General

  • Target
    nnll.zip
  • Size 407KB
  • Sample230915-hyserscb44
  • SHA256 55e93dfebde154676d9f693e2573060366412110e6a7f05088c83b3f40e9a6c1
  • MD5 SHA1 SHA512 SSDEEP

Malware Config

Extracted

Path
  • C:\Users\Admin\Downloads\_Readme.txt

Ransom Note
  • ATTENTION! Don’t worry, you can return all your files! All your files like photos, databases, documents and other important are encrypted with strongest encryption and unique key. The only method of recovering files is to purchase decrypt tool and unique key for you. This software will decrypt all your encrypted files. What guarantees you have? You can send one of your encrypted file from your PC and we decrypt it for free. But we can decrypt only 1 file for free. File must not contain valuable information. You can get and look video overview decrypt tool: https://we.tl/t-O0PCajl3M8 Price of private key and decrypt software is $980. Discount 50% available if you contact us first 72 hours, that’s price for you is $490. Please note that you’ll never restore your data without payment. Check your e-mail “Spam” or “Junk” folder if you don’t get answer more than 6 hours. To get this software you need write on our e-mail: [email protected] Reserve e-mail address to contact us: [email protected] Your personal ID: MiSaTZHPPplfJNOCRxgwTxrFECe0aRRHv1dkGY1h
URLs
  • https://we.tl/t-O0PCajl3M8

Targets

    • Target
      decryp.exe
    • Size 18KB
    • SHA256 24d8b33ffceaa0cee17a6258d39be1317672fc481c889822cf38963e3eb488c2
    • MD5 SHA1 SHA512 SSDEEP
    Score
    8/10
    • Modifies Windows Firewall

    • Checks computer location settings

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

    • Target
      nnll.exe
    • Size 917KB
    • SHA256 dd595da7ed62a415d319d4903c62312bf52e10603b54c2051b45c6ca955606a3
    • MD5 SHA1 SHA512 SSDEEP
    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

    • Disables Task Manager via registry modification

    • Modifies Windows Firewall

    • Checks computer location settings

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

    • Loads dropped DLL

    • Adds Run key to start application

    • Legitimate hosting services abused for malware hosting/C2

MITRE ATT&CK Enterprise v15

Tasks