Coverage of Trojan malware examines reported incidents, technical analysis, infrastructure, disruption efforts, and defensive guidance for reducing cyber risk.
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Background for this topic.
A Trojan is malware that masquerades as legitimate, useful, or necessary software so a user or process runs it. “Trojan” describes a delivery or deception technique rather than one malware family; capabilities vary by sample and may include credential theft, surveillance, file manipulation, or remote access. Unlike self-propagating malware, a Trojan generally depends on being installed or executed through some other means.
Security analysis should identify the specific family and executable behavior rather than treating every Trojan as equivalent. Material concerns include untrusted software and tampered installers, execution under excessive privileges, and unauthorized persistence or access to sensitive data. Defenses include using trusted software sources and code-signature or application-control checks, limiting user privileges, monitoring endpoint process and network activity, and isolating suspected hosts. After detection, preserve relevant evidence, remove persistence, assess credential exposure, and investigate other affected systems before returning the device to normal use.
Weekly headline count for the current query.
Malware Targets Banks, Crypto Platforms and Social MediaNewly surfaced Android-based banking Trojan gives threat actors near-total control over infected devices, letting them steal user credentials for direct access to financial accounts, says researchers. Rokarolla tricks users into side-loading malicious versions of popular, high traffic apps.
Suspected Russian Crime Group Built Resilient Command-and-Control InfrastructureIn a joint operation, CrowdStrike, Google and Shadowserver Foundation disrupted infrastructure used by the Glassworm cybercrime group, cutting off attackers from victims. The group has wielded a remote access Trojan to repeatedly target developers of widely used open-source software.
Also: Indictments in Theft Case, KelpDAO Restarts OperationsThis week, banking Trojan TCLBanker targeted crypto platforms, three people indicted in a violent digital assets-related robbery, Kelp DAO restarted services after the $292 million hack and the U.S. Department of the Treasury tightened oversight of Binance.
Malware-as-a-Service Operations Favors Russian-Speaking CustomersAn emerging remote access Trojan targeting Android devices in Spanish-speaking nations is propagating fraudulent advertisements as an initial access point on Meta-owned applications.
Expect Fallout After Remote Access Trojan Added to Popular JavaScript NPM PackageA supply-chain attack backdoored versions of Axios, a popular JavaScript library that's present in many different software packages, to distribute a cross-platform, remote access Trojan. Identifying the full fallout from the attack could take some time, experts warned.
'Cyber Android RAT' Can Capture WhatsApp History, Crypto Seed PhrasesCybercriminals are advertising on criminal hacking online boards an Android remote access Trojan that can steal victims' WhatsApp conversation history, surveil them in real time and extract cryptocurrency seed phrases for the low price of about $500 a month.
New Trojan May Soon Be Offered for Sale to Criminal UndergroundSecurity researchers warn of "Massiv," an Android Trojan - disguised as an IPTV app - targeting users who sideload streaming apps. The malware enables screen capture, overlays and credential theft - and may soon be marketed on criminal underground forums as malware as a service.
Rhadamanthys, VenomRAT and Elysium Targeted in OperationA multinational law enforcement operation resulted in the arrest of a remote access Trojan operator and the seizure of over 1,000 info stealer and botnet servers. Authorities took down 1,025 servers associated with the Rhadamanthys infostealer, the Venom RAT and a botnet dubbed Elysium.
Trojan Poised for Use in Campaigns Across the GlobeAndroid malware advertised as "Herodotus" on cybercrime forums injects a randomized pause of up to three seconds whenever a hacker bypasses the keyboard on an infected device to enter account credentials. Systems that rely on indicators such as input timing may wave through the transaction.
Attacks Move From China to Malaysia Using Phishing PDFsSeemingly unrelated attacks targeting Chinese-speakers throughout the Asia-Pacific region with a remote access trojan trace back to the same threat actor, says researchers. Hackers' most likely motivation is regional intelligence collection.
Eset: Lazarus Group Shares Backdoor With Newer Pyongyang Threat ActorA gang of North Korean hackers behind fake IT job recruitment scams now have access to a remote access Trojan favored by their more technically advanced counterparts tracked collectively as the Lazarus Group, say security researchers.
Sophisticated Cyberespionage Campaign Targets Asian Telecom, Manufacturing SectorsA remote access Trojan that's a staple of Chinese nation-state hacking is part of an ongoing campaign targeting telecom and manufacturing sectors in Central and South Asian countries. The threat actor, tracked as Naikon, apparently has access to a new variant of PlugX malware.
Brazil-Targeting Malware Exploits Windows UIA to Evade DetectionA banking Trojan long confined to Brazil has become the first known malware to exploit Microsoft's UI Automation framework to extract credentials, signaling a new tactic that may evade conventional detection. Akamai's findings point to a growing trend of attackers using legitimate system features.
Also: Clorox Sues IT Vendor Over Password BlunderThis week, XSS forum admin arrested, Clorox sued Cognizant, Lumma Stealer is back, NY regulates water, U.S. maritime cybersecurity rules in effect, new Coyote banking Trojan, a hacker nabbed details of Mexico City auxiliary police, Latin America cyberattacks, and World Leaks stole synthetic data.
Also: Clorox Sues IT Vendor Over Password BlunderThis week, XSS forum admin arrested, Clorox sued Cognizant, Lumma Stealer is back, NY regulates water, U.S. maritime cybersecurity rules in effect, new Coyote banking Trojan, a hacker nabbed details of Mexico City auxiliary police, Latin America cyberattacks, and World Leaks stole synthetic data.
Also, US Sanctions North Korean IT Worker Scammers and More Paraguay HacksThis week, McDonald's password mishap, North Korean IT worker sanctions, a wormable Microsoft flaw, Qantas update. Monzo fined, Flutter data breach and CyberTeam again targeted Paraguay. Anatsa Trojan reappeared, DoNot targeted a European ministry. Academics sneaked prompt injections into papers.
Also, Spain Arrests Hacker Behind Leaks Targeting Politicians and JournalistsThis week, Chinese sites mimicked brands, Spain arrested data leak hackers, Swiss health nonprofit ransomware attack, ICC probed a cyberattack, UNFI restored systems, a flaw in smart tractors, RomCom RAT. A U.K. man sentenced for locking employer out of network. A WordPress hack installs a Trojan.
Trojanized NetExtender Installer Exfiltrates Data to Hardcoded IP AddressFake versions of SonicWall VPN software contain a credential-stealing Trojan, the California network security company warned Monday. Imposter versions of tools such as VPNs, virtual desktops and software development tools "are often laced with infostealers."
New Variant Uses Virtualization to Weaponize Legit Apps, Stealing Data in Real TimeA banking Trojan known for mimicking mobile app login pages has gone to the next level by copying and pasting real mobile banking apps into a virtual environment it creates on infected smartphones, warn researchers. New Godfather malware "marks a significant leap in mobile threat capabilities."
Malware Hides in Memory, Evades Detection by Endpoint ToolsA Chinese state-backed hacking group tracked as UNC5174 relaunched its operations after a year of silence with a campaign using a memory-only remote access Trojan that evades traditional detection mechanisms, according to new research from cybersecurity firm Sysdig.