ADW_INSTALLCORE.GD
Windows
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
616,856 bytes
EXE
No
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
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
- %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
- %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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