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LummaC2 Malware Deploys New Trigonometry-Based Anti-Sandbox Technique

LummaC2 Malware Deploys New Trigonometry-Based Anti-Sandbox Technique

Nov 20, 2023 Malware / Cyber Attack
The stealer malware known as  LummaC2  (aka Lumma Stealer) now features a new anti-sandbox technique that leverages the mathematical principle of trigonometry to evade detection and exfiltrate valuable information from infected hosts. The method is designed to "delay detonation of the sample until human mouse activity is detected," Outpost24 security researcher Alberto MarĂ­n  said  in a technical report shared with The Hacker News. Written in the C programming language, LummaC2 has been sold in underground forums since December 2022. The malware has since  received   iterative updates  that make it harder to analyze via control flow flattening and even allow it to deliver additional payloads. The current version of LummaC2 (v4.0) also requires its customers to use a  crypter  as an added concealing mechanism, not to mention prevent it from being leaked in its raw form. Another noteworthy update is the reliance on trigonometry to detect human behavior on the infiltrated
Cybercriminals Using New ASMCrypt Malware Loader to Fly Under the Radar

Cybercriminals Using New ASMCrypt Malware Loader to Fly Under the Radar

Sep 29, 2023 Malware / Cyber Threat
Threat actors are selling a new crypter and loader called  ASMCrypt , which has been described as an "evolved version" of another loader malware known as DoubleFinger. "The idea behind this type of malware is to load the final payload without the loading process or the payload itself being detected by AV/EDR, etc.," Kaspersky  said  in an analysis published this week. DoubleFinger was  first documented  by the Russian cybersecurity company, detailing infection chains leveraging the malware to propagate a cryptocurrency stealer dubbed GreetingGhoul to victims in Europe, the U.S., and Latin America. ASMCrypt, once purchased and launched by the customers, is designed to establish contact with a backend service over the TOR network using hard-coded credentials, thereby enabling the buyers to build payloads of their choice for use in their campaigns. "The application creates an encrypted blob hidden inside a .PNG file," Kaspersky said. "This image mus
Webinar: Learn How to Stop Hackers from Exploiting Hidden Identity Weaknesses

Webinar: Learn How to Stop Hackers from Exploiting Hidden Identity Weaknesses

Apr 10, 2024Webinar / Identity Security
We all know passwords and firewalls are important, but what about the invisible threats lurking beneath the surface of your systems? Identity Threat Exposures (ITEs) are like secret tunnels for hackers – they make your security way more vulnerable than you think. Think of it like this: misconfigurations, forgotten accounts, and old settings are like cracks in your digital fortress walls. Hackers exploit these weaknesses to steal login information, gain sneaky access, and move around your systems unnoticed, whether they're in the cloud or on-site. This upcoming webinar,  " Today's Top 4 Identity Security Threat Exposures: Are You Vulnerable? "  isn't just for tech experts—it's about protecting your business.  We'll use real-world examples and insights from Silverfort's latest report to show you the hidden dangers of ITEs. You'll learn about: The Top 4 Identity Threats You Might Be Overlooking:  We'll name them and explain why they're
Researchers Detail Evasive DarkTortilla Crypter Used to Deliver Malware

Researchers Detail Evasive DarkTortilla Crypter Used to Deliver Malware

Aug 18, 2022
A .NET-based evasive crypter named  DarkTortilla  has been used by threat actors to distribute a broad array of commodity malware as well as targeted payloads like Cobalt Strike and Metasploit, likely  since 2015 . "It can also deliver 'add-on packages' such as additional malicious payloads, benign decoy documents, and executables," cybersecurity firm Secureworks  said  in a Wednesday report. "It features robust anti-analysis and anti-tamper controls that can make detection, analysis, and eradication challenging." Malware delivered by the crypter includes information steakers and remote access trojans (RATs) such as Agent Tesla, AsyncRat, NanoCore, and RedLine Stealer. "DarkTortilla has versatility that similar malware does not," the researchers noted. Crypters are  software tools  that use a  combination  of encryption, obfuscation, and code manipulation of malware so as to  bypass detection  by security solutions. The delivery of DarkTortil
cyber security

UPCOMING WEBINAR: Implementing What's New in NIST CSF 2.0

websiteArmorPointCybersecurity / Webinar
Learn three practical steps to implement the latest version of the NIST CSF on 4/15 at 3pm ET. Register Today!
'Paunch', Blackhole exploit kit creator and Gang arrested in Russia

'Paunch', Blackhole exploit kit creator and Gang arrested in Russia

Dec 07, 2013
In October, we had reported that the creator of the infamous Blackhole  exploit kit was  arrested in Russia  and now the Russian Ministry of Internal Affairs has also confirmed that ' Paunch ', the mastermind behind infamous  BlackHole  exploit kit, along with Gang of 12 other criminals were arrested on October 4, 2013 in Russia. Russian security firm Group-IB has disclosed that it has assisted the police in the investigation of Paunch, who was residing in the city of Togliatti . 27-years old ' Paunch ' is the author of the notorious BlackHole and Cool exploit kits that are today popular among cybercriminals and costs $500 to $700 a month in for buyers. Cool and Blackhole exploit kits are the ready-made hacking tools for easily serving malware from compromised sites, in result to install malware on users' computers using exploits of zero-day vulnerabilities in latest web browsers. The general damage caused by the criminal gang is estimated around US $2.1
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