ctblocker | 9f108d3210afe4fd08c411caa2cd5540c7d1501b419018c193d30eccca8b02df

General

Target

1c7ed964dddd78ee5e8d3427e39fb613_JaffaCakes118
Size

731KB
Sample

240506-pm8e6seg82
MD5

1c7ed964dddd78ee5e8d3427e39fb613
SHA1

e34a8c0d58ffe8228ccd18adcab3bd155012f7bb
SHA256

9f108d3210afe4fd08c411caa2cd5540c7d1501b419018c193d30eccca8b02df
SHA512

e2995588fd9b0a02e19f1eb9443d507b6160ae34a6e6d5b7d8749ae895eceda19cdf55c24d1b563bb8841c6dc05fdcf8a8b857f5ccfdede7ebbeeee8d8d3546b
SSDEEP

12288:164z/NTF6hT2H72/3DTYFC24a10Yw54xs0FzNiqosdA6F5mSZ/:gWF6hTCq3YFD4eosa6/

Score

10^/10

Malware Config

Extracted

Path

C:\ProgramData\uowhmkm.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://kurrmpfx6kgmsopm.onion.cab or http://kurrmpfx6kgmsopm.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://kurrmpfx6kgmsopm.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://kurrmpfx6kgmsopm.onion.cab

http://kurrmpfx6kgmsopm.tor2web.org

http://kurrmpfx6kgmsopm.onion

Targets

- Target
  
  1c7ed964dddd78ee5e8d3427e39fb613_JaffaCakes118
- Size
  
  731KB
- MD5
  
  1c7ed964dddd78ee5e8d3427e39fb613
- SHA1
  
  e34a8c0d58ffe8228ccd18adcab3bd155012f7bb
- SHA256
  
  9f108d3210afe4fd08c411caa2cd5540c7d1501b419018c193d30eccca8b02df
- SHA512
  
  e2995588fd9b0a02e19f1eb9443d507b6160ae34a6e6d5b7d8749ae895eceda19cdf55c24d1b563bb8841c6dc05fdcf8a8b857f5ccfdede7ebbeeee8d8d3546b
- SSDEEP
  
  12288:164z/NTF6hT2H72/3DTYFC24a10Yw54xs0FzNiqosdA6F5mSZ/:gWF6hTCq3YFD4eosa6/
Score

10^/10

ctblocker defense_evasion execution impact 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 defense_evasion impact execution
- 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
- Suspicious use of SetThreadContext
behavioral1 behavioral2