
回顾2017年的网络安全态势,我们可以看到,这是数据泄露和勒索软件“狂欢”的一年。在这一年中,在全世界发生了数起吸引全球目光的数据泄露和勒索软件攻击事件。比如,“五角大楼AWS S3配置错误,意外暴露18亿公民信息”、“Uber大规模数据泄露”、“雅虎30亿帐号泄露,政监机构参与调查”、“美国信用机构Equifax遭入侵,近半用户信息泄露”等大规模数据泄露事件。另外,还有包括席卷全球的勒索软件WannaCry、Petya以及NotPetya。 但从今年初以来,我们能够注意到,这种网络威胁已经发生了快速的转变。与加密货币相关的恶意软件正在成为网络犯罪分子盈利的首选。 
近几周来,一些网络安全公司都先后发布了关于利用“永恒之蓝(EternalBlue)”漏洞进行传播的加密货币挖矿恶意软件的研究分析报告。 EternalBlue(CVE-2017-0144)原本来自美国国家安全局(NSA),在去年4份被黑客组织 “ Shadow Brokers ”(影子经纪人)公开披露,并在WannaCry、Petya、NotPetya以及其他一些恶意软件的传播中被利用。 网络安全公司Proofpoint的研究人员发现,一个名为“Smominru”或者“Ismo”的大型僵尸网络正在利用EternalBlue感染运行Windows系统的计算机,以部署一个针对门罗币(Monero)进行挖掘的加密货币挖矿恶意软件。 根据研究人员的说法,Smominru僵尸网络至少从2017年5月开始运行,已经感染了超过52.6台计算机,其中大部分被认为是未打补丁的Windows服务器。 经过研究人员的确认,Smominru的运营团队开采的速率达到约每天24个门罗币(约价值8500美元)。到目前为止,他们已经开采了约8900个门罗币(本周估价在280万至360万美元之间)。 
研究人员还指出,受感染的计算机或者服务器分布在世界各地,其中俄罗斯、印度和中国台湾的感染率最高。 
在深入研究之后,Proofpoint的研究人员还发现,网络犯罪分子至少使用了25台设备来扫描整个互联网,以找出那些存在漏洞的且Windows系统的设备。它们大部分都利用了EternalBlue来发起攻击,并通过感染新的节点来扩充僵尸网络的大小。 来自其他网络安全公司的研究人员也报告了通过SQL Server进行的攻击,Proofpoint的研究人员相信网络犯罪分子利用了同样由NSA泄露的 RDP协议漏洞“EsteemAudit”(CVE-2017-0176)进行恶意软件的传播。 除此之外,另一家网络安全公司CrowdStrike最近也发表了一篇分析报告,指出了另一种普遍存在的无文件加密货币挖矿恶意软件。它被称为“WannaMine”,同样利用EternalBlue来感染计算机,并开展门罗币挖矿活动。 Proofpoint的研究人员总结说:“网络犯罪分子多年来一直在暗网市场中使用加密货币,由于比特币在专用矿场以外的开采会非常耗费资源,因此他们对于门罗币的兴趣在急剧增加。利用此类分布式僵尸网络来进行挖矿活动,对于僵尸网络的运营团队而言是非常有利可图的。” “鉴于僵尸网络运营团队可以获得可观的利润,再加上僵尸网络及其基础设施的复原能力,我们预计类似这样的挖矿活动将会持续下去,而必然会有更多的计算机或者服务器用户成为其受害者。” Proofpoint补充说。 本文由 黑客视界 综合网络整理,图片源自网络;转载请注明“转自黑客视界”,并附上链接。 ,
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abstract: 回顾2017年的网络安全态势,我们可以看到,这是数据泄露和勒索软件“狂欢”的一年。在这一年中,在全世界发生了数起吸引全球目光的数据泄露和勒索软件攻击事件。 |