Content
Generic BackDoor.dr
- Type
- Trojan
- SubType
- Dropper
- Discovery Date
- 04/07/2004
- Length
- Varies
- Minimum DAT
- 4273 (06/25/2003)
- Updated DAT
- 6451 (08/27/2011)
- Minimum Engine
- 5.1.00
- Description Added
- 04/15/2004
- Description Modified
- 02/16/2010 4:06 AM (PT)
Tab Navigation
Characteristics
-- Update February 16, 2010 --
When executed, the Trojan copies itself into the following location
- %WinDir%\system32\A5479E\F666FA.EXE [Detected as Generic Backdoor.dr]
And drops the following files
- %WinDir%\system32\A8D5DA\dp1.fne
- %WinDir%\system32\A8D5DA\eAPI.fne
- %WinDir%\system32\A8D5DA\HtmlView.fne
- %WinDir%\system32\A8D5DA\internet.fne
- %WinDir%\system32\A8D5DA\krnln.fnr
- %WinDir%\system32\2260A0\0349d9.txt
- %Temp%\E_N4\dp1.fne
- %Temp%\E_N4\eAPI.fne
- %Temp%\E_N4\HtmlView.fne
- %Temp%\E_N4\internet.fne
- %Temp%\E_N4\krnln.fnr
The Trojan adds the following registry entry to execute itself in every reboot:
- [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
“E58E7D” = "%WinDir%\system32\A5479E\F666FA.EXE"
The Trojan connects to the IP address 220.181.[removed].175 through a remote port 80.
[Where %WinDir% is the Windows Directory - for example C:\Windows and %Temp% is C:\Documents and Settings\Administrator\Local Settings\Temp]
-- Update June 12, 2005 --
The 4511 DAT files contain an incorrect Generic Backdoor.dr identification on certain Inno Setup installer files. This detection was corrected in the 4512 DAT release.
For further information, please refer to the Generic Backdoor description.
Symptoms
- Presence of above mentioned files and registry keys
- Presence unexpected network connection to the above mentioned IP Address.
Method of Infection
Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, e-mail, etc.
Removal
All Users:
Please use the following instructions for all supported versions of Windows to remove threats and other potential risks:
1.Disable System Restore (Windows ME/XP only).
2.Update to current engine and DAT files for detection and removal.
3.Run a complete system scan.
Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).
General repair may be unsuccessful in some instances. If this occurs, please submit a sample for further evaluation.
Variants
Variants
N/A
All Information
Overview -
This is a trojan detection. Unlike viruses, trojans do not self-replicate. They are spread manually, often under the premise that they are beneficial or wanted. The most common installation methods involve system or security exploitation, and unsuspecting users manually executing unknown programs. Distribution channels include email, malicious or hacked web pages, Internet Relay Chat (IRC), peer-to-peer networks, etc.
File Information
- MD5 - 96C1389D97ED9F260D89685A6950847B
- SHA - D38BC109FBCF744809960220E13AE2EB212F5420
- File Size - 1,243,968 bytes
Aliases
- Kaspersky - Trojan-Downloader.Win32.FlyStudio.hk
- Symantec - Packed.Generic.244
- Ikarus - Trojan.Win32.FlyStudio
- Norman - W32/Lineage.CTVY
Characteristics
Characteristics -
-- Update February 16, 2010 --
When executed, the Trojan copies itself into the following location
- %WinDir%\system32\A5479E\F666FA.EXE [Detected as Generic Backdoor.dr]
And drops the following files
- %WinDir%\system32\A8D5DA\dp1.fne
- %WinDir%\system32\A8D5DA\eAPI.fne
- %WinDir%\system32\A8D5DA\HtmlView.fne
- %WinDir%\system32\A8D5DA\internet.fne
- %WinDir%\system32\A8D5DA\krnln.fnr
- %WinDir%\system32\2260A0\0349d9.txt
- %Temp%\E_N4\dp1.fne
- %Temp%\E_N4\eAPI.fne
- %Temp%\E_N4\HtmlView.fne
- %Temp%\E_N4\internet.fne
- %Temp%\E_N4\krnln.fnr
The Trojan adds the following registry entry to execute itself in every reboot:
- [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
“E58E7D” = "%WinDir%\system32\A5479E\F666FA.EXE"
The Trojan connects to the IP address 220.181.[removed].175 through a remote port 80.
[Where %WinDir% is the Windows Directory - for example C:\Windows and %Temp% is C:\Documents and Settings\Administrator\Local Settings\Temp]
-- Update June 12, 2005 --
The 4511 DAT files contain an incorrect Generic Backdoor.dr identification on certain Inno Setup installer files. This detection was corrected in the 4512 DAT release.
For further information, please refer to the Generic Backdoor description.
Symptoms
Symptoms -
- Presence of above mentioned files and registry keys
- Presence unexpected network connection to the above mentioned IP Address.
Method of Infection
Method of Infection -
Trojans do not self-replicate. They are spread manually, often under the premise that the executable is something beneficial. Distribution channels include IRC, peer-to-peer networks, newsgroup postings, e-mail, etc.
Removal -
Removal -
All Users:
Please use the following instructions for all supported versions of Windows to remove threats and other potential risks:
1.Disable System Restore (Windows ME/XP only).
2.Update to current engine and DAT files for detection and removal.
3.Run a complete system scan.
Modifications made to the system Registry and/or INI files for the purposes of hooking system startup, will be successfully removed if cleaning with the recommended engine and DAT combination (or higher).
General repair may be unsuccessful in some instances. If this occurs, please submit a sample for further evaluation.
Variants
Variants -
N/A