Overview

overview

10

Static

static

10

667b5fc2ed...64.exe

windows7_x64

10

667b5fc2ed...64.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    154s
  • max time network
    141s
  • platform
    windows7_x64
  • resource
    win7-en-20211208
  • submitted
    01-02-2022 01:30

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General

  • Target

    667b5fc2edfd84a68093d717396be7fd323c11df63512cde3f4cefe8c2032a64.exe

  • Size

    69KB

  • MD5

    de633ea14b251b2395da8411ff58cee5

  • SHA1

    eee5bbcfcfccaca4374ef2a7a2358f45e3eb5599

  • SHA256

    667b5fc2edfd84a68093d717396be7fd323c11df63512cde3f4cefe8c2032a64

  • SHA512

    0ada356ce7a322dbc12e472899ecb66d071fc5ebba519bcfe121227650c2097f0fb53bde52ae34185586ba824decfdb4456da8bc86d4b52dcff38e868a338c1b

Score
10/10
netwalkerransomwarespywarestealer

Malware Config

Extracted

Path

C:\Program Files (x86)\Microsoft Office\MEDIA\OFFICE14\1033\037D8D-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .037d8d -- 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_037d8d: YEUxXhuRAqNolLJF4i3zPtxNanNykBKnfDQT9BqcMuhvOcAI/Z bZcuDtcwlp5wnlrer0TUq3SuTWOqpVkDox99jGb/d6M5dMxS9i HDVZtAxG2E6M68KuG4z9J8A0tpjIe5u9TmKudBBMaSKXxG+7U8 nt2Izn+EYb7xExLfpJ3uOw43qt0L0DZkHxFYJMbDS9tCspE2QF wmUeoFhXvZJa6efifSsCecvIGz1BuwvcFlxJrAtyU57v569I09 OI1LZF0h83F7xPJKD+PCl2nQjC2fhYhXLePa3Zrw==}
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 2 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.

    spywarestealer
  • Drops file in Program Files directory 64 IoCs
  • Interacts with shadow copies 2 TTPs 1 IoCs

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

    ransomware
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 5 IoCs
  • Suspicious use of WriteProcessMemory 4 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\667b5fc2edfd84a68093d717396be7fd323c11df63512cde3f4cefe8c2032a64.exe
    "C:\Users\Admin\AppData\Local\Temp\667b5fc2edfd84a68093d717396be7fd323c11df63512cde3f4cefe8c2032a64.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:1564
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:592
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:5736

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • memory/1564-54-0x00000000766D1000-0x00000000766D3000-memory.dmp

    Filesize

    8KB

    Download