TROJ_FARFLI.ADM
TrojanDropper:Win32/Farfli.E (Microsoft); PAK:PE_Patch.Enigma, Trojan-GameThief.Win32.Magania.ggmo (Kaspersky); Trojan.Win32.Generic!BT (Sunbelt); Packer.Enigma.A (FSecure)
Windows 2000, Windows XP, Windows Server 2003
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It deletes itself after execution.
TECHNICAL DETAILS
382,976 bytes
EXE
No
13 Jun 2012
Arrival Details
This Trojan 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 Trojan creates the following folders:
- %Program Files%\Ocya
(Note: %Program Files% is the default Program Files folder, usually C:\Program Files.)
Other System Modifications
This Trojan deletes the following files:
- %System%\syslog.dat
- %Program Files%\Ocya\Uiswcnejh.bmp
- %System Root%\Net-Temp.ini
(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.. %Program Files% is the default Program Files folder, usually C:\Program Files.. %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.)
It adds the following registry keys:
HKEY_CURRENT_USER\Software\Enigma Protector\
E7AE59A5201B6BE1-F4EAE9119329FB15
HKEY_LOCAL_MACHINE\SOFTWARE\EnigmaDevelopers
HKEY_CURRENT_USER\Software\Enigma Protector\
E7AE59A5201B6BE1-F4EAE9119329FB15\5528B27D9AF43619-65B9C66140D86A88
HKEY_LOCAL_MACHINE\SOFTWARE\330485584
HKEY_LOCAL_MACHINE\SOFTWARE\330485584\
Parameters
HKEY_LOCAL_MACHINE\SOFTWARE\50677271
It adds the following registry entries:
HKEY_CURRENT_USER\Software\Enigma Protector\
E7AE59A5201B6BE1-F4EAE9119329FB15\5528B27D9AF43619-65B9C66140D86A88
50DF30AD = "{random values}"
HKEY_CURRENT_USER\Software\Enigma Protector\
E7AE59A5201B6BE1-F4EAE9119329FB15
Options = "{random values}"
HKEY_LOCAL_MACHINE\SOFTWARE\330485584\
Parameters
ServiceDll = "%Program Files%\Ocya\Uiswcnejh.bmp"
HKEY_LOCAL_MACHINE\SOFTWARE\50677271
imgsvc = "StiSvc,Ytbydr Xdyntfyq Aib"
It modifies the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\ControlSet001\
Services\RemoteAccess\RouterManagers\
Ip
DLLPath = "%System Root%\2275300.dll"
(Note: The default value data of the said registry entry is {random values}.)
Dropping Routine
This Trojan drops the following files:
- %System Root%\2275300.dll
- %System Root%\NT_Path.jpg
- %Program Files%\Ocya\Uiswcnejh.bmp
(Note: %System Root% is the root folder, which is usually C:\. It is also where the operating system is located.. %Program Files% is the default Program Files folder, usually C:\Program Files.)
Other Details
This Trojan deletes itself after execution.
This report is generated via an automated analysis system.
SOLUTION
9.200
Step 1
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 2
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_CURRENT_USER\Software\Enigma Protector
- E7AE59A5201B6BE1-F4EAE9119329FB15
- In HKEY_LOCAL_MACHINE\SOFTWARE
- EnigmaDevelopers
- In HKEY_CURRENT_USER\Software\Enigma Protector\E7AE59A5201B6BE1-F4EAE9119329FB15
- 5528B27D9AF43619-65B9C66140D86A88
- In HKEY_LOCAL_MACHINE\SOFTWARE
- 330485584
- In HKEY_LOCAL_MACHINE\SOFTWARE\330485584
- Parameters
- In HKEY_LOCAL_MACHINE\SOFTWARE
- 50677271
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\Enigma Protector\E7AE59A5201B6BE1-F4EAE9119329FB15\5528B27D9AF43619-65B9C66140D86A88
- 50DF30AD = "{random values}"
- In HKEY_CURRENT_USER\Software\Enigma Protector\E7AE59A5201B6BE1-F4EAE9119329FB15
- Options = "{random values}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\330485584\Parameters
- ServiceDll = "%Program Files%\Ocya\Uiswcnejh.bmp"
- In HKEY_LOCAL_MACHINE\SOFTWARE\50677271
- imgsvc = "StiSvc,Ytbydr Xdyntfyq Aib"
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_LOCAL_MACHINE\SYSTEM\ControlSet001\Services\RemoteAccess\RouterManagers\Ip
- From: DLLPath = "%System Root%\2275300.dll"
To: DLLPath = ""{random values}""
- From: DLLPath = "%System Root%\2275300.dll"
Step 5
Search and delete these files
- %System Root%\2275300.dll
- %System Root%\NT_Path.jpg
- %Program Files%\Ocya\Uiswcnejh.bmp
Step 6
Search and delete this folder
- %Program Files%\Ocya
Step 7
Scan your computer with your Trend Micro product to delete files detected as TROJ_FARFLI.ADM. 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 8
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.
- %System%\syslog.dat
- %Program Files%\Ocya\Uiswcnejh.bmp
- %System Root%\Net-Temp.ini
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