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World's Biggest Botnet Just Sent 12.5 Million Emails With Scarab Ransomware

World's Biggest Botnet Just Sent 12.5 Million Emails With Scarab Ransomware

November 27, 2017Swati Khandelwal
A massive malicious email campaign that stems from the world's largest spam botnet Necurs is spreading a new strain of ransomware at the rate of over 2 million emails per hour and hitting computers across the globe. The popular malspam botnet Necrus which has previously found distributing Dridex banking trojan , Trickbot banking trojan , Locky ransomwar e, and Jaff ransomware , has now started spreading a new version of Scarab ransomware. According to F-Secure , Necurs botnet is the most prominent deliverer of spam emails with five to six million infected hosts online monthly and is responsible for the biggest single malware spam campaigns. Scarab ransomware is a relatively new ransomware family that was initially spotted by ID Ransomware creator Michael Gillespie in June this year. Massive Email Campaign Spreads Scarab Ransomware According to a blog post published by security firm Forcepoint, the massive email campaign spreading Scarab ransomware virus started at
Unpatched Microsoft Word Flaw is Being Used to Spread Dridex Banking Trojan

Unpatched Microsoft Word Flaw is Being Used to Spread Dridex Banking Trojan

April 11, 2017Swati Khandelwal
If you are a regular reader of The Hacker News, you might be aware of an ongoing cyber attack — detected in the wild by McAfee and FireEye — that silently installs malware on fully-patched computers by exploiting an unpatched Microsoft Word vulnerability in all current versions of Microsoft Office. Now, according to security firm Proofpoint, the operators of the Dridex malware started exploiting the unpatched Microsoft Word vulnerability to spread a version of their infamous Dridex banking trojan . Dridex is currently one of the most dangerous banking trojans on the Internet that exhibits the typical behavior of monitoring a victim's traffic to bank sites by infiltrating PCs and stealing victim's online banking credentials and financial data. The Dridex actors usually relied on macro-laden Word files to distribute the malware through spam messages or emails. However, this is the first time when researchers found the Dridex operators using an unpatched zero-day flaw
Dridex Banking Trojan Gains ‘AtomBombing’ Code Injection Ability to Evade Detection

Dridex Banking Trojan Gains ‘AtomBombing’ Code Injection Ability to Evade Detection

March 01, 2017Swati Khandelwal
Security researchers have discovered a new variant of Dridex – one of the most nefarious banking Trojans actively targeting financial sector – with a new, sophisticated code injection technique and evasive capabilities called " AtomBombing ." On Tuesday, Magal Baz, security researcher at Trusteer IBM  disclosed new research, exposing the new Dridex version 4, which is the latest version of the infamous financial Trojan and its new capabilities. Dridex is one of the most well-known Trojans that exhibits the typical behavior of monitoring a victim's traffic to bank sites by infiltrating victim PCs using macros embedded in Microsoft documents or via web injection attacks and then stealing online banking credentials and financial data. However, by including AtomBombing capabilities, Dridex becomes the first ever malware sample to utilize such sophisticated code injection technique to evade detection. What is "AtomBombing" Technique? Code injection te
Someone Hijacks Botnet Network & Replaces Malware with an Antivirus

Someone Hijacks Botnet Network & Replaces Malware with an Antivirus

February 05, 2016Mohit Kumar
The Dridex banking trojan that is widely being used by cyber criminals to distribute malware onto users’ machines has now been found distributing a security software. A portion of the Dridex banking Trojan botnet may have been hacked or compromised by an unknown Whitehat Hacker, who replaced the malicious links with  Avira Antivirus  installers. What is Dridex Banking Trojan? How it Works? Dridex malware – also known as Bugat and Cridex – is believed to have been created by cyber criminals in Eastern Europe in an effort to harvest online banking details. Even after a high-profile takedown operation in late 2015, the Dridex botnet seems to be active again. The Dridex virus typically distributes itself through spam messages or emails that include malicious attachments, most often a Microsoft Office file or Word document integrated with malicious macros. Once the malicious file has been clicked, the macros download and install the main payload of the virus – th
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