Overview

overview

10

Static

static

10

5d869c0e07...12.exe

windows7_x64

10

5d869c0e07...12.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    154s
  • max time network
    108s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-20220414-en
  • submitted
    03-06-2022 13:18

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General

  • Target

    5d869c0e077596bf0834f08dce062af1477bf09c8f6aa0a45d6a080478e45512.exe

  • Size

    69KB

  • MD5

    c0bf14556a1563cea82f34b0faf70822

  • SHA1

    e6e232fa7cc93f11bf63487066adccd02006f214

  • SHA256

    5d869c0e077596bf0834f08dce062af1477bf09c8f6aa0a45d6a080478e45512

  • SHA512

    0b23ec04e88a5152ed3fbd2d4927f543ea756c269ea06d93daacdd57a5a88bafbb7fb556764bc4a1532dfe2003ba4ad191fc259121d3ce685d76489d7c4afc42

Score
10/10
netwalkerransomwarespywarestealer

Malware Config

Extracted

Path

C:\E43762-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .e43762 -- 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_e43762: akvcJXB0mO/xrGtzPc4qYCnPKeg3EQi305JfBiOm+vhoCmH+X/ a0tLauf2pVIHdTK0T1Bjljzq7WdszzvLwsnQt21Tz3V3B1Np6R qriUPvRYq3RdWY39jc5zi6zK5HSWo7upUNIPC4+8OvVmDDCuUE jTS1pWqjvqiIAREYHmqIMTLaQMaDmgEiFPsAhPzVWFgyeWJN+p faMojhzh/tZ9qPLgKdInWA+C4KlEoHVdf1PJOZQQ/9l6RzB0TG D8HNXkFhMIsBjhNdqh91PX9cEGFAjYgvFOyd0aCA==}
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 1 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 2 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\5d869c0e077596bf0834f08dce062af1477bf09c8f6aa0a45d6a080478e45512.exe
    "C:\Users\Admin\AppData\Local\Temp\5d869c0e077596bf0834f08dce062af1477bf09c8f6aa0a45d6a080478e45512.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:4044
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:3868
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:1860

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

  • memory/3868-130-0x0000000000000000-mapping.dmp
    Download