Compte hotmail piraté

Je pense que mon compte hotmail a été piraté.
Il a envoyé à tous mes contacts un mail de hameconnage avec pièce jointe.
J’ai changé mon mot de passe.
Voici toutes les infos du mail envoyé (wolf.clement@live.fr étant mon mail) :

X-Message-Delivery: Vj0xLjE7dXM9MDtsPTA7YT0xO0Q9MTtTQ0w9Mw==
X-Message-Status: n
X-SID-PRA: =?gb2312?B?Q2yopm1lbnQgV29sZg==?= wolf.clement@live.fr
X-AUTH-Result: NONE
X-Message-Info: UZmYcfFpTCdXTZQjMMyhpd2/xl3hGy/McpD0jtBwsC9r1H3bEedZBkOBe4rRE41fMQV1G0q5A8mSL3pID9OQt2G/2i3NNscRZS6f7sLqiuCYSz0Gl7w52Q==
Received: from snt0-omc2-s34.snt0.hotmail.com ([65.55.90.109]) by snt0-hmmc2-f5.Snt0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4675);
Mon, 14 Mar 2011 07:40:14 -0700
Received: from SNT131-W56 ([65.55.90.73]) by snt0-omc2-s34.snt0.hotmail.com with Microsoft SMTPSVC(6.0.3790.4675);
Mon, 14 Mar 2011 07:40:14 -0700
Message-ID: SNT131-w566BE6226ADC809379473E92CC0@phx.gbl
Return-Path: wolf.clement@live.fr
Content-Type: multipart/alternative;
boundary=“37b6ef22-afbc-485a-a482-65aa2f115b25
X-Originating-IP: [123.11.141.50]
From: =?gb2312?B?Q2yopm1lbnQgV29sZg==?= wolf.clement@live.fr
To: adj01@hotmail.fr
Subject: RE:What a good deal
Date: Mon, 14 Mar 2011 15:40:13 +0100
Importance: Normal
MIME-Version: 1.0
X-OriginalArrivalTime: 14 Mar 2011 14:40:14.0007 (UTC) FILETIME=[BA8CAC70:01CBE255]

37b6ef22-afbc-485a-a482-65aa2f115b25
Content-Type: text/plain; charset=“gb2312”
Content-Transfer-Encoding: 8bit

really good news ! Last week, I order one Apple Laptop from
this website: www.eleagate.com
I’ve received the item today
It’s amazing! The item is original, brand new and has high quality,
but it’s much cheaper. I’m pleased to share this good news with you!
I believe you will find what you want there and have an good experience.
All the products are free shipping
kW5uZl3S
9881146
vudbemm
TNZYNDR

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»ÍÒ°ÖÞ±¢¸éÖã
37b6ef22-afbc-485a-a482-65aa2f115b25
Content-Type: text/html; charset=“gb2312”
Content-Transfer-Encoding: 8bit

really good news ! Last week, I order one Apple Laptop from 
this website: www.eleagate.com 

I've received the item today
It's amazing! The item is original, brand new and has high quality, 
but it's much cheaper. I'm pleased to share this good news with you! 
I believe you will find what you want there and have an good experience.<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" />

All the products are free shipping

kW5uZl3S
9881146
vudbemm
TNZYNDR
Âó
·ê
Éñ
´í
±é
¶¦

»ÍÒ°ÖÞ±¢¸éÖã
--_37b6ef22-afbc-485a-a482-65aa2f115b25_--

Y a-t-il un moyen de le signaler à hotmail ? Que faire ?

Note : je n’utilise presque jamais cette adresse mail.

J’ai effectué un scan rapide avec malwarebyte : il a effacé seekservice dans application data.