Overview

overview

10

Static

static

bb639437f5...le.exe

windows7_x64

10

bb639437f5...le.exe

windows10_x64

10

Sharing

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General

  • Target

    bb639437f50637545c4b0e963295b72a9bfd43bb7a9545d5e496123172845d21.sample

  • Size

    788KB

  • Sample

    210726-zcyw1p782e

  • MD5

    40ce00566109565d499b53a150716303

  • SHA1

    c2decc8da4ea7f18236f7581130515bb378c21da

  • SHA256

    bb639437f50637545c4b0e963295b72a9bfd43bb7a9545d5e496123172845d21

  • SHA512

    8d9c13aa0b5f44cff62e7e676df7b524420330008f69697c2e9b287084fa243e0ef47b9696814e4dafdc27e113aa792a82b0bb4e376bad7b90cb967396ed8b1c

Score
10/10
ctblockerransomware

Malware Config

Extracted

Path

C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\!Decrypt-All-Files-qgsajrd.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://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. N6Y2EZ5-QBVNEQ3-TX7UTYE-O4GZ54A-7W5E2HT-QOQVUNN-GLLMDLJ-AIKRRVN 52JAWPM-W2KRJQD-EWMUPQP-UVO5UTR-HLU4Z2Q-TJHOXLH-J7AVDYX-DPLBTRN SPYLXGP-HSCPOJN-F2IYVHA-YDPJMFJ-HDLZRER-RHHIT4M-A5BEEYI-2I4TQS7 Follow the instructions on the server.
URLs

http://tmc2ybfqzgkaeilm.onion.cab

http://tmc2ybfqzgkaeilm.tor2web.org

http://tmc2ybfqzgkaeilm.onion/

Extracted

Path

C:\Users\Admin\Documents\!Decrypt-All-Files-qgsajrd.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://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. N6Y2EZ5-QBVNEQ3-TX7UTYE-O4GZ54A-7W5E2HT-QOQVUNN-GLLMDLJ-AIKRRVN 52JAWPM-W2KRJQD-EWMUPQP-UVO5UTR-HLU4Z2Q-TJHOXLH-J7AVDYX-DPLBTRN SPYLXGP-HSCPOJN-F2IYVHA-YDPJMFJ-HDLZLWR-B5HIT4M-A5BEEYI-2I4T43Y Follow the instructions on the server.
URLs

http://tmc2ybfqzgkaeilm.onion.cab

http://tmc2ybfqzgkaeilm.tor2web.org

http://tmc2ybfqzgkaeilm.onion/

Extracted

Path

C:\ProgramData\ummcbbc.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

Extracted

Path

C:\Users\Admin\Documents\!Decrypt-All-Files-tfpixtg.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://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. ZSLHVVV-BPVO7NC-JAQ2QDZ-F3UNXAX-CLIHAE4-XR4LCR7-ETUGKIF-PE6KUJM XWKIYUO-YCYUXYJ-56I5CC3-F5MJD6Z-DNBXD62-ML2S6IM-TRNVJL2-EK2XRUU J2KPZKJ-BKAOGQ3-JFAUN5V-VVX776C-LDABEGQ-A4LON7N-VUC5ULS-VNLP3LN Follow the instructions on the server.
URLs

http://tmc2ybfqzgkaeilm.onion.cab

http://tmc2ybfqzgkaeilm.tor2web.org

http://tmc2ybfqzgkaeilm.onion/

Targets

    • Target

      bb639437f50637545c4b0e963295b72a9bfd43bb7a9545d5e496123172845d21.sample

    • Size

      788KB

    • MD5

      40ce00566109565d499b53a150716303

    • SHA1

      c2decc8da4ea7f18236f7581130515bb378c21da

    • SHA256

      bb639437f50637545c4b0e963295b72a9bfd43bb7a9545d5e496123172845d21

    • SHA512

      8d9c13aa0b5f44cff62e7e676df7b524420330008f69697c2e9b287084fa243e0ef47b9696814e4dafdc27e113aa792a82b0bb4e376bad7b90cb967396ed8b1c

    Score
    10/10
    ctblockerransomware

    • CTB-Locker

      Ransomware family which uses Tor to hide its C2 communications.

      ransomwarectblocker

    • Deletes shadow copies

      Ransomware often targets backup files to inhibit system recovery.

      ransomware

    • Executes dropped EXE

    • Modifies extensions of user files

      Ransomware generally changes the extension on encrypted files.

      ransomware

    • 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

    behavioral1behavioral2

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

File Deletion

2
T1107

Modify Registry

2
T1112

Credential Access

Discovery

Query Registry

1
T1012

System Information Discovery

2
T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Inhibit System Recovery

2
T1490

Defacement

1
T1491

Tasks