TSPY_INFOSTL.XXT
TrojanSpy:Win32/Elvatka.A (Microsoft)
Windows
Threat Type: Spyware
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Downloaded from the Internet
This spyware may be dropped by other malware.
It retrieves specific information from the affected system.
TECHNICAL DETAILS
172,032 bytes
EXE
No
08 Nov 2014
Connects to URLs/IPs
Arrival Details
This spyware may be dropped by the following malware:
- TROJ_MDROP.XXTWZ
Installation
This spyware drops the following component file(s):
- %User Temp%\{8 random alphanumeric characters}.dll - also detected as TSPY_INFOSTL.XXT
(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
Autostart Technique
This spyware drops the following file(s) in the Windows User Startup folder to enable its automatic execution at every system startup:
- %User Startup%\AdobeSrv.lnk
(Note: %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.)
Information Theft
This spyware retrieves the following information from the affected system:
- Current user name
- Processor information
- Operating system version
- Host name
- IP address
- Current system time
Stolen Information
This spyware sends the gathered information via HTTP POST to the following URL:
- {BLOCKED}u.{BLOCKED}star.pw:443
SOLUTION
9.700
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
Remove the malware/grayware file dropped/downloaded by TSPY_INFOSTL.XXT. (Note: Please skip this step if the threat(s) listed below have already been removed.)
- TROJ_MDROP.XXTWZ
Step 3
Identify and terminate files detected as TSPY_INFOSTL.XXT
- Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
Step 4
Search and delete these files
- %User Startup%\AdobeSrv.lnk
Step 5
Scan your computer with your Trend Micro product to delete files detected as TSPY_INFOSTL.XXT. 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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