Sophos

W32/Appflet-A

Aliases
  • W32.Appflet.A@mm
Category
Type
What to do
Prevalence low high

Summary

 
How it spreads
  • Email attachments
Affected operating systems Windows
Characteristics
  • Installs itself in the registry
Protection available since 21 June 2005 13:54:26 (GMT)
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Action

More Information

W32/Appflet-A is a mass mailing worm for the Windows platform that sends itself
to email addresses harvested from the infected computer.

W32/Appflet-A may arrive in an email with the following characteristics:

Subject line: Actors Sexy Pictures! (Axe Sexye Bazigarhaye Cinema)

Message text: chosen from:

Hi my friend. This is a funny sexy actors pictures. Enjoy it!!

Salam be tamamie baro bach inam ye collectione bahal az axaye sexye bazigaraye cinamast. bebinid va faghat Bekhandid!! ;)

Attachment: ActorsGallery.zip W32/Appflet-A is a mass mailing worm for the Windows platform that sends itself
to email addresses harvested from the infected computer.

W32/Appflet-A may arrive in the email with the following characteristics:

Subject line: Actors Sexy Pictures! (Axe Sexye Bazigarhaye Cinema)

Message text: chosen from:

Hi my friend. This is a funny sexy actors pictures. Enjoy it!!

Salam be tamamie baro bach inam ye collectione bahal az axaye sexye bazigaraye cinamast. bebinid va faghat Bekhandid!! ;)

Attachment: ActorsGallery.zip

When run W32/Appflet-A

-displays the following fake error message "The installation has failed to start because _agl43.dll was not found. Re-installing the application may fix this problem." with the title "error loading dll"

-copies itself to:

<Windows>\msgex32.exe
<System>\InstallGallery.exe
<System>\ircmgmt.exe

where msgex32.exe and ircmgmt.exe are filenames randomly created from the following strings:

mgr
mgmt
ex32
svc
explore
pw32
info
pager
alert
reg
sys
win
msg
reg
update
inet
pager
yahoo
msn
irc

-creates the following files:

<Windows>\Flagex.Flg
<System>\ActorsGallery.zip
<System>\sysfile.dat
<System>\zippwdinfo.dat

where ActorsGallery.zip is a password protected zipped copy of the worm and
zippwdinfo.dat is a data file that contains the password.

The following registry entry is created to run msgex32.exe on startup:

HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
msgex32
<Windows>\msgex32.exe

The following registry entry is set, so that ircmgmt.exe is run when files with extensions of EXE are opened/launched:

HKCR\exefile\shell\open\command
(default)
<System>\ircmgmt.exe "%1" %*

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