PUA_SquareNet
Trojan.Gen.2 (Symantec); TrackCash (fs) (Sunbelt)
Windows
![](/vinfo/imgFiles/legend.jpg)
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.
TECHNICAL DETAILS
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.
Other System Modifications
This Trojan adds the following registry keys:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\{9CD865CA-C319-4BF9-8577-EA6EC7F36AE7}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\UpdaterService.EXE
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{DCEE70C6-FA43-4B67-A889-80AF260D2435}
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{DCEE70C6-FA43-4B67-A889-80AF260D2435}\1.0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{DCEE70C6-FA43-4B67-A889-80AF260D2435}\1.0\
FLAGS
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{DCEE70C6-FA43-4B67-A889-80AF260D2435}\1.0\
0
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{DCEE70C6-FA43-4B67-A889-80AF260D2435}\1.0\
0\win32
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
TypeLib\{DCEE70C6-FA43-4B67-A889-80AF260D2435}\1.0\
HELPDIR
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\UpdaterService.EXE
AppID = "{9CD865CA-C319-4BF9-8577-EA6EC7F36AE7}"
HKEY_LOCAL_MACHINE\SOFTWARE\Classes\
AppID\{9CD865CA-C319-4BF9-8577-EA6EC7F36AE7}
LocalService = "WinDevSrv"
Dropping Routine
This Trojan drops the following files:
- %User Profile%\UpdateServ\UpdaterService.exe
- %User Profile%\UpdateServ\download.dat
- %User Profile%\UpdateCommon\updaterinfo
(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.)
This report is generated via an automated analysis system.
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
Delete this registry key
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\AppID
- {9CD865CA-C319-4BF9-8577-EA6EC7F36AE7}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID
- UpdaterService.EXE
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib
- {DCEE70C6-FA43-4B67-A889-80AF260D2435}
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{DCEE70C6-FA43-4B67-A889-80AF260D2435}
- 1.0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{DCEE70C6-FA43-4B67-A889-80AF260D2435}\1.0
- FLAGS
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{DCEE70C6-FA43-4B67-A889-80AF260D2435}\1.0
- 0
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{DCEE70C6-FA43-4B67-A889-80AF260D2435}\1.0\0
- win32
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\TypeLib\{DCEE70C6-FA43-4B67-A889-80AF260D2435}\1.0
- HELPDIR
Step 3
Delete this registry value
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\AppID\UpdaterService.EXE
- AppID = "{9CD865CA-C319-4BF9-8577-EA6EC7F36AE7}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Classes\AppID\{9CD865CA-C319-4BF9-8577-EA6EC7F36AE7}
- LocalService = "WinDevSrv"
Step 4
Search and delete these components
- %User Profile%\UpdateServ\UpdaterService.exe
- %User Profile%\UpdateServ\download.dat
- %User Profile%\UpdateCommon\updaterinfo
Step 5
Scan your computer with your Trend Micro product to delete files detected as PUA_SquareNet. 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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