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[虚拟币交流]
黑客利用虚假验证码传播 Lumma 窃取恶意软件(转)
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不良行为者正在使用虚假的 Captcha 提示来分发无文件 Lumma Stealer 恶意软件网络安全公司 DNSFilter 的研究.5 \9 f1 U! _/ y- c& n
/ s' s1 i2 i& n7 c: l9 n, ?: i# Z该提示首先在希腊银行网站上检测到,要求 Windows 用户将其复制并粘贴到“运行”对话框中,然后按 Enter 键。
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E/ ]# b& ] Y! e: Y) J2 ^; fDNSFilter 报告称,该公司的客户在三天内与虚假的验证码进行了 23 次交互,其中 17% 遇到提示的人完成了屏幕上的步骤,导致试图传播恶意软件。& Q( I `" i a& ^ b6 j
2 h7 E, d- e. O1 _# TLumma Stealer 是什么? _( Q2 C [2 x6 e$ B
DNSFilter 的全球合作伙伴布道者 Mikey Pruitt 解释说,Lumma Stealer 是一种恶意软件,它会在受感染的设备中搜索凭证和其他敏感数据。
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* O5 ^2 o* N# P, k他告诉记者:“Lumma Stealer 会立即扫描系统中所有可以盈利的东西,包括浏览器存储的密码和 Cookie、保存的 2FA 令牌、加密货币钱包数据、远程访问凭证,甚至密码管理器库。”解密.
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普鲁特澄清说,不法分子利用窃取的数据进行各种目的,通常都是为了获取金钱利益,例如身份盗窃、访问“用于金融盗窃或欺诈交易的在线账户”,以及获取加密货币钱包.
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# g1 Q5 h, r; ]% P4 }* }$ }- p据普鲁特称,Lumma Stealer 的影响力非常广泛,可以在各种各样的网站上找到。! ~5 F/ G z2 j8 V- i# M, w1 k: Y
$ i( D6 p0 K4 G6 x' C他解释说:“虽然我们无法估算通过这一途径可能造成的损失,但这种威胁可能存在于非恶意网站上。这使得在出现可疑情况时保持警惕变得极其危险,也至关重要。”1 z7 G9 [0 W1 [2 R# E& a
* e$ L# K4 y; I( P/ a2 l恶意软件即服务5 V% A- D5 C. U; ?
Lumma Stealer 不仅是恶意软件,而且是恶意软件即服务 (MaaS) 的一个例子,它安全公司已报告是近年来恶意软件攻击增多的罪魁祸首。" c4 V, {& R" F4 |* g, b0 c
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据 ESET 恶意软件分析师 Jakub Tomanek 称,Lumma Stealer 背后的运营者开发了其功能,完善了其逃避恶意软件检测的能力,同时还注册了域名来托管该恶意软件。
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2 ], r( o% }7 D他告诉解密“他们的主要目标是保持服务运营和盈利,从关联公司收取每月的订阅费——有效地将 Lumma Stealer 作为一项可持续的网络犯罪业务来运营。”
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2 R* Q* ?: J7 E9 E% R4 E2 x由于网络犯罪分子无需开发恶意软件和任何底层基础设施,因此 Lumma Stealer 等 MaaS 一直很受欢迎。, @' z" t: C3 ^) W
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5 月,美国司法部查封了五个互联网域名不法分子利用这些域名来操作 Lumma Stealer 恶意软件,而微软则私下关闭了 2,300 个类似的域名。
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: e: w: j3 | O; J/ { b然而,有报道称,Lumma Stealer 自 5 月以来再次出现,并趋势科技七月分析数据显示,6月至7月期间“被攻击账户数量稳步恢复到正常水平”。3 _4 s$ U9 e/ T
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恶意软件的全球影响力
- M4 I( R- P$ ~2 e2 c: [; }Lumma Stealer 的吸引力之一在于其订阅费用(通常为月费)相对于潜在收益而言较为便宜。' l9 a( Z$ _+ Z* T \, v& S
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Darktrace 安全与人工智能战略副总裁 Nathaniel Jones 表示:“这种复杂的信息窃取程序在暗网论坛上的售价仅为 250 美元,它专门针对网络犯罪分子最关心的内容——加密货币钱包、浏览器存储的凭据和双因素身份验证系统。”# z- Q! M1 B# ~0 ^0 @2 Q
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琼斯告诉解密Lumma Stealer 漏洞的规模“令人震惊”,2023 年估计损失达 3650 万美元,两个月内有 40 万台 Windows 设备受到感染。
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! l) y0 p# B6 G( O' Z0 L& G" G“但真正令人担忧的不仅仅是数字,而是多层级的盈利策略,”他说。“Lumma 不仅窃取数据,还会系统地收集浏览器历史记录、系统信息,甚至 AnyDesk 配置文件,然后将所有数据泄露给俄罗斯控制的指挥中心。”
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" {) z4 w& m- F- X% [/ B加剧 Lumma Stealer 威胁的事实是,被盗数据通常会直接输入到专门窃取和转售凭证的“贩卖团队”。 K7 ?& |# v9 ~ q9 E
9 | b1 J( D; S$ d4 t$ g琼斯补充道:“这会造成毁灭性的连锁反应,一次感染就可能导致银行账户劫持、加密货币盗窃和身份欺诈,而且这种现象在最初的入侵之后还会持续很长时间。”; u9 D; ?; T% k, ~8 k
* \% [5 W5 z4 F+ ^( e7 j虽然 Darktrace 暗示 Lumma 相关漏洞的起源或中心是俄罗斯,但 DNSFilter 指出,利用该恶意软件服务的不法分子可能在多个地区开展活动。$ s: R2 I2 z6 l% p/ Y2 V
* d: Z, `% f+ _5 J) {! {- a普鲁特表示:“此类恶意活动通常会涉及来自多个国家的个人或团体”,并补充说,“使用国际托管服务提供商和恶意软件分发平台”的情况尤其普遍。
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