McAfee > Theat Center > Virus Detail Page

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.

Aliases

• Generic.Botget.7D5A798B (BitDefender)

• Generic.Botget.7D5A798B (GData)

Characteristics

--Updated on November 23rd, 2011--

This is a generic detection for Downloader Trojans. Most common functionality involves running a batch file and downloads a malicious file into user system.

Upon execution, the Trojan connects to the following IP addresses and downloads a malicious file into the user system.

• 111.227.174.[Removed]
• 60.173.10.[Removed]
• 119.191.58.[Removed]
• 121.12.108.[Removed]

--------------------------------------------------

---- Updated on 20th July 2011 ----

Aliases –

• GData - BV:Ftp-AR
• Kaspersky - Trojan-Downloader.BAT.Small.f

This is a generic detection for Downloader Trojans. Most common functionality involves running a batch file to open ftp port and downloads a malicious file into user system.

Upon execution, the Trojan connects to the IP address 10.44.[removed] and downloads a malicious file into the user system.

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This is a generic detection for Downloader trojans. Most common functionality involves running a batch file to open ftp port and download a .sys file. This .sys file contains the web address from which the files will download, file names and the location to store them on local machine. The next section of this batch file then executes the file downloaded to %SYSTEM32% folder and similarly checks the presence of other dropped files and executes them. Following are the related web sites, files and IP address involved:

Websites/IP: heikeisnftp.3322.xrg (xxx.djtvv.cxm) / 218.10.17.11x
Batch file: Tcpyi.bat (Detected as BAT/Generic Downloader.et)
Sys file: tcpyi.sys (Detected as Generic Downloader.o)

The tcpyi.sys file downloads tcpsy2.exe and drops it as C:\WINDOWS\\system32\\tcpyi.exe. It also downloads mm.exe and stores it as C:\WINDOWS\\tcpsvrs1.exe.

The file names and the websites may vary with the samples. However, for further information, please refer to the Generic Downloader description.

Symptoms

These symptoms of this detection are the files, registry, and network communication referenced in the characteristics section.

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 .

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).

1. Please go to the Microsoft Recovery Console and restore a clean MBR.

On windows XP:

Insert the Windows XP CD into the CD-ROM drive and restart the computer.
When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
Select the Windows installation that is compromised and provide the administrator password
Issue 'fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.

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.

Aliases

• Generic.Botget.7D5A798B (BitDefender)

• Generic.Botget.7D5A798B (GData)

Characteristics

Characteristics -

--Updated on November 23rd, 2011--

This is a generic detection for Downloader Trojans. Most common functionality involves running a batch file and downloads a malicious file into user system.

Upon execution, the Trojan connects to the following IP addresses and downloads a malicious file into the user system.

• 111.227.174.[Removed]
• 60.173.10.[Removed]
• 119.191.58.[Removed]
• 121.12.108.[Removed]

--------------------------------------------------

---- Updated on 20th July 2011 ----

Aliases –

• GData - BV:Ftp-AR
• Kaspersky - Trojan-Downloader.BAT.Small.f

This is a generic detection for Downloader Trojans. Most common functionality involves running a batch file to open ftp port and downloads a malicious file into user system.

Upon execution, the Trojan connects to the IP address 10.44.[removed] and downloads a malicious file into the user system.

-----

This is a generic detection for Downloader trojans. Most common functionality involves running a batch file to open ftp port and download a .sys file. This .sys file contains the web address from which the files will download, file names and the location to store them on local machine. The next section of this batch file then executes the file downloaded to %SYSTEM32% folder and similarly checks the presence of other dropped files and executes them. Following are the related web sites, files and IP address involved:

Websites/IP: heikeisnftp.3322.xrg (xxx.djtvv.cxm) / 218.10.17.11x
Batch file: Tcpyi.bat (Detected as BAT/Generic Downloader.et)
Sys file: tcpyi.sys (Detected as Generic Downloader.o)

The tcpyi.sys file downloads tcpsy2.exe and drops it as C:\WINDOWS\\system32\\tcpyi.exe. It also downloads mm.exe and stores it as C:\WINDOWS\\tcpsvrs1.exe.

The file names and the websites may vary with the samples. However, for further information, please refer to the Generic Downloader description.

Symptoms

Symptoms -

These symptoms of this detection are the files, registry, and network communication referenced in the characteristics section.

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 .

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).

1. Please go to the Microsoft Recovery Console and restore a clean MBR.

On windows XP:

Insert the Windows XP CD into the CD-ROM drive and restart the computer.
When the "Welcome to Setup" screen appears, press R to start the Recovery Console.
Select the Windows installation that is compromised and provide the administrator password
Issue 'fixmbr' command to restore the Master Boot Record
Follow onscreen instructions
Reset and remove the CD from CD-ROM drive.

Variants

Variants -

N/A