Trojan.Encoder.10908

Technical Information

To ensure autorun and distribution

Modifies the following registry keys

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '{C18B673D-1A04-6330-7BF1-0A6AF057EC4C}' = '%ALLUSERSPROFILE%\{5D9B4F0D-3234-FF20-7BF1-0A6AF057EC4C}\f0249f92.exe'

Creates or modifies the following files

<SYSTEM32>\tasks\{c18b673d-1a04-6330-7bf1-0a6af057ec4c}

Creates the following files on removable media

<Drive name for removable media>:\{1ae78717-a934-f82e-bb75-5330e2af5ce8}\8ad0c29c-3f20-9a18-0766-fe9e8c1ac147.exe
<Drive name for removable media>:\iso27k_isms_implementation_and_certification_process_overview_v2.pptx.lnk
<Drive name for removable media>:\middaugh_keynote.pptx.lnk
<Drive name for removable media>:\metac.ppt.lnk
<Drive name for removable media>:\sim_gametheory_to_finance.ppt.lnk
<Drive name for removable media>:\accountsreceivable.ppt.lnk
<Drive name for removable media>:\ksearch_esa_talk.ppt.lnk
<Drive name for removable media>:\mappingconcepthubberlin.ppt.lnk
<Drive name for removable media>:\sacs_presentation_sacs_qep_improving_rt_education_final.ppt.lnk
<Drive name for removable media>:\arrow-down.png.lnk
<Drive name for removable media>:\cleanlyrics.png.lnk
<Drive name for removable media>:\cbz.png.lnk
<Drive name for removable media>:\calibre.png.lnk
<Drive name for removable media>:\stoc13_ml_quoc_le.pptx.lnk
<Drive name for removable media>:\asm.png.lnk
<Drive name for removable media>:\dissolveanother.png.lnk
<Drive name for removable media>:\block.png.lnk
<Drive name for removable media>:\irgeek.pem.lnk
<Drive name for removable media>:\investmentbankca_ca8.pem.lnk
<Drive name for removable media>:\tunpersonalca1.pem.lnk
<Drive name for removable media>:\fil_20060629111052.pdf.lnk
<Drive name for removable media>:\lom602.pdf.lnk
<Drive name for removable media>:\ff_ot_user_guide.pdf.lnk
<Drive name for removable media>:\10thingscondoms.pdf.lnk
<Drive name for removable media>:\breakpoint.png.lnk
<Drive name for removable media>:\210252809.jpeg.lnk
<Drive name for removable media>:\samieee_obiee_presentation.pptx.lnk
<Drive name for removable media>:\calculatorworksheet.zip.lnk
<Drive name for removable media>:\price.zip.lnk
<Drive name for removable media>:\price030215.zip.lnk
<Drive name for removable media>:\productos.zip.lnk
<Drive name for removable media>:\fiche_inscription_2015.zip.lnk
<Drive name for removable media>:\national_autism_preparation_programs.xlsx.lnk
<Drive name for removable media>:\2013_smccc_competition_points_jul2013.xlsx.lnk
<Drive name for removable media>:\al.xlsx.lnk
<Drive name for removable media>:\disclosuredetails.xlsx.lnk
<Drive name for removable media>:\productos.xls.lnk
<Drive name for removable media>:\contractualdeadlines.xls.lnk
<Drive name for removable media>:\7790_preview.pdf.lnk
<Drive name for removable media>:\indogerman2010.pptx.lnk
<Drive name for removable media>:\price030215.xls.lnk
<Drive name for removable media>:\testwmv.wmv.lnk
<Drive name for removable media>:\babyboymaintoscenesbackground.wmv.lnk
<Drive name for removable media>:\babyboymaintoscenesbackground_pal.wmv.lnk
<Drive name for removable media>:\phytoremediation.rtf.lnk
<Drive name for removable media>:\static_electricity_easy_and_quick_activities.rtf.lnk
<Drive name for removable media>:\pubnet_855.rtf.lnk
<Drive name for removable media>:\krsweden.rtf.lnk
<Drive name for removable media>:\waterlandhealthkano.rtf.lnk
<Drive name for removable media>:\military_callsigns_0311.rtf.lnk
<Drive name for removable media>:\schema.rdf.lnk
<Drive name for removable media>:\1sm_price.xls.lnk
<Drive name for removable media>:\sioc.rdf.lnk
<Drive name for removable media>:\51.mp4.lnk
<Drive name for removable media>:\d0068197bb5a41fea16a220c45390606.mp4.lnk
<Drive name for removable media>:\clip_480_5sec_6mbps_h264.mp4.lnk
<Drive name for removable media>:\508softwareandos.doc.lnk
<Drive name for removable media>:\tcm851ax32.exe.lnk
<Drive name for removable media>:\calc.exe.lnk
<Drive name for removable media>:\skypesetup.exe.lnk
<Drive name for removable media>:\aoc_saq_d_v3_merchant.docx.lnk
<Drive name for removable media>:\glidescope_review_rev_010.docx.lnk
<Drive name for removable media>:\holycrosschurchinstructions.docx.lnk
<Drive name for removable media>:\file_p_00000000_1371597592.docx.lnk
<Drive name for removable media>:\applicantform_en.doc.lnk
<Drive name for removable media>:\february_catalogue__2015.doc.lnk
<Drive name for removable media>:\weeklysheet1215.doc.lnk
<Drive name for removable media>:\removedtitles_records.zip.lnk
<Drive name for removable media>:\notepad.exe.lnk
<Drive name for removable media>:\pmd.cer.lnk
<Drive name for removable media>:\sdksampleprivdeveloper.cer.lnk
<Drive name for removable media>:\testcertificate.cer.lnk
<Drive name for removable media>:\contoso.cer.lnk
<Drive name for removable media>:\dashborder_120.bmp.lnk
<Drive name for removable media>:\dashborder_144.bmp.lnk
<Drive name for removable media>:\dashborder_96.bmp.lnk
<Drive name for removable media>:\dialmap.bmp.lnk
<Drive name for removable media>:\000814251_video_01.avi.lnk
<Drive name for removable media>:\join.avi.lnk
<Drive name for removable media>:\delete.avi.lnk
<Drive name for removable media>:\ovp25012015.doc.lnk
<Drive name for removable media>:\removedtitles_records.xls.lnk
<Drive name for removable media>:\dotnetfx45_full_setup.exe.lnk
<Drive name for removable media>:\iisstart.htm.lnk
<Drive name for removable media>:\winmine.exe.lnk
<Drive name for removable media>:\video_1.mp4.lnk
<Drive name for removable media>:\firefly1.mov.lnk
<Drive name for removable media>:\dag2_panel1_320_ref.mov.lnk
<Drive name for removable media>:\parnas_01.jpg.lnk
<Drive name for removable media>:\168.jpg.lnk
<Drive name for removable media>:\210252809.jpg.lnk
<Drive name for removable media>:\13.jpg.lnk
<Drive name for removable media>:\2.jpg.lnk
<Drive name for removable media>:\1189.jpg.lnk
<Drive name for removable media>:\4f0bf7ff71f28.jpg.lnk
<Drive name for removable media>:\jre-7u75-windows-i586-iftw.exe.lnk
<Drive name for removable media>:\region-north-karelia.jpeg.lnk
<Drive name for removable media>:\wrar520.exe.lnk
<Drive name for removable media>:\2.jpeg.lnk
<Drive name for removable media>:\3.jpeg.lnk
<Drive name for removable media>:\api-hashmap.html.lnk
<Drive name for removable media>:\ituneshelpunavailable.html.lnk
<Drive name for removable media>:\adadsi.html.lnk
<Drive name for removable media>:\iisstart.html.lnk
<Drive name for removable media>:\browse.htm.lnk
<Drive name for removable media>:\advice_process.htm.lnk
<Drive name for removable media>:\garden.htm.lnk
<Drive name for removable media>:\64bit_notes.htm.lnk
<Drive name for removable media>:\168.jpeg.lnk
<Drive name for removable media>:\1sm_price.zip.lnk

Malicious functions

Injects code into

the following system processes:

%WINDIR%\syswow64\svchost.exe

the following user processes:

iexplore.exe

Modifies file system

Creates the following files

%ALLUSERSPROFILE%\{5d9b4f0d-3234-ff20-7bf1-0a6af057ec4c}\f0249f92.exe

Deletes the following files

<Drive name for removable media>:\{1ae78717-a934-f82e-bb75-5330e2af5ce8}\8ad0c29c-3f20-9a18-0766-fe9e8c1ac147.exe

Substitutes the following files

<Drive name for removable media>:\{1ae78717-a934-f82e-bb75-5330e2af5ce8}\8ad0c29c-3f20-9a18-0766-fe9e8c1ac147.exe

Deletes itself.

Miscellaneous

Creates and executes the following

'<Full path to file>' ' (with hidden window)
'%WINDIR%\syswow64\svchost.exe' ' (with hidden window)

Executes the following

'%WINDIR%\syswow64\svchost.exe'

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