Overview

overview

10

Static

static

10

2520b15068...a8.exe

windows7-x64

10

2520b15068...a8.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    151s
  • max time network
    48s
  • platform
    windows7_x64
  • resource
    win7-20220901-en
  • resource tags

    arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
  • submitted
    12-10-2022 09:56

Sharing

Copy URL
Twitter E-mail
Report Analysis Logs

General

  • Target

    2520b15068fa108c947db179377c6b462f2c4f47037168bf8c69fcb668cb11a8.exe

  • Size

    69KB

  • MD5

    80372de850597bd9e7e021a94f13f0a1

  • SHA1

    037db820c8dee94ae25a439b758a2b89f527cbb4

  • SHA256

    2520b15068fa108c947db179377c6b462f2c4f47037168bf8c69fcb668cb11a8

  • SHA512

    f43db3569ac60d6ed55b9a3a24dcb459e14b0bd944e9405a8cb2bfb686eaeff31c82ffcd6c477d6a6affe9014ae8ed7d8af174e8ceebbcf00b64ad293901a77a

  • SSDEEP

    1536:juCWRxL7hbUiQfovecnXUU+hhOZuIWiFp+ZfaBZebC33O+Pd71vb:KCWf7VJQfmeMXvkhOZu1iFBBZebC3F7t

Score
10/10
netwalkerransomwarespywarestealer

Malware Config

Extracted

Path

C:\ProgramData\Microsoft\User Account Pictures\F9DC6D-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .f9dc6d -- 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_f9dc6d: pC1UYCFS4RWcVhtM1rCkOApzEgrw0GBwP74kFRpd7m2AUNf725 LueymLv8PVYchtxvcZluUm6PPIGnsM9lZBE3L3piPzw2R0Ag4e DX1udgBTP0Kds4F7kZdJAvCigxhlmc7X+dbS8iJdI9TTHdMzUd A0FnfR8id/tiwZdmIlKZmDLBjnJOWAyUPWT52SPTeBd2/qjOES 5O3rXlfVA048tVc3YgUT5ARBN0N0gjs6WQ+0UORfhOXCb0gaeo f+nLoJ38YyGDW9Q6dkmkjfmwbfVgzgVA/Y/7nP1A==}
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 18 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\2520b15068fa108c947db179377c6b462f2c4f47037168bf8c69fcb668cb11a8.exe
    "C:\Users\Admin\AppData\Local\Temp\2520b15068fa108c947db179377c6b462f2c4f47037168bf8c69fcb668cb11a8.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:2032
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:1892
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:7560

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads

  • memory/2032-54-0x0000000075A71000-0x0000000075A73000-memory.dmp

    Filesize

    8KB

    Download

  • memory/2032-56-0x0000000011A40000-0x0000000011ABD000-memory.dmp

    Filesize

    500KB

    Download

  • memory/2032-57-0x0000000005C80000-0x0000000005CFD000-memory.dmp

    Filesize

    500KB

    Download