PUA.MSIL.AppSync.AA


 ALIASES:

BrowserModifier:Win32/DeepSync (Microsoft); HEUR:AdWare.MSIL.Syncapad.gen (Kaspersky)

 PLATFORM:

Windows

 OVERALL RISK RATING:
 REPORTED INFECTION:
 SYSTEM IMPACT RATING:
 INFORMATION EXPOSURE:

  • Threat Type: Potentially Unwanted Application

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW

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.

  TECHNICAL DETAILS

File Size:

4,135,944 bytes

File Type:

EXE

Memory Resident:

Yes

Initial Samples Received Date:

24 Oct 2019

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 copies of itself into the affected system:

  • %application data%\appsync\{malware file name}.bin

It creates the following folders:

  • %Application Data%\AppSync\chrome_BITS_3756_19263
  • %Application Data%\AppSync\Adobe_ADMLogs
  • %Application Data%\AppSync\acrocef_low
  • %Application Data%\AppSync\IXP000.TMP
  • %Application Data%\AppSync\hsperfdata_Administrator
  • %Application Data%\AppSync\ToUnzip
  • %Application Data%\AppSync\WebInstaller
  • %Application Data%\AppSync\WPDNSE
  • %Application Data%\AppSync\Deployment
  • %Application Data%\AppSync\acrord32_sbx
  • %Application Data%\AppSync
  • %Application Data%\AppSync\Low
  • %Application Data%\AppSync\CR_E83EE.tmp
  • %Application Data%\AppSync\mozilla-temp-files

(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).)

Dropping Routine

This Potentially Unwanted Application drops the following files:

  • %Application Data%\AppSync\SetupExe(201701240615299E0).log
  • %Application Data%\AppSync\MSIa2c4d.LOG
  • %Application Data%\AppSync\IXP000.TMP\SmallInstaller.exe
  • %Application Data%\AppSync\AdobeSFX.log
  • %Application Data%\AppSync\dd_vcredistUI0FC1.txt
  • %Application Data%\AppSync\dd_vcredistUI0FD5.txt
  • %Application Data%\AppSync\vminst.log_20170124_112725.log
  • %Application Data%\AppSync\IXP000.TMP\McUpdater.dll
  • %Application Data%\AppSync\MSI6f768.LOG
  • %Application Data%\AppSync\MSI25c23.LOG
  • %Application Data%\AppSync\MSIf9aa9.LOG
  • %Application Data%\AppSync\dd_wcf_CA_smci_20161212_135109_353.txt
  • %Application Data%\AppSync\wmsetup.log
  • %Application Data%\AppSync\ToUnzip\AppMaster.exe
  • %Application Data%\AppSync\dd_vcredistMSI0FC1.txt
  • %Application Data%\AppSync\jusched.log
  • %Application Data%\AppSync\dd_NDP452-KB2901907-x86-x64-AllOS-ENU_decompression_log.txt
  • %User Temp%\reveal.dll
  • %Application Data%\AppSync\dd_SetupUtility.txt
  • %Application Data%\AppSync\MSI5a7c3.LOG
  • %Application Data%\AppSync\ose00000.exe
  • %Application Data%\AppSync\MSId1a0.LOG
  • %AppDataLocal%\GDIPFONTCACHEV1.DAT
  • %Application Data%\AppSync\MSIb5e83.LOG
  • %User Temp%\handleFS.dll
  • %Application Data%\AppSync\MSI7e436.LOG
  • %User Temp%\Action.log
  • %Application Data%\AppSync\WebInstaller\ServiceUpdaterLogs.log
  • %Application Data%\AppSync\MSI27204.LOG
  • %Application Data%\AppSync\MSIbab6b.LOG
  • %Application Data%\AppSync\MSI547d8.LOG
  • %Application Data%\AppSync\IXP000.TMP\McUtil.dll
  • %Application Data%\AppSync\Action.log
  • %Application Data%\AppSync\MSI18620.LOG
  • %Application Data%\AppSync\StructuredQuery.log
  • %Application Data%\AppSync\au-descriptor-1.8.0_211-b12.xml
  • %Application Data%\AppSync\RGI282A.tmp-tmp
  • %Application Data%\AppSync\ASPNETSetup_00001.log
  • %Application Data%\AppSync\dd_wcf_CA_smci_20161212_135110_351.txt
  • %Application Data%\AppSync\MSIa6383.LOG
  • %Application Data%\AppSync\MSI19f3b.LOG
  • %Application Data%\AppSync\MSI11747.LOG
  • %Application Data%\AppSync\Adobe_ADMLogs\Adobe_GDE.log
  • %Application Data%\AppSync\RGI282A.tmp
  • %Application Data%\AppSync\Microsoft .NET Framework 4.5.2 Setup_20161212_135033207-MSI_netfx_Full_GDR_x64.msi.txt
  • %Application Data%\AppSync\Tom.bmp
  • %Application Data%\AppSync\ASPNETSetup_00000.log
  • %Application Data%\AppSync\handleFS.dll
  • %Application Data%\AppSync\MSI351f6.LOG
  • %Application Data%\AppSync\MSIbaba9.LOG
  • %Application Data%\AppSync\Adobe_ADMLogs\Adobe_ADM.log
  • %Application Data%\AppSync\Microsoft .NET Framework 4.5.2 Setup_20161212_135033207.html
  • %Application Data%\AppSync\AdobeARM.log
  • %Application Data%\AppSync\jawshtml.html
  • %Application Data%\AppSync\All.log
  • %Application Data%\AppSync\reveal.dll
  • %Application Data%\AppSync\MSI97997.LOG
  • %Application Data%\AppSync\ToUnzip\AppMaster.exe.config
  • %Application Data%\AppSync\dd_vcredistMSI0FD5.txt
  • %Application Data%\AppSync\chrome_BITS_3756_19263\9.1_all_easylist.crx3
  • %Application Data%\AppSync\chrome_installer.log
  • %Application Data%\AppSync\Guest.bmp
  • %User Temp%\All.log
  • %Application Data%\AppSync\Administrator.bmp
  • %Application Data%\AppSync\MSIaaade.LOG
  • %Application Data%\AppSync\vmmsi.log_20170124_112725.log
  • %Application Data%\AppSync\MSI20ab9.LOG
  • %Application Data%\AppSync\MSIbee93.LOG
  • %Application Data%\AppSync\acrord32_sbx\BroadcastMsg_1557285428.txt
  • %Application Data%\AppSync\FXSAPIDebugLogFile.txt
  • %Application Data%\AppSync\MSI733bc.LOG
  • %Application Data%\AppSync\JavaDeployReg.log
  • %Application Data%\AppSync\CR_E83EE.tmp\setup.exe
  • %Application Data%\AppSync\MSIcaa33.LOG

(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).. %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).. %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).)

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.850

Step 1

Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.

Step 2

Search and delete these components

[ Learn More ]
There may be some components that are hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the "More advanced options" option to include all hidden files and folders in the search result.
  • %Application Data%\AppSync\SetupExe(201701240615299E0).log
  • %Application Data%\AppSync\MSIa2c4d.LOG
  • %Application Data%\AppSync\IXP000.TMP\SmallInstaller.exe
  • %Application Data%\AppSync\AdobeSFX.log
  • %Application Data%\AppSync\dd_vcredistUI0FC1.txt
  • %Application Data%\AppSync\dd_vcredistUI0FD5.txt
  • %Application Data%\AppSync\vminst.log_20170124_112725.log
  • %Application Data%\AppSync\IXP000.TMP\McUpdater.dll
  • %Application Data%\AppSync\MSI6f768.LOG
  • %Application Data%\AppSync\MSI25c23.LOG
  • %Application Data%\AppSync\MSIf9aa9.LOG
  • %Application Data%\AppSync\dd_wcf_CA_smci_20161212_135109_353.txt
  • %Application Data%\AppSync\wmsetup.log
  • %Application Data%\AppSync\ToUnzip\AppMaster.exe
  • %Application Data%\AppSync\dd_vcredistMSI0FC1.txt
  • %Application Data%\AppSync\jusched.log
  • %Application Data%\AppSync\dd_NDP452-KB2901907-x86-x64-AllOS-ENU_decompression_log.txt
  • %User Temp%\reveal.dll
  • %Application Data%\AppSync\dd_SetupUtility.txt
  • %Application Data%\AppSync\MSI5a7c3.LOG
  • %Application Data%\AppSync\ose00000.exe
  • %Application Data%\AppSync\MSId1a0.LOG
  • %AppDataLocal%\GDIPFONTCACHEV1.DAT
  • %Application Data%\AppSync\MSIb5e83.LOG
  • %User Temp%\handleFS.dll
  • %Application Data%\AppSync\MSI7e436.LOG
  • %User Temp%\Action.log
  • %Application Data%\AppSync\WebInstaller\ServiceUpdaterLogs.log
  • %Application Data%\AppSync\MSI27204.LOG
  • %Application Data%\AppSync\MSIbab6b.LOG
  • %Application Data%\AppSync\MSI547d8.LOG
  • %Application Data%\AppSync\IXP000.TMP\McUtil.dll
  • %Application Data%\AppSync\Action.log
  • %Application Data%\AppSync\MSI18620.LOG
  • %Application Data%\AppSync\StructuredQuery.log
  • %Application Data%\AppSync\au-descriptor-1.8.0_211-b12.xml
  • %Application Data%\AppSync\RGI282A.tmp-tmp
  • %Application Data%\AppSync\ASPNETSetup_00001.log
  • %Application Data%\AppSync\dd_wcf_CA_smci_20161212_135110_351.txt
  • %Application Data%\AppSync\MSIa6383.LOG
  • %Application Data%\AppSync\MSI19f3b.LOG
  • %Application Data%\AppSync\MSI11747.LOG
  • %Application Data%\AppSync\Adobe_ADMLogs\Adobe_GDE.log
  • %Application Data%\AppSync\RGI282A.tmp
  • %Application Data%\AppSync\Microsoft .NET Framework 4.5.2 Setup_20161212_135033207-MSI_netfx_Full_GDR_x64.msi.txt
  • %Application Data%\AppSync\Tom.bmp
  • %Application Data%\AppSync\ASPNETSetup_00000.log
  • %Application Data%\AppSync\handleFS.dll
  • %Application Data%\AppSync\MSI351f6.LOG
  • %Application Data%\AppSync\MSIbaba9.LOG
  • %Application Data%\AppSync\Adobe_ADMLogs\Adobe_ADM.log
  • %Application Data%\AppSync\Microsoft .NET Framework 4.5.2 Setup_20161212_135033207.html
  • %Application Data%\AppSync\AdobeARM.log
  • %Application Data%\AppSync\jawshtml.html
  • %Application Data%\AppSync\All.log
  • %Application Data%\AppSync\reveal.dll
  • %Application Data%\AppSync\MSI97997.LOG
  • %Application Data%\AppSync\ToUnzip\AppMaster.exe.config
  • %Application Data%\AppSync\dd_vcredistMSI0FD5.txt
  • %Application Data%\AppSync\chrome_BITS_3756_19263\9.1_all_easylist.crx3
  • %Application Data%\AppSync\chrome_installer.log
  • %Application Data%\AppSync\Guest.bmp
  • %User Temp%\All.log
  • %Application Data%\AppSync\Administrator.bmp
  • %Application Data%\AppSync\MSIaaade.LOG
  • %Application Data%\AppSync\vmmsi.log_20170124_112725.log
  • %Application Data%\AppSync\MSI20ab9.LOG
  • %Application Data%\AppSync\MSIbee93.LOG
  • %Application Data%\AppSync\acrord32_sbx\BroadcastMsg_1557285428.txt
  • %Application Data%\AppSync\FXSAPIDebugLogFile.txt
  • %Application Data%\AppSync\MSI733bc.LOG
  • %Application Data%\AppSync\JavaDeployReg.log
  • %Application Data%\AppSync\CR_E83EE.tmp\setup.exe
  • %Application Data%\AppSync\MSIcaa33.LOG

Step 3

Search and delete these folders

[ Learn More ]
Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden folders in the search result.
  • %Application Data%\AppSync\chrome_BITS_3756_19263
  • %Application Data%\AppSync\Adobe_ADMLogs
  • %Application Data%\AppSync\acrocef_low
  • %Application Data%\AppSync\IXP000.TMP
  • %Application Data%\AppSync\hsperfdata_Administrator
  • %Application Data%\AppSync\ToUnzip
  • %Application Data%\AppSync\WebInstaller
  • %Application Data%\AppSync\WPDNSE
  • %Application Data%\AppSync\Deployment
  • %Application Data%\AppSync\acrord32_sbx
  • %Application Data%\AppSync
  • %Application Data%\AppSync\Low
  • %Application Data%\AppSync\CR_E83EE.tmp
  • %Application Data%\AppSync\mozilla-temp-files

Step 4

Scan your computer with your Trend Micro product to delete files detected as PUA.MSIL.AppSync.AA. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check the following Trend Micro Support pages for more information:


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