PUA_INSTALLCORE.GER
Win32/InstallCore.Gen.A (NOD32); Trojan.InstallCore (Quick Heal); W32/Install_Core.ATY (Fortinet)
Windows
Threat Type: Potentially Unwanted Application
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
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. It may be manually installed by a user.
It modifies the Internet Explorer Zone Settings.
It connects to certain websites to send and receive information.
TECHNICAL DETAILS
3,603,427 bytes
EXE
No
30 Aug 2018
Drops files, Connects to URLs/IPs, Displays windows
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.
It may be manually installed by a user.
Installation
This Potentially Unwanted Application adds the following folders:
- %User Temp%\inH{random}
- %User Temp%\inH{random}\css
- %User Temp%\inH{random}\css\sdk-ui
- %User Temp%\inH{random}\css\sdk-ui\images
- %User Temp%\inH{random}\images
- %User Temp%\inH{random}\locale
- %User Temp%\inH{random}\images\bgs
(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, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, and 8.)
It drops the following files:
- %User Temp%\{random}.log
- %User Temp%\inH{random}\csshover3.htc
- %User Temp%\inH{random}\form.bmp.Mask
- %User Temp%\inH{random}\css\ie6_main.css
- %User Temp%\inH{random}\css\main.css
- %User Temp%\inH{random}\css\sdk-ui\browse.css
- %User Temp%\inH{random}\css\sdk-ui\button.css
- %User Temp%\inH{random}\css\sdk-ui\checkbox.css
- %User Temp%\inH{random}\css\sdk-ui\progress-bar.css
- %User Temp%\inH{random}\css\sdk-ui\images\button-bg.png
- %User Temp%\inH{random}\css\sdk-ui\images\progress-bg-corner.png
- %User Temp%\inH{random}\css\sdk-ui\images\progress-bg.png
- %User Temp%\inH{random}\css\sdk-ui\images\progress-bg2.png
- %User Temp%\inH{random}\images\BG.jpg
- %User Temp%\inH{random}\images\Close.png
- %User Temp%\inH{random}\images\Close_Hover.png
- %User Temp%\inH{random}\images\Color_Button.png
- %User Temp%\inH{random}\images\Color_Button_Hover.png
- %User Temp%\inH{random}\images\Grey_Button.png
- %User Temp%\inH{random}\images\Grey_Button_Hover.png
- %User Temp%\inH{random}\images\Icon_Generic.png
- %User Temp%\inH{random}\images\Loader.gif
- %User Temp%\inH{random}\images\Pause_Button.png
- %User Temp%\inH{random}\images\Progress.png
- %User Temp%\inH{random}\images\ProgressBar.png
- %User Temp%\inH{random}\images\Quick_Specs.png
- %User Temp%\inH{random}\images\Resume_Button.png
- %User Temp%\inH{random}\images\sponsored.png
- %User Temp%\inH{random}\images\text-bg.png
- %User Temp%\inH{random}\images\bgs\0.jpg
- %User Temp%\inH{random}\images\bgs\1.jpg
- %User Temp%\inH{random}\images\bgs\2.jpg
- %User Temp%\inH{random}\images\bgs\3.jpg
- %User Temp%\inH{random}\images\bgs\4.jpg
- %User Temp%\inH{random}\images\bgs\5.jpg
- %User Temp%\inH{random}\images\bgs\6.jpg
- %User Temp%\inH{random}\images\bgs\wall.jpg
- %User Temp%\inH{random}\locale\CS.locale
- %User Temp%\inH{random}\locale\EL.locale
- %User Temp%\inH{random}\locale\EN.locale
- %User Temp%\inH{random}\locale\ID.locale
- %User Temp%\inH{random}\locale\JA.locale
- %User Temp%\inH{random}\locale\NL.locale
(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, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, and 8.)
Web Browser Home Page and Search Page Modification
This Potentially Unwanted Application modifies the Internet Explorer Zone Settings.
Other Details
This Potentially Unwanted Application connects to the following website to send and receive information:
- http://rp.{BLOCKED}ocksign.com/
NOTES:
This Potentially Unwanted Application (PUA) shows the following progress bar once executed:
A message box will appear, saying that a product configuration is missing:
SOLUTION
9.850
1.995.00
06 Sep 2018
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Identify and terminate files detected as PUA_INSTALLCORE.GER
- 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 4
Search and delete this folder
- %User Temp%\inH{random}
Step 5
Search and delete these files
- %User Temp%\{random}.log
Step 6
Scan your computer with your Trend Micro product to delete files detected as PUA_INSTALLCORE.GER. 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:
Step 7
Reset Internet security settings
Did this description help? Tell us how we did.