Trojan.Encoder.11041

Technical Information

To ensure autorun and distribution

Modifies the following registry keys

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '{0DE958FD-A689-AEBF-657B-E4E7DE58BCC0}' = '%ALLUSERSPROFILE%\{91F970CD-8EB9-32AF-657B-E4E7DE58BCC0}\3c46a052.exe'

Creates or modifies the following files

<SYSTEM32>\tasks\{0de958fd-a689-aebf-657b-e4e7de58bcc0}

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>:\indogerman2010.pptx.lnk
<Drive name for removable media>:\hypothyroidism_slides.pptx.lnk
<Drive name for removable media>:\roozenedowebinar.pptx.lnk
<Drive name for removable media>:\asaprojectcompetition.pptx.lnk
<Drive name for removable media>:\waterresourcesag.pptx.lnk
<Drive name for removable media>:\metac.ppt.lnk
<Drive name for removable media>:\ksearch_esa_talk.ppt.lnk
<Drive name for removable media>:\sacs_presentation_sacs_qep_improving_rt_education_final.ppt.lnk
<Drive name for removable media>:\background.png.lnk
<Drive name for removable media>:\ff_ot_user_guide.pdf.lnk
<Drive name for removable media>:\dissolveanother.png.lnk
<Drive name for removable media>:\cbz.png.lnk
<Drive name for removable media>:\block.png.lnk
<Drive name for removable media>:\cleanlyrics.png.lnk
<Drive name for removable media>:\irgeek.pem.lnk
<Drive name for removable media>:\tunpersonalca1.pem.lnk
<Drive name for removable media>:\cert.pem.lnk
<Drive name for removable media>:\ck_ugo.pem.lnk
<Drive name for removable media>:\lom602.pdf.lnk
<Drive name for removable media>:\2015-02-patients-topic-work-related-asthma-jobs.pdf.lnk
<Drive name for removable media>:\breakpoint.png.lnk
<Drive name for removable media>:\fil_20060629111052.pdf.lnk
<Drive name for removable media>:\middaugh_keynote.pptx.lnk
<Drive name for removable media>:\excel_example.xls.lnk
<Drive name for removable media>:\fiche_inscription_2015.zip.lnk
<Drive name for removable media>:\1sm_price.zip.lnk
<Drive name for removable media>:\productos.zip.lnk
<Drive name for removable media>:\suspendedcompanies.xlsx.lnk
<Drive name for removable media>:\al.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>:\guide_reorganization_mapping.xls.lnk
<Drive name for removable media>:\1sm_price.xls.lnk
<Drive name for removable media>:\sioc.rdf.lnk
<Drive name for removable media>:\samieee_obiee_presentation.pptx.lnk
<Drive name for removable media>:\subjectclassification.xls.lnk
<Drive name for removable media>:\babyboymaintoscenesbackground_pal.wmv.lnk
<Drive name for removable media>:\babyboymaintoscenesbackground.wmv.lnk
<Drive name for removable media>:\waterlandhealthkano.rtf.lnk
<Drive name for removable media>:\phytoremediation.rtf.lnk
<Drive name for removable media>:\pubnet_855.rtf.lnk
<Drive name for removable media>:\taxus_baccata.rdf.lnk
<Drive name for removable media>:\elvisimp.rdf.lnk
<Drive name for removable media>:\contenttypes.rdf.lnk
<Drive name for removable media>:\productos.xls.lnk
<Drive name for removable media>:\spib_pima.pdf.lnk
<Drive name for removable media>:\7790_preview.pdf.lnk
<Drive name for removable media>:\51.mp4.lnk
<Drive name for removable media>:\utorrent.exe.lnk
<Drive name for removable media>:\tcm851ax32.exe.lnk
<Drive name for removable media>:\skypesetup.exe.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>:\hadac_newsletter_july_2010_final.docx.lnk
<Drive name for removable media>:\fi51.doc.lnk
<Drive name for removable media>:\ovp25012015.doc.lnk
<Drive name for removable media>:\jre-7u75-windows-i586-iftw.exe.lnk
<Drive name for removable media>:\february_catalogue__2015.doc.lnk
<Drive name for removable media>:\sdkfailsafeemulator.cer.lnk
<Drive name for removable media>:\sdksampleunprivdeveloper.cer.lnk
<Drive name for removable media>:\contoso_1.cer.lnk
<Drive name for removable media>:\dashborder_192.bmp.lnk
<Drive name for removable media>:\dial.bmp.lnk
<Drive name for removable media>:\default.bmp.lnk
<Drive name for removable media>:\dashborder_96.bmp.lnk
<Drive name for removable media>:\correct.avi.lnk
<Drive name for removable media>:\delete.avi.lnk
<Drive name for removable media>:\testcertificate.cer.lnk
<Drive name for removable media>:\chromesetup.exe.lnk
<Drive name for removable media>:\notepad.exe.lnk
<Drive name for removable media>:\calc.exe.lnk
<Drive name for removable media>:\clip_1080_5sec_10mbps_h264.mp4.lnk
<Drive name for removable media>:\parnas_01.jpeg.lnk
<Drive name for removable media>:\spanner.mov.lnk
<Drive name for removable media>:\etc6_m_1.mov.lnk
<Drive name for removable media>:\region-north-karelia.jpg.lnk
<Drive name for removable media>:\210252809.jpg.lnk
<Drive name for removable media>:\3.jpeg.lnk
<Drive name for removable media>:\pushkin.jpeg.lnk
<Drive name for removable media>:\13.jpeg.lnk
<Drive name for removable media>:\2.jpeg.lnk
<Drive name for removable media>:\210252809.jpeg.lnk
<Drive name for removable media>:\4f0bf7ff71f28.jpeg.lnk
<Drive name for removable media>:\winmine.exe.lnk
<Drive name for removable media>:\ituneshelpunavailable.html.lnk
<Drive name for removable media>:\tree_view.html.lnk
<Drive name for removable media>:\api-hashmap.html.lnk
<Drive name for removable media>:\trivial-merge.html.lnk
<Drive name for removable media>:\alert.html.lnk
<Drive name for removable media>:\tree_view.htm.lnk
<Drive name for removable media>:\alert.htm.lnk
<Drive name for removable media>:\garden.htm.lnk
<Drive name for removable media>:\browse.htm.lnk
<Drive name for removable media>:\price030215.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%\{91f970cd-8eb9-32af-657b-e4e7de58bcc0}\3c46a052.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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