ctblocker | 597ae8a86df361a4d18a381b80b3be8968f3d8fc187a48cddbb27653217bf674

General

Target

VirusShare_a5d0e995d43232bd4b3d73f8899b7ef0
Size

662KB
Sample

240205-jztjwsdbgq
MD5

a5d0e995d43232bd4b3d73f8899b7ef0
SHA1

46e06085c542f69ca2a78bba9f4eaa0ad77b1713
SHA256

597ae8a86df361a4d18a381b80b3be8968f3d8fc187a48cddbb27653217bf674
SHA512

c65757fc305586930c1cc5dd0a712b3a071fdd89b357328a28fea208dcdd67c9717b7de4678e525652a324d976b2588105bda82575d2cb7b7682b6730e9c4fdb
SSDEEP

12288:vKPvdIQ/slCcdrN8VfeP/hUmQ2jqh+aCKpQKEskUjeWhjZrwPqQRc:a6OslWVfeP/s2j8+aCGHFZnOc

Score

10^/10

ctblocker ransomware

Malware Config

Extracted

Path

C:\ProgramData\ulbiyui.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
  
  VirusShare_a5d0e995d43232bd4b3d73f8899b7ef0
- Size
  
  662KB
- MD5
  
  a5d0e995d43232bd4b3d73f8899b7ef0
- SHA1
  
  46e06085c542f69ca2a78bba9f4eaa0ad77b1713
- SHA256
  
  597ae8a86df361a4d18a381b80b3be8968f3d8fc187a48cddbb27653217bf674
- SHA512
  
  c65757fc305586930c1cc5dd0a712b3a071fdd89b357328a28fea208dcdd67c9717b7de4678e525652a324d976b2588105bda82575d2cb7b7682b6730e9c4fdb
- SSDEEP
  
  12288:vKPvdIQ/slCcdrN8VfeP/hUmQ2jqh+aCKpQKEskUjeWhjZrwPqQRc:a6OslWVfeP/s2j8+aCGHFZnOc
Score

10^/10

ctblocker ransomware
- CTB-Locker
  Ransomware family which uses Tor to hide its C2 communications.
  ransomware ctblocker
- Deletes shadow copies
  Ransomware often targets backup files to inhibit system recovery.
  ransomware
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE
- 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
behavioral1 behavioral2