PUA.Win32.InstallCore.MANHOCCX

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 drops the following files:

• %User Temp%\is-{random2}.tmp\botva2.dll → deleted afterwards
• %User Temp%\is-{random2}.tmp\zbShieldUtils.dll → deleted afterwards
• %User Temp%\is-{random2}.tmp\loader.gif → deleted afterwards
• %User Temp%\is-{random1}.tmp\{Malware File Name}.tmp → deletes afterwards

(Note: %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).)

It adds the following processes:

• "%User Temp%\is-{random1}.tmp\{Malware File Name}.tmp" /SL5="${random},1565926,784896,{Malware Path and Name}.exe"

(Note: %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).)

It creates the following folders:

• %User Temp%\is-{random1}.tmp → deleted afterwards
• %User Temp%\is-{random2}.tmp → deleted afterwards
• %User Temp%\is-{random2}.tmp\_isetup → deleted afterwards

(Note: %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 System Modifications

This Potentially Unwanted Application adds the following registry entries:

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
Owner = {Hex Values} → deleted afterwards

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
SessionHash = {Hex Values} → deleted afterwards

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000
Sequence = 1 → deleted afterwards

Other Details

This Potentially Unwanted Application adds the following registry keys:

HKEY_CURRENT_USER\Software\Microsoft\
RestartManager\Session0000 → deleted afterwards

It connects to the following possibly malicious URL:

• d1xyzdsnvp2oud.{BLOCKED}ront.net
• x.{BLOCKED}.us
• ctldl.{BLOCKED}supdate.com