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Microsoft Security Intelligence
Published Jul 19, 2010 | Updated Sep 15, 2017

Trojan:SymbOS/Flocker.A

Detected by Microsoft Defender Antivirus

Aliases: Symbian.PythonSms.1 (Dr.Web) Trojan-SMS.Python.Flocker.i (Kaspersky) SymbOS/Flocker.B (Panda) Troj/SymbSms-A (Sophos) TROJ_FLOCK.I (Trend Micro) ZvirOK (other)

Summary

Trojan:SymbOS/Flocker.A is a trojan that targets mobile devices running Symbian operating system (SymbOS). The trojan is spread as a SymbOS installation package. Once installed on a mobile device the trojan sends unauthorized SMS messages resulting in mobile device account charges.
Manually remove the following components installed by this malware:
 
\System\Apps\ZverOK\ZverOK.app
\System\Apps\ZverOK\default.py
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