhGmzeiII1gHE3hXyNQHRAz5EiBqGzFJjfTun8G0ZlbbV89 6Uf6zHhiQNyyMdehlWQnb1eYf+k9KxfFP7eqkN7040lW9NJoIV BEfp8J914ICEhaLebvO/i7+k6f5Pst8klN9QSdOnR4mHpmndNR VnS9cpIoxhYWt4zk9AePBBEHb47GPR7nyrSNcLpw==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Extracted

Path

C:\Program Files (x86)\Adobe\Acrobat Reader DC\Reader\WebResources\Resource0\static\js\plugins\fss\img\tools\591B12-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .591b12 -- 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_591b12: w/cHUQwehe6OeXsCmy92/QH/VfsNlP8FmL5VohS8bks9kGRLUv oXnKULnZvihA4PU9mFBt//vzj+JTCY7IBzTR6XQvxz3kl07be8 ib2yhGmzeiII1gHE3hXyNQHRAz5EiBqGzFJjfTun8G0ZlbbV89 6Uf6zHhiQNyyMdehlWQnb1eYf+k9KxfFP7eqkN7040lW9NJoIV BEfp8J914ICEhaLebvO/i7+k6f5Pst8klN9QSdOnR4mHpmndNR VnS9cpIoxhYWt4zk9AePBBEHb47GPR7nyrSNcLpw==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .591b12 -- 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_591b12: w/cHUQwehe6OeXsCmy92/QH/VfsNlP8FmL5VohS8bks9kGRLUv oXnKULnZvihA4PU9mFBt//vzj+JTCY7IBzTR6XQvxz3kl07be8 ib2yhGmzeiII1gHE3hXyNQHRAz5EiBqGzFJjfTun8G0ZlbbV89 6Uf6zHhiQNyyMdehlWQnb1eYf+k9KxfFP7eqkN7040lW9NJoIV BEfp8J914ICEhaLebvO/i7+k6f5Pst8klN9QSdOnR4mHpmndNR VnS9cpIoxhYWt4zk9AePBBEHb47GPR7nyrSNcLpw==}Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .591b12 -- 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_591b12: w/cHUQwehe6OeXsCmy92/QH/VfsNlP8FmL5VohS8bks9kGRLUv oXnKULnZvihA4PU9mFBt//vzj+JTCY7IBzTR6XQvxz3kl07be8 ib2yhGmzeiII1gHE3hXyNQHRAz5EiBqGzFJjfTun8G0ZlbbV89 6Uf6zHhiQNyyMdehlWQnb1eYf+k9KxfFP7eqkN7040lW9NJoIV BEfp8J914ICEhaLebvO/i7+k6f5Pst8klN9QSdOnR4mHpmndNR VnS9cpIoxhYWt4zk9AePBBEHb47GPR7nyrSNcLpw==}
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 7 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
  • Modifies service 2 TTPs 5 IoCs
    persistence
  • Drops file in Program Files directory 14845 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 42558 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\444169e156b48a54e9f96b6b3a1c333670546663c8a2e14e561884c052420043.exe
    "C:\Users\Admin\AppData\Local\Temp\444169e156b48a54e9f96b6b3a1c333670546663c8a2e14e561884c052420043.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:728
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:3916
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Modifies service
    • Suspicious use of AdjustPrivilegeToken
    PID:9484

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

  • memory/3916-0-0x0000000000000000-mapping.dmp
    Download