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E-commerce industries in South Korea and the U.S. are at the receiving end of an ongoing GuLoader malware campaign, cybersecurity firm Trellix disclosed late last month. The malspam activity is notable for transitioning away from malware-laced Microsoft Word documents to NSIS executable files for loading the malware. Other countries targeted as part of the campaign include Germany, Saudi Arabia, Taiwan and Japan. NSIS , short for Nullsoft Scriptable Install System, is a script-driven open source tool used to develop installers for the Windows operating system. While attack chains in 2021 leveraged a ZIP archive containing a macro-laced Word document to drop an executable file tasked with loading GuLoader, the new phishing wave employs NSIS files embedded within ZIP or ISO images to activate the infection. "Embedding malicious executable files in archives and images can help threat actors evade detection," Trellix researcher Nico Paulo Yturriaga  said . Over the cours

An ongoing malvertising campaign is being used to distribute virtualized .NET loaders that are designed to deploy the FormBook information-stealing malware. "The loaders, dubbed MalVirt, use obfuscated virtualization for anti-analysis and evasion along with the Windows Process Explorer driver for terminating processes," SentinelOne researchers Aleksandar Milenkoski and Tom Hegel  said  in a technical write-up. The shift to Google malvertising is the latest example of how crimeware actors are  devising alternate delivery routes  to distribute malware ever since Microsoft announced plans to block the execution of macros in Office by default from files downloaded from the internet. Malvertising entails placing rogue search engine advertisements in hopes of tricking users searching for popular software like Blender into downloading the trojanized software. The MalVirt loaders, which are implemented in .NET, use the legitimate  KoiVM  virtualizing protector for .NET applicati

The Iranian nation-state hacking group known as  OilRig  has continued to target government organizations in the Middle East as part of a cyber espionage campaign that leverages a new backdoor to exfiltrate data. "The campaign abuses legitimate but compromised email accounts to send stolen data to external mail accounts controlled by the attackers," Trend Micro researchers Mohamed Fahmy, Sherif Magdy, and Mahmoud Zohdy  said . While the technique in itself is not unheard of, the development marks the first time OilRig has adopted it in its playbook, indicating the continued evolution of its methods to bypass security protections. The advanced persistent threat (APT) group, also referred to as APT34, Cobalt Gypsy, Europium, and Helix Kitten, has been  documented  for its targeted phishing attacks in the Middle East since at least 2014. Linked to Iran's Ministry of Intelligence and Security (MOIS), the group is known to use a diverse toolset in its operations, with re

The State Cyber Protection Centre (SCPC) of Ukraine has called out the Russian state-sponsored threat actor known as  Gamaredon  for its targeted cyber attacks on public authorities and critical information infrastructure in the country. The advanced persistent threat, also known as Actinium, Armageddon, Iron Tilden, Primitive Bear, Shuckworm, Trident Ursa, and UAC-0010, has a  track record  of  striking   Ukrainian entities  dating as far back as 2013. "UAC-0010 group's ongoing activity is characterized by a multi-step download approach and executing payloads of the spyware used to maintain control over infected hosts," the SCPC  said . "For now, the UAC-0010 group uses  GammaLoad and GammaSteel  spyware in their campaigns." GammaLoad is a VBScript dropper malware engineered to download next-stage VBScript from a remote server. GammaSteel is a PowerShell script that's capable of conducting reconnaissance and executing additional commands. The goal of t

At least 1,200 Redis database servers worldwide have been corralled into a botnet using an "elusive and severe threat" dubbed HeadCrab since early September 2021. "This advanced threat actor utilizes a state-of-the-art, custom-made malware that is undetectable by agentless and traditional anti-virus solutions to compromise a large number of Redis servers," Aqua security researcher Asaf Eitani  said  in a Wednesday report. A significant concentration of infections has been recorded in China, Malaysia, India, Germany, the U.K., and the U.S. to date. The origins of the threat actor are presently unknown. The findings come two months after the cloud security firm shed light on a Go-based malware codenamed  Redigo  that has been found compromising Redis servers. The attack is designed to target Redis servers that are exposed to the internet, followed by issuing a  SLAVEOF command  from another Redis server that's already under the adversary's control. In

A new attack campaign has been targeting the gaming and gambling sectors since at least September 2022, just as the ICE London 2023 gaming industry trade fair event is scheduled to kick off next week. Israeli cybersecurity company Security Joes is tracking the activity cluster under the name  Ice Breaker , stating the intrusions employ clever social engineering tactics to deploy a JavaScript backdoor. The attack sequence proceeds as follows: The threat actor poses as a customer while initiating a conversation with a support agent of a gaming company under the pretext of having account registration issues. The adversary then urges the individual on the other end to open a screenshot image hosted on Dropbox. Security Joes said that the threat actor is "well-aware of the fact that the customer service is human-operated." Clicking the purported screenshot link sent in the chat leads to the retrieval of an LNK payload or, alternatively, a VBScript file as a backup option,

The Brazilian threat actors behind an advanced and modular point-of-sale (PoS) malware known as  Prilex  have reared their head once again with new updates that allow it to block contactless payment transactions. Russian cybersecurity firm Kaspersky  said  it detected three versions of Prilex (06.03.8080, 06.03.8072, and 06.03.8070) that are capable of targeting NFC-enabled credit cards, taking its criminal scheme a notch higher. Having evolved out of ATM-focused malware into PoS malware over the years since going operational in 2014, the threat actor has steadily incorporated new features that are designed to facilitate credit card fraud, including a technique called  GHOST transactions . While contactless payments have taken off in a big way, in part due to the COVID-19 pandemic, the underlying motive behind the new functionality is to disable the feature so as to force the user to insert the card into the PIN pad. To that end, the latest version of Prilex, which Kaspersky disc

A shellcode-based  packer  dubbed  TrickGate  has been successfully operating without attracting notice for over six years, while enabling threat actors to deploy a wide range of malware such as TrickBot, Emotet, AZORult, Agent Tesla, FormBook, Cerber, Maze, and REvil over the years. "TrickGate managed to stay under the radar for years because it is transformative – it undergoes changes periodically," Check Point Research's Arie Olshtein  said , calling it a "master of disguises." Offered as a service to other threat actors since at least late 2016, TrickGate helps conceal payloads behind a layer of wrapper code in an attempt to get past security solutions installed on a host. Packers can also function as crypters by encrypting the malware as an obfuscation mechanism. "Packers have different features that allow them to circumvent detection mechanisms by appearing as benign files, being difficult to reverse engineer, or incorporating sandbox evasion tec

A new Golang-based information stealer malware dubbed  Titan Stealer  is being advertised by threat actors through their Telegram channel. "The stealer is capable of stealing a variety of information from infected Windows machines, including credential data from browsers and crypto wallets, FTP client details, screenshots, system information, and grabbed files," Uptycs security researchers Karthickkumar Kathiresan and Shilpesh Trivedi  said  in a recent report. Details of the malware were  first documented  by cybersecurity researcher Will Thomas (@BushidoToken) in November 2022 by querying the IoT search engine Shodan. Titan is offered as a builder, enabling customers to customize the malware binary to include specific functionalities and the kind of information to be exfiltrated from a victim's machine. The malware, upon execution, employs a technique known as  process hollowing  to inject the malicious payload into the memory of a legitimate process known as AppLa

Researchers are warning about a spike in exploitation attempts weaponizing a now-patched critical remote code execution flaw in Realtek Jungle SDK since the start of August 2022. According to Palo Alto Networks Unit 42, the ongoing campaign is said to have recorded 134 million exploit attempts as of December 2022, with 97% of the attacks occurring in the past four months. Close to 50% of the attacks originated from the U.S. (48.3%), followed by Vietnam (17.8%), Russia (14.6%), The Netherlands (7.4%), France (6.4%), Germany (2.3%0, and Luxembourg (1.6%). What's more, 95% of the attacks leveraging the security shortcoming that emanated from Russia singled out organizations in Australia. "Many of the attacks we observed tried to deliver malware to infect vulnerable IoT devices," Unit 42 researchers  said  in a report, adding "threat groups are using this vulnerability to carry out large-scale attacks on smart devices around the world." The vulnerability in q

The threat actors associated with the Gootkit malware have made "notable changes" to their toolset, adding new components and obfuscations to their infection chains. Google-owned Mandiant is  monitoring  the activity cluster under the moniker  UNC2565 , noting that the usage of the malware is "exclusive to this group." Gootkit , also called Gootloader, is spread through compromised websites that victims are tricked into visiting when searching for business-related documents like agreements and contracts via a technique called search engine optimization (SEO) poisoning. The purported documents take the form of ZIP archives that harbor the JavaScript malware, which, when launched, paves the way for additional payloads such as  Cobalt Strike Beacon , FONELAUNCH, and SNOWCONE. FONELAUNCH is a .NET-based loader designed to load an encoded payload into memory, whereas SNOWCONE is a downloader that's tasked with retrieving next-stage payloads, typically  IcedID ,

Cybersecurity researchers have uncovered a PlugX sample that employs sneaky methods to infect attached removable USB media devices in order to propagate the malware to additional systems. "This PlugX variant is wormable and infects USB devices in such a way that it conceals itself from the Windows operating file system," Palo Alto Networks Unit 42 researchers Mike Harbison and Jen Miller-Osborn  said . "A user would not know their USB device is infected or possibly used to exfiltrate data out of their networks." The cybersecurity company said it uncovered the artifact during an incident response effort following a Black Basta ransomware attack against an unnamed victim. Among other tools discovered in the compromised environment include the  Gootkit  malware loader and the  Brute Ratel C4  red team framework. The use of Brute Ratel by the Black Basta group was previously  highlighted  by Trend Micro in October 2022, with the software delivered as a second-stage

In what's a case of hacking the hackers, the darknet infrastructure associated with the Hive ransomware-as-a-service (RaaS) operation has been seized as part of a coordinated law enforcement effort involving 13 countries. "Law enforcement identified the decryption keys and shared them with many of the victims, helping them regain access to their data without paying the cybercriminals," Europol  said  in a statement. The U.S. Department of Justice (DoJ)  said  the Federal Bureau of Investigation (FBI) covertly infiltrated the Hive database servers in July 2022 and captured 336 decryption keys that were then handed over to companies compromised by the gang, effectively saving $130 million in ransom payments. The FBI also distributed more than 1,000 additional decryption keys to previous Hive victims, the DoJ noted, stating the agency gained access to two dedicated servers and one virtual private server at a hosting provider in California that were leased using three em

New research has linked the operations of a politically motivated hacktivist group known as Moses Staff to another nascent threat actor named  Abraham's Ax  that emerged in November 2022. This is based on "several commonalities across the iconography, videography, and leak sites used by the groups, suggesting they are likely operated by the same entity," Secureworks Counter Threat Unit (CTU)  said  in a report shared with The Hacker News. Moses Staff, tracked by the cybersecurity firm under the moniker  Cobalt Sapling , made its  first appearance  on the threat landscape in September 2021 with the goal of primarily targeting Israeli organizations. The geopolitical group is believed to be  sponsored  by the Iranian government and has since been linked to a string of espionage and sabotage attacks that make use of tools like  StrifeWater RAT  and open source utilities such as  DiskCryptor  to harvest sensitive information and lock victim data on infected hosts. The cr

The Emotet malware operation has continued to refine its tactics in an effort to fly under the radar, while also acting as a conduit for other dangerous malware such as Bumblebee and IcedID. Emotet, which officially  reemerged  in late 2021 following a coordinated takedown of its infrastructure by authorities earlier that year, has continued to be a persistent threat that's distributed via phishing emails. Attributed to a cybercrime group tracked as  TA542  (aka Gold Crestwood or Mummy Spider), the virus has  evolved  from a banking trojan to a malware distributor since its first appearance in 2014. The malware-as-a-service (MaaS) is also modular, capable of deploying an array of proprietary and freeware components that can exfiltrate sensitive information from compromised machines and carry out other post-exploitation activities. Two latest additions to Emotet's module arsenal comprise an  SMB spreader  that's designed to facilitate lateral movement using a list of h

Two security flaws have been disclosed in Samsung's Galaxy Store app for Android that could be exploited by a local attacker to stealthily install arbitrary apps or direct prospective victims to fraudulent landing pages on the web. The issues, tracked as  CVE-2023-21433 and CVE-2023-21434 , were  discovered  by NCC Group and notified to the South Korean chaebol in November and December 2022. Samsung  classified  the bugs as moderate risk and released fixes in version 4.5.49.8 shipped earlier this month. Samsung Galaxy Store, previously known as Samsung Apps and Galaxy Apps, is a dedicated app store used for Android devices manufactured by Samsung. It was launched in September 2009. The first of the two vulnerabilities is CVE-2023-21433, which could enable an already installed rogue Android app on a Samsung device to install any application available on the Galaxy Store. Samsung described it as a case of improper access control that it said has been patched with proper permiss

Threat actors associated with the Roaming Mantis attack campaign have been observed delivering an updated variant of their patent mobile malware known as Wroba to infiltrate Wi-Fi routers and undertake Domain Name System ( DNS ) hijacking. Kaspersky, which carried out an  analysis  of the malicious artifact, said the feature is designed to target specific Wi-Fi routers located in South Korea. Roaming Mantis, also known as Shaoye, is a long-running financially motivated operation that singles out Android smartphone users with malware capable of stealing bank account credentials as well as harvesting other kinds of sensitive information. Although primarily  targeting the Asian region  since 2018, the hacking crew was detected  expanding  its  victim range  to include France and Germany for the first time in early 2022 by camouflaging the malware as the Google Chrome web browser application. The attacks leverage smishing messages as the initial intrusion vector of choice to deliver

The Russian state-sponsored cyber espionage group known as Gamaredon has continued its digital onslaught against Ukraine, with recent attacks leveraging the popular messaging app Telegram to strike military and law enforcement sectors in the country. "The Gamaredon group's network infrastructure relies on multi-stage Telegram accounts for victim profiling and confirmation of geographic location, and then finally leads the victim to the next stage server for the final payload," the BlackBerry Research and Intelligence Team  said  in a report shared with The Hacker News. "This kind of technique to infect target systems is new." Gamaredon , also known by names such as Actinium, Armageddon, Iron Tilden, Primitive Bear, Shuckworm, Trident Ursa, and Winterflounder, is known for its assaults aimed at Ukrainian entities since at least 2013. Last month, Palo Alto Networks Unit 42  disclosed  the threat actor's unsuccessful attempts to break into an unnamed petrol

The threat actor behind the  BlackRock  and  ERMAC  Android banking trojans has unleashed yet another malware for rent called  Hook  that introduces new capabilities to access files stored in the devices and create a remote interactive session. ThreatFabric, in a  report  shared with The Hacker News, characterized Hook as a novel ERMAC fork that's advertised for sale for $7,000 per month while featuring "all the capabilities of its predecessor." "In addition, it also adds to its arsenal Remote Access Tooling (RAT) capabilities, joining the ranks of families such as  Octo  and  Hydra , which are capable performing a full Device Take Over (DTO), and complete a full fraud chain, from PII exfiltration to transaction, with all the intermediate steps, without the need of additional channels," the Dutch cybersecurity firm said. A majority of the financial apps targeted by the malware are located in the U.S., Spain, Australia, Poland, Canada, Turkey, the U.K., Fran