Analysis

  • max time kernel
    24s
  • max time network
    120s
  • platform
    windows10_x64
  • resource
    win10v20210410
  • submitted
    30-04-2021 17:57

General

  • Target

    plast.exe

  • Size

    79KB

  • MD5

    cafe07d8c34108007372bd8df42d9ef9

  • SHA1

    f137ab4384d071ab51c746f9de976aeea81fb2e6

  • SHA256

    6103e26f6f9d5fd895d9c06e1f5e141ce74d8ebda999cda6a58a4393de5ed094

  • SHA512

    acf2184efdb981e164028c0caf7fe5173db9f17a035c9d4c0c1cd78dfb819312b34f653ef83c718aa2b73646824cbed2d29d2edc6b2f21c9329b890fecfea90f

Score
10/10

Malware Config

Extracted

Path

C:\How To Restore Your Files.txt

Ransom Note
############## [ babuk ransomware greetings you ] ############## Introduction ---------------------------------------------- Congratulations! If you see this note, your company've been randomly chosen for security audit and your company haven't passed it. Unfortunately your servers are encrypted, backups are encrtypted too or deleted. Our enctyption algorythms are strong and it's impossible to decrypt your stuff without our help. Only one method to restore all your network and systems is - to buy our universal decryption software. Follow simple steps that discribed down below and your data will be saved. In case you ignore this situation, the consequences could me much serious, than you can imagine. Guarantees ---------------------------------------------- The hack and system encryption wasn't compromised by your competitors or any other 3rd party, this is just and only our initiative and only thing we interested is profit. Accurding the previous sentence We are very much value of our reputation. If we do not do our work and liabilities, nobody will pay us. This is not in our interests. All our decryption software is perfectly tested and will decrypt your data. We guarantee full support and help through the all decryption process. As the proof of our abilities and honesty, we can decrypt few small files for free, check the link provided and ask any questions. Data leakage ---------------------------------------------- We have copied some quantity of data from your servers. Check those proofs and estimate the seriousness of consequences which can occur in case you ignore us: http://wavbeudogz6byhnardd2lkp2jafims3j7tj6k6qnywchn2csngvtffqd.onion/blog/d5c28d496f8ae8618894df9b4e142cf3e21ac9fc204f5ebb9ce0392e7bd43d89/ This link is private and only you can see it. Use tor browser to open link. Ignoring the interaction with us brings you the publishing your data in our public blog http://wavbeudogz6byhnardd2lkp2jafims3j7tj6k6qnywchn2csngvtffqd.onion/ Contact ---------------------------------------------- 1) Download tor browser: https://www.torproject.org/download/ 2) Open it 3) Follow this link in tor browser: http://xrf3jd6k3eqcuhpewtfm52bt7tptc2swiskphdoa4tu4d2jl44osorad.onion/aaa778e6648e85918b5eac8fd16d80521957ba67ba61673f526398d33b702228 * 6 simple steps do minimize harm from ransomware. ----------------------------------------------------------------------------------------------------------------- Thousands of companies around the world are struggling on ransomware these days, and the most of companies are making the same mistakes again and again. Let’s figure out how to minimize harm and do not be a dumb and pathetic donkey which will make fun for journalists and so on.. 1. If you see small fella malicious .exe file never load it to virustotal.com or any other virus researching website. Otherwise the info about the hack is not a secret anymore. The fact that your company is under ransomware attack is already known by filthy predators data security agents who will post in their pity twitters the fresh known news “OMG ANOTHER RANSOMWARE NOW IT’S “Your company name LLC!!!!! We are all gonna die aaaaaa halp” 2. No any public announcements about the hack or data leakage. And do not applicate to law enforcement. If you commit this actions, more serious consequences can occur and you pay much more than a ransom amount. Law structures like GDPR in this case can oblige you to pay huge fine. 3. As soon as you see your network compromised, follow the link inside any note and follow instructions. 4. Calm your employees. Explain them that this is a drill. And you test your network security systems. 5. If you decide to hire the data recovery company, obligate them to do not inform anyone and any third party about details of the attack. We strongly do not recommend to cooperate with data recovery company, because they do absolutely nothing that you can do by yourself and take money for it. all communications with hackers could be conducted by your it department indipendently without any extra payments. 6. Do not try to decrypt your data via 3rd party software. Most of ransomware use strong encryption algorthm and you can harm your files by using 3rd party decryption software.
URLs

http://wavbeudogz6byhnardd2lkp2jafims3j7tj6k6qnywchn2csngvtffqd.onion/blog/d5c28d496f8ae8618894df9b4e142cf3e21ac9fc204f5ebb9ce0392e7bd43d89/

http://wavbeudogz6byhnardd2lkp2jafims3j7tj6k6qnywchn2csngvtffqd.onion/

http://xrf3jd6k3eqcuhpewtfm52bt7tptc2swiskphdoa4tu4d2jl44osorad.onion/aaa778e6648e85918b5eac8fd16d80521957ba67ba61673f526398d33b702228

Signatures

  • Babuk Locker

    RaaS first seen in 2021 initially called Vasa Locker.

  • Deletes shadow copies 2 TTPs

    Ransomware often targets backup files to inhibit system recovery.

  • Modifies extensions of user files 15 IoCs

    Ransomware generally changes the extension on encrypted files.

  • Enumerates connected drives 3 TTPs 24 IoCs

    Attempts to read the root path of hard drives other than the default C: drive.

  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Interacts with shadow copies 2 TTPs 2 IoCs

    Shadow copies are often targeted by ransomware to inhibit system recovery.

  • Suspicious behavior: EnumeratesProcesses 2 IoCs
  • Suspicious use of AdjustPrivilegeToken 3 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\plast.exe
    "C:\Users\Admin\AppData\Local\Temp\plast.exe"
    1⤵
    • Modifies extensions of user files
    • Enumerates connected drives
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of WriteProcessMemory
    PID:1892
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:1116
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:1456
    • C:\Windows\System32\cmd.exe
      "C:\Windows\System32\cmd.exe" /c vssadmin.exe delete shadows /all /quiet
      2⤵
      • Suspicious use of WriteProcessMemory
      PID:3600
      • C:\Windows\system32\vssadmin.exe
        vssadmin.exe delete shadows /all /quiet
        3⤵
        • Interacts with shadow copies
        PID:2148
  • C:\Windows\system32\vssvc.exe
    C:\Windows\system32\vssvc.exe
    1⤵
    • Suspicious use of AdjustPrivilegeToken
    PID:2812

Network

MITRE ATT&CK Enterprise v6

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Downloads

  • memory/1116-114-0x0000000000000000-mapping.dmp

  • memory/1456-115-0x0000000000000000-mapping.dmp

  • memory/2148-117-0x0000000000000000-mapping.dmp

  • memory/3600-116-0x0000000000000000-mapping.dmp