PUA.Win32.YouXuN.AL

This Potentially Unwanted Application arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Arrival Details

This Potentially Unwanted Application arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.

Installation

This Potentially Unwanted Application creates the following folders:

• %Application Data%\youxunbox
• %Application Data%\youxunbox\xe6\x96\xb0\xe5\xbb\xba\xe6\x96\x87\xe4\xbb\xb6\xe5\xa4\xb9\xe6\x96\xb0\xe5\xbb\xba\xe6\x96\x87\xe4\xbb\xb6\xe5\xa4\xb9
• %Application Data%\youxunbox\xe6\x96\xb0\xe5\xbb\xba\xe6\x96\x87\xe4\xbb\xb6\xe5\xa4\xb9

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other System Modifications

This Potentially Unwanted Application adds the following registry entries:

HKEY_CURRENT_USER\Software\Youxun\
stat
year = "2019"

HKEY_CURRENT_USER\Software\Youxun\
stat
month = "11"

HKEY_CURRENT_USER\Software\Youxun\
stat
day = "2"

Dropping Routine

This Potentially Unwanted Application drops the following files:

• %Application Data%\youxunbox\biantaisifu.ico
• %Application Data%\youxunbox\atb.ico
• %Application Data%\youxunbox\aitb.ico
• %Application Data%\youxunbox\zqcq.ico
• %Application Data%\youxunbox\jhs.ico
• %Application Data%\youxunbox\xe6\x96\xb0\xe5\xbb\xba\xe6\x96\x87\xe4\xbb\xb6\xe5\xa4\xb9\down.zip
• %Application Data%\youxunbox\lsqy_tb.ico
• %Application Data%\youxunbox\caipiao.ico
• %Application Data%\youxunbox\baidu.ico
• %Application Data%\youxunbox\xe6\x96\xb0\xe5\xbb\xba\xe6\x96\x87\xe4\xbb\xb6\xe5\xa4\xb9\down1.7z
• %Application Data%\youxunbox\shipin.ico
• %AppDataLocal%\GDIPFONTCACHEV1.DAT
• %User Temp%\20191102165339.dmp
• %Application Data%\youxunbox\tmall.ico
• %Application Data%\youxunbox\toutiao.ico
• %Application Data%\youxunbox\cjsf.ico
• %Application Data%\youxunbox\cqsf.ico
• %Application Data%\youxunbox\xe6\x96\xb0\xe5\xbb\xba\xe6\x96\x87\xe4\xbb\xb6\xe5\xa4\xb9\xe6\x96\xb0\xe5\xbb\xba\xe6\x96\x87\xe4\xbb\xb6\xe5\xa4\xb9\down.7z
• %Application Data%\youxunbox\temai.ico
• %Application Data%\youxunbox\xe6\x96\xb0\xe5\xbb\xba\xe6\x96\x87\xe4\xbb\xb6\xe5\xa4\xb9\down.7z
• %Application Data%\youxunbox\xe6\x96\xb0\xe5\xbb\xba\xe6\x96\x87\xe4\xbb\xb6\xe5\xa4\xb9\2.7z
• %Application Data%\youxunbox\wangzdh.ico
• %Application Data%\youxunbox\main.7z
• %Application Data%\youxunbox\tmmarket.ico

(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Roaming on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)

Other Details

This Potentially Unwanted Application connects to the following possibly malicious URL:

• http://api.{BLOCKED}t.jshhdian.com/cgi/PCSoftInfo.ashx/{BLOCKED}t/getentity?id=
• http://ggstats.{BLOCKED}b.jshhdian.com/http://ggstats.{BLOCKED}b.jshhdian.com/pinforesults.do?{random characters}

This report is generated via an automated analysis system.