Home Malware Programs Worms Worm:JS/Beutanni.A

Worm:JS/Beutanni.A

Posted: June 19, 2013

Threat Metric

Threat Level: 2/10
Infected PCs: 79
First Seen: June 19, 2013
OS(es) Affected: Windows

Worm:JS/Beutanni.A is a worm that proliferates by imitating Word documents, affecting HTML documents, removable and network drives, and when a PC user burns CDs on a targeted computer. Worm:JS/Beutanni.A makes numerous modifications to the infected computer, lowers security settings and disables specific system programs. When installed on the compromised PC, Worm:JS/Beutanni.A makes certain system changes. Worm:JS/Beutanni.A changes the extensions .DOC, .DOCX, or .RTF of the Word documents to .JSE. Worm:JS/Beutanni.A drops the malicious file 'annie.ani' in the root folder of all drives on the victimized computer, involving removable drives (such as USB thumb drives), fixed drives (hard disks), and network drives. Worm:JS/Beutanni.A also drops other potentially malicious files. Worm:JS/Beutanni.A also makes registry modifications on the corrupted PC.

Technical Details

File System Modifications

Tutorials: If you wish to learn how to remove malware components manually, you can read the tutorials on how to find malware, kill unwanted processes, remove malicious DLLs and delete other harmful files. Always be sure to back up your PC before making any changes.

The following files were created in the system:



%LOCALAPPDATA%\Microsoft\CD Burning\autorun.inf File name: %LOCALAPPDATA%\Microsoft\CD Burning\autorun.inf
Mime Type: unknown/inf
Group: Malware file
%LOCALAPPDATA%\Microsoft\CD Burning\annie.ani File name: %LOCALAPPDATA%\Microsoft\CD Burning\annie.ani
Mime Type: unknown/ani
Group: Malware file
%SystemDrive%\annie.ani File name: %SystemDrive%\annie.ani
Mime Type: unknown/ani
Group: Malware file
%SystemDrive%\beautiful_girl_part_1.lnk File name: %SystemDrive%\beautiful_girl_part_1.lnk
File type: Shortcut
Mime Type: unknown/lnk
Group: Malware file
%SystemDrive%\beautiful_girl_part_2.lnk File name: %SystemDrive%\beautiful_girl_part_2.lnk
File type: Shortcut
Mime Type: unknown/lnk
Group: Malware file
%SystemDrive%\beautiful_girl_part_3.lnk File name: %SystemDrive%\beautiful_girl_part_3.lnk
File type: Shortcut
Mime Type: unknown/lnk
Group: Malware file
%SystemDrive%\beautiful_girl_part_4.lnk File name: %SystemDrive%\beautiful_girl_part_4.lnk
File type: Shortcut
Mime Type: unknown/lnk
Group: Malware file
%SystemDrive%\beautiful_girl_part_5.lnk File name: %SystemDrive%\beautiful_girl_part_5.lnk
File type: Shortcut
Mime Type: unknown/lnk
Group: Malware file

Registry Modifications

The following newly produced Registry Values are:

HKEY..\..\{Value}HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System DisableTaskMgr = 0x00000001HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\System DisableRegistryTools = 0x00000001HKEY_CURRENT_USER\Software\Policies\Microsoft\MMC RestrictToPermittedSnapins = 0x00000001HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\attrib.exe Debugger = "cmd.exe /c rem"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\taskkill.exe Debugger = "cmd.exe /c rem"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\procexp.exe Debugger = "cmd.exe /c del /q /f"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\autoruns.exe Debugger = "cmd.exe /c del /q /f"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\RegAlyzer.exe Debugger = "cmd.exe /c del /q /f"HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\reg.exe Debugger = "cmd.exe /c rem"HKEY..\..\..\..{Subkeys}HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer NoFileAssociate 0x00000001HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\SystemRestore DisableSR = 0x00000001HKEY_LOCAL_MACHINE\SOFTWARE\Policies\Microsoft\Windows NT\SystemRestore DisableConfig = 0x00000001HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\HideFileExt UncheckedValue = 0x00000001HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\SuperHidden UncheckedValue = 0x00000001
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