Trojan.Encoder.11306

Technical Information

To ensure autorun and distribution

Modifies the following registry keys

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '{B3598D4E-4E27-4FC5-5E98-7CBA6CB137DA}' = '%ALLUSERSPROFILE%\{2F49A57E-6617-D3D5-5E98-7CBA6CB137DA}\82f675e1.exe'

Creates or modifies the following files

<SYSTEM32>\tasks\{b3598d4e-4e27-4fc5-5e98-7cba6cb137da}

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>:\contenttypes.rdf.lnk
<Drive name for removable media>:\schema.rdf.lnk
<Drive name for removable media>:\20140114.rdf.lnk
<Drive name for removable media>:\taxus_baccata.rdf.lnk
<Drive name for removable media>:\foaf.rdf.lnk
<Drive name for removable media>:\asaprojectcompetition.pptx.lnk
<Drive name for removable media>:\gruenspecht_02172016.pptx.lnk
<Drive name for removable media>:\middaugh_keynote.pptx.lnk
<Drive name for removable media>:\stoc13_ml_quoc_le.pptx.lnk
<Drive name for removable media>:\waterresourcesag.pptx.lnk
<Drive name for removable media>:\indogerman2010.pptx.lnk
<Drive name for removable media>:\10thingscondoms.pdf.lnk
<Drive name for removable media>:\hypothyroidism_slides.pptx.lnk
<Drive name for removable media>:\mappingconcepthubberlin.ppt.lnk
<Drive name for removable media>:\calibre.png.lnk
<Drive name for removable media>:\cleanlyrics.png.lnk
<Drive name for removable media>:\bg_search_box.png.lnk
<Drive name for removable media>:\breakpoint.png.lnk
<Drive name for removable media>:\asm.png.lnk
<Drive name for removable media>:\arrow-down.png.lnk
<Drive name for removable media>:\background.png.lnk
<Drive name for removable media>:\delongcacert.pem.lnk
<Drive name for removable media>:\tunpersonalca1.pem.lnk
<Drive name for removable media>:\irgeek.pem.lnk
<Drive name for removable media>:\proposaltemplates.ppt.lnk
<Drive name for removable media>:\ck_ugo.pem.lnk
<Drive name for removable media>:\elvisimp.rdf.lnk
<Drive name for removable media>:\subjectclassification.xls.lnk
<Drive name for removable media>:\fiche_inscription_2015.zip.lnk
<Drive name for removable media>:\price.zip.lnk
<Drive name for removable media>:\price030215.zip.lnk
<Drive name for removable media>:\removedtitles_records.zip.lnk
<Drive name for removable media>:\subjectclassification.zip.lnk
<Drive name for removable media>:\productos.zip.lnk
<Drive name for removable media>:\excel_example.zip.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>:\national_autism_preparation_programs.xlsx.lnk
<Drive name for removable media>:\cee_mmsprogram_summary_public.xlsx.lnk
<Drive name for removable media>:\router_manual.rtf.lnk
<Drive name for removable media>:\krsweden.rtf.lnk
<Drive name for removable media>:\fiche_inscription_2015.xls.lnk
<Drive name for removable media>:\calculatorworksheet.xls.lnk
<Drive name for removable media>:\guide_reorganization_mapping.xls.lnk
<Drive name for removable media>:\price030215.xls.lnk
<Drive name for removable media>:\testwmv.wmv.lnk
<Drive name for removable media>:\flower_trans_matte.wmv.lnk
<Drive name for removable media>:\passport_pal.wmv.lnk
<Drive name for removable media>:\babyboymaintonotesbackground_pal.wmv.lnk
<Drive name for removable media>:\babyboymaintoscenesbackground.wmv.lnk
<Drive name for removable media>:\static_electricity_easy_and_quick_activities.rtf.lnk
<Drive name for removable media>:\phytoremediation.rtf.lnk
<Drive name for removable media>:\disclosuredetails.xlsx.lnk
<Drive name for removable media>:\7790_preview.pdf.lnk
<Drive name for removable media>:\ff_ot_user_guide.pdf.lnk
<Drive name for removable media>:\video_1.mp4.lnk
<Drive name for removable media>:\glidescope_review_rev_010.docx.lnk
<Drive name for removable media>:\hadac_newsletter_july_2010_final.docx.lnk
<Drive name for removable media>:\file_p_00000000_1371597592.docx.lnk
<Drive name for removable media>:\holycrosschurchinstructions.docx.lnk
<Drive name for removable media>:\adhd_and_obesity.docx.lnk
<Drive name for removable media>:\thlps_keeper_mayer_1965.docx.lnk
<Drive name for removable media>:\issi2013_template_for_posters.docx.lnk
<Drive name for removable media>:\508softwareandos.doc.lnk
<Drive name for removable media>:\applicantform_en.doc.lnk
<Drive name for removable media>:\cveuropeo.doc.lnk
<Drive name for removable media>:\tcm851ax32.exe.lnk
<Drive name for removable media>:\fi51.doc.lnk
<Drive name for removable media>:\testcertificate.cer.lnk
<Drive name for removable media>:\pmd.cer.lnk
<Drive name for removable media>:\contosoroot.cer.lnk
<Drive name for removable media>:\dashborder_96.bmp.lnk
<Drive name for removable media>:\toolbar.bmp.lnk
<Drive name for removable media>:\dashborder_192.bmp.lnk
<Drive name for removable media>:\split.avi.lnk
<Drive name for removable media>:\archer.avi.lnk
<Drive name for removable media>:\correct.avi.lnk
<Drive name for removable media>:\join.avi.lnk
<Drive name for removable media>:\delete.avi.lnk
<Drive name for removable media>:\contoso.cer.lnk
<Drive name for removable media>:\dotnetfx45_full_setup.exe.lnk
<Drive name for removable media>:\winmine.exe.lnk
<Drive name for removable media>:\wrar520.exe.lnk
<Drive name for removable media>:\clip_1080_5sec_10mbps_h264.mp4.lnk
<Drive name for removable media>:\3.jpeg.lnk
<Drive name for removable media>:\d0068197bb5a41fea16a220c45390606.mp4.lnk
<Drive name for removable media>:\dag2_panel1_320_ref.mov.lnk
<Drive name for removable media>:\scan.mov.lnk
<Drive name for removable media>:\4f0bf7ff71f28.jpg.lnk
<Drive name for removable media>:\1189.jpg.lnk
<Drive name for removable media>:\210252809.jpg.lnk
<Drive name for removable media>:\13.jpg.lnk
<Drive name for removable media>:\2.jpeg.lnk
<Drive name for removable media>:\168.jpeg.lnk
<Drive name for removable media>:\1189.jpeg.lnk
<Drive name for removable media>:\pushkin.jpeg.lnk
<Drive name for removable media>:\ituneshelpunavailable.html.lnk
<Drive name for removable media>:\garden.htm.lnk
<Drive name for removable media>:\adadsi.html.lnk
<Drive name for removable media>:\howto-index.html.lnk
<Drive name for removable media>:\iisstart.html.lnk
<Drive name for removable media>:\alert.html.lnk
<Drive name for removable media>:\api-hashmap.html.lnk
<Drive name for removable media>:\alert.htm.lnk
<Drive name for removable media>:\advice_process.htm.lnk
<Drive name for removable media>:\about.htm.lnk
<Drive name for removable media>:\tree_view.htm.lnk
<Drive name for removable media>:\iisstart.htm.lnk
<Drive name for removable media>:\ituneshelpunavailable.htm.lnk
<Drive name for removable media>:\1sm_price.zip.lnk
<Drive name for removable media>:\calculatorworksheet.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%\{2f49a57e-6617-d3d5-5e98-7cba6cb137da}\82f675e1.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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