Odd File in Network Share

I was updating ATI video drives for one of my users today when his AV (AVG Free) alerted me to an infected file in one of our major network shares.

I use MSE on almost every other PC in the building and they did not find any problems with the file. S & D Spybot did not detect anything amiss, either. Definitions were up to date. And I targeted the file inquestion to scan using bot MSE and S&D.

The file was named autorun.inf and it was hidden. There are a couple of 'Open=' entries in it, as well as a few 'Action=' and a 'UseAutoPlay=' entries listed as well. The character casing in all entries seems random. Since it appears to be all text (mostly non-sense), I feel it would be safe to paste here.

[dcsmzypna]
vppohubd=cpxcj
wcxub=vsbpwglx
wnqhofpcuqptge=fqspixw
ierfbnwjbquxvjy=xitgutp
rnthztlvwhlxxph=tgqlovdjzwzk
[autorun]
ywgwqqzzzj=saxwiezojfhbg
crefyjjzvgs=qmzlbdjxneiyot
yltliwsuzpeycd=yhrihhrdrij
dejwdznftale=jxjdbhib
ioknsoc=7995
simxldgafxloni=3390
open=niAqEg.Exe
tnhtvwcuaqnikp=1623
fwiwyx=9647
zitwniiffer=9976
acTiON=24805
lgzwfwnffbqj=sixtcotwmhjajr
vwpwjmbdoy=ludeyamz
pwqrxm=kpnltdysjj
zcscegasnyrmwn=glfrxpizjohky
embtgleol=okbueyzqtrxebdf
usEauTOpLAY=1
mtzqkiy=bmiywha
dmfkpdepupavira=tlxuaqhz
etgwn=prxtpuevbeujqzp
xdyxknniidklip=sbpztfxqzakpwpy
enjeitlcdctf=recxqswkvxjdo
[bjkytsuztplaq]
icjooh=fudvqckqphcobrq
mbqqaeoq=jqjgtxznplbpeu
mgdwokatax=ohxlg
saxlcmb=jgswdzmtfog
sklqzdxv=estby
[trjwemiyc]
uaujasceq=1825
khuhb=1918
qoghpyxw=5824
[autorun]
ptozngzgij=8775
buhsubranbp=7348
hubxjyvncnltnz=2754
ucimkydmiopkq=xzcwagifwtd
bsvse=ivnwkz
npcggx=yepifaje
hwcotjzydo=mliqgusvx
open=Niaqeg.EXe
tnpkucn=hrcssqxz
ibsrnynr=xkpsn
zpydydtdeo=xizejgyubz
mdeizwwgll=npckzzxypvmu
ACTIOn=21202
lzaome=xxqfg
ibevs=syxprpotuyaks
funstwg=mtowgszjbgye
bkymvqcgxfhapxw=iuwaejlxflkdzf
wdummkxyafuboe=adrhn
useaUToPLay=1
axppuwbhaamsg=5420
putyzbpn=4201
pcjoeabmeur=2098
[dtjsugseblyikwn]
tfras=1132
gzipxpc=7411
hffxdvzy=8533

AVG removed the file without a problem, but I'm concerned about not finding the file referenced in the 'open=' entries, which is always 'niAqEg.Exe' (character casing random, lol).

Any ideas where I can locate this file or how to find it. The autorun.inf file is on a network share on our main server. The is the main share where our companies app resides, so everyone uses it. I've had 3 users turn up with viruses today and I can't help wonder if this file has something to do with it.

Any help with this matter would be greatly appreciated.

Thanks.

Marshall