TROJ_KILSRV.EUIQ
Troj/AutoIt-OU (Sophos)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
This Trojan may be downloaded by other malware/grayware/spyware from remote sites. It may be dropped by other malware.
TECHNICAL DETAILS
Arrival Details
This Trojan may be downloaded by other malware/grayware/spyware from remote sites.
It may be dropped by other malware.
It may be downloaded from the following remote sites:
- {BLOCKED}.{BLOCKED}.196.130
Installation
This Trojan drops the following copies of itself into the affected system:
- %System%\gb_service.exe
(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)
It drops the following non-malicious file:
- %System%\GB_CATCHME.EXE - a copy of GMER Catchme tool
(Note: %System% is the Windows system folder, which is usually C:\Windows\System on Windows 98 and ME, C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)
Autostart Technique
This Trojan registers itself as a system service to ensure its automatic execution at every system startup by adding the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\AGBR5
ImagePath = "%System%\gb_service.exe"
NOTES:
This malware uninstalls a software called GbPlugin, a software that protects Brazilian bank customers when performing online banking transactions, from the affected system. It does the said routine by utilizing the GMER Catchme tool %System%\GB_CATCHME.EXE to delete GbPlugin related files and registries from a system. As a result, an infected user is left susceptible to banking malware that targets Brazilian banks.
(Note: %System% is the Windows system folder, which is usually C:\WINNT\System32 on Windows NT and 2000, or C:\Windows\System32 on Windows XP and Server 2003.)
SOLUTION
Step 1
Scan your computer with your Trend Micro product to delete files detected as TROJ_KILSRV.EUIQ. 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 2
For Windows XP and Windows Server 2003 users, before doing any scans, please make sure you disable System Restore to allow full scanning of your computer.
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\SYSTEM\CurrentControlSet\Services
- AGBR5
- AGBR5
Step 5
Search and delete this file
Step 6
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_KILSRV.EUIQ. 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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