1.背景
2.模拟环境
2.1 钓鱼页面获取账号密码
2.2 捆绑木马获取账号密码
2.2.1 木马上线
2.2.2 chrome浏览器密码读取
2.2.3 360浏览器密码读取
2.3 文件加密
2.4 勒索信
Please Read Me !!!!!!!!!.txt
Hello.
This is DiskStation Security.
What happened?
- Your Network was not secure.
- Your Network-Attached Storage was compromised.
What does this mean? Where are my files?
- All your data has been encrypted and moved to a special volume.
- All your important documents have been downloaded.
What can I do to recover my data?
- If you want to recover your data, you have to send 0.03 Bitcoin to this wallet address:
1BuHerPe5fR4RLcvvRpBWq4MtNu7cwTSyB
Always double check the address when copy/pasting it !!!!!
- You have until the 5th of April 2024 to send the payment.
After this date the decryption will be almost impossible.
What should I do after sending the payment?
- Your ID is:
- Please email us your ID and payment confirmation(txid) to:
[email protected]
[email protected]
[email protected]
- After we confirm your payment you will receive the password so you can decrypt all your data.
!!! Your ADMIN account was restricted for security reasons.
You can contact us to restore it !!!
Can I still use my nas?
- Do not delete any files you find on your nas.
- Do not try to recover your data using any software as it will not work.
- Do not modify any volumes or storage pools on your nas.
- Do not write large amounts of data to your disk.
- Do not restart or power on/off your synology multiple times. It will result in archive corruption!
Why have my files been downloaded?
- We reserve the right to leak or sell all your important documents, if you don't contact us. Your GDPR regulators and Customers will also be notified about the breach.
This will imply heavy fines.
Where can I buy and send bitcoin?
- You can easily buy and send bitcoin from:
https://paxful.com/buy-bitcoin
https://paybis.com/
https://www.moonpay.com/buy/btc
https://noones.com/
https://www.bybit.com/en-us/learn/crypto/buy-bitcoin/
https://www.binance.com/en/buy-Bitcoin
https://localcoinswap.com/buy/bitcoin
or Search for Bitcoin ATM's in your area.
You can think of this as a failed security audit.
We are professionals. This is a one time deal. We will decrypt a few files from your nas, as proof, if you need it.
We will send you the password immediately after the payment.
All Files, folders and subfolders will be unchanged.
We will even send you tips on how to strengthen your network security, to prevent any future attacks.
Thank you.
3.溯源分析
3.1 受灾情况统计
被加密服务器数量 | 1台 |
---|---|
被加密文件总数 | 1839044个 |
被加密数据大小 | 15.14TB |
后门账号 | 1个 |
数据恢复时长 | 1天 |
数据恢复率 | 99% |
3.2 加密时间
3.3 日志查看
-
2024/3/31 03:00:36删除共享文件夹:
-
2024/3/31 03:02:52搜索并清除了所有存档的日志:
-
2024/3/31 03:09:32清除系统日志后重启系统:
3.4 详细攻击路径
【推测攻击流程一】
【推测攻击流程二】
4.解密恢复
解密前
解密后
5.后门排查
6.安全建议
6.1 风险消减措施
资产梳理排查目标:根据实际情况,对内外网资产进行分时期排查
服务方式:调研访谈、现场勘查、工具扫描
服务关键内容:流量威胁监测系统排查、互联网暴露面扫描服务、技术加固服务、集权系统排查
6.2 安全设备调优
目标
主要目标设备
6.3 全员安全意识增强调优
目标:
形式:
线下培训课表
1.提供相关的安全意识培训材料,由上而下分发学习
2.组织相关人员线上开会学习。线上培训模式。
线上学习平台
7.团队介绍
More
8.我们的数据恢复服务流程
① 免费咨询/数据诊断分析
专业的售前技术顾问服务,免费在线咨询,可第一时间获取数据中毒后的正确处理措施,防范勒索病毒在内网进一步扩散或二次执行,避免错误操作导致数据无法恢复。
售前技术顾问沟通了解客户的机器中毒相关信息,结合团队数据恢复案例库的相同案例进行分析评估,初步诊断分析中毒数据的加密/损坏情况。
② 评估报价/数据恢复方案
您获取售前顾问的初步诊断评估信息后,若同意进行进一步深入的数据恢复诊断,我们将立即安排专业病毒分析工程师及数据恢复工程师进行病毒逆向分析及数据恢复检测分析。
专业数据恢复工程师根据数据检测分析结果,定制数据恢复方案(恢复价格/恢复率/恢复工期),并为您解答数据恢复方案的相关疑问。
③ 确认下单/签订合同
您清楚了解数据恢复方案后,您可自主选择以下下单方式:
双方签署对公合同:根据中毒数据分析情况,量身定制输出数据恢复合同,合同内明确客户的数据恢复内容、数据恢复率、恢复工期及双方权责条款,双方合同签订,正式进入数据恢复专业施工阶段,数据恢复后进行验证确认,数据验证无误,交易完成。
④ 开始数据恢复专业施工
安排专业数据恢复工程师团队全程服务,告知客户数据恢复过程注意事项及相关方案措施,并可根据客户需求及数据情况,可选择上门恢复/远程恢复。
数据恢复过程中,团队随时向您报告数据恢复每一个节点工作进展(数据扫描 → 数据检测 → 数据确认 → 恢复工具定制 → 执行数据恢复 → 数据完整性确认)。
⑤ 数据验收/安全防御方案
完成数据恢复后,我司将安排数据分析工程师进行二次检查确认数据恢复完整性,充分保障客户的数据恢复权益,二次检测确认后,通知客户进行数据验证。
客户对数据进行数据验证完成后,我司将指导后续相关注意事项及安全防范措施,并可提供专业的企业安全防范建设方案及安全顾问服务,抵御勒索病毒再次入侵。
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原文始发于微信公众号(solar专业应急响应团队):【紧急警示】揭秘全新勒索手段:针对NAS被黑客入侵的背后故事