ADW_INSTALLCORE.GD


 PLATFORM:

Windows

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

  • Threat Type: Adware

  • Destructiveness: No

  • Encrypted:

  • In the wild: Yes

  OVERVIEW


This adware 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:

616,856 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

02 Apr 2016

Arrival Details

This adware 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 adware creates the following folders:

  • %User Temp%\ish74468
  • %User Temp%\ish74468\css
  • %User Temp%\ish74468\css\sdk-ui
  • %User Temp%\ish74468\css\sdk-ui\images
  • %User Temp%\ish74468\images
  • %User Temp%\ish74468\locale
  • %User Temp%\is266766283
  • %User Temp%\IS2667~1
  • %User Temp%\IS2667~1\87449_stp
  • %User Temp%\IS2667~1\87244_stp
  • %User Temp%\IS2667~1\87377_stp
  • %User Temp%\IS2667~1\87211_stp
  • %User Temp%\IS2667~1\87280_stp
  • %User Temp%\YL
  • %User Temp%\BF_YL
  • %User Temp%\WY_YL
  • %User Temp%\IS2667~1\87689_stp

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Dropping Routine

This adware drops the following files:

  • %User Temp%\000122B5.log
  • %User Temp%\ish74468\css\ie6_main.css
  • %User Temp%\ish74468\css\main.css
  • %User Temp%\ish74468\css\sdk-ui\browse.css
  • %User Temp%\ish74468\css\sdk-ui\button.css
  • %User Temp%\ish74468\css\sdk-ui\checkbox.css
  • %User Temp%\ish74468\css\sdk-ui\images\button-bg.png
  • %User Temp%\ish74468\css\sdk-ui\images\progress-bg-corner.png
  • %User Temp%\ish74468\css\sdk-ui\images\progress-bg.png
  • %User Temp%\ish74468\css\sdk-ui\images\progress-bg2.png
  • %User Temp%\ish74468\css\sdk-ui\progress-bar.css
  • %User Temp%\ish74468\csshover3.htc
  • %User Temp%\ish74468\form.bmp.Mask
  • %User Temp%\ish74468\images\banner_black.png
  • %User Temp%\ish74468\images\bg.png
  • %User Temp%\ish74468\images\close.png
  • %User Temp%\ish74468\images\close_hover.png
  • %User Temp%\ish74468\images\Color_Button.png
  • %User Temp%\ish74468\images\Color_Button_Hover.png
  • %User Temp%\ish74468\images\Grey_Button.png
  • %User Temp%\ish74468\images\Grey_Button_Hover.png
  • %User Temp%\ish74468\images\icon_generic.png
  • %User Temp%\ish74468\images\loader.gif
  • %User Temp%\ish74468\images\Minimize.png
  • %User Temp%\ish74468\images\Pause_Button.png
  • %User Temp%\ish74468\images\progress-bg.png
  • %User Temp%\ish74468\images\Progress.png
  • %User Temp%\ish74468\images\ProgressBar.png
  • %User Temp%\ish74468\images\Quick_Specs.png
  • %User Temp%\ish74468\images\Resume_Button.png
  • %User Temp%\ish74468\locale\EN.locale
  • %User Temp%\ish74468\locale\ES.locale
  • %User Temp%\ish74468\bootstrap_44267.html
  • %User Temp%\00014CF2.log
  • %User Temp%\icreinstall_{malware file name}
  • %Desktop%\Continue Dropbox Installation.lnk
  • %User Temp%\00015399.log
  • %User Temp%\is266766283\87122_stp.EXE
  • %User Temp%\is266766283\87122_stp.EXE.part
  • %User Temp%\00016879.log
  • %User Temp%\000168F6.log
  • %User Temp%\00016905.log
  • %User Temp%\IS2667~1\87211_stp.CIS
  • %User Temp%\000169A2.log
  • %User Temp%\IS2667~1\87244_stp.CIS
  • %User Temp%\00016A3E.log
  • %User Temp%\00016B38.log
  • %User Temp%\IS2667~1\87280_stp.CIS
  • %User Temp%\00016C22.log
  • %User Temp%\00016C51.log
  • %User Temp%\00016CED.log
  • %User Temp%\IS2667~1\87377_stp.CIS
  • %User Temp%\00016E26.log
  • %User Temp%\IS2667~1\87449_stp.CIS
  • %User Temp%\IS2667~1\87449_stp.CIS.part
  • %User Temp%\IS2667~1\87244_stp.CIS.part
  • %User Temp%\IS2667~1\87211_stp.CIS.part
  • %User Temp%\IS2667~1\87377_stp.CIS.part
  • %User Temp%\00017990.log
  • %User Temp%\isf_87505.flat
  • %User Temp%\IS2667~1\87449_stp\yt12.html
  • %User Temp%\00017B84.log
  • %User Temp%\IS2667~1\87449_stp\yt18.html
  • %User Temp%\isf_87514.flat
  • %User Temp%\IS2667~1\87280_stp.CIS.part
  • %User Temp%\00017DD6.log
  • %User Temp%\isf_87562.flat
  • %User Temp%\IS2667~1\87244_stp\BFyt12.html
  • %User Temp%\00017E91.log
  • %User Temp%\IS2667~1\87244_stp\BFyt18.html
  • %User Temp%\00017F1E.log
  • %User Temp%\IS2667~1\87377_stp\WYyt12.html
  • %User Temp%\IS2667~1\87377_stp\WYyt18.html
  • %User Temp%\isf_87634.flat
  • %User Temp%\00017FF8.log
  • %User Temp%\IS2667~1\87211_stp\icut.dat
  • %User Temp%\IS2667~1\87689_stp.CIS
  • %User Temp%\000184EA.log
  • %User Temp%\isf_87726.flat
  • %User Temp%\IS2667~1\87280_stp\asgnd.json
  • %User Temp%\IS2667~1\87689_stp.CIS.part
  • %User Temp%\00018F2B.log
  • %User Temp%\00018F4A.log
  • %User Temp%\00019006.log
  • %User Temp%\0001943C.log
  • %User Temp%\isf_87798.flat
  • %User Temp%\IS2667~1\87689_stp\PFGRP.dll

(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.. %Desktop% is the desktop folder, where it usually is C:\Documents and Settings\{user name}\Desktop in Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\Desktop in Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)

Other Details

This adware connects to the following possibly malicious URL:

  • http://os.{BLOCKED}wncdn.com
  • http://dw4.{BLOCKED}wn.com/{random path}
  • http://cdneu.{BLOCKED}wncdn.com/ofr/Niniwic/YL/Niniwic_Tefenece_21Jan16.cis
  • http://cdneu.{BLOCKED}wncdn.com/ofr/Solululadul/icut.cis
  • http://cdneu.{BLOCKED}wncdn.com/ofr/Solululadul/asgnd.cis
  • http://cdneu.{BLOCKED}wncdn.com/ofr/Niniwic/YL/Niniwic_yl_21Jan16.cis
  • http://cdneu.{BLOCKED}wncdn.com/ofr/Leyeluyili/Leyeluyili_020915.cis
  • http://cdnus.{BLOCKED}wncdn.com/ofr/Niniwic/YL/Niniwic_Tefenece_21Jan16.cis
  • http://cdnus.{BLOCKED}wncdn.com/ofr/Solululadul/asgnd.cis
  • http://cdnus.{BLOCKED}wncdn.com/ofr/Niniwic/YL/Niniwic_yl_21Jan16.cis
  • http://os.{BLOCKED}wncdn.com/ofr/Solululadul/icut.cis
  • http://os.{BLOCKED}wncdn.com/ofr/Nupenun/Nupenun_290216.cis
  • http://cdnus.{BLOCKED}wncdn.com/ofr/Nupenun/Nupenun_290216.cis
  • {BLOCKED}0.1
  • {BLOCKED}136.232
  • {BLOCKED}.105.132
  • {BLOCKED}.216.70
  • {BLOCKED}.86.56
  • {BLOCKED}.87.151
  • {BLOCKED}5.27.45
  • {BLOCKED}.87.155

This report is generated via an automated analysis system.

  SOLUTION

Minimum Scan Engine:

9.8

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

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.
  • %User Temp%\000122B5.log
  • %User Temp%\ish74468\css\ie6_main.css
  • %User Temp%\ish74468\css\main.css
  • %User Temp%\ish74468\css\sdk-ui\browse.css
  • %User Temp%\ish74468\css\sdk-ui\button.css
  • %User Temp%\ish74468\css\sdk-ui\checkbox.css
  • %User Temp%\ish74468\css\sdk-ui\images\button-bg.png
  • %User Temp%\ish74468\css\sdk-ui\images\progress-bg-corner.png
  • %User Temp%\ish74468\css\sdk-ui\images\progress-bg.png
  • %User Temp%\ish74468\css\sdk-ui\images\progress-bg2.png
  • %User Temp%\ish74468\css\sdk-ui\progress-bar.css
  • %User Temp%\ish74468\csshover3.htc
  • %User Temp%\ish74468\form.bmp.Mask
  • %User Temp%\ish74468\images\banner_black.png
  • %User Temp%\ish74468\images\bg.png
  • %User Temp%\ish74468\images\close.png
  • %User Temp%\ish74468\images\close_hover.png
  • %User Temp%\ish74468\images\Color_Button.png
  • %User Temp%\ish74468\images\Color_Button_Hover.png
  • %User Temp%\ish74468\images\Grey_Button.png
  • %User Temp%\ish74468\images\Grey_Button_Hover.png
  • %User Temp%\ish74468\images\icon_generic.png
  • %User Temp%\ish74468\images\loader.gif
  • %User Temp%\ish74468\images\Minimize.png
  • %User Temp%\ish74468\images\Pause_Button.png
  • %User Temp%\ish74468\images\progress-bg.png
  • %User Temp%\ish74468\images\Progress.png
  • %User Temp%\ish74468\images\ProgressBar.png
  • %User Temp%\ish74468\images\Quick_Specs.png
  • %User Temp%\ish74468\images\Resume_Button.png
  • %User Temp%\ish74468\locale\EN.locale
  • %User Temp%\ish74468\locale\ES.locale
  • %User Temp%\ish74468\bootstrap_44267.html
  • %User Temp%\00014CF2.log
  • %User Temp%\icreinstall_{malware file name}
  • %Desktop%\Continue Dropbox Installation.lnk
  • %User Temp%\00015399.log
  • %User Temp%\is266766283\87122_stp.EXE
  • %User Temp%\is266766283\87122_stp.EXE.part
  • %User Temp%\00016879.log
  • %User Temp%\000168F6.log
  • %User Temp%\00016905.log
  • %User Temp%\IS2667~1\87211_stp.CIS
  • %User Temp%\000169A2.log
  • %User Temp%\IS2667~1\87244_stp.CIS
  • %User Temp%\00016A3E.log
  • %User Temp%\00016B38.log
  • %User Temp%\IS2667~1\87280_stp.CIS
  • %User Temp%\00016C22.log
  • %User Temp%\00016C51.log
  • %User Temp%\00016CED.log
  • %User Temp%\IS2667~1\87377_stp.CIS
  • %User Temp%\00016E26.log
  • %User Temp%\IS2667~1\87449_stp.CIS
  • %User Temp%\IS2667~1\87449_stp.CIS.part
  • %User Temp%\IS2667~1\87244_stp.CIS.part
  • %User Temp%\IS2667~1\87211_stp.CIS.part
  • %User Temp%\IS2667~1\87377_stp.CIS.part
  • %User Temp%\00017990.log
  • %User Temp%\isf_87505.flat
  • %User Temp%\IS2667~1\87449_stp\yt12.html
  • %User Temp%\00017B84.log
  • %User Temp%\IS2667~1\87449_stp\yt18.html
  • %User Temp%\isf_87514.flat
  • %User Temp%\IS2667~1\87280_stp.CIS.part
  • %User Temp%\00017DD6.log
  • %User Temp%\isf_87562.flat
  • %User Temp%\IS2667~1\87244_stp\BFyt12.html
  • %User Temp%\00017E91.log
  • %User Temp%\IS2667~1\87244_stp\BFyt18.html
  • %User Temp%\00017F1E.log
  • %User Temp%\IS2667~1\87377_stp\WYyt12.html
  • %User Temp%\IS2667~1\87377_stp\WYyt18.html
  • %User Temp%\isf_87634.flat
  • %User Temp%\00017FF8.log
  • %User Temp%\IS2667~1\87211_stp\icut.dat
  • %User Temp%\IS2667~1\87689_stp.CIS
  • %User Temp%\000184EA.log
  • %User Temp%\isf_87726.flat
  • %User Temp%\IS2667~1\87280_stp\asgnd.json
  • %User Temp%\IS2667~1\87689_stp.CIS.part
  • %User Temp%\00018F2B.log
  • %User Temp%\00018F4A.log
  • %User Temp%\00019006.log
  • %User Temp%\0001943C.log
  • %User Temp%\isf_87798.flat
  • %User Temp%\IS2667~1\87689_stp\PFGRP.dll

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.
  • %User Temp%\ish74468
  • %User Temp%\ish74468\css
  • %User Temp%\ish74468\css\sdk-ui
  • %User Temp%\ish74468\css\sdk-ui\images
  • %User Temp%\ish74468\images
  • %User Temp%\ish74468\locale
  • %User Temp%\is266766283
  • %User Temp%\IS2667~1
  • %User Temp%\IS2667~1\87449_stp
  • %User Temp%\IS2667~1\87244_stp
  • %User Temp%\IS2667~1\87377_stp
  • %User Temp%\IS2667~1\87211_stp
  • %User Temp%\IS2667~1\87280_stp
  • %User Temp%\YL
  • %User Temp%\BF_YL
  • %User Temp%\WY_YL
  • %User Temp%\IS2667~1\87689_stp

Step 4

Scan your computer with your Trend Micro product to delete files detected as ADW_INSTALLCORE.GD. 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 this Knowledge Base page for more information.


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