F-Secure
Tools
Virus:W32/IndoVirus.A
Summary
A program that secretly and maliciously integrates itself into program or data files. It spreads by integrating itself into more files each time the host program is run.
Disinfection
Allow F-Secure Anti-Virus to disinfect the relevant files.
For more general information on disinfection, please see Removal Instructions.
Additional Details
IndoVirus.A creates multiple copies of itself on all available drives.
IndoVirus.A attempts to disguise its executable file(s) as Windows folders. It changes the attributes of the original root folders to "hidden" and makes copies of its file using those folder names. It displays a folder-like icon and adjusts the Folder Options/View to "Do not show hidden files and folders" and sets "Hide extensions for known file types".
The result of this disguise are multiple files using folder-like icons lying in wait for the computer user to click on them
.Installation
Upon execution, the virus drops a copy of itself with a random name to the Windows and Windows System directories:
It also drops the following files, which are copies of the virus:
The malware uses a folder icon for its executable file, it drops a copy of itself using the name of all existing folders into the root directory of all drives in an infected machine and then it hides the original folders by adjusting their attributes. So, this malware pretends to be a valid folder on a hard drive.
Payload
The virus disables the Windows Task Manager and modifies the following Registry entries:
Registry Changes
The virus modifies the Registry so that a user can not change Windows Explorer's option to "Show all hidden files or folders". To check for this modification, it is enough to open Windows Explorer, click on Tools menu, and choose Folder Options. Then click on View tab. The "Show all hidden files or folders" option is not available after the infection. The following Registry entries are modified:
The virus creates the following startup Registry entries for its files:
Detection
F-Secure Anti-Virus detects this malware with the following updates:
[FSAV_Database_Version]
Version = 2007-01-21_01
IndoVirus.A attempts to disguise its executable file(s) as Windows folders. It changes the attributes of the original root folders to "hidden" and makes copies of its file using those folder names. It displays a folder-like icon and adjusts the Folder Options/View to "Do not show hidden files and folders" and sets "Hide extensions for known file types".
The result of this disguise are multiple files using folder-like icons lying in wait for the computer user to click on them
.Installation
Upon execution, the virus drops a copy of itself with a random name to the Windows and Windows System directories:
- %temp%\[random].bat
- %windir%\[random].scr
- %windir%\system32\[random].com
It also drops the following files, which are copies of the virus:
- %userprofile%\My Documents\My Music.exe
- %userprofile%\My Documents\My Pictures.exe
The malware uses a folder icon for its executable file, it drops a copy of itself using the name of all existing folders into the root directory of all drives in an infected machine and then it hides the original folders by adjusting their attributes. So, this malware pretends to be a valid folder on a hard drive.
Payload
The virus disables the Windows Task Manager and modifies the following Registry entries:
- HKLM\SOFTWARE\Classes\exefile
(default) = File Folder (the default value is "Application") - HKLM\SOFTWARE\Classes\batfile
(default) = Kabatia (the default value is "MS-DOS Batch file") - HKLM\SOFTWARE\Classes\comfile
(default) = Demi Allah Zul cinta kamu Anick (the default value is "MS-DOS Application")
Translation in English: Swear to God, Zul loves you Anick
Registry Changes
The virus modifies the Registry so that a user can not change Windows Explorer's option to "Show all hidden files or folders". To check for this modification, it is enough to open Windows Explorer, click on Tools menu, and choose Folder Options. Then click on View tab. The "Show all hidden files or folders" option is not available after the infection. The following Registry entries are modified:
- HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL
The "Type" is set to blank (the normal value of this is the string "radio") - HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
The "ShowSuperHidden" is set to 00000000 - HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\HideFileExt
The "UncheckedValue" is set to 00000001 - HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL
The "CheckedValue" is set to 00000000 - HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\SuperHidden
The "UncheckedValue" is set to 00000001
The virus creates the following startup Registry entries for its files:
- HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Zul_Cinta_Anick = C:\WINDOWS\system32\[random].com - HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Run
cintaku = C:\WINDOWS\[random].scr - HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Explorer.exe = C:\WINDOWS\[random].scr - HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell
Explorer.exe = C:\DOCUME~1\[user]\LOCALS~1\Temp\[random].bat
Detection
F-Secure Anti-Virus detects this malware with the following updates:
[FSAV_Database_Version]
Version = 2007-01-21_01