CVE-2019-15947

In Bitcoin Core 0.18.0, bitcoin-qt stores wallet.dat data unencrypted in memory. Upon a crash, it may dump a core file. If a user were to mishandle a core file, an attacker can reconstruct the user's wallet.dat file, including their private keys, via a grep "6231 0500" command...

CVE-2019-15947

In Bitcoin Core 0.18.0, bitcoin-qt stores wallet.dat data unencrypted in memory. Upon a crash, it may dump a core file. If a user were to mishandle a core file, an attacker can reconstruct the user's wallet.dat file, including their private keys, via a grep "6231 0500" command...

Command injection

In Bitcoin Core 0.18.0, bitcoin-qt stores wallet.dat data unencrypted in memory. Upon a crash, it may dump a core file. If a user were to mishandle a core file, an attacker can reconstruct the user's wallet.dat file, including their private keys, via a grep "6231 0500" command...

CVE-2019-15947

In Bitcoin Core 0.18.0, bitcoin-qt stores wallet.dat data unencrypted in memory. Upon a crash, it may dump a core file. If a user were to mishandle a core file, an attacker can reconstruct the user's wallet.dat file, including their private keys, via a grep "6231 0500" command...

CVE-2019-15947

Removed by vendor...

CVE-2019-15947

Bitcoin Core 0.18.0 stores wallet.dat data unencrypted in memory; on crash a core dump can enable an attacker to reconstruct wallet.dat with private keys by grepping for the sequence 6231 0500. Mitigation: upgrade to Bitcoin Core 0.20.x (e.g., 0.20.1) as advised by Mageia/Gentoo OSS advisories; n...

$5.3M Ransomware Demand: Massachusetts City Says No Thanks

After a ransomware attack slapped a hefty payout demand of $5.3 million on New Bedford, Mass., the city announced that it is instead opting to pick up the pieces and restore what it can from backups itself. If the city had opted to pay, the payout would have been the largest known ransom payout f...

Spam and phishing in Q2 2019

Quarterly highlights Spam through Google services In the second quarter of 2019, scammers were making active use of cloud-based data storage services such as Google Drive and Google Storage to hide their illegal content. The reasoning behind this is simple: a link from a legitimate domain is seen...

A week in security (August 19 – 25)

Last week on Malwarebytes Labs, we reported on the presence of Magecart on a type of poker software; outlined how the Key Negotiation of Bluetooth KNOB attack works; followed the money on a Bitcoin sextortion campaign; looked back at DEF CON 27; and reported on continuing ransomware attacks on...

The lucrative business of Bitcoin sextortion scams (updated)

Update 2019-09-04: A new wave of sextortion emails purporting to have originated from a group of hackers called ChaosCC—a play on the legitimate European white hat hacking community, Chaos Computer Club CCC—has recently caught the attention of the security world. Below is a sample email we captur...

CB TAU Threat Intelligence Notification: Sodinokibi Ransomware

Sodinokibi otherwise known as Sodin or REvil is a ransomware variant that has recently been observed evolving its delivery techniques, leveraging fake antivirus software and PowerShell droppers. This malware appears to be related to GandCrab and is likely a result of their operation closing up...

A week in security (August 5 – 11)

Last week on Malwarebytes Labs, we explained how brain-machine interface BMI technology could usher in a world of Internet of Thoughts, why having backdoors is problematic, and how we can improve the security of our smart homes. To cap off Hacker Summer Camp week, the Labs team released a special...

iNSYNQ Ransom Attack Began With Phishing Email

A ransomware outbreak that hit QuickBooks cloud hosting firm iNSYNQ in mid-July appears to have started with an email phishing attack that snared an employee working in sales for the company, KrebsOnSecurity has learned. It also looks like the intruders spent roughly ten days rooting around...

Binance KYC Data Leak — Crypto Exchange Sets $290,000 Bounty On Blackmailer

Malta-based cryptocurrency exchange Binance has become a victim of a ransom demand from a scammer who claimed to have hacked the KYC Know Your Customer data of thousands of its customers. The unknown attacker threatened the world's largest cryptocurrency exchange by volume to release KYC...

PT-2019-14488

Name of the Vulnerable Software and Affected Versions Bitcoin Core version 0.18.0 Description The issue concerns the storage of wallet.dat data in memory by bitcoin-qt. When the program crashes, it may create a core file that contains unencrypted wallet data. If this core file is not handled...

Android Ransomware Spreads Via 'Sex Simulation Game' Links on Reddit, SMS

Researchers are warning of a new Android ransomware being spread via links in online forums and SMS messages. The malicious links purport to connect back to a sex simulation game, but in reality lead to ransomware that encrypts victims’ files. The Android ransomware, dubbed Android/Filecoder.C, h...

Unusual Linux Ransomware Targets NAS Servers

A rare instance of ransomware targeting Linux-based file storage systems network-attached storage servers, specifically has been spotted, spreading via 15 separate but related campaigns. The adversaries behind the effort are continuing their depredations on an ongoing basis, according to...

A New Ransomware Is Targeting Network Attached Storage (NAS) Devices

A new ransomware family has been found targeting Linux-based Network Attached Storage NAS devices made by Taiwan-based QNAP Systems and holding users' important data hostage until a ransom is paid, researchers told The Hacker News. Ideal for home and small business, NAS devices are dedicated file...

Steer clear of Bitcoin Cash generators

Here’s an interesting evolution on a well-worn scam, taking one profit generating fakeout and turning it into something else entirely. For years, gamers have been stuck navigating the treacherous waters of fake video game giveaways. With so many actual genuine gaming giveaways around, you’re neve...

Two Florida Cities Paid $1.1 Million to Ransomware Hackers This Month

In the last two weeks, Florida has paid more than $1.1 million in bitcoin to cybercriminals to recover encrypted files from two separate ransomware attacks—one against Riviera Beach and the other against Lake City. Lake City, a city in northern Florida, agreed on Monday to pay hackers 42 Bitcoin...