Content

W32/Lovsan.worm.f

Type
Virus
SubType
Internet Worm
Discovery Date
09/01/2003
Length
11,808 bytes (Aspack + UPX)
Minimum DAT
4283 (08/06/2003)
Updated DAT
4323 (02/11/2004)
Minimum Engine
5.1.00
Description Added
09/01/2003
Description Modified
09/01/2003 5:17 AM (PT)
Risk Assessment
Corporate User
Low
Home User
Low

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Characteristics

This is another trivial variant of W32/Lovsan.worm . It is functionally identical to the original variant. The worm is proactively detected as Exploit-DcomRpc trojan since 4283 DATs (with scanning of compressed files enabled).

It is detected as W32/Lovsan.worm.gen with the 4288 DATs or greater (again with scanning of compressed files enabled). Identification as W32/Lovsan.worm.f will be available in the 4291 DATs.

Specific string content within the worm has been edited, thus modifying filename and Registry key details:

Filename

  • ENBIEI.EXE

Registry key

  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\
    Run
    "www.hidro.4t.com" = enbiei.exe

The target of the Denial of Service (DoS) attack (see W32/Lovsan.worm  for details) has been changed to:

tuiasi.ro  

This variant of the worm has been packed twice, with UPX then Aspack.

NB: Due to the expected rash of copycat worms with minor edits of string content, users are reminded to ensure that the scanning of compressed files is enabled for optimal detection.

Symptoms

  Presence of the following file in %WinDir%\System32 directory:

ENBIEI.EXE (11,808 bytes) (worm)

Method of Infection

See W32/Lovsan.worm description.

Removal

All Users:
Use specified engine and DAT files for detection and removal.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

Additional Windows ME/XP removal considerations

Variants

Variants

    N/A

All Information

Overview -

This is a virus detection. Viruses are programs that self-replicate recursively, meaning that infected systems spread the virus to other systems, which then propagate the virus further. While many viruses contain a destructive payload, it's quite common for viruses to do nothing more than spread from one system to another.

Aliases

  • W32/Blaster.worm.f

Characteristics

Characteristics -

This is another trivial variant of W32/Lovsan.worm . It is functionally identical to the original variant. The worm is proactively detected as Exploit-DcomRpc trojan since 4283 DATs (with scanning of compressed files enabled).

It is detected as W32/Lovsan.worm.gen with the 4288 DATs or greater (again with scanning of compressed files enabled). Identification as W32/Lovsan.worm.f will be available in the 4291 DATs.

Specific string content within the worm has been edited, thus modifying filename and Registry key details:

Filename

  • ENBIEI.EXE

Registry key

  • HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\
    Run
    "www.hidro.4t.com" = enbiei.exe

The target of the Denial of Service (DoS) attack (see W32/Lovsan.worm  for details) has been changed to:

tuiasi.ro  

This variant of the worm has been packed twice, with UPX then Aspack.

NB: Due to the expected rash of copycat worms with minor edits of string content, users are reminded to ensure that the scanning of compressed files is enabled for optimal detection.

Symptoms

Symptoms -

  Presence of the following file in %WinDir%\System32 directory:

ENBIEI.EXE (11,808 bytes) (worm)

Method of Infection

Method of Infection -

See W32/Lovsan.worm description.

Removal -

Removal -

All Users:
Use specified engine and DAT files for detection and removal.

Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).

Additional Windows ME/XP removal considerations

Variants

Variants -

    N/A