ADW_EORENSO
a variant of Win32/Adware.EoRezo.AT application (NOD32)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
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
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
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
- %User Profile%\Local Settings\Application Data\tuto4pc_jp_26
Step 3
Search and delete these files
- %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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