BKDR_FARFLI.SMM
BackDoor-EZQ.d (McAfee); Trojan.Dropper (Symantec); Trojan.Win32.Generic!BT (Sunbelt); Trojan horse BackDoor.Generic13.AIQZ (AVG)
Windows 2000, Windows XP, Windows Server 2003
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Backdoor
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This backdoor 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
139,264 bytes
EXE
No
17 May 2013
Arrival Details
This backdoor 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 backdoor creates the following folders:
- %Program Files%\Microsoft Explorer
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).)
Other System Modifications
This backdoor deletes the following files:
- %Temp%\Oath.ini
(Note: %Temp% is the Windows Temporary folder, which is usually C:\Windows\Temp.)
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\Microsodfft .Net Framdfsdork COM+ Supportfs
FailureActions = "{random values}"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\Microsodfft .Net Framdfsdork COM+ Supportfs
Description = "Midfsssoft .NET and Windfows XP COM+ Integrafstion with SOAP"
Dropping Routine
This backdoor drops the following files:
- %Temp%\Oath.exe
- %Program Files%\Microsoft Explorer\svmssc.exe
- %System Root%\SystemTemp
(Note: %Temp% is the Windows Temporary folder, which is usually C:\Windows\Temp.. %Program Files% is the default Program Files folder, usually C:\Program Files in Windows 2000, Server 2003, and XP (32-bit), Vista (32-bit), and 7 (32-bit), or C:\Program Files (x86) in Windows XP (64-bit), Vista (64-bit), and 7 (64-bit).. %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)
This report is generated via an automated analysis system.
SOLUTION
9.300
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
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_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Microsodfft .Net Framdfsdork COM+ Supportfs
- FailureActions = "{random values}"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\Microsodfft .Net Framdfsdork COM+ Supportfs
- Description = "Midfsssoft .NET and Windfows XP COM+ Integrafstion with SOAP"
Step 3
Search and delete these components
- %Temp%\Oath.exe
- %Program Files%\Microsoft Explorer\svmssc.exe
- %System Root%\SystemTemp
Step 4
Search and delete this folder
- %Program Files%\Microsoft Explorer
Step 5
Scan your computer with your Trend Micro product to delete files detected as BKDR_FARFLI.SMM. 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 6
Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.
- %Temp%\Oath.ini
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