Overview

overview

10

Static

static

d6f34c4fb4...79.exe

windows7-x64

10

d6f34c4fb4...79.exe

windows10-2004-x64

1

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General

  • Target
    d6f34c4fb40c7f7cf66efbf0eb1bfd3a55089f65181d4d0c2de3c183f7527c79
  • Size 954KB
  • Sample221128-vybs8sfh7t
  • SHA256 d6f34c4fb40c7f7cf66efbf0eb1bfd3a55089f65181d4d0c2de3c183f7527c79
  • MD5 SHA1 SHA512 SSDEEP
Score
10/10
ctblockerransomware

Malware Config

Extracted

Path

  • C:\Program Files (x86)\Microsoft Office\CLIPART\PUB60COR\!Decrypt-All-Files-abrgzxi.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://pf5dahldauhrjxfd.onion.cab or http://pf5dahldauhrjxfd.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://pf5dahldauhrjxfd.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. PNTWLNP-5NWGYBY-HS7X4XB-DY6SQPM-BXFCXEV-MUHL6HZ-WGQFIHD-ZRMFJ4A I2FW5N3-37XBAXS-G447I4Z-JPRW5WY-JQJMJLE-7I3GVVO-4LT2PL7-7HYKKMN HJUN2YH-RV2ITAE-XAF5UTN-IQJYHI2-GC26EHO-UISSXP6-HUSJ7YY-IIMVDCG Follow the instructions on the server.
URLs

  • http://pf5dahldauhrjxfd.onion.cab

  • http://pf5dahldauhrjxfd.tor2web.org

  • http://pf5dahldauhrjxfd.onion/

Extracted

Path

  • C:\Users\Admin\Documents\!Decrypt-All-Files-abrgzxi.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://pf5dahldauhrjxfd.onion.cab or http://pf5dahldauhrjxfd.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://pf5dahldauhrjxfd.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. PNTWLNP-5NWGYBY-HS7X4XB-DY6SQPM-BXFCXEV-MUHL6HZ-WGQFIHD-ZRMFJ4A I2FW5N3-37XBAXS-G447I4Z-JPRW5WY-JQJMJLE-7I3GVVO-4LT2PL7-7HYKKMN HJUN2YH-RV2ITAE-XAF5UTN-IQJYHI2-GC26WVO-QRSSXP6-HUSJ7YY-IIMFPIT Follow the instructions on the server.
URLs

  • http://pf5dahldauhrjxfd.onion.cab

  • http://pf5dahldauhrjxfd.tor2web.org

  • http://pf5dahldauhrjxfd.onion/

Extracted

Path

  • C:\ProgramData\zlwdkgg.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://pf5dahldauhrjxfd.onion.cab or http://pf5dahldauhrjxfd.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://pf5dahldauhrjxfd.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://pf5dahldauhrjxfd.onion.cab

  • http://pf5dahldauhrjxfd.tor2web.org

  • http://pf5dahldauhrjxfd.onion

Targets

    • Target
      d6f34c4fb40c7f7cf66efbf0eb1bfd3a55089f65181d4d0c2de3c183f7527c79
    • Size 954KB
    • SHA256 d6f34c4fb40c7f7cf66efbf0eb1bfd3a55089f65181d4d0c2de3c183f7527c79
    • MD5 SHA1 SHA512 SSDEEP
    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 Enterprise v6

Tasks