TROJ_STARTPAGE.WERX
Trojan.Startpage.S1656376 (CAT-QuickHeal), Win32.Trojan.Startpage.Hmhl (Tencent)
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It modifies the user's Internet Explorer home page into a certain website. This action allows the malware to point to a website which may contain malware, putting the affected computer at greater risk of malware infection.
TECHNICAL DETAILS
1,130,400 bytes
EXE
No
31 Jan 2018
Arrival Details
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Web Browser Home Page and Search Page Modification
This Trojan modifies the user's Internet Explorer home page to the following websites:
- http://search.{BLOCKED}portsinfonow.com/?source=Bing_v1-bb8&uid=08e7ade2-e815-4ae0-bc3f-bacafe4da4f7&uc=20180128&ap=appfocus154&i_id=sports__1.30
Other Details
This Trojan connects to the following URL(s) to check for an Internet connection:
- www.download.windowsupdate.com
It connects to the following possibly malicious URL:
- http://search.{BLOCKED}portsinfonow.com/?source=Bing_v1-bb8&uid=08e7ade2-e815-4ae0-bc3f-bacafe4da4f7&uc=20180128&ap=appfocus154&i_id=sports__1.30
- http://search.{BLOCKED}portsinfonow.com/styles/home/sports_v0?v=AYtbXCk6AE3b1tCu96lv8wW0dg6YOiCTcrNU5EhzSkA1
- http://maxcdn.{BLOCKED}rapcdn.com:443
- http://search.{BLOCKED}portsinfonow.com/scripts/home/common?v=HwLyTxs0TuXLmkZTfXIlI4dTZCQnfFDjLusFwlVcXj01
- http://search.{BLOCKED}portsinfonow.com/get/js/impression?uc=20180128&ap=appfocus154&source=Bing_v1-bb8&uid=08e7ade2-e815-4ae0-bc3f-bacafe4da4f7&i_id=sports__1.30
- http://imp.{BLOCKED}portsinfonow.com/impression.do?source=Bing_v1-bb8&sub_id=20180128&useragent=Mozilla%2F4.0+(compatible%3B+MSIE+6.0%3B+Windows+NT+5.1%3B+SV1%3B+.NET+CLR+2.0.50727)&traffic_source=appfocus154&user_id=08e7ade2-e815-4ae0-bc3f-bacafe4da4f7&implementation_id=sports__1.30&subid2=8.0.7601.17514&event=ex_set_ds
- http://imp.{BLOCKED}portsinfonow.com/impression.do?source=Bing_v1-bb8&sub_id=20180128&useragent=Mozilla%2F4.0+(compatible%3B+MSIE+6.0%3B+Windows+NT+5.1%3B+SV1%3B+.NET+CLR+2.0.50727)&traffic_source=appfocus154&user_id=08e7ade2-e815-4ae0-bc3f-bacafe4da4f7&implementation_id=sports__1.30&subid2=8.0.7601.17514&event=ex_set_hp
- http://imp.{BLOCKED}portsinfonow.com/impression.do?source=Bing_v1-bb8&sub_id=20180128&useragent=Mozilla%2F4.0+(compatible%3B+MSIE+6.0%3B+Windows+NT+5.1%3B+SV1%3B+.NET+CLR+2.0.50727)&traffic_source=appfocus154&user_id=08e7ade2-e815-4ae0-bc3f-bacafe4da4f7&implementation_id=sports__1.30&subid2=8.0.7601.17514&event=ex_installed
- http://imp.{BLOCKED}portsinfonow.com/impression.do?source=Bing_v1-bb8&sub_id=20180128&useragent=Mozilla%2F4.0+(compatible%3B+MSIE+6.0%3B+Windows+NT+5.1%3B+SV1%3B+.NET+CLR+2.0.50727)&traffic_source=appfocus154&user_id=08e7ade2-e815-4ae0-bc3f-bacafe4da4f7&implementation_id=sports__1.30&subid2=8.0.7601.17514&event=ex_executed
- http://search.{BLOCKED}portsinfonow.com/
- http://search.{BLOCKED}portsinfonow.com/Content/Home/Sports/Sprites/Sprite_Sports_V1.png
- http://search.{BLOCKED}portsinfonow.com/Content/Images/quicklinkIcons/amazonlogo.png
- http://search.{BLOCKED}portsinfonow.com/favicon.ico
SOLUTION
9.850
13.938.08
31 Jan 2018
13.939.00
01 Feb 2018
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
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 3
Reset the Internet Explorer Home and Search pages
Step 4
Scan your computer with your Trend Micro product to delete files detected as TROJ_STARTPAGE.WERX. 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 the following Trend Micro Support pages for more information:
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