Resubmissions

25/01/2024, 01:57

240125-cdn9qadge610

24/01/2024, 15:56

240124-tdhwdadfb510

24/01/2024, 11:55

240124-n3eblahecn10

General

  • Target
    cb7c19b49efd25a4314129c9024c8e84ad9dd8acb45658ecf43c2d1fab775ca6
  • Size 3.4MB
  • Sample240124-n3eblahecn
  • SHA256 cb7c19b49efd25a4314129c9024c8e84ad9dd8acb45658ecf43c2d1fab775ca6
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Path
  • C:\Users\Admin\Documents\PLS_READ_ME.txt

Ransom Note
  • Oops, what happend? All of your files have been encrypted Your computer was infected with Frivinho Ransomware. Your files have been encrypted and you won't be able to decrypt them without our help. What can I do to get my files back? You can buy our special decryption software, this software will allow you to recover all of your data and remove the ransomware from your computer.The price for the software is $1,500. Payment can be made in Bitcoin or Robux. How do I pay, where do I get Bitcoin? Purchasing Bitcoin varies from country to country, you are best advised to do a quick google search yourself to find out how to buy Bitcoin. Many of our customers have reported these sites to be fast and reliable: Coinmama - hxxps://www.coinmama.com Bitpanda - hxxps://www.bitpanda.com Payment informationAmount: 0.1473766 BTC Check this pastebin to get the my newest Bitcoin Adress: https://pastebin.com/raw/wZnisRDV And by cheking the pastebin, you can see more information about how you can pay.
URLs
  • https://pastebin.com/raw/wZnisRDV

Targets

    • Target
      cb7c19b49efd25a4314129c9024c8e84ad9dd8acb45658ecf43c2d1fab775ca6
    • Size 3.4MB
    • SHA256 cb7c19b49efd25a4314129c9024c8e84ad9dd8acb45658ecf43c2d1fab775ca6
    • MD5 SHA1 SHA512 SSDEEP
    • Chaos

      Ransomware family first seen in June 2021.

    • Chaos Ransomware

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Modifies boot configuration data using bcdedit

    • Renames multiple (186) files with added filename extension

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

    • Deletes backup catalog

      Uses wbadmin.exe to inhibit system recovery.

    • Checks computer location settings

      Looks up country code configured in the registry, likely geofence.

    • Drops startup file

    • Executes dropped EXE

    • Reads user/profile data of web browsers

      Infostealers often target stored browser data, which can include saved credentials etc.

    • Drops desktop.ini file(s)

    • Sets desktop wallpaper using registry

MITRE ATT&CK Enterprise v15

Tasks