Overview

overview

10

Static

static

10

55cdf7ea2d...bb.exe

windows7_x64

9

55cdf7ea2d...bb.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    170s
  • max time network
    169s
  • platform
    windows10-2004_x64
  • resource
    win10v2004-en-20220112
  • submitted
    01-02-2022 01:31

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General

  • Target

    55cdf7ea2da073657b79bed6ac128f61c20519a41715b1675c509face60fb9bb.exe

  • Size

    69KB

  • MD5

    a2de690489ee5d8b3cd06fdea0a63670

  • SHA1

    5f94ad2d365ae9c233b3f9ef68470c03e45aba64

  • SHA256

    55cdf7ea2da073657b79bed6ac128f61c20519a41715b1675c509face60fb9bb

  • SHA512

    0fb16a63055cc5cd13464ce3d414f7efe8c41abe4da98614629d2af2116ea9f2742edaaf7ca77ef33a26b8e0552e9bc149edbec7029b87c24fb77cd2d674a476

Score
10/10
netwalkerransomwarespywarestealer

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\BAA3E3-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .baa3e3 -- 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_baa3e3: r2TXKfdI1USKvAR6meYoexIhHCs1LwaP4ZX8YzSDuYgtNrtLea nN/AwFa1VlHfE4Vdx7Pbf1MyQBSvEWbGX/2b/dkx49iv8EEYDe TVWa9lSqbjuDuBFvAq6QT6JBuPx4pPkJyxmbs4ltW78a3aY1iL 4N142lcVhm7F3Lh/4JYrqq1nfpNgNz56N3/+ts0tvvnKgdrOlH i0QrVqHXLWCsQ1Gf+Ta2V6tNEt+iS5xooSNT7IWf4o0M3STFfd 5XHC0PJk/zbryj1Tlryk5iChqInqvvjcdWjI6USg==}
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 6 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\55cdf7ea2da073657b79bed6ac128f61c20519a41715b1675c509face60fb9bb.exe
    "C:\Users\Admin\AppData\Local\Temp\55cdf7ea2da073657b79bed6ac128f61c20519a41715b1675c509face60fb9bb.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:616
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:2076
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
      PID:6104

    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