Stealer Spoofs Google, Microsoft & Apple, Then Backdoors macOS

Stealer Spoofs Google, Microsoft & Apple, Then Backdoors macOS

Newsletter Sign-UpNewsletter Sign-UpCybersecurity TopicsRelated TopicsApplication SecurityCybersecurity CareersCloud SecurityCyber RiskCyberattacks & Data BreachesCybersecurity AnalyticsCybersecurity OperationsData PrivacyEndpoint SecurityICS/OT SecurityIdentity & Access Mgmt SecurityInsider ThreatsIoTMobile SecurityPerimeterPhysical SecurityRemote WorkforceThreat IntelligenceVulnerabilities & ThreatsRecent in Cybersecurity TopicsEndpoint SecurityChina's Webworm Uses Discord, Microsoft Graphs to Hack EU GovernmentsChina's Webworm Uses Discord, Microsoft Graphs to Hack EU GovernmentsbyAlexander CulafiMay 22, 20264 Min ReadApplication SecurityGitHub Confirms Breach, 4K Internal Repos StolenGitHub Confirms Breach, 4K Internal Repos StolenbyAlexander CulafiMay 20, 20263 Min ReadWorld Related TopicsDR GlobalMiddle East & AfricaAsia PacificLatin AmericaSee AllThe EdgeDR TechnologyEventsRelated TopicsUpcoming EventsPodcastsWebinarsSEE ALLResourcesRelated TopicsResource LibraryNewslettersPodcastsReportsVideosWebinarsWhite Papers Partner PerspectivesDark Reading Resource LibraryThreat IntelligenceEndpoint SecurityRemote WorkforceVulnerabilities & ThreatsNewsStealer Spoofs Google, Microsoft & Apple, Then Backdoors macOSThe SHub Reaper stealer, which hides behind fake WeChat and Miro installers, marks a shift from ClickFix social engineering to Apple script-based execution.Elizabeth Montalbano,Contributing WriterMay 19, 20264 Min ReadSource: Africa Studio via Alamy Stock PhotoA newly identified macOS infostealer combines capabilities of both stealer and backdoor malware while using a multistage social engineering campaign that impersonates Apple, Google, and Microsoft simultaneously. The stealer, SHub Reaper, is a variant of the broader Shub malware, and demonstrates a new paradigm in macOS malware behavior.SHub Reaper uses fake WeChat and Miro installers as social engineering lures to get users to download it, according to SentinelOne, which revealed details about the variant in a report Monday. Indeed, hiding behind fake application downloads is a popular way that attackers hide infostealing malware."The malware infection starts with malicious Web pages offering Miro and WeChat installers, and they aggressively look for browsers with extensions relating to crypto wallets and popular password managers," Phil Stokes, macOS and AI research engineer at SentinelOne, tells Dark Reading via email.Related:Chinese APTs Share Linux Backdoor in Central Asia Telco AttacksHowever, what makes SHub Reaper's impersonation unique is how the infection chain shifts its disguise at each stage of the attack, he says. The payload may be hosted on a typosquatted Microsoft domain, executed under the guise of an Apple security update, and persist from a fake Google Software Update directory, a "multibrand spoofing across a single chain" that "is unusual," Stokes tells Dark Reading.SHub Reaper: A Two-for-One MalwareSHub Reaper also flips traditional stealer behavior on its head by combining typical stealer features such as credential theft, wallet hijacking, and document exfiltration, with persistent backdoor access — aspects that usually are not found in stealer malware, Stokes noted. The malware does this by installing a fake Google Update framework under the user Library paths, and then registers a LaunchAgent using Google Keystone-style naming conventions. The beacon checks in every 60 seconds and supports arbitrary command execution, effectively turning an infostealer infection into a lightweight macOS backdoor, he observed."The backdoor adds yet another vector for theft and compromise," Stokes tells Dark Reading. "Earlier families of infostealers were notably smash-and-grab, and didn't even bother with persistence." SHub Reaper, on the other hand, "is a multifunctional malware that blends tradecraft from a number of recent families," he explains.A Paradigm-Changing Cyber Execution ChainThe malware also represents a behavior shift in how macOS stealers typically execute on a victim's machine, according to SentinelOne. Instead of relying on standard "ClickFix" social engineering, in which victims are tricked into pasting a command into Terminal, "the variant uses a delivery mechanism that bypasses Terminal entirely and sidesteps Apple's Tahoe 26.4 mitigation for those attack flows," Stokes wrote.Related:Verizon DBIR: Enterprises Face a Dangerous Vulnerability GlutHe's referring to Apple's recently introduced protections in its Tahoe 26.4 OS, aimed at reducing Terminal-driven social-engineering attacks such as ClickFix. However, SHub Reaper sidesteps those mitigations by moving execution into trusted Apple-native scripting workflows, using the applescript:// URL scheme to open macOS Script Editor with a malicious AppleScript already loaded.This shift away from standard social engineering tactics that require victims to manually paste commands into the Terminal marks "a noteworthy evolution in macOS infostealers," Jason Soroko, senior fellow at certificate life cycle management firm Sectigo, tells Dark Reading via email. "Attackers are instead exploiting the applescript:// URL scheme to automatically load the macOS Script Editor with malicious payloads, effectively circumventing" these new macOS mitigations, he says.The reason for this shift is that attackers can now "confine execution to running system processes or user-initiated processes like Script Editor or the Terminal," Stokes explained in the post. "This allows the attacker to execute without introducing foreign binaries to the file system, and makes it easier to bypass file scanning detection tools like Apple’s own XProtect and similar third-party tools."Related:Tables Turn on 'The Gentlemen' RaaS Gang With Data LeakNew Cyberattack Behaviors Call for New DefenseInfostealers are one of the quickest ways that attackers can compromise enterprise credentials, which can then be used to conduct further malicious activity. In fact, research from WhiteIntel revealed in March that it takes attackers only 48 hours to move stolen credentials from an infected laptop to an underground marketplace, which may be why their use by attackers is steadily rising, according to 2025 M-Trends report by Google's Mandiant.For macOS users, identifying the social engineering tactics SHub Reaper uses is the easiest way to prevent infection, according to SentinelOne. In particular, users should take note of the way the infection chain layers familiar brands and trusted software cues across multiple stages, Stokes noted in the report.For enterprise defenders, SHub Reaper's move from ClickFix to using Applescript and other living off the land (LotL) techniques for execution creates a new detection surface, rendering typical terminal-centric detections for these infections basically ineffective. Instead, SentinelOne recommends that security teams monitor for the following in their environments to detect SHub Reaper infections: unexpected invocation of Script Editor (Script Editor.app); osascript spawning curl or shell interpreters; browser-to-AppleScript execution chains; and user-driven AppleScript execution originating from unusual URL handlers.About the AuthorElizabeth MontalbanoContributing WriterElizabeth Montalbano is freelance writer, editor, and  journalist with 30 years of professional experience and a master's degree from Arizona State University. Her areas of expertise include enterprise technology, cybersecurity, business, and culture. During her long career, Elizabeth has lived and worked as a full-time journalist in Phoenix, San Francisco, and New York City. She specializes in news coverage and analysis, using her years of experience to look at the current state of cybersecurity with a critical gaze. She currently resides in a village on the southwest coast of Portugal, where in her free time she enjoys surfing, hiking with her dogs, growing plants, and playing and performing as a singer and musician.See more from Elizabeth MontalbanoWant more Dark Reading stories in your Google search results?Add Us NowMore InsightsIndustry ReportsHow Organizations Are Managing Incident ResponseHow Enterprises Are Developing Secure ApplicationsInside RSAC 2026: security leaders reveal the risks redefining your defense strategyHow Enterprises Are Harnessing Emerging Technologies in CybersecurityDitch the Data Center: Understanding Flexible Cloud Infrastructure Security ManagementAccess More ResearchWebinarsBuild vs. Buy: The Hidden Cost of Building Your Own AI Security StackDefending in the Shadow Era: When the CVE Feed Goes DarkBuilding SecOps That Make the Most of Every DollarAI-Powered Credential Security: Intelligence Without ExposureAI-Powered Cybersecurity for Resource-Constrained OrganizationsMore WebinarsEditor's ChoiceThreat IntelligenceFrom Stuxnet to ChatGPT: 20 News Events That Shaped CyberFrom Stuxnet to ChatGPT: 20 News Events That Shaped CyberbyDark Reading Editorial TeamMay 6, 202631 Min ReadCyber RiskPhysical Cargo Theft Gets a Boost From CybercriminalsPhysical Cargo Theft Gets a Boost From CybercriminalsbyRobert LemosMay 4, 20265 Min ReadWant more Dark Reading stories in your Google search results?Keep up with the latest cybersecurity threats, newly discovered vulnerabilities, data breach information, and emerging trends. 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