TSPY_MIUREF.BS
Trojan:Win32/Miuref.A (Microsoft), Win32/Boaxxe.BE trojan (NOD32)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
Threat Type: Spyware
Destructiveness: No
Encrypted: Yes
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 does not have any propagation routine.
It does not have any backdoor routine.
It does not have any downloading capability.
It connects to certain websites to send and receive information. It requires its main component to successfully perform its intended routine. It creates an event. However, as of this writing, the said sites are inaccessible.
TECHNICAL DETAILS
65,536 bytes
EXE
Yes
31 Jan 2014
Steals information, Connects to URLs/IPs
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.
Autostart Technique
This spyware adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\RunOnce
{GUID} = "%User Temp%\jxqqtktj.dat"
Propagation
This spyware does not have any propagation routine.
Backdoor Routine
This spyware does not have any backdoor routine.
Download Routine
This spyware does not have any downloading capability.
Information Theft
This spyware gathers the following data:
- Computer Name/User Name
- Volume Information
- BIOS Information
- Video Controller
- System Enclosure
- Base Board
- Physical Media
- OS Version
- Network Adapter Configuration
- Running Processes
- Running Services
Other Details
Based on analysis of the codes, it has the following capabilities:
It connects to the following website to send and receive information:
- {BLOCKED}.{BLOCKED}.3.113
It requires the following additional components to properly run:
- {malware path}\setup.dat
- %User Temp%\jxqqtktj.dat
(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.)
It requires its main component to successfully perform its intended routine.
It creates the following event(s):
- {Computer Name}{Fullpath and Filename} special characters replaced with '_'
However, as of this writing, the said sites are inaccessible.
NOTES:
It does not have rootkit capabilities.
It does not exploit any vulnerability.
SOLUTION
9.700
10.596.04
09 Feb 2014
10.597.00
10 Feb 2014
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
Scan your computer with your Trend Micro product to delete files detected as TSPY_MIUREF.BS. 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 3
Restart in Safe Mode
Step 4
Delete this registry value
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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\RunOnce
- {GUID} = "%User Temp%\jxqqtktj.dat"
- {GUID} = "%User Temp%\jxqqtktj.dat"
Step 5
Search and delete this file
- {malware path}\setup.dat
- %User Temp%\jxqqtktj.dat
Step 6
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_MIUREF.BS. 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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