Recently, the SonicWall Capture Labs threat research team has identified various malware strains being distributed through a custom VMDetector Loader. This loader is typically delivered to the victim’s system via image files embedded with steganography. The primary payloads observed include popular malware families such as Remcos, VIPKeyLogger, AveMariaRAT, DCRAT, FormBook, and others.
Attackers send an email with an archive file that includes either JavaScript, VBScript, or HTA content. The embedded scripts employ basic obfuscation through string replacement and base64 encoding, making them appear benign while evading straightforward detection.
Read more…
Source: Sonicwall
Sign up for our Newsletter
The latest news and insights delivered right to your inbox.
Related:
- Carbanak and FIN7 Attack Techniques
April 20, 2021
Constant monitoring of threat groups is one of the ways that security researchers and law enforcement agencies are able defend systems against cybercrime. Among these cybercriminals are financially motivated threat groups Carbanak and FIN7. Although both names have at times been used to refer to the same group, organizations such as MITRE identifies them as ...
- Pulse Secure VPN zero-day used to hack defense firms, govt orgs
April 20, 2021
Pulse Secure has shared mitigation measures for a zero-day authentication bypass vulnerability in the Pulse Connect Secure (PCS) SSL VPN appliance actively exploited in attacks against worldwide organizations and focused on US Defense Industrial base (DIB) networks. To mitigate the vulnerability tracked as CVE-2021-22893 (with a maximum 10/10 severity score), Pulse Secure advises customers with gateways ...
- Lazarus hacking group now hides payloads in BMP image files
April 20, 2021
The Lazarus group has tweaked its loader obfuscation techniques by abusing image files in a recent phishing campaign. Lazarus is a state-sponsored advanced persistent threat (APT) group from North Korea. Known as one of the most prolific and sophisticated APTs out there, Lazarus has been in operation for over a decade and is considered responsible for worldwide ...
- Fake Microsoft Store, Spotify sites spread info-stealing malware
April 20, 2021
Attackers are promoting sites impersonating the Microsoft Store, Spotify, and an online document converter that distribute malware to steal credit cards and passwords saved in web browsers. The attack was discovered by cybersecurity firm ESET who issued a warning yesterday on Twitter to be on the lookout for the malicious campaign. In a conversation with Jiri Kropac, ...
- Ransomware gang tries to extort Apple hours ahead of Spring Loaded event
April 20, 2021
The operators of the REvil ransomware are demanding that Apple pay a ransom demand to avoid having confidential information leaked on the dark web. The REvil crew claims it came into possession of Apple product data after breaching Quanta Computer, a Taiwanese company that is the biggest laptop manufacturer in the world and which is also ...
- Zero-Day Exploits in SonicWall Email Security Lead to Enterprise Compromise
April 20, 2021
In March 2021, Mandiant Managed Defense identified three zero-day vulnerabilities in SonicWall’s Email Security (ES) product that were being exploited in the wild. These vulnerabilities were executed in conjunction to obtain administrative access and code execution on a SonicWall ES device. The adversary leveraged these vulnerabilities, with intimate knowledge of the SonicWall application, to install a ...