BlackZluk 勒索軟體：您需要了解什麼才能保持安全
勒索軟體是數位領域最重大的威脅之一，而另一種威脅 BlackZluk 勒索軟體也加入了這個清單。與其他勒索軟體一樣，BlackZluk 旨在加密受害者係統上的文件，使其無法訪問，並要求付款以換取解密金鑰。隨著網路犯罪分子繼續利用企業網路中的漏洞，個人和企業必須隨時了解這些新威脅並做好準備。
在這裡，我們將探討 BlackZluk 勒索軟體是什麼、勒索軟體通常如何運作以及受害者如何成為目標。最重要的是，我們將討論避免遭受這些危險攻擊的策略。
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什麼是 BlackZluk 勒索軟體？
BlackZluk 勒索軟體是一種惡意軟體，它會加密受害者的檔案並附加「.blackZluk」副檔名。例如，原來名為「document.pdf」的檔案在加密後變成「document.pdf.blackZluk」。加密過程完成後，會產生一條名為「#RECOVERY#.txt」的勒索字條，並將其放置在受感染的系統上，通知受害者他們的檔案現在無法存取。
勒索信中的信息令人震驚：它指出受害者的網路已被破壞，敏感資料已被盜，並且文件將保持加密狀態，除非受害者支付贖金。該說明還警告不要嘗試透過防毒軟體或第三方協助進行任何形式的恢復，並表明此類操作可能會導致永久性資料遺失。
請看下面的勒索信：
Hello my dear friend (Do not scan the files with antivirus in any case. In case of data loss, the consequences are yours)
Your data is encrypted
Unfortunately for you, a major IT security weakness left you open to attack, your files have been encrypted
The only method of recovering files is to purchase decrypt tool and unique key for you.
Download the (Session) messenger (hxxps://getsession.org) in messenger: 0569a7c0949434c9c4464cf2423f66d046e3e08654e4164404b1dc23783096d313 You have to add this Id and we will complete our converstion
In case of no answer in 24 hours write us to this backup e-mail: blackpro.team24@onionmail.org
Our online operator is available in the messenger Telegram: @Files_decrypt or hxxps://t.me/Files_decrypt
Check your e-mail Spam or Junk folder if you don't get answer more than 6 hours.
Contact us soon, because those who don't have their data leaked in our press release blog and the price they'll have to pay will go up significantly.
Attention
Do not rename encrypted files.
Do not try to decrypt your data using third party software - it may cause permanent data loss.
We are always ready to cooperate and find the best way to solve your problem.
The faster you write - the more favorable conditions will be for you.
Our company values its reputation. We give all guarantees of your files decryption.
What are your recommendations?
Never change the name of the files, if you want to manipulate the files, be sure to back them up. If there are any problems with the files, we are not responsible for them.
Never work with intermediary companies because they charge you more money.Don't be afraid of us, just email us.
Sensitive data on your system was DOWNLOADED.
If you DON'T WANT your sensitive data to be PUBLISHED you have to act quickly.
Data includes:
Employees personal data, CVs, DL, SSN.
Complete network map including credentials for local and remote services.
Private financial information including: clients data, bills, budgets, annual reports, bank statements.
Manufacturing documents including: datagrams, schemas, drawings in solidworks format
And more…
What are the dangers of leaking your company's data.
First of all, you will receive fines from the government such as the GDRP and many others, you can be sued by customers of your firm for leaking information that was confidential. Your leaked data will be used by all the hackers on the planet for various unpleasant things. For example, social engineering, your employees' personal data can be used to re-infiltrate your company. Bank details and passports can be used to create bank accounts and online wallets through which criminal money will be laundered. On another vacation trip, you will have to explain to the FBI where you got millions of dollars worth of stolen cryptocurrency transferred through your accounts on cryptocurrency exchanges. Your personal information could be used to make loans or buy appliances. You would later have to prove in court that it wasn't you who took out the loan and pay off someone else's loan. Your competitors may use the stolen information to steal technology or to improve their processes, your working methods, suppliers, investors, sponsors, employees, it will all be in the public domain. You won't be happy if your competitors lure your employees to other firms offering better wages, will you? Your competitors will use your information against you. For example, look for tax violations in the financial documents or any other violations, so you have to close your firm. According to statistics, two thirds of small and medium-sized companies close within half a year after a data breach. You will have to find and fix the vulnerabilities in your network, work with the customers affected by data leaks. All of these are very costly procedures that can exceed the cost of a ransomware buyout by a factor of hundreds. It's much easier, cheaper and faster to pay us the ransom. Well and most importantly, you will suffer a reputational loss, you have been building your company for many years, and now your reputation will be destroyed.
Do not go to the police or FBI for help and do not tell anyone that we attacked you.
They won't help and will only make your situation worse. In 7 years not a single member of our group has been caught by the police, we are top-notch hackers and never leave a trace of crime. The police will try to stop you from paying the ransom in any way they can. The first thing they will tell you is that there is no guarantee to decrypt your files and delete the stolen files, this is not true, we can do a test decryption before payment and your data will be guaranteed to be deleted because it is a matter of our reputation, we make hundreds of millions of dollars and we are not going to lose income because of your files. It is very beneficial for the police and the FBI to let everyone on the planet know about the leak of your data, because then your state will receive fines under GDPR and other similar laws. The fines will go to fund the police and FBI. The police and FBI will not be able to stop lawsuits from your customers for leaking personal and private information. The police and FBI will not protect you from repeat attacks. Paying us a ransom is much cheaper and more profitable than paying fines and legal fees.
If you do not pay the ransom, we will attack your company again in the future.
Start messaging with your unique ID an incident file #RECOVERY#.txt
your unique ID
BlackZluk 的目標：勒索與資料竊取
與其他勒索軟體程式一樣，BlackZluk 的目的是向受害者勒索金錢。透過將受害者鎖定在文件之外，攻擊者希望失去對有價值資料的存取權的威脅將迫使企業或個人付費。此外，BlackZluk 的創建者使用雙重勒索策略：他們不僅加密文件，還竊取敏感資料。這些被盜資料可能包括公司機密、財務記錄或員工和客戶的個人資訊。如果不支付贖金，攻擊者就會威脅公開洩露這些數據，從而增加受害者遵守其要求的壓力。
文件加密和資料竊取的結合使得 BlackZluk 勒索軟體特別危險。即使組織有資料備份，對敏感資訊外洩的恐懼仍然會促使其考慮支付贖金。
勒索軟體如何運作
勒索軟體程式通常遵循類似的模式：它們滲透系統，加密文件，然後要求付款以換取恢復。勒索軟體使用的加密過程可能有所不同，有些病毒使用對稱加密（加密和解密使用相同的金鑰），而有些則使用非對稱加密（一對金鑰，一個用於加密，另一個用於解密）。無論採用哪種方法，一旦檔案被加密，在沒有攻擊者金鑰的情況下恢復檔案通常是不可能的。
雖然有些受害者可能會想要支付贖金，但網路安全專家強烈建議不要這樣做。無法保證攻擊者在收到付款後會提供解密金鑰，透過付款，受害者正在助長網路犯罪分子的行動，為未來的攻擊提供支援。此外，付費並不能阻止攻擊者洩漏被盜資料。
BlackZluk 的攻擊方法
與大多數惡意軟體一樣，BlackZluk 勒索軟體通常透過網路釣魚電子郵件、惡意附件和受感染的網站進行分發。攻擊者經常使用社會工程策略來誘騙受害者下載並開啟受感染的檔案。文件執行後，勒索軟體就會加密受害者的檔案並顯示勒索訊息。
在許多情況下，勒索軟體會透過網路漏洞或安全薄弱的系統傳播。惡意軟體可以在網路內傳播，感染其他設備，這使得勒索軟體攻擊對於具有互連繫統的企業尤其具有破壞性。
保護自己免受 BlackZluk 勒索軟體的侵害
鑑於勒索軟體攻擊的嚴重性，預防是關鍵。您可以採取幾個步驟來保護自己免受 BlackZluk 勒索軟體和類似威脅的侵害。
- 定期備份：防範勒索軟體的最佳方法是定期備份所有關鍵資料。確保備份儲存在多個位置，包括離線或遠端伺服器，因此攻擊者無法存取它們。
- 保持軟體更新：保持所有軟體（尤其是作業系統和安全程序）更新至關重要。許多勒索軟體攻擊利用過時軟體中的已知漏洞，因此及時更新修補程式和更新有助於防止感染。
- 謹慎對待電子郵件和下載：網路釣魚電子郵件通常會傳播勒索軟體。避免打開不熟悉的電子郵件中的附件或點擊鏈接，尤其是來自未知寄件者的電子郵件。僅從受信任且經過驗證的來源下載文件和軟體。
移除 BlackZluk 勒索軟體
如果系統感染 BlackZluk rRansomware，盡快移除惡意軟體對於防止進一步的檔案加密至關重要。但是，刪除勒索軟體不會解密已受影響的檔案。恢復加密檔案的唯一方法是使用備份（假設有可用的備份）。這進一步強調了定期和安全備份的重要性。
在刪除勒索軟體時，使用專業的防毒或反惡意軟體軟體並在必要時諮詢網路安全專業人員非常重要。嘗試手動解密檔案或使用第三方解密工具可能會導致額外的損壞或永久資料遺失。
結論：預防是最好的治療方法
BlackZluk 勒索軟體的興起提醒人們網路犯罪分子所構成的持續危險。勒索軟體程式已經發展到鎖定用戶的資料、竊取和威脅洩露敏感資訊。 BlackZluk 勒索軟體採用雙重勒索策略，強調需要保持警惕、採取適當的網路安全實踐，最重要的是備份關鍵資料的重要性。
如果您定期更新軟體、謹慎對待電子郵件附件並維護安全備份，則可以保護自己免受勒索軟體的破壞性影響。雖然清除勒索軟體可能會阻止進一步的損害，但預防是確保您不會成為 BlackZluk 勒索軟體等攻擊的下一個受害者的最有效方法。
