Wednesday, May 22, 2024

Decryptor tool for BTC ransomware released – Avast

BTC ransomware was distributed using traditional methods embedding the malicious file in the body of the email or sending them directly as an attachment.

It doesn’t use any well-known vulnerabilities to replicate as like we saw with WannaCry and EternalRocks.

This ransomware was distributed through well know file extensions like (.doc,.jpg,.jpeg,.mp4,.PSD,.pfx,.pdf) and so on. Once it infected it will rename the file in following format FileName.Extension.[Email].Ext2.

Once entered into the system it will generate a random password(unique per machine) and with the password, an encryption key will be generated.

It will then encrypted with a public key(hardcoded in the binary) and dispense a user ID in ransom files.

The encrypted symmetric key is kept as a base64-encoded string %USERPROFILE%\Desktop\key.dat.The ransomware uses MS CryptoAPI for encrypting files.

Once the encryption process completed it will set a wallpaper on your desktop like this.

Decryptor tool for BTC ransomware

BTC Decryptor tool from Avast

Security Expert Ladislav Zezula from Avast comes up with the decryptor tool for BTC ransomware. Click here to Download BTC Decrypter.

You can use it to decrypt files from Local drives, Network drives, and Folders, we also need to upload original along with the decrypted file, both of them should match.

Decryptor tool for BTC ransomware
Decryptor tool for BTC ransomware

On could sixteenth, 2017, the master private key was revealed by BleepingComputer. But the master key was not used in the Decrypter tool.

Instead, they used brute force Methods to retrieve the passwords that used by ransomware to Encrypt the files.

Also Read


Latest articles

OmniVision Technologies Cyber Attack, Hackers Stolen Personal Data in Ransomware Attack

OmniVision Technologies, Inc. (OVT) recently disclosed a significant security breach that compromised its clients'...

Critical Flaw In Confluence Server Let Attackers Execute Arbitrary Code

The widely used team workspace corporate wiki Confluence has been discovered to have a...

Threat Actors Leverage Bitbucket Artifacts to Breach AWS Accounts

In a recent investigation into Amazon Web Services (AWS) security breaches, Mandiant uncovered a...

Hackers Breached Western Sydney University Microsoft 365 & Sharepoint Environments

Western Sydney University has informed approximately 7,500 individuals today of an unauthorized access incident...

Memcyco Report Reveals Only 6% Of Brands Can Protect Their Customers From Digital Impersonation Fraud

Memcyco Inc., provider of digital trust technology designed to protect companies and their customers...

DoppelGänger Attack: Malware Routed Via News Websites And Social Media

A Russian influence campaign, DoppelGänger, leverages fake news websites (typosquatted and independent) to spread...

Critical Memory Corruption In Cloud Logging Infrastructure Enables Code Execution Attack

A new critical vulnerability has been discovered in Fluent Bit's built-in HTTP server, which...
Guru baran
Guru baran
Gurubaran is a co-founder of Cyber Security News and GBHackers On Security. He has 10+ years of experience as a Security Consultant, Editor, and Analyst in cybersecurity, technology, and communications.

Free Webinar

Live API Attack Simulation

94% of organizations experience security problems in production APIs, and one in five suffers a data breach. As a result, cyber-attacks on APIs increased from 35% in 2022 to 46% in 2023, and this trend continues to rise.
Key takeaways include:

  • An exploit of OWASP API Top 10 vulnerability
  • A brute force ATO (Account Takeover) attack on API
  • A DDoS attack on an API
  • Positive security model automation to prevent API attacks

Related Articles