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BTMOB Android malware service generates custom phishing payloads

Recorded: May 28, 2026, 10 p.m.

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BTMOB Android malware service generates custom phishing payloads

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HomeNewsSecurityBTMOB Android malware service generates custom phishing payloads

BTMOB Android malware service generates custom phishing payloads

By Bill Toulas

May 28, 2026
05:10 PM
0

An Android remote access trojan named BTMOB is offered to cybercriminals with a builder interface for generating malware payloads tailored to phishing lures.
The malware provides a wide set of features that includes stealing specific data, intercepting financial transactions, capturing screenshots, and remote control capabilities.
Cybersecurity company ESET says that BTMOB is openly advertised on the clearweb and operates as a malware-as-a-service (MaaS) platform. The APK builder included in the offer provides easy customization of the payload without any need to code.
Customers can select from a set of permissions the APK requests upon installation, and define what actions the app should take (e.g., disable Google Play, hide its icon to make it more difficult to remove from the device, or prevent sleep mode).

BTMOB's payload builderSource: ESET
It should be noted that BTMOB is mostly active in Brazil and Latin America. It is not a new Android trojan, as ANYRUN analyzed it in February 2025, and threat intelligence and digital risk protection company Cyble documented it as an advanced Android malware.
At the time, Cyble spotted about 15 samples of BTMOB 2.5 in nearly two weeks, indicating that the author was actively developing the malware.
According to ESET researchers, sales are conducted in private Telegram channels. Threat actors can get it with a monthly subscription of $700 monthly subscription, or they can pay $5,000 for a lifetime license.

BTMOB clearnet siteSource: ESET
BTMOB appears to be an evolution of the SpySolr malware family and is distributed via phishing websites masquerading as streaming services and cryptocurrency mining platforms.
ESET reports that potential victims are redirected to portals mimicking Google Play and prompted to download the fake apps. The
Researchers Johnk3r and Merl recently spotted BTMOB campaigns that used an Argentinian government agency as a lure.

Malicious apps on fake Google Play sitesSource: Merl
The malware platform also helps operators generate custom, localized phishing lures to match the campaign’s topic. Once installed, it abuses Android Accessibility Services to obtain elevated permissions and additional system access without further user interaction.
Although ESET is tracking the threat and updates static detection rules accordingly, the rapid generation of new payloads can undermine the effectiveness of single-layered defenses.
Android users are recommended to install only apps from the official Google Play Store on their phones, scan with Play Protect, and revoke risky and powerful permissions, such as Accessibility access, if not explicitly needed.

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Android
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Malware-as-a-Service
Mobile
Phishing

Bill Toulas
Bill Toulas is a tech writer and infosec news reporter with over a decade of experience working on various online publications, covering open-source, Linux, malware, data breach incidents, and hacks.

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An Android remote access trojan named BTMOB is offered to cybercriminals as a malware-as-a-service (MaaS) platform, providing a builder interface for generating custom phishing payloads. This malicious software incorporates numerous capabilities, including the theft of specific data, interception of financial transactions, screenshot capture, and remote control functionality. Cybersecurity company ESET reports that BTMOB is openly advertised on the clearweb, allowing users to customize the payload through an APK builder without requiring any coding. Users can select the specific permissions the resulting application requests upon installation, and define actions the application should execute, such as disabling Google Play, hiding its icon to impede removal, or preventing sleep mode.

The BTMOB platform appears to be an evolution of the SpySolr malware family and is distributed through phishing websites that impersonate streaming services and cryptocurrency mining platforms. Potential victims are directed to portals mimicking Google Play to download these fraudulent applications. Furthermore, the malware assists operators in creating custom, localized phishing lures tailored to specific campaign topics. Technically, BTMOB exploits Android Accessibility Services to acquire elevated permissions and access to additional system functions without requiring further user interaction.

Threat intelligence regarding BTMOB exists; ANYRUN analyzed the malware in February 2025, and the threat intelligence and digital risk protection company Cyble documented it as an advanced Android malware. Researchers Johnk3r and Merl have spotted BTMOB campaigns that utilized an Argentinian government agency as a lure. The malware is primarily active in Brazil and Latin America. Threat actors can acquire BTMOB through private Telegram channels, paying either a monthly subscription of $700 or a lifetime license of $5,000.

Despite the rapid development of new payloads, ESET researchers are tracking the threat and updating static detection rules. The proliferation of these custom payloads can severely undermine the effectiveness of single-layered security defenses. Consequently, Android users are advised to restrict their installations to apps sourced only from the official Google Play Store, utilize Play Protect for scanning, and revoke risky or powerful permissions, such as Accessibility access, unless explicitly necessary for the application's function.