DR/Dldr.Delf.ble - Dropper

See also

Summary

Full description

Statistics

Virus:	DR/Dldr.Delf.ble
Date discovered:	30/05/2007
Type:	Dropper
In the wild:	No
Reported Infections:	Low
Distribution Potential:	Low
Damage Potential:	Low to medium
Static file:	Yes
File size:	135.097 Bytes
MD5 checksum:	0B7014677a5e1422646ae8e9a31ffbef
VDF version:	6.38.01.194 - Wed, 30 May 2007 15:20 (GMT+1)
IVDF version:	6.38.01.205 - Wed, 30 May 2007 15:20 (GMT+1)

General Method of propagation:
   • No own spreading routine

Alias:
   • F-Secure: Trojan-Downloader.Win32.Delf.ble

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

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

Files The following files are created:

– Non malicious file:
• %WINDIR%\\system\svchest.reg

– %WINDIR%\\system\svchest.exe Furthermore it gets executed after it was fully created. Further investigation pointed out that this file is malware, too. Detected as: DR/Dldr.Delf.ble.1

Registry The following registry keys are added in order to load the service after reboot:

– [HKLM\SYSTEM\CurrentControlSet\Services\Indexingbox]
   • Type = dword:00000110
   • Start = dword:00000002
   • ErrorControl = dword:00000000
   • ImagePath = %WINDIR%\\system\svchest.exe
   • DisplayName = Indexing Helps
   • ObjectName = LocalSystem
   • Description = Indexingbox

– [HKLM\SYSTEM\CurrentControlSet\Services\Indexingbox\Enum]
   • 0 = Root\LEGACY_WINDOWS_REGEDIT_HELPS\0000
   • Count = dword:00000001
   • NextInstance = dword:00000001

– [HKLM\SYSTEM\CurrentControlSet\Services\Indexingbox\Security]
   • Security = %hex values%

See a brief description here.

Description inserted by Andrei Gherman on Wed, 30 May 2007 16:05 (GMT+1)
Description updated by Andrei Gherman on Wed, 30 May 2007 16:10 (GMT+1)

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