- Spearphishing Campaign Exploits COVID-19 To Spread Lokibot Infostealer
April 3, 2020
Researchers have discovered threat actors once again capitalizing on the COVID-19 pandemic and current attention on the World Health Organization (WHO) with a new spearphishing email designed to spread the LokiBot trojan sent using the WHO trademark as a lure. Researchers at FortiGuard Labs on March 27 first observed the malicious COVID-19-themed scam, which claims to ...
- FakeNet Genie: Improving Dynamic Malware Analysis with Cheat Codes for FakeNet-NG
April 2, 2020
As developers of the network simulation tool FakeNet-NG, reverse engineers on the FireEye FLARE team, and malware analysis instructors, we get to see how different analysts use FakeNet-NG and the challenges they face. We have learned that FakeNet-NG provides many useful features and solutions of which our users are often unaware. In this blog post, ...
- Loncom packer: from backdoors to Cobalt Strike
April 2, 2020
The previous story described an unusual way of distributing malware under disguise of an update for an expired security certificate. After the story went out, we conducted a detailed analysis of the samples we had obtained, with some interesting findings. All of the malware we examined from the campaign was packed with the same packer, which we ...
- Wiper Malware Called “Coronavirus” Spreads Among Windows Victims
April 1, 2020
A new Windows malware has emerged that makes disks unusable by overwriting the master boot record (MBR). It takes its cue from the COVID-19 pandemic, calling itself simply “Coronavirus.” Overwriting the MBR is the same trick that the infamous NotPetya wiper malware used in 2017 in a campaign that caused widespread, global financial damage. Worryingly, according to the ...
- LimeRAT malware is being spread through VelvetSweatshop Excel encryption technique
April 1, 2020
A new campaign is spreading the LimeRAT Remote Access Trojan by harnessing an old encryption technique in Excel files. LimeRAT is a simple Trojan designed for Windows machines. The malware is able to install backdoors on infected machines and encrypt files in the same way as typical ransomware strains, add PCs to botnets, and install cryptocurrency ...
- Holy water: ongoing targeted water-holing attack in Asia
March 31, 2020
On December 4, 2019, we discovered watering hole websites that were compromised to selectively trigger a drive-by download attack with fake Adobe Flash update warnings. This campaign has been active since at least May 2019, and targets an Asian religious and ethnic group. The threat actor’s unsophisticated but creative toolset has been evolving a lot since ...
- Zeus Sphinx Banking Trojan Arises Amid COVID-19
March 30, 2020
According to researchers Amir Gandler and Limor Kessem at IBM X-Force, Sphinx (a.k.a. Zloader or Terdot) began resurfacing in December. However, the researchers observed a significant increase in volume in March, as Sphinx’s operators looked to take advantage of the interest and news around government relief payments. First seen in August 2015, Sphinx is a modular ...
- Social Engineering Based on Stimulus Bill and COVID-19 Financial Compensation Schemes Expected to Grow in Coming Weeks
March 27, 2020
Given the community interest and media coverage surrounding the economic stimulus bill currently being considered by the United States House of Representatives, we anticipate attackers will increasingly leverage lures tailored to the new stimulus bill and related recovery efforts such as stimulus checks, unemployment compensation and small business loans. Although campaigns employing themes relevant to ...
- Ryuk Ransomware Keeps Targeting Hospitals During the Pandemic
March 26, 2020
The Ryuk Ransomware operators to continue to target hospitals even as these organizations are overwhelmed during the Coronavirus pandemic. Last week BleepingComputer contacted various ransomware groups and asked if they would target hospitals and other healthcare organizations during the pandemic. With the amount of strain healthcare organizations are under during this pandemic, I was hoping that ransomware operators would ...
- Ransomware Maze
March 26, 2020
The Maze ransomware, previously known in the community as “ChaCha ransomware”, was discovered on May the 29th 2019 by Jerome Segura. The main goal of the ransomware is to crypt all files that it can in an infected system and then demand a ransom to recover the files. However, the most important characteristic of Maze is the ...