Trojan.Siggen20.33801

Technical Information

To ensure autorun and distribution

Creates or modifies the following files

<SYSTEM32>\tasks\idlei
<SYSTEM32>\tasks\idle
<SYSTEM32>\tasks\iexplorei
<SYSTEM32>\tasks\iexplore
<SYSTEM32>\tasks\systems
<SYSTEM32>\tasks\firefoxf
<SYSTEM32>\tasks\firefox
<SYSTEM32>\tasks\system
<SYSTEM32>\tasks\spoolsvs
<SYSTEM32>\tasks\spoolsv
<SYSTEM32>\tasks\winlogon
<SYSTEM32>\tasks\winlogonw
<SYSTEM32>\tasks\wmiprvsew
<SYSTEM32>\tasks\wmiprvse
<SYSTEM32>\tasks\mdm
<SYSTEM32>\tasks\mdmm

Creates the following files on removable media

<Drive name for removable media>:\e9d56d98c3bd11328109add23b9e1505.exe
<Drive name for removable media>:\iisstart.lnk
<Drive name for removable media>:\alert.lnk
<Drive name for removable media>:\adadsi.lnk
<Drive name for removable media>:\howto-index.lnk
<Drive name for removable media>:\1189.lnk
<Drive name for removable media>:\region-north-karelia.lnk
<Drive name for removable media>:\13.lnk
<Drive name for removable media>:\3.lnk
<Drive name for removable media>:\parnas_01.lnk
<Drive name for removable media>:\2.lnk
<Drive name for removable media>:\4f0bf7ff71f28.lnk
<Drive name for removable media>:\210252809.lnk
<Drive name for removable media>:\firefly1.lnk
<Drive name for removable media>:\etc6_m_1.lnk
<Drive name for removable media>:\tunpersonalca1.lnk
<Drive name for removable media>:\d0068197bb5a41fea16a220c45390606.lnk
<Drive name for removable media>:\video.lnk
<Drive name for removable media>:\video_1.lnk
<Drive name for removable media>:\10thingscondoms.lnk
<Drive name for removable media>:\ff_ot_user_guide.lnk
<Drive name for removable media>:\fil_20060629111052.lnk
<Drive name for removable media>:\spib_pima.lnk
<Drive name for removable media>:\bc01.lnk
<Drive name for removable media>:\dualectls.lnk
<Drive name for removable media>:\hhhlcert.lnk
<Drive name for removable media>:\systisoft.lnk
<Drive name for removable media>:\cert.lnk
<Drive name for removable media>:\ck.lnk
<Drive name for removable media>:\tree_view.lnk
<Drive name for removable media>:\scan.lnk
<Drive name for removable media>:\trivial-merge.lnk
<Drive name for removable media>:\sdkfailsafeemulator.lnk
<Drive name for removable media>:\join.lnk
<Drive name for removable media>:\archer.lnk
<Drive name for removable media>:\dashborder_144.lnk
<Drive name for removable media>:\dashborder_192.lnk
<Drive name for removable media>:\dashborder_96.lnk
<Drive name for removable media>:\toolbar.lnk
<Drive name for removable media>:\dialmap.lnk
<Drive name for removable media>:\coffee.lnk
<Drive name for removable media>:\dashborder_120.lnk
<Drive name for removable media>:\sdksampleunprivdeveloper.lnk
<Drive name for removable media>:\contosoroot.lnk
<Drive name for removable media>:\pmd.lnk
<Drive name for removable media>:\testcertificate.lnk
<Drive name for removable media>:\sdksampleprivdeveloper.lnk
<Drive name for removable media>:\utorrent.lnk
<Drive name for removable media>:\testee.lnk
<Drive name for removable media>:\508softwareandos.lnk
<Drive name for removable media>:\ovp25012015.lnk
<Drive name for removable media>:\weeklysheet1215.lnk
<Drive name for removable media>:\lisp_success.lnk
<Drive name for removable media>:\uep_form_786_bulletin_1726i602.lnk
<Drive name for removable media>:\hadac_newsletter_july_2010_final.lnk
<Drive name for removable media>:\nwfieldnotes1966.lnk
<Drive name for removable media>:\issi2013_template_for_posters.lnk
<Drive name for removable media>:\holycrosschurchinstructions.lnk
<Drive name for removable media>:\wrar520.lnk
<Drive name for removable media>:\jre-7u75-windows-i586-iftw.lnk
<Drive name for removable media>:\skypesetup.lnk
<Drive name for removable media>:\dotnetfx45_full_setup.lnk
<Drive name for removable media>:\dissolveanother.lnk

Malicious functions

To complicate detection of its presence in the operating system,

adds antivirus exclusion:

'<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Command Add-MpPreference -ExclusionPath 'C:\'

Reads files which store third party applications passwords

%HOMEPATH%\desktop\holycrosschurchinstructions.docx
%HOMEPATH%\desktop\weeklysheet1215.doc

Modifies file system

Creates the following files

<Current directory>\idle.exe
<Current directory>\6ccacd8608530f
C:\far2\plugins\network\iexplore.exe
C:\far2\plugins\network\9db6e019d4f04e
C:\recovery\1195d5a8-f371-11e4-9c00-dd3082671db2\firefox.exe
C:\recovery\1195d5a8-f371-11e4-9c00-dd3082671db2\0fc223bdacedc3
C:\msocache\all users\{90140000-0016-0409-1000-0000000ff1ce}-c\system.exe
C:\msocache\all users\{90140000-0016-0409-1000-0000000ff1ce}-c\27d1bcfc3c54e0
<Current directory>\spoolsv.exe
<Current directory>\f3b6ecef712a24
<Current directory>\winlogon.exe
<Current directory>\cc11b995f2a76d
C:\totalcmd\language\wmiprvse.exe
C:\totalcmd\language\24dbde2999530e
C:\msocache\all users\{90140000-0115-0409-1000-0000000ff1ce}-c\1033\mdm.exe
C:\msocache\all users\{90140000-0115-0409-1000-0000000ff1ce}-c\1033\559fba5f8e4410

Sets the 'hidden' attribute to the following files

<Drive name for removable media>:\e9d56d98c3bd11328109add23b9e1505.exe

Deletes the following files

<Drive name for removable media>:\trivial-merge.lnk
<Drive name for removable media>:\13.lnk

Network activity

Connects to

'bo###ntosh.com':80

TCP

HTTP GET requests

http://bo###ntosh.com/processpollLowEternal/4Serverjs/Protect41/RequestgameServertestWordpress.php?Ui############################################################################################...
http://bo###ntosh.com/processpollLowEternal/4Serverjs/Protect41/RequestgameServertestWordpress.php?Ap############################################################################################...

UDP

DNS ASK bo###ntosh.com

Miscellaneous

Creates and executes the following

'<Current directory>\spoolsv.exe'
'<Current directory>\spoolsv.exe' ' (with hidden window)

Executes the following

'<SYSTEM32>\schtasks.exe' /create /tn "IdleI" /sc MINUTE /mo 7 /tr "'<Current directory>\Idle.exe'" /f
'<SYSTEM32>\schtasks.exe' /create /tn "mdmm" /sc MINUTE /mo 11 /tr "'C:\MSOCache\All Users\{90140000-0115-0409-1000-0000000FF1CE}-C\1033\mdm.exe'" /f
'<SYSTEM32>\schtasks.exe' /create /tn "WmiPrvSEW" /sc MINUTE /mo 6 /tr "'C:\totalcmd\LANGUAGE\WmiPrvSE.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "WmiPrvSE" /sc ONLOGON /tr "'C:\totalcmd\LANGUAGE\WmiPrvSE.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "WmiPrvSEW" /sc MINUTE /mo 7 /tr "'C:\totalcmd\LANGUAGE\WmiPrvSE.exe'" /f
'<SYSTEM32>\schtasks.exe' /create /tn "winlogonw" /sc MINUTE /mo 5 /tr "'<Current directory>\winlogon.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "winlogon" /sc ONLOGON /tr "'<Current directory>\winlogon.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "winlogonw" /sc MINUTE /mo 10 /tr "'<Current directory>\winlogon.exe'" /f
'<SYSTEM32>\schtasks.exe' /create /tn "spoolsvs" /sc MINUTE /mo 6 /tr "'<Current directory>\spoolsv.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "spoolsv" /sc ONLOGON /tr "'<Current directory>\spoolsv.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "spoolsvs" /sc MINUTE /mo 12 /tr "'<Current directory>\spoolsv.exe'" /f
'<SYSTEM32>\schtasks.exe' /create /tn "SystemS" /sc MINUTE /mo 14 /tr "'C:\MSOCache\All Users\{90140000-0016-0409-1000-0000000FF1CE}-C\System.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "System" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0016-0409-1000-0000000FF1CE}-C\System.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "SystemS" /sc MINUTE /mo 7 /tr "'C:\MSOCache\All Users\{90140000-0016-0409-1000-0000000FF1CE}-C\System.exe'" /f
'<SYSTEM32>\schtasks.exe' /create /tn "firefoxf" /sc MINUTE /mo 5 /tr "'C:\Recovery\1195d5a8-f371-11e4-9c00-dd3082671db2\firefox.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "firefox" /sc ONLOGON /tr "'C:\Recovery\1195d5a8-f371-11e4-9c00-dd3082671db2\firefox.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "firefoxf" /sc MINUTE /mo 11 /tr "'C:\Recovery\1195d5a8-f371-11e4-9c00-dd3082671db2\firefox.exe'" /f
'<SYSTEM32>\schtasks.exe' /create /tn "iexplorei" /sc MINUTE /mo 7 /tr "'C:\Far2\Plugins\Network\iexplore.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "iexplore" /sc ONLOGON /tr "'C:\Far2\Plugins\Network\iexplore.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "iexplorei" /sc MINUTE /mo 8 /tr "'C:\Far2\Plugins\Network\iexplore.exe'" /f
'<SYSTEM32>\schtasks.exe' /create /tn "IdleI" /sc MINUTE /mo 8 /tr "'<Current directory>\Idle.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "Idle" /sc ONLOGON /tr "'<Current directory>\Idle.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "mdm" /sc ONLOGON /tr "'C:\MSOCache\All Users\{90140000-0115-0409-1000-0000000FF1CE}-C\1033\mdm.exe'" /rl HIGHEST /f
'<SYSTEM32>\schtasks.exe' /create /tn "mdmm" /sc MINUTE /mo 7 /tr "'C:\MSOCache\All Users\{90140000-0115-0409-1000-0000000FF1CE}-C\1033\mdm.exe'" /rl HIGHEST /f

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