Virus:TR/KillFiles.JA
Date discovered:13/07/2006
Type:Trojan
In the wild:Yes
Reported Infections:Low
Distribution Potential:Low
Damage Potential:High
Static file:Yes
File size:9.008 Bytes
MD5 checksum:8bb7961e5b018190ac5950d96605e0b8
VDF version:6.35.00.126
IVDF version:6.35.00.154 - Wednesday, July 12, 2006

 General Method of propagation:
   • No own spreading routine


Aliases:
   •  Kaspersky: Trojan.Win32.KillFiles.ja
   •  TrendMicro: TROJ_KILLFILE.AV


Platforms / OS:
   • Windows 95
   • Windows 98
   • Windows 98 SE
   • Windows NT
   • Windows ME
   • Windows 2000
   • Windows XP
   • Windows 2003


Side effects:
   • Drops malicious files
   • Registry modification


Right after execution the following information is displayed:



 Files It copies itself to the following locations:
   • %SYSDIR%\Persian-X27.exe
   • %WINDIR%\Miscreant.exe



It drops copies of itself using a filename from lists
– To: %all directories% Using one of the following names:
   • OnLine.exe
   • Service.exe
   • Music.exe
   • Girls.exe
   • Women.exe
   • DJ Tattoo.exe
   • Funny.exe
   • Trollop.exe
   • Scamp.exe
   • Puck.exe
   • Pixy.exe
   • OedipusComplex.exe
   • Nursling.exe
   • Matrix.exe
   • Loon.exe
   • Phallic.exe
   • Watchfulness.exe
   • Heavy.exe
   • Nightcap.exe
   • Brilliance.exe
   • Wittol.exe
   • Whorish.exe
   • Whoreson.exe
   • Ribald.exe
   • Quean.exe
   • Nag.exe
   • Magdalen.exe
   • Mademe.exe
   • Harridan.exe
   • Harlot.exe
   • Hackney.exe
   • Fornicate.exe
   • Besom.exe
   • Townswoman.exe
   • Lupanar.exe
   • Fornication.exe
   • FancyWomen.exe
   • Drab.exe
   • Doxy.exe
   • Zoogenous.exe
   • Sodomyh.exe
   • Shoat.exe
   • Saucebox.exe
   • Pederasty.exe
   • Oaf.exe
   • Nanny.exe
   • Adulteress.exe
   • Abed.exe
   • Bedfellow.exe
   • Chemise.exe
   • Nightwalker.exe
   • Opiate.exe
   • Sly.exe
   • Whoremonger.exe
   • Wench.exe
   • Trul.exe
   • Prostitute.exe
   • Meretricious.exe
   • Callet.exe
   • GrassWidow.exe
   • Geisha.exe
   • Cockatrice.exe
   • Zoogenic.exe
   • Womb.exe
   • Viviparity.exe
   • Urchin.exe
   • Uniparous.exe
   • Tyke.exe
   • Terror.exe
   • Tad.exe
   • Stillborn.exe
   • Sissy.exe
   • Raptor.exe
   • Piddle.exe
   • Parturient.exe
   • Cuckold.exe
   • Penis.exe
   • Bedclothes.exe
   • Cohabitant.exe
   • Fluff.exe
   • Sagacity.exe
   • Knowing.exe
   • Ingenious.exe
   • Cunning.exe
   • Strumpet.exe
   • Streetwalker.exe
   • Stallion.exe
   • Moll.exe
   • Lighto'love.exe
   • Hetaira.exe
   • Courtezan.exe
   • Bordel.exe




It deletes the following files:
   • %SYSDIR%\Restore\rstrui.exe
   • %SYSDIR%\Restore\srframe.mmf
   • %SYSDIR%\Restore\srdiag.exe
   • %drive%:\%all directories%\*.*



The following file is created:

– %drive%:\%all directories%\%randomly chosen directory%@li-RNo.H.Txt This is a non malicious text file with the following content:
   • Hi,How Are You ?
     Ali Reza No.H.::.
     My name is FoovaPartB

 Registry The value of the following registry key is removed:

–  [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\
   .%letter%%letter%%letter%\Application]


The following registry keys are added:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
   • "NoDrives"=dword:00000004

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\
   .mp3]
   • "Application"="%SYSDIR%\Persian-X27.exe"

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\
   .mp3\OpenWithList]
   • "a"="%SYSDIR%\Persian-X27.exe"

– [HKCR\ArnhFile]
   • @="E:\PersianMiscreant-X27 File"

– [HKCR\ArnhFile\DefaultIcon]
   • @="%SYSDIR%\Persian-X27.exe"

– [HKCR\ArnhFile\shell]
– [HKCR\ArnhFile\shell\open]
– [HKCR\ArnhFile\shell\open\command]
   • @="%SYSDIR%\Persian-X27.exe %L"



The following registry keys are changed:

– [HKCR\.exe]
   Old value:
   • @="exefile"
   New value:
   • @="Mp3File"

– [HKCR\.%letter%%letter%%letter%]
   New value:
   • @="ArnhFile"

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\
   .%letter%%letter%%letter%]
   New value:
   • "Application"="%SYSDIR%\Persian-X27.exe"

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\FileExts\
   .%letter%%letter%%letter%\OpenWithList]
   New value:
   • "a"="%SYSDIR%\Persian-X27.exe"

– [HKCR\mp3file]
   New value:
   • @="E:\PersianMiscreant-X27 File"

– [HKCR\mp3file\DefaultIcon]
   New value:
   • @="%SYSDIR%\Persian-X27.exe"

– [HKCR\mp3file\shell\open\command]
   New value:
   • @="%SYSDIR%\Persian-X27.exe %L"

 File details Programming language:
 The malware program was written in Visual Basic.


Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with the following runtime packer:
   • FSG

Description inserted by Monica Ghitun on Thursday, July 13, 2006
Description updated by Monica Ghitun on Tuesday, August 1, 2006

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