ADW_BROWSEOUT

 Modified by: Alvin John Nieto

 ALIASES:

Adware.Adpopup (Symantec); Downloader.NSIS.OutBrowse.b (Kaspersky); OutBrowse (fs) (Sunbelt)

 PLATFORM:

Windows 2000, Windows XP, Windows Server 2003

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 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:

630,762 bytes

File Type:

EXE

Memory Resident:

No

Initial Samples Received Date:

02 Apr 2014

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.

Other System Modifications

This adware adds the following registry keys:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D3388703-5092-487C-8217-11ADA1CA68B5}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D3388703-5092-487C-8217-11ADA1CA68B5}\Programmable

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D3388703-5092-487C-8217-11ADA1CA68B5}\LocalServer32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D3388703-5092-487C-8217-11ADA1CA68B5}\TypeLib

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D3388703-5092-487C-8217-11ADA1CA68B5}\Version

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{DCABB943-792E-44C4-9029-ECBEE6265AF9}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{DCABB943-792E-44C4-9029-ECBEE6265AF9}\1.0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{DCABB943-792E-44C4-9029-ECBEE6265AF9}\1.0\
FLAGS

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{DCABB943-792E-44C4-9029-ECBEE6265AF9}\1.0\
0

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{DCABB943-792E-44C4-9029-ECBEE6265AF9}\1.0\
0\win32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{DCABB943-792E-44C4-9029-ECBEE6265AF9}\1.0\
HELPDIR

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{3408AC0D-510E-4808-8F7B-6B70B1F88534}

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{3408AC0D-510E-4808-8F7B-6B70B1F88534}\ProxyStubClsid

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{3408AC0D-510E-4808-8F7B-6B70B1F88534}\ProxyStubClsid32

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{3408AC0D-510E-4808-8F7B-6B70B1F88534}\TypeLib

It adds the following registry entries:

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
CLSID\{D3388703-5092-487C-8217-11ADA1CA68B5}\LocalServer32
ServerExecutable = "%User Temp%\DownloadManager.exe"

HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
Interface\{3408AC0D-510E-4808-8F7B-6B70B1F88534}\TypeLib
Version = "1.0"

Dropping Routine

This adware drops the following files:

  • %User Temp%\DownloadManager.exe

(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 and 7.)

Other Details

This adware connects to the following possibly malicious URL:

  • http://{BLOCKED}ler.{BLOCKED}nload.com/Installer/Flow?pubid={value}&distid={value}&productid={value}&subpubid={value}&campaignid={value}&networkid={value}&dfb={value}&os={os version}&iev={IE version}&ffv={Firefox version}&chromev={Chrome version}&macaddress={MAC address}&netv={value}&hb={value}&systembit={32|64}&version={value}
  • http://{BLOCKED}creen.apps-track.com/offers/DynamicOfferScreen?offerid={value}&distid={value}&leadp={value}&dfb={value}&hb={value}
  • http://{BLOCKED}ic.{BLOCKED}you.com/offers/

  SOLUTION

Minimum Scan Engine:

9.300

FIRST VSAPI PATTERN FILE:

1.496.44

FIRST VSAPI PATTERN DATE:

25 Mar 2014

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

Delete this registry key

[ Learn More ]

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_LOCAL_MACHINE\SOFTWARE\Classes\CLSID
    • {D3388703-5092-487C-8217-11ADA1CA68B5}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{D3388703-5092-487C-8217-11ADA1CA68B5}
    • Programmable
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{D3388703-5092-487C-8217-11ADA1CA68B5}
    • LocalServer32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{D3388703-5092-487C-8217-11ADA1CA68B5}
    • TypeLib
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{D3388703-5092-487C-8217-11ADA1CA68B5}
    • Version
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
    • {DCABB943-792E-44C4-9029-ECBEE6265AF9}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{DCABB943-792E-44C4-9029-ECBEE6265AF9}
    • 1.0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{DCABB943-792E-44C4-9029-ECBEE6265AF9}\1.0
    • FLAGS
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{DCABB943-792E-44C4-9029-ECBEE6265AF9}\1.0
    • 0
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{DCABB943-792E-44C4-9029-ECBEE6265AF9}\1.0\0
    • win32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{DCABB943-792E-44C4-9029-ECBEE6265AF9}\1.0
    • HELPDIR
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface
    • {3408AC0D-510E-4808-8F7B-6B70B1F88534}
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{3408AC0D-510E-4808-8F7B-6B70B1F88534}
    • ProxyStubClsid
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{3408AC0D-510E-4808-8F7B-6B70B1F88534}
    • ProxyStubClsid32
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{3408AC0D-510E-4808-8F7B-6B70B1F88534}
    • TypeLib

Step 3

Delete this registry value

[ Learn More ]

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_LOCAL_MACHINE\SOFTWARE\Classes\CLSID\{D3388703-5092-487C-8217-11ADA1CA68B5}\LocalServer32
    • ServerExecutable = "%User Temp%\DownloadManager.exe"
  • In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\Interface\{3408AC0D-510E-4808-8F7B-6B70B1F88534}\TypeLib
    • Version = "1.0"

Step 4

Search and delete this file

[ Learn More ]
There may be some files 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%\DownloadManager.exe

Step 5

Scan your computer with your Trend Micro product to delete files detected as ADW_BROWSEOUT. 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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