PUP.Optional.Coupoon

Short bio

PUP.Optional.Coupoon is the detection name for a potentially unwanted program (PUP), specifically a type of adware.

Type and source of infection

Once installed, PUP.Optional.Coupoon targets the browser and modifies settings by either changing the start/search page, redirecting the browser, and/or forcing an excessive amount of pop-up advertisements.

PUP.Optional.Coupoon comes bundled with other software that is downloaded from third-party websites.

Protection

Malwarebytes protects users from PUP.Optional.Coupoon by using real-time protection.

Malwarebytes blocks PUP.Optional.Coupoon

Remediation

Malwarebytes can detect and remove PUP.Optional.Coupoon without further user interaction.

Please download Malwarebytes to your desktop.
Double-click MBSetup.exe and follow the prompts to install the program.
When your Malwarebytes for Windows installation completes, the program opens to the Welcome to Malwarebytes screen.
Click on the Get started button.
Click Scan to start a Threat Scan.
Click Quarantine to remove the found threats.
Reboot the system if prompted to complete the removal process.

Malwarebytes removal log

A Malwarebytes log of removal will look similar to this:

Malwarebytes Anti-Malware
www.malwarebytes.org

Scan Date: 4/10/2015
Scan Time: 3:15:02 PM
Logfile: mbamCoupoon.txt
Administrator: Yes

Version: 2.01.0.1004
Malware Database: v2015.04.10.04
Rootkit Database: v2015.03.31.01
License: Free
Malware Protection: Disabled
Malicious Website Protection: Disabled
Self-protection: Disabled

OS: Windows 7 Service Pack 1
CPU: x86
File System: NTFS
User: Malwarebytes

Scan Type: Threat Scan
Result: Completed
Objects Scanned: 290100
Time Elapsed: 7 min, 19 sec

Memory: Enabled
Startup: Enabled
Filesystem: Enabled
Archives: Enabled
Rootkits: Disabled
Heuristics: Enabled
PUP: Enabled
PUM: Enabled

Processes: 3
PUP.Optional.Coupoon.A, C:\Program Files\015\tpydklloou32.exe, 3224, Delete-on-Reboot, [46a62a40b2d8c76fce1c142542c4a060]
PUP.Optional.Coupoon.A, C:\Program Files\015\tpydklloou32.exe, 3404, Delete-on-Reboot, [46a62a40b2d8c76fce1c142542c4a060]
PUP.Optional.Coupoon.A, C:\Program Files\coupoon\iiwjljrnpc.exe, 2908, Delete-on-Reboot, [7a726505b3d7999dd416c77262a40000]

Modules: 4
PUP.Optional.Coupoon.A, C:\Program Files\coupoon\libeay32.dll, Delete-on-Reboot, [af3dda9054364cea238c5a6022e17b85],
PUP.Optional.Coupoon.A, C:\Program Files\coupoon\nfapi.dll, Delete-on-Reboot, [af3dda9054364cea238c5a6022e17b85],
PUP.Optional.Coupoon.A, C:\Program Files\coupoon\ProtocolFilters.dll, Delete-on-Reboot, [af3dda9054364cea238c5a6022e17b85],
PUP.Optional.Coupoon.A, C:\Program Files\coupoon\ssleay32.dll, Delete-on-Reboot, [af3dda9054364cea238c5a6022e17b85],

Registry Keys: 5
PUP.Optional.Coupoon.A, HKLM\SYSTEM\CURRENTCONTROLSET\SERVICES\tpydklloou32, Quarantined, [46a62a40b2d8c76fce1c142542c4a060],
PUP.Optional.Coupoon.A, HKLM\SYSTEM\CURRENTCONTROLSET\SERVICES\CoupoonService, Quarantined, [7a726505b3d7999dd416c77262a40000],
PUP.Optional.Coupoon.A, HKLM\SOFTWARE\coupoon, Quarantined, [bc30bab0ccbe979f9163fd55d23334cc],
PUP.Optional.Coupoon.A, HKU\S-1-5-18\SOFTWARE\APPDATALOW\SOFTWARE\coupoon, Quarantined, [a5475119abdf3ff726cc193949bcb050],
PUP.Optional.GlobalUpdate.C, HKCU\SOFTWARE\GLOBALUPDATE\UPDATE\PROXY, Quarantined, [ffedd7934d3dbd7974fb02ba7291ad53],

Registry Values: 3
PUP.Optional.GlobalUpdate.C, HKLM\SOFTWARE\GLOBALUPDATE\UPDATEDEV|AuCheckPeriodMs, 21600000, Quarantined, [27c534366327082ee6f025961ae9ff01]
PUP.Optional.AdPeak.A, HKLM\SYSTEM\CURRENTCONTROLSET\SERVICES\tpydklloou32|ImagePath, C:\Program Files\015\tpydklloou32.exe run options=10001010150000000000000000000000 source=10 stdout=reg:HKEY_LOCAL_MACHINE,Software\\MIA,MIA_ERROR , Quarantined, [e20a5614028841f55b9272e033d241bf]
PUP.Optional.GlobalUpdate.C, HKCU\SOFTWARE\GLOBALUPDATE\UPDATE\PROXY|source, IE, Quarantined, [ffedd7934d3dbd7974fb02ba7291ad53]

Registry Data: 0
(No malicious items detected)

Folders: 2
PUP.Optional.Coupoon.A, C:\Program Files\coupoon, Delete-on-Reboot, [af3dda9054364cea238c5a6022e17b85],
PUP.Optional.Coupoon.A, C:\Program Files\coupoon\SSL, Quarantined, [af3dda9054364cea238c5a6022e17b85],

Files: 10
PUP.Optional.Coupoon.A, C:\Program Files\015\tpydklloou32.exe, Delete-on-Reboot, [46a62a40b2d8c76fce1c142542c4a060],
PUP.Optional.Coupoon.A, C:\Program Files\coupoon\iiwjljrnpc.exe, Delete-on-Reboot, [7a726505b3d7999dd416c77262a40000],
PUP.Optional.Coupoon.A, C:\Users\{username}\Desktop\Coupoon.exe, Quarantined, [806c44267b0f5ed845a51920fd09b848],
PUP.Optional.Coupoon.A, C:\Program Files\10\uninstaller.exe, Quarantined, [7a722545305a59dd45a53affbe4840c0],
PUP.Optional.Coupoon.A, C:\Program Files\coupoon\64.ico, Quarantined, [af3dda9054364cea238c5a6022e17b85],
PUP.Optional.Coupoon.A, C:\Program Files\coupoon\libeay32.dll, Delete-on-Reboot, [af3dda9054364cea238c5a6022e17b85],
PUP.Optional.Coupoon.A, C:\Program Files\coupoon\nfapi.dll, Delete-on-Reboot, [af3dda9054364cea238c5a6022e17b85],
PUP.Optional.Coupoon.A, C:\Program Files\coupoon\nfregdrv.exe, Quarantined, [af3dda9054364cea238c5a6022e17b85],
PUP.Optional.Coupoon.A, C:\Program Files\coupoon\ProtocolFilters.dll, Delete-on-Reboot, [af3dda9054364cea238c5a6022e17b85],
PUP.Optional.Coupoon.A, C:\Program Files\coupoon\ssleay32.dll, Delete-on-Reboot, [af3dda9054364cea238c5a6022e17b85],

Physical Sectors: 0
(No malicious items detected)

(end)

Add an exclusion

Should users wish to keep this program and exclude it from being detected in future scans, they can add the program to the exclusions list. Here’s how to do it.

Open Malwarebytes for Windows.
Click the Detection History
Click the Allow List
To add an item to the Allow List, click Add.
Select the exclusion type Allow a file or folder and use the Select a folder button to select the main folder for the software that you wish to keep.
Repeat this for any secondary files or folder(s) that belong to the software.

If you want to allow the program to connect to the Internet, for example to fetch updates, also add an exclusion of the type Allow an application to connect to the internet and use the Browse button to select the file you wish to grant access.

Traces/IOCs

You may see these entries in FRST logs:

R1 netfilter; C:\Windows\System32\drivers\netfilter.sys [31744 2015-04-03] (NetFilterSDK.com) [File not signed] 
() C:\end
() C:\Program Files\coupoon
() C:\Program Files\coupoon\ProtocolFilters.dll