VMDetector-Based Loader Abuses Steganography to Deliver Infostealers


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:

  • CISA Adds Three Known Exploited Vulnerabilities to Catalog

    March 7, 2023

    CISA has added three new vulnerabilities to its Known Exploited Vulnerabilities Catalog, based on evidence of active exploitation. CVE-2022-28810 Zoho ManageEngine ADSelfService Plus Remote Code Execution Vulnerability CVE-2022-33891 Apache Spark Command Injection Vulnerability Read more… Source: U.S. Cybersecurity and Infrastructure Security Agency  

  • Emotet malware attacks return after three-month break

    March 7, 2023

    The Emotet malware operation is again spamming malicious emails as of Tuesday morning after a three-month break, rebuilding its network and infecting devices worldwide. Emotet is a notorious malware distributed through email containing malicious Microsoft Word and Excel document attachments. When users open these documents and macros are enabled, the Emotet DLL will be downloaded and ...

  • Protecting Android clipboard content from unintended exposure

    March 6, 2023

    Considering mobile users often use the clipboard to copy and paste sensitive information, like passwords or payment information, clipboard contents can be an attractive target for cyberattacks. Leveraging clipboards can enable attackers to collect target information and exfiltrate useful data. Examples even exist of attackers hijacking and replacing the clipboard contents for malicious purposes, such as modifying a copied ...

  • Threat landscape for industrial automation systems for H2 2022

    March 6, 2023

    In H2 2022, the percentage of ICS computers on which malicious objects were blocked increased by 3.5 percentage points compared to the previous six-month period, reaching 34.3%. This was higher than the percentages for 2021 and even 2020. Read more… Source: Kaspersky

  • DoppelPaymer ransomware suspects cuffed, alleged ringleaders escape

    March 6, 2023

    German and Ukrainian cops have arrested suspected members of the DoppelPaymer ransomware crew and issued warrants for three other “masterminds” behind the global operation that extorted tens of millions of dollars and may have led to the death of a hospital patient. The criminal gang, also known as Indrik Spider, Double Spider and Grief, used double-extortion ...

  • Spike in LokiBot Activity During Final Week of 2022

    March 3, 2023

    Unit 42 researchers have uncovered a malware distribution campaign that is delivering the LokiBot information stealer via business email compromise (BEC) phishing emails. This malware is designed to steal sensitive information from victims’ systems, such as passwords and banking information, as well as other sensitive data. In this blog, Unit 42 researchers will explain how attackers used ...