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Mirai-based Botnet Exploiting Zero-Day Bugs in Routers and NVRs for Massive DDoS Attacks

Mirai-based Botnet Exploiting Zero-Day Bugs in Routers and NVRs for Massive DDoS Attacks
Nov 23, 2023 Vulnerability / Cyber Threat
An active malware campaign is leveraging two zero-day vulnerabilities with remote code execution (RCE) functionality to rope routers and video recorders into a Mirai-based distributed denial-of-service (DDoS) botnet. "The payload targets routers and network video recorder (NVR) devices with default admin credentials and installs Mirai variants when successful," Akamai  said  in an advisory published this week. Details of the flaws are currently under wraps to allow the two vendors to publish patches and prevent other threat actors from abusing them. The fixes for one of the vulnerabilities are expected to be shipped next month. The attacks were first discovered by the web infrastructure and security company against its honeypots in late October 2023. The perpetrators of the attacks have not been identified as yet. The botnet, which has been codenamed InfectedSlurs due to the use of racial and offensive language in the command-and-control (C2) servers and hard-coded strings, is a 

N. Korean Hackers Distribute Trojanized CyberLink Software in Supply Chain Attack

N. Korean Hackers Distribute Trojanized CyberLink Software in Supply Chain Attack
Nov 23, 2023 Software Supply Chain Attack
A North Korean state-sponsored threat actor tracked as  Diamond Sleet  is distributing a trojanized version of a legitimate application developed by a Taiwanese multimedia software developer called CyberLink to target downstream customers via a supply chain attack. "This malicious file is a legitimate CyberLink application installer that has been modified to include malicious code that downloads, decrypts, and loads a second-stage payload," the Microsoft Threat Intelligence team  said  in an analysis on Wednesday. The poisoned file, the tech giant said, is hosted on the update infrastructure owned by the company while also including checks to limit the time window for execution and bypass detection by security products. The campaign is estimated to have impacted over 100 devices across Japan, Taiwan, Canada, and the U.S. Suspicious activity associated with the modified CyberLink installer file was observed as early as October 20, 2023. The links to North Korea stem from

Cybersecurity Tactics FinServ Institutions Can Bank On in 2024

Cybersecurity Tactics FinServ Institutions Can Bank On in 2024
Feb 14, 2024Financial Security / Cyber Threats
The landscape of cybersecurity in financial services is undergoing a rapid transformation. Cybercriminals are exploiting advanced technologies and methodologies, making traditional security measures obsolete. The challenges are compounded for community banks that must safeguard sensitive financial data against the same level of sophisticated threats as larger institutions, but often with more limited resources. The FinServ Threat Landscape Recent trends show an alarming increase in sophisticated cyber-attacks. Cybercriminals now deploy advanced techniques like deep fake technology and AI-powered attacks, making it increasingly difficult for banks to differentiate between legitimate and malicious activities. These developments necessitate a shift towards more sophisticated and adaptive cybersecurity measures. Take these industry statistics, for example. Financial firms report 703 cyberattack attempts per week.1 On average, 270 attacks (entailing unauthorized access of data, appl

North Korean Hackers Pose as Job Recruiters and Seekers in Malware Campaigns

North Korean Hackers Pose as Job Recruiters and Seekers in Malware Campaigns
Nov 22, 2023 Cyber Espionage / Social Engineering
North Korean threat actors have been linked to two campaigns in which they masquerade as both job recruiters and seekers to distribute malware and obtain unauthorized employment with organizations based in the U.S. and other parts of the world. The activity clusters have been codenamed Contagious Interview and Wagemole, respectively, by Palo Alto Networks Unit 42. While the first set of attacks aims to "infect software developers with malware through a fictitious job interview," the latter is designed for financial gain and espionage. "The first campaign's objective is likely cryptocurrency theft and using compromised targets as a staging environment for additional attacks," the cybersecurity company  said . The fraudulent job-seeking activity, on the other hand, involves the use of a GitHub repository to host resumes with forged identities that impersonate individuals of various nationalities. The Contagious Interview attacks pave the way for two hitherto undocumented cross-plat

The Critical State of AI in the Cloud

cyber security
websiteWiz.ioArtificial Intelligence / Cloud Security
Wiz Research reveals the explosive growth of AI adoption and what 150,000+ cloud accounts revealed about the AI surge.

LockBit Ransomware Exploiting Critical Citrix Bleed Vulnerability to Break In

LockBit Ransomware Exploiting Critical Citrix Bleed Vulnerability to Break In
Nov 22, 2023 Threat Analysis / Vulnerability
Multiple threat actors, including LockBit ransomware affiliates, are  actively exploiting  a recently disclosed critical security flaw in Citrix NetScaler application delivery control (ADC) and Gateway appliances to obtain initial access to target environments. The joint advisory comes from the U.S. Cybersecurity and Infrastructure Security Agency (CISA), Federal Bureau of Investigation (FBI), Multi-State Information Sharing and Analysis Center (MS-ISAC), and Australian Signals Directorate's Australian Cyber Security Center (ASD's ACSC). "Citrix Bleed, known to be leveraged by LockBit 3.0 affiliates, allows threat actors to bypass password requirements and multifactor authentication (MFA), leading to successful session hijacking of legitimate user sessions on Citrix NetScaler web application delivery control (ADC) and Gateway appliances," the agencies  said . "Through the takeover of legitimate user sessions, malicious actors acquire elevated permissions to

Play Ransomware Goes Commercial - Now Offered as a Service to Cybercriminals

Play Ransomware Goes Commercial - Now Offered as a Service to Cybercriminals
Nov 21, 2023 Ransomware-as-a-service
The ransomware strain known as  Play  is now being offered to other threat actors "as a service," new evidence unearthed by Adlumin has revealed. "The unusual lack of even small variations between attacks suggests that they are being carried out by affiliates who have purchased the ransomware-as-a-service (RaaS) and are following step-by-step instructions from playbooks delivered with it," the cybersecurity company said in a report shared with The Hacker News. The findings are based on various Play ransomware attacks tracked by Adlumin spanning different sectors that incorporated almost identical tactics and in the same sequence. This includes the use of the public music folder (C:\...\public\music) to hide the malicious file, the same password to create high-privilege accounts, and both attacks, and the same commands. Play , also called Balloonfly and PlayCrypt, first came to light in June 2022, leveraging security flaws in Microsoft Exchange Server – i.e., 

New Agent Tesla Malware Variant Using ZPAQ Compression in Email Attacks

New Agent Tesla Malware Variant Using ZPAQ Compression in Email Attacks
Nov 21, 2023 Malware Threat / Data Privacy
A new variant of the  Agent Tesla  malware has been observed delivered via a lure file with the  ZPAQ compression format  to harvest data from several email clients and nearly 40 web browsers. "ZPAQ is a file compression format that offers a better compression ratio and journaling function compared to widely used formats like ZIP and RAR," G Data malware analyst Anna Lvova  said  in a Monday analysis. "That means that ZPAQ archives can be smaller, saving storage space and bandwidth when transferring files. However, ZPAQ has the biggest disadvantage: limited software support." First appearing in 2014, Agent Tesla is a  keylogger  and  remote access trojan  (RAT) written in .NET that's  offered  to other threat actors as part of a malware-as-a-service (MaaS) model. It's often used as a first-stage payload, providing remote access to a compromised system and utilized to download more sophisticated second-stage tools such as ransomware. Agent Tesla is typ

How Multi-Stage Phishing Attacks Exploit QRs, CAPTCHAs, and Steganography

How Multi-Stage Phishing Attacks Exploit QRs, CAPTCHAs, and Steganography
Nov 21, 2023 Cybercrime / Malware Analysis
Phishing attacks are steadily becoming more sophisticated, with cybercriminals investing in new ways of deceiving victims into revealing sensitive information or installing malicious software. One of the latest trends in phishing is the use of QR codes, CAPTCHAs, and steganography. See how they are carried out and learn to detect them. Quishing Quishing, a phishing technique resulting from the combination of "QR" and "phishing," has become a popular weapon for cybercriminals in 2023. By concealing malicious links within QR codes, attackers can evade traditional spam filters, which are primarily geared towards identifying text-based phishing attempts. The inability of many security tools to decipher the content of QR codes further makes this method a go-to choice for cybercriminals. An email containing a QR code with a malicious link Analyzing a QR code with an embedded malicious link in a safe environment is easy with  ANY.RUN : Simply open  this task  in th

Malicious Apps Disguised as Banks and Government Agencies Targeting Indian Android Users

Malicious Apps Disguised as Banks and Government Agencies Targeting Indian Android Users
Nov 21, 2023 Android Security / Cryptocurrency
Android smartphone users in India are the target of a new malware campaign that employs social engineering lures to install fraudulent apps that are capable of harvesting sensitive data. "Using social media platforms like WhatsApp and Telegram, attackers are sending messages designed to lure users into installing a malicious app on their mobile device by impersonating legitimate organizations, such as banks, government services, and utilities," Microsoft threat intelligence researchers Abhishek Pustakala, Harshita Tripathi, and Shivang Desai  said  in a Monday analysis. The ultimate goal of the operation is to capture banking details, payment card information, account credentials, and other personal data. The attack chains involve sharing malicious APK files via social media messages sent on WhatsApp and Telegram by falsely presenting them as banking apps and inducing a sense of urgency by claiming that the targets' bank accounts will be blocked unless they update their permanent a

Mustang Panda Hackers Targets Philippines Government Amid South China Sea Tensions

Mustang Panda Hackers Targets Philippines Government Amid South China Sea Tensions
Nov 21, 2023 Cyber Attack / Cyber Espionage
The China-linked Mustang Panda actor has been linked to a cyber attack targeting a Philippines government entity amid  rising tensions  between the two countries over the disputed South China Sea. Palo Alto Networks Unit 42 attributed the adversarial collective to three campaigns in August 2023, primarily singling out organizations in the South Pacific. "The campaigns leveraged legitimate software including Solid PDF Creator and SmadavProtect (an Indonesian-based antivirus solution) to sideload malicious files," the company  said . "Threat authors also creatively configured the malware to impersonate legitimate Microsoft traffic for command-and-control (C2) connections." Mustang Panda, also tracked under the names Bronze President, Camaro Dragon, Earth Preta, RedDelta, and Stately Taurus, is assessed to be a Chinese advanced persistent threat (APT) active since at least 2012,  orchestrating   cyber espionage   campaigns  targeting non-governmental organization

NetSupport RAT Infections on the Rise - Targeting Government and Business Sectors

NetSupport RAT Infections on the Rise - Targeting Government and Business Sectors
Nov 20, 2023 Malware / Network Security
Threat actors are targeting the education, government and business services sectors with a remote access trojan called  NetSupport RAT . "The delivery mechanisms for the NetSupport RAT encompass fraudulent updates, drive-by downloads, utilization of malware loaders (such as  GHOSTPULSE ), and various forms of phishing campaigns," VMware Carbon Black researchers said in a report shared with The Hacker News. The cybersecurity firm said it detected no less than 15 new infections related to NetSupport RAT in the last few weeks.  While NetSupport Manager started off as a  legitimate remote administration tool  for technical assistance and support, malicious actors have misappropriated the tool to their own advantage, using it as a beachhead for subsequent attacks. NetSupport RAT is typically downloaded onto a victim's computer via deceptive websites and fake browser updates. In August 2022, Sucuri  detailed  a campaign in which compromised WordPress sites were being us

DarkGate and PikaBot Malware Resurrect QakBot's Tactics in New Phishing Attacks

DarkGate and PikaBot Malware Resurrect QakBot's Tactics in New Phishing Attacks
Nov 20, 2023 Threat Analysis / Malware
Phishing campaigns delivering malware families such as DarkGate and PikaBot are following the same tactics previously used in attacks leveraging the now-defunct QakBot trojan. "These include hijacked email threads as the initial infection, URLs with unique patterns that limit user access, and an infection chain nearly identical to what we have seen with QakBot delivery," Cofense  said  in a report shared with The Hacker News. "The malware families used also follow suit to what we would expect QakBot affiliates to use." QakBot, also called QBot and Pinkslipbot, was  shut down  as part of a coordinated law enforcement effort codenamed Operation Duck Hunt earlier this August. The use of DarkGate and PikaBot in these campaigns is not surprising as they can both act as conduits to deliver additional payloads to compromised hosts, making them both an attractive option for cybercriminals. PikaBot's parallels to QakBot were  previously highlighted  by Zscaler in its analysis of the malw

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

8Base Group Deploying New Phobos Ransomware Variant via SmokeLoader

8Base Group Deploying New Phobos Ransomware Variant via SmokeLoader
Nov 18, 2023 Ransomware / Endpoint Security
The threat actors behind the  8Base ransomware  are leveraging a variant of the Phobos ransomware to conduct their financially motivated attacks. The findings come from Cisco Talos, which has recorded an increase in activity carried out by the cybercriminals. "Most of the group's Phobos variants are distributed by SmokeLoader, a backdoor trojan," security researcher Guilherme Venere said in an exhaustive  two-part   analysis  published Friday. "This commodity loader typically drops or downloads additional payloads when deployed. In 8Base campaigns, however, it has the ransomware component embedded in its encrypted payloads, which is then decrypted and loaded into the SmokeLoader process' memory." 8Base came into sharp focus in mid-2023, when a similar spike in activity was observed by the cybersecurity community. It's said to be active at least since March 2022. A  previous analysis  from VMware Carbon Black in June 2023 identified parallels between 8Base and Ranso

Russian Cyber Espionage Group Deploys LitterDrifter USB Worm in Targeted Attacks

Russian Cyber Espionage Group Deploys LitterDrifter USB Worm in Targeted Attacks
Nov 18, 2023 Cyber Attack / USB Worm
Russian cyber espionage actors affiliated with the Federal Security Service (FSB) have been observed using a USB propagating worm called  LitterDrifter  in attacks targeting Ukrainian entities. Check Point, which  detailed  Gamaredon's (aka Aqua Blizzard, Iron Tilden, Primitive Bear, Shuckworm, and Winterflounder) latest tactics, branded the group as engaging in large-scale campaigns that are followed by "data collection efforts aimed at specific targets, whose selection is likely motivated by espionage goals." The LitterDrifter worm packs in two main features: automatically spreading the malware via connected USB drives as well as communicating with the threat actor's command-and-control (C&C) servers. It's also suspected to be an evolution of a PowerShell-based USB worm that was previously  disclosed  by Symantec in June 2023. Written in VBS, the spreader module is responsible for distributing the worm as a hidden file in a USB drive together with a deco

Beware: Malicious Google Ads Trick WinSCP Users into Installing Malware

Beware: Malicious Google Ads Trick WinSCP Users into Installing Malware
Nov 17, 2023 Malvertising / Malware
Threat actors are leveraging manipulated search results and bogus Google ads that trick users who are looking to download legitimate software such as WinSCP into installing malware instead. Cybersecurity company Securonix is tracking the ongoing activity under the name  SEO#LURKER . "The malicious advertisement directs the user to a compromised WordPress website gameeweb[.]com, which redirects the user to an attacker-controlled phishing site," security researchers Den Iuzvyk, Tim Peck, and Oleg Kolesnikov  said  in a report shared with The Hacker News. The threat actors are believed to leverage Google's Dynamic Search Ads ( DSAs ), which automatically generates ads based on a site's content to serve the malicious ads that take the victims to the infected site. The ultimate goal of the complex multi-stage attack chain is to entice users into clicking on the fake, lookalike WinSCP website, winccp[.]net, and download the malware. "Traffic from the gaweeweb[.]com website to the fake

27 Malicious PyPI Packages with Thousands of Downloads Found Targeting IT Experts

27 Malicious PyPI Packages with Thousands of Downloads Found Targeting IT Experts
Nov 17, 2023 Software Supply Chain / API Security
An unknown threat actor has been observed publishing typosquat packages to the Python Package Index (PyPI) repository for nearly six months with an aim to deliver malware capable of gaining persistence, stealing sensitive data, and accessing cryptocurrency wallets for financial gain. The 27 packages, which masqueraded as popular legitimate Python libraries, attracted thousands of downloads, Checkmarx said in a new report. A majority of the downloads originated from the U.S., China, France, Hong Kong, Germany, Russia, Ireland, Singapore, the U.K., and Japan. "A defining characteristic of this attack was the utilization of steganography to hide a malicious payload within an innocent-looking image file, which increased the stealthiness of the attack," the software supply chain security firm  said . Some of the packages are pyefflorer, pyminor, pyowler, pystallerer, pystob, and pywool, the last of which was planted on May 13, 2023. A common denominator to these packages is t
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