Resubmissions

24/02/2024, 15:44

240224-s6pzqafh5310

24/02/2024, 14:06

240224-relmjsdh4510

24/02/2024, 11:48

240224-nyvssabe4w3

General

  • Target
    MalwareCollection-master.zip
  • Size 57.3MB
  • Sample240224-relmjsdh45
  • SHA256 c6a916c33096cd488ca57c28863c433cf5279128aa50ea156761bab6444f4937
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Path
  • C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\Info.hta

Ransom Note
  • All your files have been encrypted! All your files have been encrypted due to a security problem with your PC. If you want to restore them, write us to the e-mail [email protected] Write this ID in the title of your message F5048EBE In case of no answer in 24 hours write us to theese e-mails: [email protected] You have to pay for decryption in Bitcoins. The price depends on how fast you write to us. After payment we will send you the decryption tool that will decrypt all your files. Free decryption as guarantee Before paying you can send us up to 1 file for free decryption. The total size of files must be less than 1Mb (non archived), and files should not contain valuable information. (databases,backups, large excel sheets, etc.) How to obtain Bitcoins The easiest way to buy bitcoins is LocalBitcoins site. You have to register, click 'Buy bitcoins', and select the seller by payment method and price. https://localbitcoins.com/buy_bitcoins Also you can find other places to buy Bitcoins and beginners guide here: http://www.coindesk.com/information/how-can-i-buy-bitcoins/ Attention! Do not rename encrypted files. Do not try to decrypt your data using third party software, it may cause permanent data loss. Decryption of your files with the help of third parties may cause increased price (they add their fee to our) or you can become a victim of a scam.

Targets

    • Target
      Ransomware.7ev3n.exe
    • Size 315KB
    • SHA256 7d373ccb96d1dbb1856ef31afa87c2112a0c1795a796ab01cb154700288afec5
    • MD5 SHA1 SHA512 SSDEEP
    • Target
      Ransomware.BadRabbit.exe
    • Size 431KB
    • SHA256 630325cac09ac3fab908f903e3b00d0dadd5fdaa0875ed8496fcbb97a558d0da
    • MD5 SHA1 SHA512 SSDEEP
    • BadRabbit

      Ransomware family discovered in late 2017, mainly targeting Russia and Ukraine.

    • Mimikatz

      mimikatz is an open source tool to dump credentials on Windows.

    • mimikatz is an open source tool to dump credentials on Windows

    • Blocklisted process makes network request

    • Executes dropped EXE

    • Loads dropped DLL

    • Target
      Ransomware.CoronaVirus.exe
    • Size 1.0MB
    • SHA256 dddf7894b2e6aafa1903384759d68455c3a4a8348a7e2da3bd272555eba9bec0
    • MD5 SHA1 SHA512 SSDEEP
    • Dharma

      Dharma is a ransomware that uses security software installation to hide malicious activities.

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Renames multiple (494) files with added filename extension

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

    • Checks computer location settings

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

    • Drops startup file

    • Reads user/profile data of web browsers

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

    • Adds Run key to start application

    • Drops desktop.ini file(s)

    • Drops file in System32 directory

    • Target
      Ransomware.CryptoLocker.exe
    • Size 338KB
    • SHA256 d765e722e295969c0a5c2d90f549db8b89ab617900bf4698db41c7cdad993bb9
    • MD5 SHA1 SHA512 SSDEEP

MITRE ATT&CK Enterprise v15

Tasks