TSPY_ZBOT.TKQ
HEUR:Trojan.Win32.Generic (Kaspersky)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Spyware
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Dropped by other malware, Downloaded from the Internet
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
294,455 bytes
EXE
Yes
02 Aug 2013
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:
- %Application Data%\{random}\{random filename}.exe
(Note: %Application Data% is the current user's Application Data folder, which is usually C:\Documents and Settings\{user name}\Application Data on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Roaming on Windows Vista and 7.)
It is injected into the following processes running in memory:
- explorer.exe
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\Run
{random numbers} = "%Application Data%\{random}\{random filename}.exe"
Other System Modifications
This spyware creates the following registry entry(ies) to bypass Windows Firewall:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SharedAccess\Parameters\
FirewallPolicy\StandardProfile\AuthorizedApplications\
List
%Windir%\explorer.exe = "%Windir%\explorer.exe:*:Enabled:Windows Explorer"
Information Theft
This spyware accesses the following site to download its configuration file:
- http://{BLOCKED}n.com/jck/cfg.bin
Its configuration file contains the following information:
- List of strings it will monitor usually related to banking
- URL to send stolen information
Other Details
The configuration file may contain URLs that it access to download an updated copy of itself and to send its gathered information.
SOLUTION
9.300
10.192.08
02 Aug 2013
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 and note files detected as TSPY_ZBOT.TKQ
Step 3
Restart in Safe Mode
Step 4
Search and delete files detected as TSPY_ZBOT.TKQ
Step 5
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\Run
- {random numbers} = "%Application Data%\{random}\{random filename}.exe"
- {random numbers} = "%Application Data%\{random}\{random filename}.exe"
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List
- %Windir%\explorer.exe = "%Windir%\explorer.exe:*:Enabled:Windows Explorer"
- %Windir%\explorer.exe = "%Windir%\explorer.exe:*:Enabled:Windows Explorer"
Step 6
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TSPY_ZBOT.TKQ. 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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