Overview

overview

10

Static

static

10

4952e354ce...f0.exe

windows7_x64

10

4952e354ce...f0.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    235s
  • max time network
    247s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    01-02-2022 01:31

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General

  • Target

    4952e354ceccdaa13f6e7c14e287eca13433906a00e7c4dffd96c940327f74f0.exe

  • Size

    69KB

  • MD5

    d8298ad52aad8be92f2850cd1a8d2315

  • SHA1

    db4934e34f8ec1568b8cce7708c99d554aca55e9

  • SHA256

    4952e354ceccdaa13f6e7c14e287eca13433906a00e7c4dffd96c940327f74f0

  • SHA512

    17e2cf682ac6ce4c55addab00f8bbc5aba7799478523abb45db2eef88fec5f2418a8e250a0d36184f57354ecc3d8875fdc48073dc8fc3c0d711162b36c6e3080

Score
10/10
netwalkerransomwarespywarestealer

Malware Config

Extracted

Path

C:\Users\Admin\AppData\Local\ConnectedDevicesPlatform\B196C2-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .b196c2 -- 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. Additionally, your data may have been stolen and if you do not cooperate with us, it will become publicly available on our blog. -- 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_b196c2: oa2mVX/SwYJzlwJrPdcnje/+q0yYyFsKhDuLZvtZun/i+iSU4Q 6OZ4HAos+2Z+UpAGXC/aoAuGs+Wap8REA7pE3w5aXeYQhksEsr MBb7MEsZ7NRlhYCzrHkM3P45f7REHF5zCWw+CcTL2vRIGpa9+Y eox+a1TbAS54LFmUSamL6cyHs6dnAEc21YM6t+NzivAg+xUtSB 9Vvyq883UIDQVxw3WvTOyWKELaEh+kW6XRnN9XMc2tWZ1A8Jh/ O5tYwTyZ1JJe2jwXCMZORemkvZkQmcSVOacECXDA==}
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 3 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 2 IoCs
  • Suspicious use of WriteProcessMemory 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\4952e354ceccdaa13f6e7c14e287eca13433906a00e7c4dffd96c940327f74f0.exe
    "C:\Users\Admin\AppData\Local\Temp\4952e354ceccdaa13f6e7c14e287eca13433906a00e7c4dffd96c940327f74f0.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:1356
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:3720
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
      PID:9048
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
        PID:9112

      Network

      MITRE ATT&CK Matrix ATT&CK v6

      Initial Access

      Execution

      Persistence

      Privilege Escalation

      Defense Evasion

      File Deletion

      2
      T1107

      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