TSPY_RAWPOS.ACR
Windows
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.
TECHNICAL DETAILS
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 component file(s):
- %User Temp%\p2xtmp-{number}\auto\B\B.dll
- %User Temp%\p2xtmp-{number}\auto\Cwd\Cwd.dll
- %User Temp%\p2xtmp-{number}\auto\Data\Dumper\Dumper.dll
- %User Temp%\p2xtmp-{number}\auto\Digest\MD5\MD5.dll
- %User Temp%\p2xtmp-{number}\auto\Fcntl\Fcntl.dll
- %User Temp%\p2xtmp-{number}\auto\IO\IO.dll
- %User Temp%\p2xtmp-{number}\auto\List\Util\Util.dll
- %User Temp%\p2xtmp-{number}\auto\MIME\Base64\Base64.dll
- %User Temp%\p2xtmp-{number}\auto\POSIX\POSIX.dll
- %User Temp%\p2xtmp-{number}\auto\Win32API\File\File.dll
- %User Temp%\p2xtmp-{number}\auto\Win32API\Registry\Registry.dll
- %User Temp%\p2xtmp-{number}\auto\Win32\API\API.dll
- %User Temp%\p2xtmp-{number}\auto\Win32\Process\List\List.dll
- %User Temp%\p2xtmp-{number}\auto\Win32\Process\Process.dll
- %User Temp%\p2xtmp-{number}\auto\Win32\Win32.dll
- %User Temp%\p2xtmp-{number}\auto\mro\mro.dll
- %User Temp%\p2xtmp-{number}\auto\re\re.dll
- %User Temp%\p2xtmp-{number}\p2x{number}.dll
- %User Temp%\p2xtmp-{number}\auto\Win32\OLE\OLE.dll
- %User Temp%\p2xtmp-{number}\auto\Win32\Console\Console.dll
(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.)
It creates the following folders:
- {Malware Path}\memdump - contains memory dumps
- %User Temp%\p2xtmp-{number}
- %User Temp%\p2xtmp-{number}\auto
- %User Temp%\p2xtmp-{number}\auto\B
- %User Temp%\p2xtmp-{number}\auto\Cwd
- %User Temp%\p2xtmp-{number}\auto\Data
- %User Temp%\p2xtmp-{number}\auto\Data\Dumper
- %User Temp%\p2xtmp-{number}\auto\Digest
- %User Temp%\p2xtmp-{number}\auto\Digest\MD5
- %User Temp%\p2xtmp-{number}\auto\Fcntl
- %User Temp%\p2xtmp-{number}\auto\IO
- %User Temp%\p2xtmp-{number}\auto\List
- %User Temp%\p2xtmp-{number}\auto\List\Util
- %User Temp%\p2xtmp-{number}\auto\MIME
- %User Temp%\p2xtmp-{number}\auto\MIME\Base64
- %User Temp%\p2xtmp-{number}\auto\POSIX
- %User Temp%\p2xtmp-{number}\auto\Win32
- %User Temp%\p2xtmp-{number}\auto\Win32API
- %User Temp%\p2xtmp-{number}\auto\Win32API\File
- %User Temp%\p2xtmp-{number}\auto\Win32API\Registry
- %User Temp%\p2xtmp-{number}\auto\Win32\API
- %User Temp%\p2xtmp-{number}\auto\Win32\Console
- %User Temp%\p2xtmp-{number}\auto\Win32\OLE
- %User Temp%\p2xtmp-{number}\auto\Win32\Process
- %User Temp%\p2xtmp-{number}\auto\Win32\Process\List
- %User Temp%\p2xtmp-{number}\auto\mro
- %User Temp%\p2xtmp-{number}\auto\re
(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.)
Other Details
This spyware does the following:
- It has the following components:
- msdtv.exe - (extract and encrypt) detected as TSPY_RAWPOS.ACR
- sstpsvc.exe - (memory dumper) detected as TSPY_RAWPOS.ACR
- tskman.exe - (service installer) detected as TSPY_RAWPOS.ACR
- This malware is capable of searching for track data on the affected system (PoS machine). Once executed, it dumps the memory into a file in the created folder "memdump". It then reads the file to search for track data. If a track data is found, it will write the output to the file "dxfs32.dll". It also encrypts the stolen data using a XOR encryption.
- It uses the following regular expression to search for track 1 and track 2 data on a memory dump:
- track1 - ((b|B)(([0-9]{13,16})|([0-9]|\s){13,25})\^[A-Za-z\s0-9]{0,30}\/[A-Za-z\s0-9]{0,30}\^(0[7-9]|1[0-5])((0[1-9])|(1[0-2]))([0-9]|\s){3,50})
- track2 - ([0-9]{15,16}(D|=)(0[7-9]|1[0-5])((0[1-9])|(1[0-2]))[0-9]{8,30})
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
Identify and terminate files detected as TSPY_RAWPOS.ACR
- 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 3
Search and delete these folders
Step 4
Scan your computer with your Trend Micro product to delete files detected as TSPY_RAWPOS.ACR. 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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