Protected User Data: Calendar Entries, Sub-technique T1636.001 - Mobile

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On Android, this can be accomplished using the Calendar Content Provider. On iOS, this can be accomplished using the <code>EventKit</code> framework. </p><p>If the device has been jailbroken or rooted, an adversary may be able to access <a href="/techniques/T1636/001">Calendar Entries</a> without the user鈥檚 knowledge or approval. </p> </div> </div> <div class="col-md-4"> <div class="card"> <div class="card-body"> <div class="row card-data" id="card-id"> <div class="col-md-1 px-0 text-center"></div> <div class="col-md-11 pl-0"> <span class="h5 card-title">ID: </span>T1636.001 </div> </div>  <div class="row card-data"> <div class="col-md-1 px-0 text-center"></div> <div class="col-md-11 pl-0"> <span class="h5 card-title">Sub-technique of: </span> <a href="/techniques/T1636">T1636</a> </div> </div>  <div id="card-tactics" class="row card-data"> <div class="col-md-1 px-0 text-center"> <span data-toggle="tooltip" data-placement="left" title="" data-test-ignore="true" data-original-title="The tactic objectives that the (sub-)technique can be used to accomplish">ⓘ</span> </div> <div class="col-md-11 pl-0"> <span class="h5 card-title">Tactic:</span> <a href="/tactics/TA0035">Collection</a> </div> </div> <div class="row card-data"> <div class="col-md-1 px-0 text-center"> <span data-toggle="tooltip" data-placement="left" title="" data-test-ignore="true" data-original-title="The system an adversary is operating within; could be an operating system or application">ⓘ</span> </div> <div class="col-md-11 pl-0"> <span class="h5 card-title">Platforms: </span>Android, iOS </div> </div> <div class="row card-data"> <div class="col-md-1 px-0 text-center"> <span data-toggle="tooltip" data-placement="left" title="" data-test-ignore="true" data-original-title="NIST Mobile Threat Catalogue IDs associated with the technique">ⓘ</span> </div> <div class="col-md-11 pl-0"> <span class="h5 card-title">MTC ID:</span> <a href="https://pages.nist.gov/mobile-threat-catalogue/application-threats/APP-13.html" target="_blank">APP-13</a> </div> </div> <div class="row card-data"> <div class="col-md-1 px-0 text-center"></div> <div class="col-md-11 pl-0"> <span class="h5 card-title">Version: </span>1.1 </div> </div> <div class="row card-data"> <div class="col-md-1 px-0 text-center"></div> <div class="col-md-11 pl-0"> <span class="h5 card-title">Created: </span>01 April 2022 </div> </div> <div class="row card-data"> <div class="col-md-1 px-0 text-center"></div> <div class="col-md-11 pl-0"> <span class="h5 card-title">Last Modified: </span>16 March 2023 </div> </div> </div> </div> <div class="text-center pt-2 version-button live"> <div class="live"> <a data-toggle="tooltip" data-placement="bottom" title="Permalink to this version of T1636.001" href="/versions/v16/techniques/T1636/001/" data-test-ignore="true">Version Permalink</a> </div> <div class="permalink"> <a data-toggle="tooltip" data-placement="bottom" title="Go to the live version of T1636.001" href="/versions/v16/techniques/T1636/001/" data-test-ignore="true">Live Version</a> </div> </div> </div> </div> <h2 class="pt-3" id ="examples">Procedure Examples</h2> <div class="tables-mobile"> <table class="table table-bordered table-alternate mt-2"> <thead> <tr> <th scope="col">ID</th> <th scope="col">Name</th> <th scope="col">Description</th> </tr> </thead> <tbody> <tr> <td> <a href="/software/S0405"> S0405 </a> </td> <td> <a href="/software/S0405"> Exodus </a> </td> <td> <p><a href="/software/S0405">Exodus</a> Two can exfiltrate calendar events.<span onclick=scrollToRef('scite-1') id="scite-ref-1-a" class="scite-citeref-number" title="Security Without Borders. (2019, March 29). Exodus: New Android Spyware Made in Italy. Retrieved September 3, 2019."data-reference="SWB Exodus March 2019"><sup><a href="https://securitywithoutborders.org/blog/2019/03/29/exodus.html" target="_blank" data-hasqtip="0" aria-describedby="qtip-0">[1]</a></sup></span> </p> </td> </tr> <tr> <td> <a href="/software/S0408"> S0408 </a> </td> <td> <a href="/software/S0408"> FlexiSpy </a> </td> <td> <p><a href="/software/S0408">FlexiSpy</a> can collect the device calendars.<span onclick=scrollToRef('scite-2') id="scite-ref-2-a" class="scite-citeref-number" title="Actis B. (2017, April 22). FlexSpy Application Analysis. Retrieved September 4, 2019."data-reference="CyberMerchants-FlexiSpy"><sup><a href="http://www.cybermerchantsofdeath.com/blog/2017/04/22/FlexiSpy.html" target="_blank" data-hasqtip="1" aria-describedby="qtip-1">[2]</a></sup></span></p> </td> </tr> <tr> <td> <a href="/software/S0407"> S0407 </a> </td> <td> <a href="/software/S0407"> Monokle </a> </td> <td> <p><a href="/software/S0407">Monokle</a> can retrieve calendar event information including the event name, when and where it is taking place, and the description.<span onclick=scrollToRef('scite-3') id="scite-ref-3-a" class="scite-citeref-number" title="Bauer A., Kumar A., Hebeisen C., et al. (2019, July). Monokle: The Mobile Surveillance Tooling of the Special Technology Center. Retrieved September 4, 2019."data-reference="Lookout-Monokle"><sup><a href="https://www.lookout.com/documents/threat-reports/lookout-discovers-monokle-threat-report.pdf" target="_blank" data-hasqtip="2" aria-describedby="qtip-2">[3]</a></sup></span> </p> </td> </tr> <tr> <td> <a href="/software/S0316"> S0316 </a> </td> <td> <a href="/software/S0316"> Pegasus for Android </a> </td> <td> <p><a href="/software/S0316">Pegasus for Android</a> accesses calendar entries.<span onclick=scrollToRef('scite-4') id="scite-ref-4-a" class="scite-citeref-number" title="Mike Murray. (2017, April 3). Pegasus for Android: the other side of the story emerges. Retrieved April 16, 2017."data-reference="Lookout-PegasusAndroid"><sup><a href="https://blog.lookout.com/blog/2017/04/03/pegasus-android/" target="_blank" data-hasqtip="3" aria-describedby="qtip-3">[4]</a></sup></span></p> </td> </tr> <tr> <td> <a href="/software/S0328"> S0328 </a> </td> <td> <a href="/software/S0328"> Stealth Mango </a> </td> <td> <p><a href="/software/S0328">Stealth Mango</a> uploads calendar events and reminders.<span onclick=scrollToRef('scite-5') id="scite-ref-5-a" class="scite-citeref-number" title="Lookout. (n.d.). Stealth Mango & Tangelo. Retrieved September 27, 2018."data-reference="Lookout-StealthMango"><sup><a href="https://info.lookout.com/rs/051-ESQ-475/images/lookout-stealth-mango-srr-us.pdf" target="_blank" data-hasqtip="4" aria-describedby="qtip-4">[5]</a></sup></span></p> </td> </tr> <tr> <td> <a href="/software/S1082"> S1082 </a> </td> <td> <a href="/software/S1082"> Sunbird </a> </td> <td> <p><a href="/software/S1082">Sunbird</a> can exfiltrate calendar information.<span onclick=scrollToRef('scite-6') id="scite-ref-6-a" class="scite-citeref-number" title="Apurva Kumar, Kristin Del Rosso. (2021, February 10). Novel Confucius APT Android Spyware Linked to India-Pakistan Conflict. Retrieved June 9, 2023."data-reference="lookout_hornbill_sunbird_0221"><sup><a href="https://www.lookout.com/blog/lookout-discovers-novel-confucius-apt-android-spyware-linked-to-india-pakistan-conflict" target="_blank" data-hasqtip="5" aria-describedby="qtip-5">[6]</a></sup></span></p> </td> </tr> </tbody> </table> </div> <h2 class="pt-3" id ="mitigations">Mitigations</h2> <div class="tables-mobile"> <table class="table table-bordered table-alternate mt-2"> <thead> <tr> <th scope="col">ID</th> <th scope="col">Mitigation</th> <th scope="col">Description</th> </tr> </thead> <tbody> <tr> <td> <a href="/mitigations/M1011"> M1011 </a> </td> <td> <a href="/mitigations/M1011"> User Guidance </a> </td> <td> <p>Calendar access is an uncommonly needed permission, so users should be instructed to use extra scrutiny when granting access to their device calendar. </p> </td> </tr> </tbody> </table> </div> <h2 class="pt-3" id="detection">Detection</h2> <div class="tables-mobile"> <table class="table datasources-table table-bordered"> <thead> <tr> <th class="p-2" scope="col">ID</th> <th class="p-2 nowrap" scope="col">Data Source</th> <th class="p-2 nowrap" scope="col">Data Component</th> <th class="p-2" scope="col">Detects</th> </tr> </thead> <tbody> <tr class="datasource" id="uses-DS0041"> <td> <a href="/datasources/DS0041">DS0041</a> </td> <td class="nowrap"> <a href="/datasources/DS0041">Application Vetting</a> </td>  <td> <a href="/datasources/DS0041/#Permissions%20Requests">Permissions Requests</a> </td> <td> <p>Application vetting services could look for <code>android.permission.READ_CALENDAR</code> or <code>android.permission.WRITE_CALENDAR</code> in an Android application鈥檚 manifest, or <code>NSCalendarsUsageDescription</code> in an iOS application鈥檚 <code>Info.plist</code> file. Most applications do not need calendar access, so extra scrutiny could be applied to those that request it. </p> </td> </tr> <tr class="datasource" id="uses-DS0042"> <td> <a href="/datasources/DS0042">DS0042</a> </td> <td class="nowrap"> <a href="/datasources/DS0042">User Interface</a> </td>  <td> <a href="/datasources/DS0042/#System%20Settings">System Settings</a> </td> <td> <p>On both Android and iOS, the user can manage which applications have permission to access calendar information through the device settings screen, revoke the permission if necessary. </p> </td> </tr> </tbody> </table> </div> <h2 class="pt-3" id="references">References</h2> <div class="row"> <div class="col"> <ol> <li> <span id="scite-1" class="scite-citation"> <span class="scite-citation-text"> <a rel="nofollow" class="external text" name="scite-1" href="https://securitywithoutborders.org/blog/2019/03/29/exodus.html" target="_blank"> Security Without Borders. (2019, March 29). Exodus: New Android Spyware Made in Italy. Retrieved September 3, 2019. </a> </span> </span> </li> <li> <span id="scite-2" class="scite-citation"> <span class="scite-citation-text"> <a rel="nofollow" class="external text" name="scite-2" href="http://www.cybermerchantsofdeath.com/blog/2017/04/22/FlexiSpy.html" target="_blank"> Actis B. (2017, April 22). FlexSpy Application Analysis. Retrieved September 4, 2019. </a> </span> </span> </li> <li> <span id="scite-3" class="scite-citation"> <span class="scite-citation-text"> <a rel="nofollow" class="external text" name="scite-3" href="https://www.lookout.com/documents/threat-reports/lookout-discovers-monokle-threat-report.pdf" target="_blank"> Bauer A., Kumar A., Hebeisen C., et al. (2019, July). Monokle: The Mobile Surveillance Tooling of the Special Technology Center. Retrieved September 4, 2019. </a> </span> </span> </li> </ol> </div> <div class="col"> <ol start="4.0"> <li> <span id="scite-4" class="scite-citation"> <span class="scite-citation-text"> <a rel="nofollow" class="external text" name="scite-4" href="https://blog.lookout.com/blog/2017/04/03/pegasus-android/" target="_blank"> Mike Murray. (2017, April 3). Pegasus for Android: the other side of the story emerges. Retrieved April 16, 2017. </a> </span> </span> </li> <li> <span id="scite-5" class="scite-citation"> <span class="scite-citation-text"> <a rel="nofollow" class="external text" name="scite-5" href="https://info.lookout.com/rs/051-ESQ-475/images/lookout-stealth-mango-srr-us.pdf" target="_blank"> Lookout. (n.d.). Stealth Mango & Tangelo. Retrieved September 27, 2018. </a> </span> </span> </li> <li> <span id="scite-6" class="scite-citation"> <span class="scite-citation-text"> <a rel="nofollow" class="external text" name="scite-6" href="https://www.lookout.com/blog/lookout-discovers-novel-confucius-apt-android-spyware-linked-to-india-pakistan-conflict" target="_blank"> Apurva Kumar, Kristin Del Rosso. (2021, February 10). Novel Confucius APT Android Spyware Linked to India-Pakistan Conflict. Retrieved June 9, 2023. </a> </span> </span> </li> </ol> </div> </div> </div> </div> </div> </div> </div> </div>   <div class="overlay search" id="search-overlay" style="display: none;"> <div class="overlay-inner">  <div class="search-header"> <div class="search-input"> <input type="text" id="search-input" placeholder="search"> </div> <div class="search-icons"> <div class="search-parsing-icon spinner-border" style="display: none" id="search-parsing-icon"></div> <div class="close-search-icon" id="close-search-icon">×</div> </div> </div>  <div id="search-body" class="search-body"> <div class="results" id="search-results">  </div> <div id="load-more-results" class="load-more-results"> <button class="btn btn-default" id="load-more-results-button">load more results</button> </div> </div> </div> </div> </div> <div class="row flex-grow-0 flex-shrink-1">  <footer class="col footer"> <div class="container-fluid"> <div class="row row-footer"> <div class="col-2 col-sm-2 col-md-2"> <div class="footer-center-responsive my-auto"> <a href="https://www.mitre.org" target="_blank" rel="noopener" aria-label="MITRE"> <img src="/theme/images/mitrelogowhiteontrans.gif" class="mitre-logo-wtrans"> </a> </div> </div> <div class="col-2 col-sm-2 footer-responsive-break"></div> <div class="footer-link-group"> <div class="row row-footer"> <div class="px-3 col-footer"> <u class="footer-link"><a href="/resources/engage-with-attack/contact" class="footer-link">Contact Us</a></u> </div> <div class="px-3 col-footer"> <u class="footer-link"><a href="/resources/legal-and-branding/terms-of-use" class="footer-link">Terms of Use</a></u> </div> <div class="px-3 col-footer"> <u class="footer-link"><a href="/resources/legal-and-branding/privacy" class="footer-link">Privacy Policy</a></u> </div> <div class="px-3"> <u class="footer-link"><a href="/resources/changelog.html" class="footer-link" data-toggle="tooltip" data-placement="top" data-html="true" title="ATT&CK content v16.1Website v4.2.1">Website Changelog</a></u> </div> </div> <div class="row"> <small class="px-3"> © 2015 - 2024, The MITRE Corporation. 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