TSPY_SWYSN.EQ
W32/Swisyn.AAAB!tr (Fortinet),
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Spyware
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
This spyware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It executes the files it drops, prompting the affected system to exhibit the malicious routines they contain.
However, as of this writing, the said sites are inaccessible.
TECHNICAL DETAILS
130,048 bytes
EXE
No
04 Feb 2011
Arrival Details
This spyware 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 spyware drops the following non-malicious file:
- %System%\MSWINSCK.OCX
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
Other System Modifications
This spyware adds the following registry entries as part of its installation routine:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Explorer\
Advanced\Folder\Hidden\
NOHIDORSYS
CheckedValue = "0"
Dropping Routine
This spyware drops the following files:
- %Windows%\Fonts\services.exe
(Note: %Windows% is the Windows folder, which is usually C:\Windows.)
It executes the files it drops, prompting the affected system to exhibit the malicious routines they contain.
Other Details
This spyware connects to the following possibly malicious URL:
- {BLOCKED}.net
However, as of this writing, the said sites are inaccessible.
SOLUTION
9.300
7.810.15
04 Feb 2011
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 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\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\NOHIDORSYS
- CheckedValue = "0"
- CheckedValue = "0"
Step 3
Search and delete these components
Step 4
Scan your computer with your Trend Micro product to delete files detected as TSPY_SWYSN.EQ. 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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