Cybersecurity researchers are calling consideration to a brand new shift within the Android malware panorama the place dropper apps, that are sometimes used to ship banking trojans, to additionally distribute less complicated malware akin to SMS stealers and fundamental adware.
These campaigns are propagated through dropper apps masquerading as authorities or banking apps in India and different components of Asia, ThreatFabric mentioned in a report final week.
The Dutch cell safety agency mentioned the change is pushed by current safety protections that Google has piloted in choose markets like Singapore, Thailand, Brazil, and India to dam sideloading of probably suspicious apps requesting harmful permissions like SMS messages and accessibility companies, a closely abused setting to hold out malicious actions on Android gadgets.
“Google Play Defend’s defences, notably the focused Pilot Program, are more and more efficient at stopping dangerous apps earlier than they run,” the corporate mentioned. “Second, actors need to future-proof their operations.”
“By encapsulating even fundamental payloads inside a dropper, they achieve a protecting shell that may evade at present’s checks whereas staying versatile sufficient to swap payloads and pivot campaigns tomorrow.”
ThreatFabric mentioned that whereas Google’s technique ups the ante by blocking a malicious app from being put in even earlier than a consumer can work together with it, attackers are attempting out new methods to get across the safeguards — a sign of the countless recreation of whack-a-mole on the subject of safety.
This consists of designing droppers, protecting in thoughts Google’s Pilot Program, in order that they do not search high-risk permissions and serve solely a innocent “replace” display that may fly previous scanning within the areas.
But it surely’s solely when the consumer clicks the “Replace” button that the precise payload will get fetched from an exterior server or unpacked, which then proceeds to hunt the mandatory permissions to fulfil its goals.
“Play Defend might show alerts in regards to the dangers, as part of a unique scan, however so long as the consumer accepts them, the app is put in, and the payload is delivered,” ThreatFabric mentioned. “This illustrates a important hole: Play Defend nonetheless permits dangerous apps by way of if the consumer clicks Set up anyway, and the malware nonetheless slips by way of the Pilot Program.”
One such dropper is RewardDropMiner, which has been discovered to serve together with adware payloads a Monero cryptocurrency miner that may be activated remotely. Current variants of the device, nonetheless, now not embrace the miner performance.
A few of the malicious apps delivered through RewardDropMiner, all focusing on customers in India, are listed beneath –
- PM YOJANA 2025 (com.fluvdp.hrzmkgi)
- °RTO Challan (com.epr.fnroyex)
- SBI On-line (com.qmwownic.eqmff)
- Axis Card (com.tolqppj.yqmrlytfzrxa)
Different dropper variants that keep away from triggering Play Defend or the Pilot Program embrace SecuriDropper, Zombinder, BrokewellDropper, HiddenCatDropper, and TiramisuDropper.
When reached for remark, Google informed The Hacker Information it has not discovered any apps utilizing these methods distributed through the Play Retailer and that it is continuously including new protections.
“No matter the place an app comes from – even when it is put in by a ‘dropper’ app – Google Play Defend helps to maintain customers secure by routinely checking it for threats,” a spokesperson mentioned.
“Safety towards these recognized malware variations was already in place by way of Google Play Defend previous to this report. Based mostly on our present detection, no apps containing these variations of this malware have been discovered on Google Play. We’re continuously enhancing our protections to assist maintain customers secure from dangerous actors.”
The event comes as Bitdefender Labs has warned of a brand new marketing campaign that is utilizing malicious adverts on Fb to hawk a free premium model of the TradingView app for Android to in the end deploy an improved model of the Brokewell banking trojan to watch, management, and steal delicate info from the sufferer’s system.
A minimum of 75 malicious adverts have been run since July 22, 2025, reaching tens of hundreds of customers within the European Union alone. The Android assault wave is only one half of a bigger malvertising operation that has abused Fb Advertisements to additionally goal Home windows desktops underneath the guise of assorted monetary and cryptocurrency apps.
“This marketing campaign reveals how cybercriminals are fine-tuning their ways to maintain up with consumer conduct,” the Romanian cybersecurity firm mentioned. “By focusing on cell customers and disguising malware as trusted buying and selling instruments, attackers hope to money in on the rising reliance on crypto apps and monetary platforms.”
