Overview

overview

10

Static

static

3

eaef25ab1f...18.exe

windows7-x64

10

eaef25ab1f...18.exe

windows10-2004-x64

10

Analysis

  • max time kernel
    118s
  • max time network
    119s
  • platform
    windows7_x64
  • resource
    win7-20240903-en
  • resource tags

    arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
  • submitted
    19-09-2024 08:22

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General

  • Target

    eaef25ab1f59492ffc735a386294b69f_JaffaCakes118.exe

  • Size

    65KB

  • MD5

    eaef25ab1f59492ffc735a386294b69f

  • SHA1

    76cc795c39cc19465c24825dc5ebafd7f944ea7e

  • SHA256

    4f7bdda79e389d6660fca8e2a90a175307a7f615fa7673b10ee820d9300b5c60

  • SHA512

    a812186ff05baa0c194abc2b4becc145f312b885068773f994658ecac2bfd8e1c85acdfe3774728541ed966f46a872d19fee17a53cc07f3f8e2e94be0cdef1c4

  • SSDEEP

    1536:kxZab6DtoaWM7pgUJJooLrIZadXRM0CFU6InWU1dil:3GDtDD7prbooLrWaPM0hWai

Score
10/10
netwalkerdiscoveryransomwarespywarestealer

Malware Config

Extracted

Path

C:\Program Files (x86)\Common Files\Adobe\Updater6\EB5DDA-Readme.txt

Family

netwalker

Ransom Note
Hi! Your files are encrypted. All encrypted files for this computer has extension: .eb5dda -- 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, you must know that your sensitive data has been stolen by our analyst experts and if you choose to no cooperate with us, you are exposing yourself to huge penalties with lawsuits and government if we both don't find an agreement. We have seen it before; cases with multi million costs in fines and lawsuits, not to mention the company reputation and loosing clients trust and the medias calling non-stop for answers. Come chat with us and you could be surprised on how fast we both can find an agreement without getting this incident public. -- 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_eb5dda: iot96hxwvgwLdZ+mxnDf6Zhfg93TlniQSl4MHAahO7L5BYYtg4 hdTYwA9oZ8v6WnzVvZzF6jcIYtI5RC/NPuugTyFHQV9DUxurP5 y4TaXes/6o/wkuwFZ2HvC4IqnRIdDpVtKd5qnHlgkjhIV84Bwx U4Cv4MjHfIN2C5ckWceTIjSigCFnZtZQSUFyHI2AP1X85tG0W4 USEAZojEhtYKwu460UKdXSGtyQoeBTQfTVehEaL3OBGMIC1tpN 9Sw1kVBXC8tayObtgzlHRTVHFJ7DHBQbYqJbHYHA==}
URLs

http://pb36hu4spl6cyjdfhing7h3pw6dhpk32ifemawkujj4gp33ejzdq3did.onion

http://rnfdsgm6wb6j6su5txkekw4u4y47kp2eatvu7d6xhyn5cs4lt4pdrqqd.onion

Signatures

  • Netwalker Ransomware

    Ransomware family with multiple versions. Also known as MailTo.

    ransomwarenetwalker
  • Renames multiple (7408) files with added filename extension

    This suggests ransomware activity of encrypting all the files on the system.

    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
  • System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

    Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

    discovery
  • Kills process with taskkill 1 IoCs
    evasion
  • Suspicious behavior: EnumeratesProcesses 64 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 12 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\eaef25ab1f59492ffc735a386294b69f_JaffaCakes118.exe
    "C:\Users\Admin\AppData\Local\Temp\eaef25ab1f59492ffc735a386294b69f_JaffaCakes118.exe"
    1⤵
    • Drops file in Program Files directory
    • System Location Discovery: System Language Discovery
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1620
    • C:\Windows\SysWOW64\notepad.exe
      C:\Windows\system32\notepad.exe "C:\Users\Admin\Desktop\EB5DDA-Readme.txt"
      2⤵
      • System Location Discovery: System Language Discovery
      PID:5868
    • C:\Windows\SysWOW64\cmd.exe
      cmd /c "C:\Users\Admin\AppData\Local\Temp\F1AF.tmp.bat"
      2⤵
      • Deletes itself
      • System Location Discovery: System Language Discovery
      • Suspicious use of WriteProcessMemory
      PID:4296
      • C:\Windows\SysWOW64\taskkill.exe
        taskkill /F /PID 1620
        3⤵
        • System Location Discovery: System Language Discovery
        • Kills process with taskkill
        • Suspicious use of AdjustPrivilegeToken
        PID:8120

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

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Downloads

  • C:\Program Files (x86)\Common Files\Adobe\Updater6\EB5DDA-Readme.txt
    Filesize

    2KB

    MD5

    0b496c1aff32a5ad4f45173c03b145a8

    SHA1

    2a7c12b98e9faee4d9aae9d2071c41465e9b4b6d

    SHA256

    a60479f068b02bcc78bf43dba4cac97e4d76a60e2c0ee6b3feed2bc3631ba1dc

    SHA512

    45f424f53970ae834a8cff057a5fce0fe34dc31c3dae426c9c5f19bbf79868ebb8c03f6d1d8d1523d77482b8604034a4523f919310579a96237d9f8f26379f2d

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  • C:\Users\Admin\AppData\Local\Temp\F1AF.tmp.bat
    Filesize

    123B

    MD5

    5c4b85c2d7d3f954fcff6ef198b554a1

    SHA1

    ccfb49734acb01e7056879d372c40ecec127ee81

    SHA256

    9c31dffec252410f8b4e8f049eb19a25a3bc8ea0a7feb5a8b1aa46cd8346e1df

    SHA512

    f13b493317096af0b952fb50a888fea03ace25dfd01de92f15c0ecf0f955a2e773ead7d72f857c285b837731fe531ca78cb44fb917e5edc79d9ddba228049a8f

    Download Submit