The 2013 Internet Security Threat Report: Year of the Mega Data Breach

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Once again, it’s time to reveal the latest findings from our Internet Security Threat Report (ISTR), which looks at the current state of the threat landscape, based on our research and analysis from the past year. Key trends from this year’s report include the large increase in data breaches and targeted attacks, the evolution of mobile malware and ransomware, and the potential threat posed by the Internet of Things. We’ll explore each of these topics in greater detail below.

The year of the mega data breach
While 2011 was hailed by many as the “Year of the Data Breach,” breaches in 2013 far surpassed previous years in size and scale. For 2013, we found the number of data breaches grew 62 percent from 2012, translating to more than 552 million identities exposed last year – an increase of 368 percent. This was also the first year that the top eight data breaches each resulted in the loss of tens of millions of identities – making it truly the year of the “mega” data breach. By comparison, only one data breach in 2012 reached that distinction.

Attackers set their sights on medium-sized businesses
If you’ve been following our reports, you know that small and medium-sized businesses (SMBs) are a key target for attackers, and this year proved no exception to the trend. In 2013, SMBs collectively made up more than half of all targeted attacks at 61 percent – up from 50 percent in 2012 – with medium-sized (2,500+ employees) businesses seeing the largest increase.

Attacks against businesses of all sizes grew, with an overall increase of 91 percent from 2012. Similar to last year, cybercriminals deployed watering hole attacks and spear-phishing to increase the efficiency of their campaigns. However, spear-phishing campaigns were down 23 percent, with cybercriminals relying less on emails to carry out their attack campaigns. Watering hole attacks allowed the bad guys to run more campaigns through drive-by-downloads, targeting victims at the websites they frequently visit. Efforts were also aided by a 61 percent increase in zero-day vulnerabilities, which allowed attackers to set up on poorly patched sites and infect their victims with little or no additional effort required. 

Government remained the most targeted industry (16 percent of all attacks). This year we looked at not only the volume of attacks but also at who are the preferred targets and what are the odds of being singled out. The bad news is that no one faces favorable odds and we all need to be concerned about targeted attacks. However, looking at the odds produced some surprises. If you’re a personal assistant working at a mid-sized mining company, I have bad news for you – you topped the “most wanted” list for attackers. 

Mobile malware and madware invades consumers’ privacy
While many people download new apps to their mobile devices without a second thought, many malicious apps contain highly annoying or unwanted capabilities. Of the new malware threats written in 2013, 33 percent tracked users and 20 percent collected data from infected devices. 2013 also saw the first remote access toolkits (or RATs) begin to appear for Android devices. When running on a device, these RATs can monitor and make phone calls, read and send SMS messages, get the device’s GPS coordinates, activate and use the camera and microphone and access files stored on the device – all without the knowledge or consent of the victim.

Ransomware growth explodes and turns even more vicious 
As we had previously predicted, ransomware, the malicious software that locks computers and files, grew rapidly in 2013. Ransomware saw an explosive 500 percent growth over last year and remained a highly profitable enterprise for the bad guys, netting $100 to $500 USD for each successful ransom payment. We also saw attackers become more vicious by holding data hostage through high-end encryption and threatening to delete the information forever if the fee was not paid within the given time limit.

The future of identity theft: The Internet of Things
Which of these things have been hacked in the past year: a refrigerator or a baby monitor? When I ask customers this question, they often reply, “Both.” The correct answer is the baby monitor. Despite what you may have heard on the news, Internet connected refrigerators have yet to be attacked. But never say never. Security researchers in 2013 demonstrated that attacks against cars, security cameras, televisions and medical equipment are all possible. The refrigerator’s time will come. The Internet of Things (IoT) is on its way and related threats are sure to follow. In this year’s report, we talk about what we’ve seen so far, and the consensus is that the Internet connected device at most risk of attack today is the home router.

What comes next? With personal details and financial information being stored on IoT devices, it’s only a matter of time before we find a true case of a refrigerator being hacked. Right now, security is an afterthought for most manufacturers and users of these devices, and it will likely take a major security incident before it is seriously considered. However, by starting the conversation now about the potential security risks, we will be that much more prepared when that day comes. This year’s ISTR starts the conversation. 

For more details, check out the complete Internet Security Threat Report, Vol. 19.

2953095 – Vulnerability in Microsoft Word Could Allow Remote Code Execution – Version: 2.0

Revision Note: V2.0 (April 8, 2014): Advisory updated to reflect publication of security bulletin.Summary: Microsoft has completed the investigation into a public report of this vulnerability. We have issued MS14-017 to address this issue. For more inf…

Microsoft Security Advisory (2755801): Update for Vulnerabilities in Adobe Flash Player in Internet Explorer (2755801) – Version: 22.0

Severity Rating: Revision Note: V22.0 (April 8, 2014): Added the 2942844 update to the Current Update section.Summary: Microsoft is announcing the availability of an update for Adobe Flash Player in Internet Explorer on all supported editions of Window…

Microsoft Security Advisory (2953095): Vulnerability in Microsoft Word Could Allow Remote Code Execution (2953095) – Version: 2.0

Severity Rating: Revision Note: V2.0 (April 8, 2014): Advisory updated to reflect publication of security bulletin.Summary: Microsoft has completed the investigation into a public report of this vulnerability. We have issued MS14-017 to address this is…

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寄稿: Parag Sawant

フィッシング詐欺師は、ユーザーの重要な情報を手に入れるチャンスを増やすために、さまざまな計略を繰り出し続けています。シマンテックが最近確認したフィッシング攻撃の場合は、男性と女性のどちらが偉いかと質問する偽の投票サイトを通じてデータが集められていました。

フィッシングページは無料の Web ホスティングサイトを利用しており、Facebook ユーザーを標的にした偽の投票ページには、「WHO IS GREAT BOYS OR GIRLS?(男性と女性、どちらが偉い?)」という質問と[VOTE(投票)]ボタンがあります。ページには、投票結果を示す棒グラフも埋め込まれており、過去 4 年間の総得票数が示されます。このようなグラフがあることで、より本物らしく見えます。

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図 1. 投票サイトへの登録を求める Facebook アプリケーション

最初のフィッシングページには、投票プロセスを開始するボタンがあります。このボタンをクリックすると、次の図のようにポップアップウィンドウが開き、ユーザーのログイン ID とパスワードを入力するよう求められます。

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図 2. ユーザーのアカウント情報の入力を求めるポップアップウィンドウ

ポップアップウィンドウには、男性か女性のどちらかに投票するためのボタンと、投票を送信するボタンも表示されます。フィールドに必要な情報をすべて入力し終わると、投票した情報を確認するための確認ページに進みます。

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図 3. ユーザー情報を入力し終わると、投票の確認メッセージが表示される

ここで最初のページに戻ろうとして、投票数が定期的に増えていることに気付きました。先ほど 4,924,055 だった数値が、今見ると 4,924,096 になっているのです。

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図 4. 変化する前と変化した後の投票数の比較

今回のフィッシング詐欺師は以下の URL を使っており、そのサブドメインからこれがアプリケーションであることがわかります。
[http://]smartapps.[削除済み].com

このサイトに騙されたユーザーは、個人情報を盗まれ、なりすまし犯罪に使われてしまいます。

偽アプリケーションを餌に使う手口は珍しいものではありません。インターネットを利用する際には、フィッシング攻撃を防ぐためにできる限りの対策を講じることを推奨します。

  • アカウントにログインするときに、アドレスバーの URL を確かめ、間違いなく目的の Web サイトのアドレスであることを確認する。
  • 電子メールメッセージの中の疑わしいリンクはクリックしない。
  • 電子メールに返信するときに個人情報を記述しない。
  • ポップアップページやポップアップウィンドウに個人情報を入力しない。
  • 個人情報や口座情報を入力する際には、鍵マーク(画像やアイコン)、「https」の文字、緑色のアドレスバーなどが使われていることを確かめ、その Web サイトが SSL で暗号化されていることを確認する。
  • ノートン インターネットセキュリティやノートン 360 など、フィッシング詐欺やソーシャルネットワーク詐欺から保護する統合セキュリティソフトウェアを使う。
  • 電子メールで送られてきたリンクや、ソーシャルネットワークに掲載されているリンクがどんなに魅力的でも不用意にクリックしない。

 

* 日本語版セキュリティレスポンスブログの RSS フィードを購読するには、http://www.symantec.com/connect/ja/item-feeds/blog/2261/feed/all/ja にアクセスしてください。

The Dark Power of Windows PowerShell

Windows PowerShell, the Microsoft scripting language, has made the headlines recently due to malware authors leveraging it for malicious purposes. Symantec has identified more PowerShell scripts being used for nefarious purposes in attacks. Unlike other PowerShell scripts that we have identified previously, the new script, which Symantec detects as Backdoor.Trojan, has different layers of obfuscation and is able to inject malicious code into “rundll32.exe” so that it can hide itself in the computer while still running and acting like a back door.

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Figure 1. The original Microsoft Windows PowerShell script

As seen from the previous image, the script is obfuscated to prevent users from seeing the clear text. However, the attacker has used the parameter “-EncodedCommand” in order to encode the entire script in base64. Once decoded, the script is still obfuscated and it looks like the following:

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Figure 2. PowerShell script’s first layer of decryption

After this, the script will again decode a portion of itself from base64 to plain text and the decoded part of the script is passed through a decompression function. The decompressed data is the latest stage of the deobfuscated PowerShell script, which will be executed through the “Invoke-Expression” command.

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Figure 3. A deobfuscated PowerShell script

The attacker uses the command “CompileAssemblyFromSource” so that they can compile and execute on-the-fly embedded code which hides itself on the computer. The compiled code will then try to execute “rundll32.exe” in a suspended state, inject malicious code into the newly created process and restart the “rundll32” thread. This method is used to prevent detection on the computer.

The injected code will then try to connect to a remote computer and it then waits to receive a buffer of instructions. The code will subsequently store these instructions with EXECUTE_READWRITE permissions, so that they can be executed in a stealthy way.

The following picture shows how the injected code allocates the memory and receives the instructions that are later executed.

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Figure 4. Malicious code injected into rundll32.exe

Symantec customers are currently protected from this attack with the detection Backdoor.Trojan. To avoid being infected, we recommend that customers should use the latest Symantec technologies and update their virus definitions. Users should avoid running unknown PowerShell scripts and should not lower PowerShell’s  default execution settings in order to prevent potential malicious scripts from executing.

The Dark Power of Windows PowerShell

Windows PowerShell, the Microsoft scripting language, has made the headlines recently due to malware authors leveraging it for malicious purposes. Symantec has identified more PowerShell scripts being used for nefarious purposes in attacks. Unlike other PowerShell scripts that we have identified previously, the new script, which Symantec detects as Backdoor.Trojan, has different layers of obfuscation and is able to inject malicious code into “rundll32.exe” so that it can hide itself in the computer while still running and acting like a back door.

Powershell 1.png

Figure 1. The original Microsoft Windows PowerShell script

As seen from the previous image, the script is obfuscated to prevent users from seeing the clear text. However, the attacker has used the parameter “-EncodedCommand” in order to encode the entire script in base64. Once decoded, the script is still obfuscated and it looks like the following:

Powershell 2.png

Figure 2. PowerShell script’s first layer of decryption

After this, the script will again decode a portion of itself from base64 to plain text and the decoded part of the script is passed through a decompression function. The decompressed data is the latest stage of the deobfuscated PowerShell script, which will be executed through the “Invoke-Expression” command.

Powershell 3.png

Figure 3. A deobfuscated PowerShell script

The attacker uses the command “CompileAssemblyFromSource” so that they can compile and execute on-the-fly embedded code which hides itself on the computer. The compiled code will then try to execute “rundll32.exe” in a suspended state, inject malicious code into the newly created process and restart the “rundll32” thread. This method is used to prevent detection on the computer.

The injected code will then try to connect to a remote computer and it then waits to receive a buffer of instructions. The code will subsequently store these instructions with EXECUTE_READWRITE permissions, so that they can be executed in a stealthy way.

The following picture shows how the injected code allocates the memory and receives the instructions that are later executed.

Powershell 4.png

Figure 4. Malicious code injected into rundll32.exe

Symantec customers are currently protected from this attack with the detection Backdoor.Trojan. To avoid being infected, we recommend that customers should use the latest Symantec technologies and update their virus definitions. Users should avoid running unknown PowerShell scripts and should not lower PowerShell’s  default execution settings in order to prevent potential malicious scripts from executing.

[2014] April Fools’ Day joke in AVAST – prank for COO and CTO

We prepared a special office equipment for our COO and CTO this year on 1st April. They didn’t expect that we were able to prepare better prank than last year. This year the prank consisted of several stages office moved to a new location office filled up with balloons hints of new office location hidden […]

[2014] April Fools’ Day joke in AVAST – prank for COO and CTO

We prepared a special office equipment for our COO and CTO this year on 1st April. They didn’t expect that we were able to prepare better prank than last year. This year the prank consisted of several stages office moved to a new location office filled up with balloons hints of new office location hidden […]