BKDR_FARFLI.XUZH
Trojan:Win32/Beaugrit.gen!AAA (Microsoft); Trojan.Win32.Agentb.apdf (Kaspersky); Trojan.Win32.Fusing.cf (v) (Sunbelt); Trojan horse Agent4.BSDW (AVG)
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: 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
45,056 bytes
EXE
Yes
18 Aug 2014
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 drops the following copies of itself into the affected system:
- %Windows%\Terms.EXE
(Note: %Windows% is the Windows folder, which is usually C:\Windows.)
Autostart Technique
This backdoor registers as a system service to ensure its automatic execution at every system startup by adding the following registry keys:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\SuperProServer
Other System Modifications
This backdoor adds the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SuperProServer
ConnectGroup = "ĬÈÏ·Ö×é"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SuperProServer
MarkTime = "2014-07-31 19:10"
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\SuperProServer
Description = "Sentinel SuperPro Server"
Other Details
This backdoor connects to the following possibly malicious URL:
- {BLOCKED}7.14.114
This report is generated via an automated analysis system.
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 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
- SuperProServer
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_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SuperProServer
- ConnectGroup = "ĬÈÏ·Ö×é"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SuperProServer
- MarkTime = "2014-07-31 19:10"
- In HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\SuperProServer
- Description = "Sentinel SuperPro Server"
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as BKDR_FARFLI.XUZH. 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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