勒索軟體駭客Black Basta利用Windows零時差漏洞提升權限
支付動態 · 2024-06-14

研究人員著手調查一起勒索軟體攻擊事故發現,勒索軟體駭客組織Black Basta在微軟提供漏洞修補之前的3個月,就利用他們掌握到的資安弱點打造攻擊工具

今年3月微軟修補Windows錯誤回報服務的漏洞CVE-2024-26169(CVSS風險評分為7.8),一旦攻擊者利用這項漏洞,就有機會提升權限。但最近研究人員指出,有人在微軟修補之前將其用於攻擊行動。

資安業者賽門鐵克調查一起勒索軟體Black Basta攻擊事故,駭客組織Cardinal(Storm-1811、UNC4394)成功在受害電腦植入惡意程式DarkGate的載入工具之後,接著就部署CVE-2024-26169的漏洞利用工具,濫用系統檔案werkernel.sys並產生登錄檔,並將Debugger的數值設定為特定的路徑名稱,從而以管理員權限啟動Shell的系統權限。但稍微值得慶幸的是,這些駭客最終並未成功部署勒索軟體。

值得留意的是,研究人員找到的兩個惡意程式檔案,皆在微軟推出修補之前出現,其中一個是在今年2月27日製作,另一個則是在去年12月18日產生。這樣的情況,代表駭客至少在3個月前,就將其當作零時差漏洞用於攻擊行動。

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