TSPY_FINDPOS.A
Infostealer.Posfind (Symantec); Trojan-Ransom.Win32.Foreign.lmco (Kaspersky); Backdoor.Bot (Malwarebytes)
Windows
Threat Type: Spyware
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
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
248,320 bytes
EXE
Yes
11 Feb 2015
Compromises system security, Steals information
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 copies of itself into the affected system and executes them:
- %System%\{malware generated name}.exe
- %User Profile%\{malware generated name}.exe (executed only if the first fails)
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %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.)
It adds the following mutexes to ensure that only one of its copies runs at any one time:
- WIN_{16 hex values}
Autostart Technique
This spyware adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\Software\Microsoft\
Windows\CurrentVersion\Run
{malware generated name} = "%System%\{malware generated name}.exe"
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
{malware generated name} = "%User Profile%\{malware generated name}.exe"
Information Theft
This spyware gathers the following data:
- Hostname
- Username
- Microsoft Windows Version
- Track data
- Keystroke logs
Stolen Information
This spyware sends the gathered information via HTTP POST to the following URL:
- http://{BLOCKED}ortgot.ru/pes1/viewtopic.php
- http://{BLOCKED}arbab.ru/pes1/viewtopic.php
- http://{BLOCKED}nhersning.com/pes1/viewtopic.php
Other Details
This spyware deletes itself after execution.
NOTES:
The malware generated name is based on the following system information:
- Volume Serial Number
- Microsoft Windows Product ID
- SystemBiosdate
- VideoBiosdate
- CPU Identifier
It performs memory scraping on all processes except for processes with the string 'NT AUTHORITY' registered as process owner to check for track data and posts it to the C&C server.
It posts the following information to the C&C server:
- oprat={constant}&uid={unique identifier of victim}&uinfo={Base64-encoded system information (Hostname @ Username)}&win={Microsoft Windows version}&vers={Malware version}&data={encrypted track data}&logs={encrypted keystroke logs}
SOLUTION
9.750
11.552.02
21 Mar 2015
11.553.00
22 Mar 2015
Step 1
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 2
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 3
Restart in Safe Mode
Step 4
Delete this registry key
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\Run
- {malware generated name} = "%System%\{malware generated name}.exe"
- {malware generated name} = "%System%\{malware generated name}.exe"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- {malware generated name} = "%User Profile%\{malware generated name}.exe"
- {malware generated name} = "%User Profile%\{malware generated name}.exe"
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_FINDPOS.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.
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