Trojan.Encoder.11532

Technical Information

To ensure autorun and distribution

Modifies the following registry keys

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '{46B67FCF-78F8-D687-6968-67C28298EEB1}' = '%ALLUSERSPROFILE%\{DAA657FF-50C8-4A97-6968-67C28298EEB1}\77198760.exe'

Creates or modifies the following files

<SYSTEM32>\tasks\{46b67fcf-78f8-d687-6968-67c28298eeb1}

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>:\roozenedowebinar.pptx.lnk
<Drive name for removable media>:\asaprojectcompetition.pptx.lnk
<Drive name for removable media>:\gruenspecht_02172016.pptx.lnk
<Drive name for removable media>:\hypothyroidism_slides.pptx.lnk
<Drive name for removable media>:\file1.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>:\sim_gametheory_to_finance.ppt.lnk
<Drive name for removable media>:\metac.ppt.lnk
<Drive name for removable media>:\block.png.lnk
<Drive name for removable media>:\video.mp4.lnk
<Drive name for removable media>:\bg_search_box.png.lnk
<Drive name for removable media>:\dissolveanother.png.lnk
<Drive name for removable media>:\breakpoint.png.lnk
<Drive name for removable media>:\ck_ugo.pem.lnk
<Drive name for removable media>:\hhhlcert.pem.lnk
<Drive name for removable media>:\server.pem.lnk
<Drive name for removable media>:\investmentbankca_ca8.pem.lnk
<Drive name for removable media>:\lom602.pdf.lnk
<Drive name for removable media>:\10thingscondoms.pdf.lnk
<Drive name for removable media>:\7790_preview.pdf.lnk
<Drive name for removable media>:\dualectls.pdf.lnk
<Drive name for removable media>:\fil_20060629111052.pdf.lnk
<Drive name for removable media>:\ff_ot_user_guide.pdf.lnk
<Drive name for removable media>:\cbz.png.lnk
<Drive name for removable media>:\video_1.mp4.lnk
<Drive name for removable media>:\stoc13_ml_quoc_le.pptx.lnk
<Drive name for removable media>:\price030215.xls.lnk
<Drive name for removable media>:\removedtitles_records.zip.lnk
<Drive name for removable media>:\price030215.zip.lnk
<Drive name for removable media>:\calculatorworksheet.zip.lnk
<Drive name for removable media>:\al.xlsx.lnk
<Drive name for removable media>:\applicant.xlsx.lnk
<Drive name for removable media>:\highly_cited_2001.xlsx.lnk
<Drive name for removable media>:\trtf_matrix2012_oct.xlsx.lnk
<Drive name for removable media>:\national_autism_preparation_programs.xlsx.lnk
<Drive name for removable media>:\fiche_inscription_2015.xls.lnk
<Drive name for removable media>:\removedtitles_records.xls.lnk
<Drive name for removable media>:\guide_reorganization_mapping.xls.lnk
<Drive name for removable media>:\subjectclassification.xls.lnk
<Drive name for removable media>:\skos.rdf.lnk
<Drive name for removable media>:\indogerman2010.pptx.lnk
<Drive name for removable media>:\testwmv.wmv.lnk
<Drive name for removable media>:\flower_trans_matte.wmv.lnk
<Drive name for removable media>:\babyboymaintonotesbackground_pal.wmv.lnk
<Drive name for removable media>:\waterlandhealthkano.rtf.lnk
<Drive name for removable media>:\static_electricity_easy_and_quick_activities.rtf.lnk
<Drive name for removable media>:\fungalnameauthors.rtf.lnk
<Drive name for removable media>:\phytoremediation.rtf.lnk
<Drive name for removable media>:\pandp.rtf.lnk
<Drive name for removable media>:\foaf.rdf.lnk
<Drive name for removable media>:\digest.rdf.lnk
<Drive name for removable media>:\sioc.rdf.lnk
<Drive name for removable media>:\elvisimp.rdf.lnk
<Drive name for removable media>:\excel_example.xls.lnk
<Drive name for removable media>:\clip_480_5sec_6mbps_h264.mp4.lnk
<Drive name for removable media>:\clip_1080_5sec_10mbps_h264.mp4.lnk
<Drive name for removable media>:\51.mp4.lnk
<Drive name for removable media>:\adhd_and_obesity.docx.lnk
<Drive name for removable media>:\sdszfo.docx.lnk
<Drive name for removable media>:\issi2013_template_for_posters.docx.lnk
<Drive name for removable media>:\holycrosschurchinstructions.docx.lnk
<Drive name for removable media>:\fi51.doc.lnk
<Drive name for removable media>:\lisp_success.doc.lnk
<Drive name for removable media>:\ovp25012015.doc.lnk
<Drive name for removable media>:\february_catalogue__2015.doc.lnk
<Drive name for removable media>:\contoso.cer.lnk
<Drive name for removable media>:\pmd.cer.lnk
<Drive name for removable media>:\sdksampleunprivdeveloper.cer.lnk
<Drive name for removable media>:\dotnetfx45_full_setup.exe.lnk
<Drive name for removable media>:\contosoroot.cer.lnk
<Drive name for removable media>:\contoso_1.cer.lnk
<Drive name for removable media>:\sdkfailsafeemulator.cer.lnk
<Drive name for removable media>:\dashborder_192.bmp.lnk
<Drive name for removable media>:\dashborder_120.bmp.lnk
<Drive name for removable media>:\dashborder_96.bmp.lnk
<Drive name for removable media>:\tileimage.bmp.lnk
<Drive name for removable media>:\toolbar.bmp.lnk
<Drive name for removable media>:\dial.bmp.lnk
<Drive name for removable media>:\archer.avi.lnk
<Drive name for removable media>:\delete.avi.lnk
<Drive name for removable media>:\split.avi.lnk
<Drive name for removable media>:\join.avi.lnk
<Drive name for removable media>:\contosoroot_1.cer.lnk
<Drive name for removable media>:\wrar520.exe.lnk
<Drive name for removable media>:\file_p_00000000_1371597592.docx.lnk
<Drive name for removable media>:\tcm851ax32.exe.lnk
<Drive name for removable media>:\scan.mov.lnk
<Drive name for removable media>:\ituneshelpunavailable.html.lnk
<Drive name for removable media>:\13.jpg.lnk
<Drive name for removable media>:\region-north-karelia.jpg.lnk
<Drive name for removable media>:\1189.jpg.lnk
<Drive name for removable media>:\3.jpg.lnk
<Drive name for removable media>:\pushkin.jpg.lnk
<Drive name for removable media>:\region-north-karelia.jpeg.lnk
<Drive name for removable media>:\4f0bf7ff71f28.jpeg.lnk
<Drive name for removable media>:\pushkin.jpeg.lnk
<Drive name for removable media>:\210252809.jpeg.lnk
<Drive name for removable media>:\168.jpeg.lnk
<Drive name for removable media>:\parnas_01.jpeg.lnk
<Drive name for removable media>:\trivial-merge.html.lnk
<Drive name for removable media>:\api-hashmap.html.lnk
<Drive name for removable media>:\calc.exe.lnk
<Drive name for removable media>:\about.html.lnk
<Drive name for removable media>:\howto-index.html.lnk
<Drive name for removable media>:\iisstart.html.lnk
<Drive name for removable media>:\browse.html.lnk
<Drive name for removable media>:\tree_view.html.lnk
<Drive name for removable media>:\tree_view.htm.lnk
<Drive name for removable media>:\advice_process.htm.lnk
<Drive name for removable media>:\64bit_notes.htm.lnk
<Drive name for removable media>:\iisstart.htm.lnk
<Drive name for removable media>:\ituneshelpunavailable.htm.lnk
<Drive name for removable media>:\notepad.exe.lnk
<Drive name for removable media>:\jre-7u75-windows-i586-iftw.exe.lnk
<Drive name for removable media>:\productos.zip.lnk
<Drive name for removable media>:\excel_example.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%\{daa657ff-50c8-4a97-6968-67c28298eeb1}\77198760.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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