ctblocker | c8b7d76b904d86567e05ea52486147d3a00db05dd12fd172486aa31d0f8c124f

General

Target

27c76f06a50dbe2028788167363b5dd3_JaffaCakes118
Size

707KB
Sample

241009-avlttaxhmb
MD5

27c76f06a50dbe2028788167363b5dd3
SHA1

952a5318d35b0426199ec53be7e8b5e52439d94d
SHA256

c8b7d76b904d86567e05ea52486147d3a00db05dd12fd172486aa31d0f8c124f
SHA512

3de6b7035b58101fd65e67083dfeabd1e69027dc8da66eb0d50c17d0f8e9429cf55e8a06d022311f2da3f4356ac1fae5ec8ccc4283cc9d00a51b1d2693c2b4fb
SSDEEP

12288:4ukw9vd9s52tz67Tn/dHbiaPzvPOy1nv8efWj/caUSB0+A+Pm1saHp:dX9vAn7/d+aPzOknvXO/50+A+SVp

Score

10^/10

Malware Config

Extracted

Path

C:\ProgramData\esufwfj.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://tmc2ybfqzgkaeilm.onion.cab or http://tmc2ybfqzgkaeilm.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://tmc2ybfqzgkaeilm.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://tmc2ybfqzgkaeilm.onion.cab

http://tmc2ybfqzgkaeilm.tor2web.org

http://tmc2ybfqzgkaeilm.onion

Targets

- Target
  
  Abrechnung53534.exe
- Size
  
  728KB
- MD5
  
  c55825824295fb010050e0a8929088dd
- SHA1
  
  e3047fa2e4128af1ca2cd5a854a9772421ab185e
- SHA256
  
  0a77fc85a49ed22e8a829c57253cffff4af89a690cec2125ebdb53be09f64e86
- SHA512
  
  7be00b8a624438b37d7d10b5327accb94e9ed0ab68ff809fd4a18699bf1f64cb6700827431225be366cf2ef4410c90ce314e2256b55bcc474a208de6e2f0b6d8
- SSDEEP
  
  12288:cLgIvdjsT2N167Tn/VHbiaPzvLOyx1v2ef0j/uakSB0aA+PmLgaYM:eDvCD7/V+aPzSe1vto/T0aA+a5
Score

10^/10

ctblocker defense_evasion discovery 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
- 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
behavioral1 behavioral2