Ransom.Win32.LOCKBIT.YXCGD

它以文(wén)件的形式出现在系统中(zhōng)，可(kě)能(néng)是其他(tā)恶意软件投放的，或者是用(yòng)户在访问恶意网站时无意中(zhōng)下载的。

新(xīn)病毒详细信息

它以文(wén)件的形式出现在系统中(zhōng)，可(kě)能(néng)是其他(tā)恶意软件投放的，或者是用(yòng)户在访问恶意网站时无意中(zhōng)下载的。

安(ān)装(zhuāng)

它植入下列文(wén)件：

• %ProgramData%\HLJkNskOq.ico
• %ProgramData%\HLJkNskOq.bmp

它添加下列进程：

• if -safe is used:
  • bcdedit /set {current} safeboot network

它向下列进程中(zhōng)注入代码：

• svchost.exe

自启动技(jì )术

它添加下列注册表项，在系统每次启动时自行执行：

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\RunOnce
*{random} = {malware path}\{malware name}

其他(tā)系统修改

它添加下列注册表项：

HKEY_LOCAL_MACHINE\SOFTWARE\{appended ransomware extension}
hScreen = {screen height}

HKEY_LOCAL_MACHINE\SOFTWARE\{appended ransomware extension}
wScreen = {screen width}

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon
AutoAdminLogon = 1

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon
DefaultUserName = Administrator

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows NT\CurrentVersion\Winlogon
DefaultDomainName = {Computer name}

它通过修改下列注册表项，更改桌面壁纸：

HKEY_CURRENT_USER\Control Panel\Desktop
WallPaper = %ProgramData%\HLJkNskOq.bmp

HKEY_CURRENT_USER\Control Panel\Desktop
WallpaperStyle = 10

它将系统的桌面壁纸设置為(wèi)下列图像：

进程终止

它终止在受感染的系统上运行的下列服務(wù)：

• backup
• GxBlr
• GxCIMgr
• GxCVD
• GxFWD
• GxVss
• memtas
• mepocs
• msexchange
• sophos
• sql
• svc$
• veeam
• vss

它终止在受感染的系统内存中(zhōng)运行的下列进程：

• agntsvc
• dbeng50
• dbsnmp
• encsvc
• excel
• firefox
• infopath
• isqlplussvc
• msaccess
• mspub
• mydesktopqos
• mydesktopservice
• notepad
• ocautoupds
• ocomm
• ocssd
• onenote
• oracle
• outlook
• powerpnt
• sqbcoreservice
• sql
• steam
• synctime
• tbirdconfig
• thebat
• thunderbird
• visio
• winword
• wordpad
• xfssvccon

其他(tā)详细信息

它添加下列注册表键值:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
HLJkNskOq\DefaultIcon

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
HLJkNskOq

该程序执行以下操作(zuò)：

• If not executed with admin rights, it will attempt relaunch itself as admin by elevating its privileges via bypassing UAC
• It encrypts fixed, removable and network drives
• It deletes files in recycle bin folder for removable and fixed drives
• 它使用(yòng) WQL 来删除快照副本
• It terminates if the machine has the following system language:
  • Arabic (Syria)
  • Armenian (Armenia)
  • Azerbaijani (Cyrillic Azerbaijan)
  • Azerbaijani (Latin Azerbaijan)
  • Belarusian (Belarus)
  • Georgian (Georgia)
  • Kazakh (Kazakhstan)
  • Kyrgyz (Kyrgyzstan)
  • Russian (Moldova)
  • Russian (Russia)
  • Tajik (Cyrillic Tajikistan)
  • Tatar (Russia) Romanian (Moldova)
  • Turkmen (Turkmenistan)
  • Ukranian (Ukraine)
  • Uzbek (Cyrillic Uzbekistan)
  • Uzbek (Latin Uzbekistan)
• It deletes the following services:
  • wdnissvc
  • WinDefend
  • wscsvc
  • sppsvc
  • Sense
  • SecurityHealthService
• It has the capability to print the ransom note in infected machines