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Home Information Security

Hackers Sign Android Malware Apps with Compromised Platform Certificates

admin by admin
December 2, 2022
in Information Security


Platform certificates used by Android smartphone vendors like Samsung, LG, and MediaTek have been found to be abused to sign malicious apps.

The findings were first discovered and reported by Google reverse engineer Łukasz Siewierski on Thursday.

“A platform certificate is the application signing certificate used to sign the ‘android’ application on the system image,” a report filed through the Android Partner Vulnerability Initiative (AVPI) reads.

“The ‘android’ application runs with a highly privileged user id – android.uid.system – and holds system permissions, including permissions to access user data.”

CyberSecurity

This effectively means that a rogue application signed with the same certificate can gain the highest level of privileges as the Android operating system, permitting it to harvest all kinds of sensitive information from a compromised device.

The list of malicious Android app packages that have abused the certificates is below –

  • com.russian.signato.renewis
  • com.sledsdffsjkh.Search
  • com.android.power
  • com.management.propaganda
  • com.sec.android.musicplayer
  • com.houla.quicken
  • com.attd.da
  • com.arlo.fappx
  • com.metasploit.stage
  • com.vantage.ectronic.cornmuni
Android Malware Apps

That said, it’s not immediately clear how and where these artifacts were found, and if they were used as part of any active malware campaign.

A search on VirusTotal shows that the identified samples have been flagged by antivirus solutions as HiddenAds adware, Metasploit, information stealers, downloaders, and other obfuscated malware.

When reached for comment, Google said it informed all impacted vendors to rotate the certificates and that there’s no evidence these apps were delivered through the Play Store.

“OEM partners promptly implemented mitigation measures as soon as we reported the key compromise,” the company told The Hacker News in a statement. “End users will be protected by user mitigations implemented by OEM partners.”

“Google has implemented broad detections for the malware in Build Test Suite, which scans system images. Google Play Protect also detects the malware. There is no indication that this malware is or was on the Google Play Store. As always, we advise users to ensure they are running the latest version of Android.”

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Tags: computer securitycyber attackscyber newscyber security newscyber security news todaycyber security updatescyber updatesdata breachhacker newshacking newshow to hackinformation securitynetwork securityransomware malwaresoftware vulnerabilitythe hacker news
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