ctblocker | b35793f0801b0e787507e04f25f49627b9b2068125df2614e2c98dc35dcb8f0a

General

Target

b35793f0801b0e787507e04f25f49627b9b2068125df2614e2c98dc35dcb8f0a
Size

815KB
Sample

221128-tvpegscc9x
MD5

51ed7e8e341c08280b7a0217f7c39a3f
SHA1

079ad2df4a1db02c4170b7d44aaa189f16194fa1
SHA256

b35793f0801b0e787507e04f25f49627b9b2068125df2614e2c98dc35dcb8f0a
SHA512

13c810699ca58e17a8a5e2bf36e3eeb5d404d5f740ae833fc06f3bcef3aa3cb01da6d373be07a32e29cc613c09803132b8b1a28928a2ffd35abc60b1918168be
SSDEEP

24576:coZle5i/xmrxgxh6UAkNe7bBmGC5MN8XL:dg9yG4Gen

Score

10^/10

ctblocker ransomware

Malware Config

Extracted

Path

C:\Users\Admin\Documents\!Decrypt-All-Files-brkqcsi.txt

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://onja764ig6vah2jo.onion.cab or http://onja764ig6vah2jo.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://onja764ig6vah2jo.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. AQCDYTZ-57BI5FG-EGWPADW-GRE3OU6-2TOEQWA-ZGKOGD2-5EKGXKK-RFEIYRU K4IIXQK-HSX3FUW-J4PQ6XV-DDKUHXN-5IRI4CO-6SSP5Q5-FPW5EQI-IJMIK5I AUC4OG4-H34FEV6-67IKE5U-PR5QOFL-ZTVZMIX-CIQE3IA-PZUNUUS-2L7TZQS Follow the instructions on the server.

URLs

http://onja764ig6vah2jo.onion.cab

http://onja764ig6vah2jo.tor2web.org

http://onja764ig6vah2jo.onion/

Extracted

Path

C:\ProgramData\yrnkowk.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://onja764ig6vah2jo.onion.cab or http://onja764ig6vah2jo.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://onja764ig6vah2jo.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://onja764ig6vah2jo.onion.cab

http://onja764ig6vah2jo.tor2web.org

http://onja764ig6vah2jo.onion

Targets

- Target
  
  b35793f0801b0e787507e04f25f49627b9b2068125df2614e2c98dc35dcb8f0a
- Size
  
  815KB
- MD5
  
  51ed7e8e341c08280b7a0217f7c39a3f
- SHA1
  
  079ad2df4a1db02c4170b7d44aaa189f16194fa1
- SHA256
  
  b35793f0801b0e787507e04f25f49627b9b2068125df2614e2c98dc35dcb8f0a
- SHA512
  
  13c810699ca58e17a8a5e2bf36e3eeb5d404d5f740ae833fc06f3bcef3aa3cb01da6d373be07a32e29cc613c09803132b8b1a28928a2ffd35abc60b1918168be
- SSDEEP
  
  24576:coZle5i/xmrxgxh6UAkNe7bBmGC5MN8XL:dg9yG4Gen
Score

10^/10

ctblocker ransomware
- CTB-Locker
  Ransomware family which uses Tor to hide its C2 communications.
  ransomware ctblocker
- Executes dropped EXE
- Checks computer location settings
  Looks up country code configured in the registry, likely geofence.
- Drops desktop.ini file(s)
- Drops file in System32 directory
- Sets desktop wallpaper using registry
  ransomware
- Suspicious use of SetThreadContext
behavioral1 behavioral2