TSPY_POSDAN.A
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Spyware
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Downloaded from the Internet
This spyware may arrive bundled with malware packages as a malware component. It arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It is capable of encrypting files in the affected system.
TECHNICAL DETAILS
3,557,376 bytes
EXE
Yes
28 Jul 2016
Displays graphics/image
Arrival Details
This spyware may arrive bundled with malware packages as a malware component.
It 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 copies of itself into the affected system:
- If "--setup {value}" parameter is used:
%Application Data%\Microsoft\Windows Services\{malware name}
(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming 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.)
Information Theft
This spyware accepts the following parameters:
- --disp
- --setup {value}
- --exec {value}
- --wait {value}
Other Details
This spyware does the following:
- It elevates its system privileges using process explorer.exe or winlogon.exe
- If "--exec {value}" parameter is used:
It encrypts files except when it contains the following strings found in its full path name:- *.dll
- *.inf
- *.msu
- *.msi
- ntuser.*
- *.scr
- *.exe
- boot.ini
- ntldr
- *.ocx
- System Volume Information
- Windows
- Boot
- *msdtssrvr*
- *firefox*
- *thunderbird*
- *store*
- *fdlauncher*
- *outlook*
- *chrome*
- *exfba*
- *ReportingServicesService*
- *inet*
- *iis*
- *exchange*
- *sql*
- *mad*
- Microsoft\Exchange Server
- Microsoft SQL Server
Where * - any string of zero or more characters - If "--disp" parameter is used:
- disables mouse input
- disables keyboard input
- displays the following image:
It is capable of encrypting files in the affected system.
SOLUTION
9.800
12.702.06
08 Aug 2016
12.703.00
09 Aug 2016
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
Scan your computer with your Trend Micro product to delete files detected as TSPY_POSDAN.A. 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 4
Restore encrypted files from backup.
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