TSPY_MA.8A29C155
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Spyware
Destructiveness: No
Encrypted:
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 deletes itself after execution.
TECHNICAL DETAILS
56,879 bytes
EXE
No
29 Mar 2014
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.
Other System Modifications
This spyware deletes the following files:
- %User Profile%\Application Data\ofn1.tmp
- %User Temp%\byd4.tmp
- %User Temp%\appE.tmp
- %User Temp%\app12.tmp
- %User Temp%\app20.tmp
- %User Temp%\app1E.tmp
(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.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)
It modifies the following registry entries:
HKEY_CURRENT_USER\Control Panel\Desktop
WaitToKillAppTimeout = "271"
(Note: The default value data of the said registry entry is 20000.)
Dropping Routine
This spyware drops the following files:
- %User Temp%\app7.tmp
- %User Temp%\appE.tmp.vbs
- %User Startup%\conime.exe
- %User Temp%\app1B.tmp
- %User Profile%\APPLIC~1\ayagnt.dll
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.. %User Startup% is the current user's Startup folder, which is usually C:\Windows\Profiles\{user name}\Start Menu\Programs\Startup on Windows 98 and ME, C:\WINNT\Profiles\{user name}\Start Menu\Programs\Startup on Windows NT, and C:\Documents and Settings\{User name}\Start Menu\Programs\Startup.. %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.)
Other Details
This spyware connects to the following possibly malicious URL:
- Http://www.{BLOCKED}e.com
- http://blog.{BLOCKED}e.net/adisign357/blog
- http://{BLOCKED}6.70.147/LbUuEtSmUfUaCgRvHuXlQyOx.jsp?{random characters}
- http://{BLOCKED}6.70.147/WcAuIwOhCpYdKuZxBcEhPcQm.jsp?{random characters}
- http://{BLOCKED}6.70.147/CvFpQcNjVkWjKtUyXsHlRtOd.jsp?{random characters}
It deletes itself after execution.
This report is generated via an automated analysis system.
SOLUTION
9.300
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
Restore these modified registry values
Important:Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this only if you know how to or you can seek your system administrator's help. You may also check out this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Control Panel\Desktop
- From: WaitToKillAppTimeout = "271"
To: WaitToKillAppTimeout = ""20000""
- From: WaitToKillAppTimeout = "271"
Step 3
Search and delete these components
- %User Temp%\app7.tmp
- %User Temp%\appE.tmp.vbs
- %User Startup%\conime.exe
- %User Temp%\app1B.tmp
- %User Profile%\APPLIC~1\ayagnt.dll
Step 4
Scan your computer with your Trend Micro product to delete files detected as TSPY_MA.8A29C155. 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.
Step 5
Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.
- %User Profile%\Application Data\ofn1.tmp
- %User Temp%\byd4.tmp
- %User Temp%\appE.tmp
- %User Temp%\app12.tmp
- %User Temp%\app20.tmp
- %User Temp%\app1E.tmp
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