W32/Lerma-A

Category: Viruses and Spyware
Type: Win32 worm
Prevalence: No Reports

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W32/Lerma-A is a worm for the Windows platform. W32/Lerma-A can spread to other networked computers.

W32/Lerma-A may also overwrite files with the following file extensions with copies of itself:

jpg
pdf
txt
rtf
bmp
zip
doc
xls
mp3
hlp
mpg
htm
html
rar
gif
ppt
exe
scr
pif
cmd
bat
com

Overwritten files with non-executable extensions will have .exe appended to the full filename. W32/Lerma-A is a worm for the Windows platform. W32/Lerma-A can spread to other networked computers.

When first run W32/Lerma-A copies itself to:

<Windows>\Ermasys32.exe
<Windows>\Lasiaf.exe
<Windows>\csrss.exe
<System>\Ermasys32.exe
<System>\kernel32.exe
<System>\mode.exe

W32/Lerma-A may also overwrite files with the following extensions with copies of itself:

jpg
pdf
txt
rtf
bmp
zip
doc
xls
mp3
hlp
mpg
htm
html
rar
gif
ppt
exe
scr
pif
cmd
bat
com

Overwritten files with non-executable extensions will have .exe appended to the full filename.

The following registry entries are created to run Ermasys32.exe on startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
LasErma
<Windows>\Ermasys32.exe

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices
LasErma
<Windows>\Ermasys32.exe

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