We received a similar ransom e-mail yesterday followed by a UDP flood attack. Here is a sample of the attack traffic we received as well as a copy of the ransom e-mail. Thought this might be useful to others who have been targeted as well. I will have to talk with our upstream providers to get a definitive on the size of the attacks. At the point in time we blackholed our ip we were seeing 20+Gbps. *Dec/07/2015 5:40:22PM *Here is a summary of the flows to our web server IP during the ddos event: ================================================ Top 10 flows by packets per pecond for dst IP: 96.43.134.147 Duration Proto Src IP Addr Src Pt Dst Pt Packets pps bps 0.001 UDP 175.43.224.99 1900 22456 2048 2.0 M 5.8 G 0.002 UDP 120.199.113.49 1900 54177 2048 1.0 M 2.8 G 0.002 UDP 27.208.164.227 1900 54177 2048 1.0 M 2.7 G 0.002 UDP 60.209.31.218 1900 16632 2048 1.0 M 3.0 G 0.002 UDP 27.220.71.238 1900 22456 2048 1.0 M 3.0 G 0.002 UDP 120.236.121.9 1900 62005 2048 1.0 M 2.5 G 0.002 UDP 104.137.222.90 1900 14944 2048 1.0 M 3.7 G 0.002 UDP 121.27.133.72 1900 44417 2048 1.0 M 3.0 G 0.002 UDP 92.241.8.75 53 5575 2048 1.0 M 12.4 G 0.002 UDP 120.197.56.134 1900 30672 2048 1.0 M 2.7 G Top 10 flows by flows per second for dst IP: 96.43.134.147 Duration Proto Src IP Addr Src Pt Dst Pt Packets pps bps 248.847 UDP 41.214.2.249 123 47207 8.6 M 34594 133.4 M 248.886 UDP 91.208.136.126 123 63775 6.7 M 26813 103.4 M 150.893 UDP 85.118.98.253 123 47207 5.1 M 33843 130.5 M 151.053 UDP 80.179.166.7 123 63775 5.0 M 33292 128.4 M 151.230 UDP 69.31.105.142 123 47207 4.9 M 32657 125.9 M 150.436 UDP 182.190.0.17 123 45291 4.8 M 32128 123.9 M 248.832 UDP 95.128.184.10 123 63775 4.7 M 19020 73.3 M 150.573 UDP 188.162.13.4 123 42571 4.6 M 30514 117.7 M 150.261 UDP 205.128.68.5 123 45291 4.2 M 27777 107.1 M 149.962 UDP 205.128.68.5 123 42571 4.1 M 27443 105.8 M Top 10 flows by bits per second for dst IP: 96.43.134.147 Duration Proto Src IP Addr Src Pt Dst Pt Packets pps bps 0.002 UDP 92.241.8.75 53 5575 2048 1.0 M 12.4 G 0.003 UDP 190.184.144.74 53 18340 2048 682666 8.3 G 0.003 UDP 190.109.218.69 53 63492 2048 682666 8.3 G 0.004 UDP 103.251.48.245 53 43701 2048 512000 6.2 G 0.004 UDP 46.149.191.239 53 58439 2048 512000 6.2 G 0.001 UDP 175.43.224.99 1900 22456 2048 2.0 M 5.8 G 0.006 UDP 37.72.70.85 53 63909 2048 341333 4.1 G 0.006 UDP 138.204.178.169 53 2162 2048 341333 4.1 G 0.006 UDP 200.31.97.107 53 33765 2048 341333 4.1 G 0.006 UDP 110.164.58.82 53 61397 2048 341333 4.1 G ================================================ Copy of the e-mail headers: Delivered-To: joe@joesdatacenter.com Received: by 10.79.27.84 with SMTP id b81csp1190623ivb; Mon, 7 Dec 2015 15:32:22 -0800 (PST) X-Received: by 10.25.88.208 with SMTP id m199mr28948lfb.157.1449531142088; Mon, 07 Dec 2015 15:32:22 -0800 (PST) Return-Path: <armada.collective@bk.ru> Received: from f369.i.mail.ru (f369.i.mail.ru. [217.69.141.11]) by mx.google.com with ESMTPS id 7si214394lfk.103.2015.12.07.15.32.21 for <joe@joesdatacenter.com> (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 07 Dec 2015 15:32:22 -0800 (PST) Received-SPF: pass (google.com: domain of armada.collective@bk.ru designates 217.69.141.11 as permitted sender) client-ip=217.69.141.11; Authentication-Results: mx.google.com; spf=pass (google.com: domain of armada.collective@bk.ru designates 217.69.141.11 as permitted sender) smtp.mailfrom=armada.collective@bk.ru; dkim=pass header.i=@bk.ru; dmarc=pass (p=NONE dis=NONE) header.from=bk.ru DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=bk.ru; s=mail; h=Content-Type:Message-ID:Reply-To:Date:MIME-Version:Subject:To:From; bh=1BpwCe2lM8814gJCW/09LwlVtrY6pZtMIFMB0Eprzmw=; b=DKaMWqtH3zre6+R+qmC6+5DTa/o3zx58ubNGalhnEP8cJUtZ/Ln8DnxkQojAdL46g06xlY8rl2QhH07Rm/BHMG9ahsqKSW59F04vcrSv6m6vLnu+4GVwW0ZnRrbkYIaKJohosgdUzUMew9naxuDpF+fD1UqPKCqSs2jgu5071Dw=; Received: from [95.191.131.93] (ident=mail) by f369.i.mail.ru with local (envelope-from <armada.collective@bk.ru>) id 1a65GX-0008H5-DO for joe@joesdatacenter.com; Tue, 08 Dec 2015 02:32:21 +0300 Received: from [95.191.131.93] by e.mail.ru with HTTP; Tue, 08 Dec 2015 02:32:21 +0300 From: =?UTF-8?B?QXJtYWRhIENvbGxlY3RpdmU=?= <armada.collective@bk.ru> To: joe@joesdatacenter.com Subject: =?UTF-8?B?UmFuc29tIHJlcXVlc3Q6IEREb1MgQXR0YWNr?= MIME-Version: 1.0 X-Mailer: Mail.Ru Mailer 1.0 X-Originating-IP: [95.191.131.93] Date: Tue, 08 Dec 2015 02:32:21 +0300 Reply-To: =?UTF-8?B?QXJtYWRhIENvbGxlY3RpdmU=?= <armada.collective@bk.ru> X-Priority: 3 (Normal) Message-ID: <1449531141.2696669@f369.i.mail.ru> Content-Type: multipart/alternative; boundary="--ALT--7N12aTwEB8hvVlFgA0NbUaD4Daicjipu1449531141" X-Mras: Ok X-Spam: undefined Copy of the e-mail: From: Armada Collective <armada.collective@bk.ru> Subject: Ransom request: DDoS Attack Message Body: FORWARD THIS MAIL TO WHOEVER IS IMPORTANT IN YOUR COMPANY AND CAN MAKE DECISION! We are Armada Collective. If you haven heard for us, use Google. Recently, we have launched some of the largest DDoS attacks in history. Check this out, for example: https://twitter.com/optucker/status/665470164411023360 (and it was measured while we were DDoS-ing 3 other sites at the same time) And this: https://twitter.com/optucker/status/666501788607098880 We will start DDoS-ing your network if you don't pay 20 Bitcoins @ 19zErvraWpnLj4Ga7nsLXh8C52g1zogYJe by Wednesday. Right now we will start small 30 minutes UDP attack on your site IP: 96.43.134.147 It will not be hard, just to prove that we are for real Armada Collective. If you don't pay by Wednesday, massive attack will start, price to stop will increase to 40 BTC and will go up 2 BTC for every hour of attack and attack will last for as long as you don't pay. In addition, we will be contacting affected customers to explain why they are down and recommend them to move to OVH. We will do the same on social networks. Our attacks are extremely powerful - peaks over 1 Tbps per second. Prevent it all with just 20 BTC @ 19zErvraWpnLj4Ga7nsLXh8C52g1zogYJe Do not reply, we will not read. Pay and we will know its you. AND YOU WILL NEVER AGAIN HEAR FROM US! And nobody will ever know you cooperated. -- Thank You, Joe Morgan - Owner Joe's Datacenter, LLC http://joesdatacenter.com 816-726-7615