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Numando: A New Banking Trojan Targeting Latin American Users

Numando: A New Banking Trojan Targeting Latin American Users

September 19, 2021Ravie Lakshmanan
A newly spotted banking trojan has been caught leveraging legitimate platforms like YouTube and Pastebin to store its encrypted, remote configuration and commandeer infected Windows systems, making it the latest to join the  long list of malware  targeting Latin America (LATAM) after Guildma, Javali, Melcoz, Grandoreiro, Mekotio, Casbaneiro, Amavaldo, Vadokrist, and Janeleiro. The threat actor behind this malware family — dubbed " Numando " — is believed to have been active since at least 2018. "[Numando brings] interesting new techniques to the pool of Latin American banking trojans' tricks, like using seemingly useless ZIP archives or bundling payloads with decoy BMP images," ESET researchers  said  in a technical analysis published on Friday. "Geographically, it focuses almost exclusively on Brazil with rare campaigns in Mexico and Spain." Written in Delphi, the malware comes with an array of backdoor capabilities that allow it to control compr
Experts Uncover Malware Attacks Targeting Corporate Networks in Latin America

Experts Uncover Malware Attacks Targeting Corporate Networks in Latin America

July 08, 2021Ravie Lakshmanan
Cybersecurity researchers on Thursday took the wraps off a new, ongoing espionage campaign targeting corporate networks in Spanish-speaking countries, specifically Venezuela, to spy on its victims. Dubbed " Bandidos " by ESET owing to the use of an upgraded variant of Bandook malware, the primary targets of the threat actor are corporate networks in the South American country spanning across manufacturing, construction, healthcare, software services, and retail sectors. Written in both Delphi and C++,  Bandook  has a history of being sold as a commercial remote access trojan (RAT) dating all the way back to 2005. Since then, numerous variants have emerged on the threat landscape and put to use in different surveillance campaigns in 2015 and 2017, allegedly by a cyber-mercenary group known as Dark Caracal on behalf of government interests in Kazakhstan and Lebanon. In a continuing resurgence of the Bandook Trojan, Check Point last year  disclosed  three new samples — one
Malware Can Use This Trick to Bypass Ransomware Defense in Antivirus Solutions

Malware Can Use This Trick to Bypass Ransomware Defense in Antivirus Solutions

June 01, 2021Ravie Lakshmanan
Researchers have disclosed significant security weaknesses in popular antivirus software applications that could be abused to deactivate their protections and take control of allow-listed applications to perform nefarious operations on behalf of the malware to defeat anti-ransomware defenses. The twin attacks,  detailed  by academics from the University of Luxembourg and the University of London, are aimed at circumventing the protected folder feature offered by antivirus programs to encrypt files (aka "Cut-and-Mouse") and disabling their real-time protection by simulating mouse "click" events (aka "Ghost Control"). "Antivirus software providers always offer high levels of security, and they are an essential element in the everyday struggle against criminals,"  said  Prof. Gabriele Lenzini, chief scientist at the Interdisciplinary Center for Security, Reliability, and Trust at the University of Luxembourg. "But they are competing with cri
Microsoft Warns of Data Stealing Malware That Pretends to Be Ransomware

Microsoft Warns of Data Stealing Malware That Pretends to Be Ransomware

May 21, 2021Ravie Lakshmanan
Microsoft on Thursday warned of a "massive email campaign" that's pushing a Java-based STRRAT malware to steal confidential data from infected systems while disguising itself as a ransomware infection. "This RAT is infamous for its ransomware-like behavior of appending the file name extension .crimson to files without actually encrypting them," the Microsoft Security Intelligence team  said  in a series of tweets. The new wave of attacks, which the company spotted last week, commences with spam emails sent from compromised email accounts with "Outgoing Payments" in the subject line, luring the recipients into opening malicious PDF documents that claim to be remittances, but in reality, connect to a rogue domain to download the STRRAT malware. Besides establishing connections to a command-and-control server during execution, the malware comes with a range of features that allow it to collect browser passwords, log keystrokes, and run remote command
Emotet Malware Destroys Itself From All Infected Computers

Emotet Malware Destroys Itself From All Infected Computers

April 26, 2021Ravie Lakshmanan
Emotet, the notorious email-based Windows malware behind several botnet-driven spam campaigns and ransomware attacks, was automatically wiped from infected computers en masse following a European law enforcement operation. The development comes three months after a coordinated disruption of Emotet as part of " Operation Ladybird " to seize control of servers used to run and maintain the malware network. The orchestrated effort saw at least 700 servers associated with the botnet's infrastructure neutered from the inside, thus preventing further exploitation. Law enforcement authorities from the Netherlands, Germany, the U.S., U.K., France, Lithuania, Canada, and Ukraine were involved in the international action. Previously, the Dutch police, which seized two central servers located in the country, said it had deployed a software update to counter the threat posed by Emotet effectively. "All infected computer systems will automatically retrieve the update there, a
Over 750,000 Users Downloaded New Billing Fraud Apps From Google Play Store

Over 750,000 Users Downloaded New Billing Fraud Apps From Google Play Store

April 20, 2021Ravie Lakshmanan
Researchers have uncovered a new set of fraudulent Android apps in the Google Play store that were found to hijack SMS message notifications for carrying out billing fraud. The apps in question primarily targeted users in Southwest Asia and the Arabian Peninsula, attracting a total of 700,000 downloads before they were discovered and removed from the platform. The findings were reported independently by cybersecurity firms  Trend Micro  and  McAfee . "Posing as photo editors, wallpapers, puzzles, keyboard skins, and other camera-related apps, the malware embedded in these fraudulent apps hijack SMS message notifications and then make unauthorized purchases," researchers from McAfee said in a Monday write-up. The fraudulent apps belong to the so-called " Joker " (aka Bread) malware, which has been found to repeatedly sneak past Google Play defenses over the past four years, resulting in Google removing no fewer than 1,700 infected apps from the Play Store as of
Gigaset Android Update Server Hacked to Install Malware on Users' Devices

Gigaset Android Update Server Hacked to Install Malware on Users' Devices

April 09, 2021Ravie Lakshmanan
Gigaset has revealed a malware infection discovered in its Android devices was the result of a compromise of a server belonging to an external update service provider. Impacting older smartphone models — GS100, GS160, GS170, GS180, GS270 (plus), and GS370 (plus) series — the malware took the form of multiple  unwanted apps  that were downloaded and installed through a pre-installed system update app. The infections are said to have occurred starting  March 27 . The German manufacturer of telecommunications devices said it took steps to alert the update service provider of the issue, following which further infections were prevented on April 7. "Measures have been taken to automatically rid infected devices of the malware. In order for this to happen the devices must be connected to the internet (WLAN, WiFi or mobile data). We also recommend connecting the devices to their chargers. Affected devices should automatically be freed from the malware within 8 hours," the comp
New 'Silver Sparrow' Malware Infected Nearly 30,000 Apple Macs

New 'Silver Sparrow' Malware Infected Nearly 30,000 Apple Macs

February 21, 2021Ravie Lakshmanan
Days after the  first malware  targeting Apple M1 chips was discovered in the wild, researchers have disclosed yet another previously undetected piece of malicious software that was found in about 30,000 Macs running Intel x86_64 and the iPhone maker's M1 processors. However, the ultimate goal of the operation remains something of a conundrum, what with the lack of a next-stage or final payload leaving researchers unsure of its distribution timeline and whether the threat is just under active development. Calling the malware "Silver Sparrow," cybersecurity firm Red Canary said it identified two different versions of the malware — one compiled only for Intel x86_64 and uploaded to VirusTotal on August 31, 2020 ( version 1 ), and a second variant submitted to the database on January 22 that's compatible with both Intel x86_64 and M1 ARM64 architectures ( version 2 ). Adding to the mystery, the x86_64 binary, upon execution, simply displays the message "Hello,
Researchers Unmask Hackers Behind APOMacroSploit Malware Builder

Researchers Unmask Hackers Behind APOMacroSploit Malware Builder

February 17, 2021Ravie Lakshmanan
Cybersecurity researchers have disclosed a new kind of Office malware distributed as part of a malicious email campaign that targeted more than 80 customers worldwide in an attempt to control victim machines and steal information remotely. The tool — dubbed " APOMacroSploit " — is a macro exploit generator that allows the user to create an Excel document capable of bypassing antivirus software, Windows Antimalware Scan Interface (AMSI), and even Gmail and other email-based phishing detection. APOMacroSploit is believed to be the work of two French-based threat actors "Apocaliptique" and "Nitrix," who are estimated to have made at least $5000 in less than two months selling the product on HackForums.net. About 40 hackers in total are said to be behind the operation, utilizing 100 different email senders in a slew of attacks targeting users in more than 30 different countries. The attacks were spotted for the first time at the end of November 2020, acco
Payment Card Skimmer Group Using Raccoon Info-Stealer to Siphon Off Data

Payment Card Skimmer Group Using Raccoon Info-Stealer to Siphon Off Data

December 07, 2020Ravie Lakshmanan
A cybercrime group known for targeting e-commerce websites unleashed a "multi-stage malicious campaign" earlier this year designed with an intent to distribute information stealers and JavaScript-based payment skimmers. In a new report published today and shared with The Hacker News, Singapore-based cybersecurity firm Group-IB attributed the operation to the same group that's been linked to a separate attack aimed at online merchants using password-stealing malware to infect their websites with  FakeSecurity JavaScript-sniffers  (JS-sniffers). The campaign progressed in four waves, starting in February and ending in September, with the operators relying on specially-crafted phishing pages and lure documents laced with malicious macros to download Vidar and Raccoon information stealers onto victim systems. The ultimate goal of the attack, the researchers noted, was to steal payment and user data via several attack vectors and tools to deliver the malware. The fake we
Digitally Signed Bandook Malware Once Again Targets Multiple Sectors

Digitally Signed Bandook Malware Once Again Targets Multiple Sectors

November 27, 2020Ravie Lakshmanan
A cyberespionage group with suspected ties to the Kazakh and Lebanese governments has unleashed a new wave of attacks against a multitude of industries with a retooled version of a 13-year-old backdoor Trojan. Check Point Research called out hackers affiliated with a group named  Dark Caracal  in a  new report  published yesterday for their efforts to deploy "dozens of digitally signed variants" of the  Bandook  Windows Trojan over the past year, thus once again "reigniting interest in this old malware family." The different verticals singled out by the threat actor include government, financial, energy, food industry, healthcare, education, IT, and legal institutions located in Chile, Cyprus, Germany, Indonesia, Italy, Singapore, Switzerland, Turkey, and the US. The unusually large variety of targeted markets and locations "reinforces a previous hypothesis that the malware is not developed in-house and used by a single entity, but is part of an offensive
Microsoft and Other Tech Companies Take Down TrickBot Botnet

Microsoft and Other Tech Companies Take Down TrickBot Botnet

October 13, 2020Ravie Lakshmanan
Days after the US Government took steps to disrupt the notorious TrickBot botnet , a group of cybersecurity and tech companies has detailed a separate coordinated effort to take down the malware's back-end infrastructure. The joint collaboration, which involved Microsoft's Digital Crimes Unit , Lumen's Black Lotus Labs , ESET , Financial Services Information Sharing and Analysis Center ( FS-ISAC ), NTT , and Broadcom's Symantec , was undertaken after their request to halt TrickBot's operations was granted by the US District Court for the Eastern District of Virginia. The development comes after the US Cyber Command mounted a campaign to thwart TrickBot's spread over concerns of ransomware attacks targeting voting systems ahead of the presidential elections next month. Attempts aimed at impeding the botnet were first reported by KrebsOnSecurity early this month. Microsoft and its partners analyzed over 186,000 TrickBot samples, using it to track down the m
Beware: New Android Spyware Found Posing as Telegram and Threema Apps

Beware: New Android Spyware Found Posing as Telegram and Threema Apps

October 01, 2020Ravie Lakshmanan
A hacking group known for its attacks in the Middle East, at least since 2017, has recently been found impersonating legitimate messaging apps such as Telegram and Threema to infect Android devices with a new, previously undocumented malware. "Compared to the versions documented in 2017, Android/SpyC23.A has extended spying functionality, including reading notifications from messaging apps, call recording and screen recording, and new stealth features, such as dismissing notifications from built-in Android security apps," cybersecurity firm ESET  said  in a Wednesday analysis. First detailed by Qihoo 360 in 2017 under the moniker  Two-tailed Scorpion (aka APT-C-23 or Desert Scorpion), the mobile malware has been deemed "surveillanceware" for its abilities to spy on the devices of targeted individuals, exfiltrating call logs, contacts, location, messages, photos, and other sensitive documents in the process. In 2018, Symantec discovered a  newer variant  of the
QakBot Banking Trojan Returned With New Sneaky Tricks to Steal Your Money

QakBot Banking Trojan Returned With New Sneaky Tricks to Steal Your Money

August 27, 2020Ravie Lakshmanan
A notorious banking trojan aimed at stealing bank account credentials and other financial information has now come back with new tricks up its sleeve to target government, military, and manufacturing sectors in the US and Europe, according to new research. In an analysis released by Check Point Research today, the latest wave of Qbot activity appears to have dovetailed with the return of Emotet — another email-based malware behind several botnet-driven spam campaigns and ransomware attacks — last month, with the new sample capable of covertly gathering all email threads from a victim's Outlook client and using them for later malspam campaigns. "These days Qbot is much more dangerous than it was previously — it has an active malspam campaign which infects organizations, and it manages to use a 'third-party' infection infrastructure like Emotet's to spread the threat even further," the cybersecurity firm said. Using Hijacked Email Threads as Lures F
New USBCulprit Espionage Tool Steals Data From Air-Gapped Computers

New USBCulprit Espionage Tool Steals Data From Air-Gapped Computers

June 04, 2020Ravie Lakshmanan
A Chinese threat actor has developed new capabilities to target air-gapped systems in an attempt to exfiltrate sensitive data for espionage, according to a newly published research by Kaspersky yesterday. The APT, known as Cycldek, Goblin Panda, or Conimes, employs an extensive toolset for lateral movement and information stealing in victim networks, including previously unreported custom tools, tactics, and procedures in attacks against government agencies in Vietnam, Thailand, and Laos. "One of the newly revealed tools is named USBCulprit and has been found to rely on USB media in order to exfiltrate victim data," Kaspersky said. "This may suggest Cycldek is trying to reach air-gapped networks in victim environments or relies on physical presence for the same purpose." First observed by CrowdStrike in 2013, Cycldek has a long history of singling out defense, energy, and government sectors in Southeast Asia, particularly Vietnam, using decoy documents th
Watch Out: Android Apps in Google Play Store Capitalizing on Coronavirus Outbreak

Watch Out: Android Apps in Google Play Store Capitalizing on Coronavirus Outbreak

March 26, 2020Ravie Lakshmanan
Preying on public fears, the ongoing coronavirus outbreak is proving to be a goldmine of opportunity for attackers to stage a variety of malware attacks, phishing campaigns, and create scam sites and malicious tracker apps. Now in a fresh twist, third-party Android app developers too have begun to take advantage of the situation to use coronavirus-related keywords in their app names, descriptions, or in the package names so as to drop malware, perpetrate financial theft and rank higher in Google Play Store searches related to the topic. "Most malicious apps found are bundle threats that range from ransomware to SMS-sending malware, and even spyware designed to clean out the contents of victims' devices for personal or financial data," Bitdefender researchers said in a telemetry analysis report shared with The Hacker News. The find by Bitdefender is the latest in an avalanche of digital threats piggybacking on the coronavirus pandemic. Using Coronavirus-Relat
Emotet Malware Now Hacks Nearby Wi-Fi Networks to Infect New Victims

Emotet Malware Now Hacks Nearby Wi-Fi Networks to Infect New Victims

February 12, 2020Ravie Lakshmanan
Emotet, the notorious trojan behind a number of botnet-driven spam campaigns and ransomware attacks, has found a new attack vector: using already infected devices to identify new victims that are connected to nearby Wi-Fi networks. According to researchers at Binary Defense , the newly discovered Emotet sample leverages a "Wi-Fi spreader" module to scan Wi-Fi networks, and then attempts to infect devices that are connected to them. The cybersecurity firm said the Wi-Fi spreader has a timestamp of April 16, 2018, indicating the spreading behavior has been running "unnoticed" for close to two years until it was detected for the first time last month. The development marks an escalation of Emotet's capabilities, as networks in close physical proximity to the original victim are now susceptible to infection. How Does Emotet's Wi-Fi Spreader Module Work? The updated version of the malware works by leveraging an already compromised host to list all
Chinese Hackers Compromise Telecom Servers to Spy on SMS Messages

Chinese Hackers Compromise Telecom Servers to Spy on SMS Messages

October 31, 2019Swati Khandelwal
A group of Chinese hackers carrying out political espionage for Beijing has been found targeting telecommunications companies with a new piece of malware designed to spy on text messages sent or received by highly targeted individuals. Dubbed " MessageTap ," the backdoor malware is a 64-bit ELF data miner that has recently been discovered installed on a Linux-based Short Message Service Center (SMSC) server of an unnamed telecommunications company. According to a recent report published by FireEye's Mandiant firm, MessageTap has been created and used by APT41 , a prolific Chinese hacking group that carries out state-sponsored espionage operations and has also been found involved in financially motivated attacks. In mobile telephone networks, SMSC servers act as a middle-man service responsible for handling the SMS operations by routing messages between senders and recipients. Since SMSes are not designed to be encrypted, neither on transmitting nor on the telec
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