Symantec added a variant of mIRC Trojan to its virus definition on
2/13/2003, and the worm/Trojan was based the older mIRC Trojan (ocxdll.exe/
taskmngr.exe). The original analysis is at
http://www.klcconsulting.net/mirc_virus_analysis.htm

I saw a more than usual port 445 activities on incidents.org around 2/8-2/9,
and again on the last few days, so I cross-checked Symantec site, and found
the mIRC worm/Trojan variant, Backdoor.IRC.Zcrew. This variant used port
445 like the older ocxdll.exe Trojan. As I did some more research, I
noticed that TrendMicro analyzed this variant back in 12/3/2002, so I guess
it was not new, but just re-spreading.

I am curious how many people have seen this activities?
If you have a copy of this virus, can you contact me? I am interested in
analyzing this worm/Trojan file(s).

Symantec -
http://securityresponse.symantec.com/avcenter/venc/data/backdoor.irc.zcr
ew.h
tml
TrendMicro -
http://www.trendmicro.com/vinfo/virusencyclo/default5.asp?VName=TROJ_FLO
OD.B
I.DR

Thanks,
/Kyle

Kyle Lai, CISSP, CISA
KLC Consulting, Inc.
617-921-5410
klai (at) klcconsulting (dot) net [email concealed]
www.klcconsulting.net

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