TROJ_AIBATUK.ER
W32/Aibatook.E!tr.spy(Fortinet), a variant of Win32/Spy.Aibatook.E trojan(Eset)
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: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan may be dropped by other malware.
TECHNICAL DETAILS
54,784 bytes
DLL
Yes
19 Feb 2014
Arrival Details
This Trojan may be dropped by other malware.
Installation
This Trojan drops the following files:
- %Application Data%\HTMLDATA
- %Application Data%\ini.ini
(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.)
Autostart Technique
This Trojan adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
TcpIpCfg = "Rundll32 "{malware path and file name}" MainThread"
Other System Modifications
This Trojan modifies the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
ProxyEnable = "0"
(Note: The default value data of the said registry entry is 1.)
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Internet Settings
ProxyOverride = "
(Note: The default value data of the said registry entry is <-loopback>;.)
Other Details
This Trojan connects to the following possibly malicious URL:
- http://www.{BLOCKED}888888.com/html.txt?{random 7 letters}
- http://www.{BLOCKED}888888.com/t.jpg?{random 7 letters}
SOLUTION
9.700
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
Restart in Safe Mode
Step 3
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
- TcpIpCfg = "Rundll32 "{malware path and file name}" MainThread"
- TcpIpCfg = "Rundll32 "{malware path and file name}" MainThread"
Step 4
Restore this modified 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\Internet Settings
- From: ProxyEnable = "0"
To: ProxyEnable = 1
- From: ProxyEnable = "0"
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings
- From: ProxyOverride = "<local>"
To: ProxyOverride = <-loopback>;
- From: ProxyOverride = "<local>"
Step 5
Search and delete this file
- %Application Data%\HTMLDATA
- %Application Data%\ini.ini
Step 6
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_AIBATUK.ER. 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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