Overview

overview

10

Static

static

10

488261e1e0...7d.exe

windows7_x64

10

488261e1e0...7d.exe

windows10-2004_x64

10

Analysis

  • max time kernel
    4294179s
  • max time network
    120s
  • platform
    windows7_x64
  • resource
    win7-20220223-en
  • submitted
    06-03-2022 00:33

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General

  • Target

    488261e1e0793e6830f68c572db7e229af1d9403bbc8e61b9da707b1b63a137d.exe

  • Size

    69KB

  • MD5

    3229e2489dde524195cf0ccbbf5f7d40

  • SHA1

    a257fc0b117fb9e0a6df128213e11de5cee21129

  • SHA256

    488261e1e0793e6830f68c572db7e229af1d9403bbc8e61b9da707b1b63a137d

  • SHA512

    d719fcf974a9304154daf95f0c80805b9a720a1db1289aa4fd189494cb0c29820a1b999d26fb38378d3a47602b26ff8375189ed9586a9c94c19fae0f4e0c650e

Score
10/10
netwalkerransomwarespywarestealer

Malware Config

Extracted

Path

C:\Users\Admin\Desktop\5F3197-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted by Netwalker. All encrypted files for this computer has extension: .5f3197 -- 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_5f3197: kEhp4fyFy50BYadtakFZD2pGxZSV9Oa6ObknO0bhxg8r6+p63S sN0J/CZ5Nr7J2suzFNhPHbAshB84KOeGgGbLWALgOtsxNQgw2l dLF0Ato3P2PlnzrSsSr3S+qMFEMw9vxhLtvoGukZbVqdBvZIRf T2myKC8IP1cfwxi9AsvA/DVoPzJ2qrewGpx0T4beDzqPkNDDhS HGw8tZ9tyjxLbQq6iLQ8AwUu4Yk4/YQXDyPpQKcnASBcox2CIc vOJ6XkxP6YL7kAi21jJC2R2WRLEAUIXA+GNRdSkw==}
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 4 IoCs

    Ransomware generally changes the extension on encrypted files.

    ransomware
  • Deletes itself 1 IoCs
  • 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
  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 6 IoCs
  • Suspicious use of WriteProcessMemory 16 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\488261e1e0793e6830f68c572db7e229af1d9403bbc8e61b9da707b1b63a137d.exe
    "C:\Users\Admin\AppData\Local\Temp\488261e1e0793e6830f68c572db7e229af1d9403bbc8e61b9da707b1b63a137d.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:1104
    • C:\Windows\system32\vssadmin.exe
      C:\Windows\system32\vssadmin.exe delete shadows /all /quiet
      2⤵
      • Interacts with shadow copies
      PID:516
    • C:\Windows\SysWOW64\notepad.exe
      C:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\5F3197-Readme.txt"
      2⤵
        PID:1548
      • C:\Windows\SysWOW64\cmd.exe
        cmd /c "C:\Users\Admin\AppData\Local\Temp\1DAE.tmp.bat"
        2⤵
        • Deletes itself
        • Suspicious use of WriteProcessMemory
        PID:3408
        • C:\Windows\SysWOW64\taskkill.exe
          taskkill /F /PID 1104
          3⤵
          • Kills process with taskkill
          • Suspicious use of AdjustPrivilegeToken
          PID:3240
    • C:\Windows\system32\vssvc.exe
      C:\Windows\system32\vssvc.exe
      1⤵
      • Suspicious use of AdjustPrivilegeToken
      PID:5780

    Network

    MITRE ATT&CK Enterprise v6

    Replay Monitor

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    Downloads

    • memory/1104-54-0x0000000075CC1000-0x0000000075CC3000-memory.dmp

      Filesize

      8KB

      Download