Overview

overview

10

Static

static

3

Factuur4388.PDF.exe

windows7-x64

10

Factuur4388.PDF.exe

windows10-2004-x64

7

Sharing

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General

  • Target
    a3bf1b20a4e1672fc4dd3dda18b0cc40_JaffaCakes118
  • Size 705KB
  • Sample241126-ya5yyswlcy
  • SHA256 b100643f39c3bf67b08192f2e8004c01002b8a7710c26147e9403d23face91c7
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
ctblockerdefense_evasiondiscoveryexecutionimpactransomware

Malware Config

Extracted

Path

  • C:\ProgramData\eevbedb.html

Ransom Note
  • Your documents, photos, databases and other important files have been encrypted with strongest encryption and unique key, generated for this computer. Private decryption key is stored on a secret Internet server and nobody can decrypt your files until you pay and obtain the private key. If you see the main locker window, follow the instructions on the locker. Overwise, it's seems that you or your antivirus deleted the locker program. Now you have the last chance to decrypt your files. Open http://jssestaew3e7ao3q.onion.cab or http://jssestaew3e7ao3q.tor2web.org in your browser. They are public gates to the secret server. If you have problems with gates, use direct connection: 1. Download Tor Browser from http://torproject.org. 2. In the Tor Browser open the http://jssestaew3e7ao3q.onion Note that this server is available via Tor Browser only. Retry in 1 hour if site is not reachable. Copy and paste the following public key in the input form on server. Avoid missprints. Follow the instructions on the server. The list of your encrypted files: Path File
URLs

  • http://jssestaew3e7ao3q.onion.cab

  • http://jssestaew3e7ao3q.tor2web.org

  • http://jssestaew3e7ao3q.onion

Targets

    • Target
      Factuur4388.PDF.exe
    • Size 772KB
    • SHA256 f9ae18f90c502fc22c826eb8322a907fa6ddd2b38fdc1b10353d123b8910e674
    • MD5 SHA1 SHA512 SSDEEP
    Score
    10/10
    ctblockerdefense_evasiondiscoveryexecutionimpactransomware

    • CTB-Locker

      Ransomware family which uses Tor to hide its C2 communications.

      ransomwarectblocker

    • Ctblocker family

      ctblocker

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomwaredefense_evasionimpactexecution

    • Checks computer location settings

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

    • Executes dropped EXE

    • Loads dropped DLL

    • Drops desktop.ini file(s)

    • Enumerates connected drives

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

    • Drops file in System32 directory

    • Sets desktop wallpaper using registry

      ransomware

    • Suspicious use of SetThreadContext

    behavioral1behavioral2

MITRE ATT&CK Enterprise v15

Tasks