1、概述
案例来自同事的HVV现场,感觉邮件里面有些有意思的点,分享一下。
点击里面的“点此登录完成本次迁移”以后就会跳转到下面的链接:https://admin-1312705177.cos-website.ap-nanjing.myqcloud.com/
2、分析
2.1、发件人分析
发件人非常多,统计了一下如下所示:
这么多感觉是伪造发件人实现的,
嵊州三鼎涂料科技有限公司 |
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昆山市大数据资源管理中心 |
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雾联智能技术(上海)有限公司 |
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北京亚联美讯科技发展有限公司 |
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北京艾唯博瑞科技有限公司 |
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四川上力商业管理集团有限公司 |
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中庆投资控股(集团)有限责任公司 |
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上海交通大学 |
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杭州市人民政府办公厅 |
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湖南三湘银行股份有限公司 |
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北京食安观察科技有限公司 |
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广州市唯衣网络科技有限公司 |
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深圳习习网络科技有限公司 |
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中南财经政法大学 |
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2.2、邮件分析
2.2.1、发件人
里面比较有意思的点在于,发件人为"[email protected](昆山大数据资源中心)",并且其IP为222.92.84.166,确实为mail.ks.gov.cn这个政府的邮件IP,突然有一种邮件服务器被日了的感觉。
Received: from mail.ks.gov.cn ([222.92.84.166])
by spam02.xxx.com with ESMTP id 27JLSInE085978
for <[email protected]>; Sat, 20 Aug 2022 05:28:18 +0800 (+08)
(envelope-from [email protected])
X-MAILFROM: <[email protected]>
X-RCPTTO: <[email protected]>
X-FROMIP: 182.118.233.54
X-Spammark-Scaned: 1
X-EQAUTHUSER: ksswwxb
X-Received: hn.kd.ny.adsl,182.118.233.54,20220820042010
Received: from hn.kd.ny.adsl (HELO ehucctv.com) ([email protected])
by localhost with SMTP; 19 Aug 2022 20:20:10 -0000
X-Priority: 1
X-Mailer: FRTtKwEVi 12
Disposition-Notification-To: [email protected]
From: "=?utf-8?Q?Administrator?=" <[email protected]>
To: "=?utf-8?Q?zhu?=" <[email protected]>
Subject: =?utf-8?Q?=E9=80=9A=E7=9F=A5=E5=90=84=E9=83=A8=E9=97=A8?=
Message-ID: <[email protected]>
Date: Sat, 20 Aug 2022 05:01:36 +0800
Content-Type: text/html;
charset="utf-8"
Content-Transfer-Encoding: quoted-printable
X-HQIP: 127.0.0.1
X-ASRC_FPT_MALICIOUS: MALICIOUS FPT 692b8f4c1727288f895097008916493b419296ce2605616a66709271c12d2e59 (106)
Received-SPF: none (spam02.xxx.com: domain of [email protected] does not designate permitted sender hosts)
X-DNSRBL:
X-MAIL: spam02.xxx.com 27JLSInE085978
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2.2.2、X-FROMIP
邮件里面可以看到有X-FROMIP这个字段,这个字段表示其发件人的真实IP
这样再结合前面的信息就可以推演出其攻击方式了:
from mail.ks.gov.cn ([222.92.84.166])
X-MAILFROM: <ksswwxb@ks.gov.cn>
X-FROMIP: 182.118.233.54
2.2.3、我们使用AI来分析一下
2.3、伪造发件人
效果如下:
根据测试发现里面大部分是可以伪造发件人的,这样的话感觉攻击者没必要利用钓鱼获得的账号密码来钓鱼了,但是这种方式也存在几个问题:可能会被邮件网关类安全设备拦截,可以获得攻击者的相关身份
3、溯源
这个字段表示发送后邮件以后推送一个回执,如下所示:
根据上面的信息可以获取到攻击者的下面信息:
X-FROMIP: 182.118.233.54
X-Received: hn.kd.ny.adsl,182.118.233.54,20220820042010
Disposition-Notification-To: [email protected]
可得
owner:王*洋
qq邮箱:[email protected]
手机号:19939073761
QQID:何时才能暴富
微信ID:毛豆
支付宝ID:向阳
所属性质:涉及范围巨大的黑灰产钓鱼
原文始发于微信公众号(Ice ThirdSpace):应急响应案例30-钓鱼应急与溯源
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