ADW_EORENSO


 ALIASES:

a variant of Win32/Adware.EoRezo.AT application (NOD32)

 PLATFORM:

Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)

 OVERALL RISK RATING:
 DAMAGE POTENTIAL:
 DISTRIBUTION POTENTIAL:
 REPORTED INFECTION:
 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:

3,994,064 bytes

Memory Resident:

No

Initial Samples Received Date:

11 Nov 2013

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 Profile%\Local Settings\Application Data\tuto4pc_jp_26
  • %User Profile%\Local Settings\Application Data\tuto4pc_jp_26\tuto4pc_jp_26
  • %User Profile%\Local Settings\Application Data\tuto4pc_jp_26\tuto4pc_jp_26\1.10

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.)

Dropping Routine

This adware drops the following files:

  • %User Profile%\Local Settings\Application Data\tuto4pc_jp_26\tuto4pc_jp_26\1.10\cnf.cyl
  • %User Profile%\Local Settings\Application Data\tuto4pc_jp_26\tuto4pc_jp_26\1.10\eorezo.cyl
  • %User Profile%\Cookies\{username}@.ldowi[2].txt
  • %User Profile%\Cookies\{username}@affiliate.gwmtracker.txt
  • %User Profile%\Cookies\{username}@mmy[2].txt
  • %User Profile%\Cookies\{username}@network.adsmarket[2].txt
  • %User Profile%\Cookies\{username}@sampleprizecenter[1].txt
  • %User Profile%\Cookies\{username}@systweak[2].txt
  • %User Profile%\Cookies\{username}@adxnxs[1].txt
  • %User Profile%\Cookies\{username}@adds.yahoo[2].txt
  • %User Profile%\Cookies\{username}@bluekai[2].txt
  • %User Profile%\Cookies\{username}@exelator[1].txt
  • %User Profile%\Cookies\{username}@ib.mookie1[2].txt
  • %User Profile%\Cookies\{username}@legolas-media[2].txt
  • %User Profile%\Cookies\{username}@mookie1[1].txt
  • %User Profile%\Cookies\{username}@openx[1].txt
  • %User Profile%\Cookies\{username}@pubmatic[2].txt
  • %User Profile%\Cookies\{username}@ru4[1].txt
  • %User Profile%\Cookies\{username}@tidaltv[2].txt
  • %User Profile%\Cookies\{username}@yahoo[2].txt
  • %Application Data%\Microsoft\Protect\{GUID}

(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000, XP, and Server 2003, or C:\Users\{user name} on Windows Vista and 7.. %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)

Other Details

This adware connects to the following possibly malicious URL:

  • http://a.ldowi.com/click/?s=265604&c=899395&internal=113_69w9nj_1
  • http://a.panxh.com/click/?s=265604&c=895042
  • http://a.panxh.com/click/?s=265604&c=899395
  • http://affiliate.gwmtracker.com/rd/r.php?sid=1641&pub=200978&c1=293834&c2=&c3=
  • http://ajax.googleapis.com/ajax/libs/webfont/1/webfont.js
  • http://cdn.cdncomputer.com/css/mobile/11826.css
  • http://cdn.cdncomputer.com/images/11817/sprite.png
  • http://cdn.cdncomputer.com/images/11826/bg_main.jpg
  • http://cdn.cdncomputer.com/images/11826/sprite.gif
  • http://cdn.cdncomputer.com/js/main.js
  • http://cdn.dsultra.com/images/analytics/sprite5.gif
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/award_bg_left.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/award_bg_middle.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/award_bg_right.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/buttet.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/call_icon.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/cert.png
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/download3000_rating5.png
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/download_btn_0.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/feature_bg_LeftBottom.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/feature_bg_LeftMiddle.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/feature_bg_LeftTop.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/feature_bg_RightBottom.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/feature_bg_RightMiddle.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/feature_bg_RightTop.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/feature_bg_TopMiddle.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/feature_bg_bottomMiddle.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/filecluster_scan_report.gif
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/fiveStar.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/green_tick.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/head_bg.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/mscp_logo.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/scan_icon.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/si_editor5.gif
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/speed_icon.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/step1_download.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/step2_run_0.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/step3_rcpScreen_0.jpg
  • http://cdn.systweak.com/downloads/website/images/RC/DownloadST/DownloadLp/step_box.jpg
  • http://fonts.googleapis.com/css?family=Libre+Baskerville
  • http://images.scanalert.com/meter/www.systweak.com/13.gif
  • http://network.adsmarket.com/click/jmJsmGPKfJiRZnKWjZuplLdiaZZfnYCbiZBsnmSdf5W3aGmbY5ypmYpmaZ1f
  • http://themes.googleusercontent.com/static/fonts/librebaskerville/v1/pR0sBQVcY0JZc_ciXjFsK2F7WC2UG4aaA4SZk0HPHJg.eot
  • http://www.google-analytics.com/ga.js
  • http://www.google.com/ads/search/module/ads/1.0/1b925b7b2536cdc80ff264525f37f95ef5c0aa3a/n/domains.js
  • http://www.google.com/adsense/domains/caf.js
  • http://www.gstatic.com/domainads/tracking/caf.gif?ts=1384558806250&rid=7980525
  • http://www.gstatic.com/domainads/tracking/caf.gif?ts=1384559104859&rid=52527
  • http://www.systweak.com/registrycleaner/mmy/?utm_source=matomy&utm_campaign=matomy&pub_id=61335&ce_cid=20ncUV21vVkRuzrB1SY7ig1vHdVN000.

  SOLUTION

Minimum Scan Engine:

9.300

SSAPI PATTERN File:

1.454.42

SSAPI PATTERN Date:

08 Nov 2013

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 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 Profile%\Local Settings\Application Data\tuto4pc_jp_26

Step 3

Search and delete these files

[ 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 Profile%\Cookies\{username}@.ldowi[2].txt
  • %User Profile%\Cookies\{username}@affiliate.gwmtracker.txt
  • %User Profile%\Cookies\{username}@mmy[2].txt
  • %User Profile%\Cookies\{username}@network.adsmarket[2].txt
  • %User Profile%\Cookies\{username}@sampleprizecenter[1].txt
  • %User Profile%\Cookies\{username}@systweak[2].txt
  • %User Profile%\Cookies\{username}@adxnxs[1].txt
  • %User Profile%\Cookies\{username}@adds.yahoo[2].txt
  • %User Profile%\Cookies\{username}@bluekai[2].txt
  • %User Profile%\Cookies\{username}@exelator[1].txt
  • %User Profile%\Cookies\{username}@ib.mookie1[2].txt
  • %User Profile%\Cookies\{username}@legolas-media[2].txt
  • %User Profile%\Cookies\{username}@mookie1[1].txt
  • %User Profile%\Cookies\{username}@openx[1].txt
  • %User Profile%\Cookies\{username}@pubmatic[2].txt
  • %User Profile%\Cookies\{username}@ru4[1].txt
  • %User Profile%\Cookies\{username}@tidaltv[2].txt
  • %User Profile%\Cookies\{username}@yahoo[2].txt
  • %Application Data%\Microsoft\Protect\{GUID}

Step 4

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