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攻击者们转而采用名为Taylor的恶意软件,其负责充当键盘记录器外加后门。 [复制链接]

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发表于 2018-04-13 19:02 |显示全部楼层
神秘中国黑客组织相关分析
目前,MSSQL与MySQL服务器的拥有者们应确保其数据库帐户使用可靠密码,配备可阻止暴力攻击的防火墙,同时还应检查其系统是否存在以下数据库管理员帐户——攻击者会利用这些帐户在受感染的系统上创建后门。
今年早些时候,GuardiCore方面还发现了BondNet,这是一套由超过15000台Windows Server设备构成的僵尸网络,专门用于加密货币采矿。研究人员们认为BondNet同样源自中国。
GuardiCore公司昨天发布报告称,该公司研究人员在经过数月的追踪之后发现,这个神秘的黑客组织的恶意行为主要分为三个活动,且每个活动都对应一种新的恶意软件。
恶意软件Hex、Taylor、Hanako:
  • 第一波攻击指向运行有MSSQL数据库的Windows服务器,攻击者在这里部署一款名为Hex的恶意软件——其在本质上属于远程访问木马(简称RAT)与加密货币采矿木马。
  • 第二波攻击则指向运行在Windows服务器上的MSSQL数据库,这一次攻击者们转而采用名为Taylor的恶意软件,其负责充当键盘记录器外加后门。
  • 第三波攻击更为多样化,旨在扫描Windows与Linux服务器上运行的MYSQL与MySQL数据库。在此类攻击中,黑客们安装了一款名为Hanako的恶意软件,这是一款专门用于发动DDoS攻击的木马程序。

黑客们非常小心地将扫描行为限制在少量IP地址范围之内,这样受感染主机就会扫描大量其它服务器; 此外,他们还利用受感染主机执行扫描操作,从而避免中央命令与控制(C&C)基础设施被其安全保护方所发现。
该组织还在恶意软件之间任意切换,时而结合使用,这意味着每次攻击会产生约300个独特的恶意软件二进制文件。此外,他们还不断轮换C&C服务器与域名,这种作法在国家支持型黑客活动中较为常见。
攻击者追击云基础设施
根据GuardiCore方面的介绍,神秘黑客组织对微软Azure以及亚马逊AWS公有IP范围进行扫描,希望借此发现采用低强度凭证且负责存储敏感信息的企业云服务器。
黑客们集中精力确保自身回避先进安全产品的扫描的同时,其攻击活动仍影响到数以万计的服务器。今年3月发布的Taylor恶意软件所涉及的服务器就超过8万台。Taylor的取名源自研究人员们在一台C&C服务器上所发现的美国歌手Taylor Swift的照片。在此之前,由于整个攻击流程非常隐蔽,卡巴斯基方面曾于今年2月将Taylor误认为是Mirai恶意软件的Windows变种版本。
GuardiCore公司将研究这些攻击活动的过程描述为“一种类似于密室逃脱般的,一环扣一环的追踪体验”。研究工作非常复杂,在这种情况下,逃脱挑战困扰了研究人员们近一年时间,但CuardiCore公司最终能够对攻击者的可能位置作出判断。
大部分网络攻击受害者位于中国
研究人员们指出,“代码当中经常出现中文注释,并且有充分的证据表明该黑客组织来自中国。大部分受害者也集中在中国。另外,Hex的恶意软件(RAT木马)还将自身伪装为流行的中文程序,且配置文件所列出的电子邮件地址(免费的)也源自各大中国服务商。”






















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