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Date discovered:19/02/2008
In the wild:Yes
Reported Infections:Low
Distribution Potential:Medium
Damage Potential:Low to medium
Static file:Yes
File size:1.470.464 Bytes
MD5 checksum:b1a0bd24b09ccb213a4d961f53ff9d0F
VDF version:
IVDF version: - Tuesday, February 19, 2008

 General Method of propagation:
   • Peer to Peer

   •  Kaspersky: P2P-Worm.Win32.Archivarius.a
   •  F-Secure: P2P-Worm.Win32.Archivarius.a
   •  Sophos: Troj/Agent-GPY
   •  Panda: W32/Archivarius.A.worm
   •  Grisoft: Worm/Delf.HEE
   •  Eset: Win32/Archivarius.A

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

Side effects:
   • Drops a file
   • Drops a malicious file
   • Registry modification

Right after execution the following information is displayed:

 Files It copies itself to the following locations:
   • %SYSDIR%\WinSecure.exe
   • %TEMPDIR%\Installer-Crack-Keygen.exe

It copies itself within archives to the following locations:
   • %TEMPDIR%\xx%number%
   • %TEMPDIR%\

The following files are created:

– Non malicious file:
   • %SYSDIR%\rar.exe

– Temporary files that might be deleted afterwards:
   • %TEMPDIR%\xx%number%
   • %TEMPDIR%\

%TEMPDIR%\temp_01.exe Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: TR/Delf.own

 Registry The following registry key is added in order to run the process after reboot:

– [HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\
   • Windows Security Tool="WinSecure.exe"

The following registry keys are changed:

– [HKLM\Software\Microsoft\RFC1156Agent\CurrentVersion\Parameters]
   New value:
   • TrapPollTimeMilliSecs = 00003a98

– [HKLM\SOFTWARE\Licenses]
   New value:
   • {K7C0DB872A3F777C0} = %hex values%
   • {I29A5EA887C231048} = %hex values%

 P2P In order to infect other systems in the Peer to Peer network community the following action is performed:   It retrieves shared folders by querying the following registry keys:
   • [SOFTWARE\Kazaa\LocalContent\DownloadDir]
   • [Software\Microsoft\Windows\CurrentVersion\Explorer\ShellFolders\Desktop\LimeWire Shared]
   • [Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\Desktop\Shared]
   • [Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\Personal\Shared]
   • [Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\Personal\LimeWire\Shared]
   • [Software\Shareaza\Shareaza\Downloads\CompletePath]
   • [Software\Shareaza\Shareaza\Downloads\CollectionPath]
   • [Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\Local AppData\Ares\My Shared Folder]
   • [Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\AppData\Warez]
   • [Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\AppData\My Downloads]
   • [Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders\Personal\eDonkey2000 Downloads]

   If successful, the following files are created:
   • Nero 8 Ultra Edition Keygen.rar; Adobe Photoshop CS3
      Keygenerator.rar; Windows XP Home-Professional Genuine Crack.rar;
      Microsoft Office 2008 Crack.rar; FlashGet Ver; Serif
      WebPlus v10.1.1.rar; NetLimiter 2 Pro v2.0.10.1.rar; ZoomPlayer WMV
      Professional v5.01.rar; Video Snapshots Genius v2.1.rar; Just Audio
      Management v3.0.38.rar; Image Cut v1.5.rar; ZeallSoft Music DVD Maker
      v2.2.rar; Winamp Pro v5.52.rar; TextAloud v2.268.rar; Panda Antivirus
      2008 + patcheado actualizado 02-08.rar; Caribbean Hideaway v1.0.rar;
      MasterCAM X2 v.11 SP1.rar; Digital Tutors Introduction To Photoshop
      CS3 2CD ISO.rar; PTC Pro Engineer Wildfire v.4 Graphics Library.rar;
      DiskWarrior v.4.1 rev42 Bootable CD Retail MAC.rar; RoketBox Disk1
      DVD.rar; WireShark University Training Course Bootcamp 02 TCP-IP.rar;
      The Print Shop Pro Publisher 22 Deluxe DVD.rar; Super DVD Creator
      9.rar; VirtualDJ 5.0.rar; X-NetStat Professional 5.5.rar; Boilsoft
      Video Splitter 5.01.rar; Roxio Easy Media Creator Suite 10.rar; Radmin
      Remote Administrator 3.0.rar; LimeWire Pro 4.17.0.rar; Network Magic
      Pro 4.2.7234.0.rar; Acronis Disk Director Suite 10.0.2160.rar; Super
      Internet TV Satellite 7.1.1.rar; Print Folder Pro 3.3.rar; Active
      Webcam 10.1.rar; WinAVI Video Converter 9.rar; Eset NOD32 Complete
      Software Collection 2008.rar; Folder Guard Pro 7.92.rar; Kaspersky
      Internet Security Anti-Virus working KEY (02-08).rar; Winamp
      5.5.2 (funciona con el keygenerador de serial).rar; Movie Label 2008
      3.0.rar; Microsoft Exchange Server 2007.rar; ImTOO 3GP Video Converter
      3.1.23.rar; TuneUp Utilities 2008.rar; Vista Manager 1.4.rar; Sony
      Vegas Pro Studio 8 20071.rar; How to Cheat In Photoshop CS3
      Content.rar; NodLogin 8.0.rar; Smart Wedding 4.0.rar; FrostWire
      4.13.4, Like Limewire But Better.rar; Windows XP 2.0.rar; McAfee Total
      Protection Retail 2008 (con el serial funcionante).rar; BitDefender
      Internet Security (2008).rar; Alive YouTube Video Converter; Fraps Registered 2.9.2.rar; YouTube Get 4.2 (descarga
      videos da youtube ... mui bueno).rar; Microsoft Office Professional
      2007 (con el keygenerador que funciona).rar; UnHackMe 4.9.rar;
      Seepassword 2.055.rar; CloneDVD Mobile; AnyDVD HD
      (graba dvd funcionante).rar; DVDFab Platinum; 8 Start
      Launcher.rar; Windows Media Player 11 con patcheada actualizada

   The archive contains a copy of the malware inside.

The shared directory might look like the following:

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

Runtime packer:
In order to aggravate detection and reduce size of the file it is packed with a runtime packer.

Description inserted by Ana Maria Niculescu on Friday, April 11, 2008
Description updated by Andrei Gherman on Friday, April 18, 2008

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