MSIL/Bladabindi [Threat Name] go to Threat
MSIL/Bladabindi.AH [Threat Variant Name]
| Category | trojan,worm |
| Size | 32768 B |
| Aliases | Backdoor:MSIL/Bladabindi (Microsoft) |
Short description
MSIL/Bladabindi.AH is a worm that spreads via removable media. The worm serves as a backdoor. It can be controlled remotely.
Installation
When executed, the worm copies itself in some of the the following locations:
- %temp%\test.exe
- %startup%\f15f578e0867c14570c1595fb200a5f1.exe
In order to be executed on every system start, the worm sets the following Registry entries:
- [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]
- "f15f578e0867c14570c1595fb200a5f1" = "%malwarefilepath% .."
- [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Run]
- "f15f578e0867c14570c1595fb200a5f1" = "%malwarefilepath% .."
The worm executes the following command:
- netsh firewall add allowedprogram "%malwarefilepath%" "%malwarefilename%" ENABLE
The performed command creates an exception in the Windows Firewall.
Spreading on removable media
MSIL/Bladabindi.AH is a worm that spreads via removable media.
The worm copies itself into the root folders of removable drives using the following name:
- f15f578e0867c14570c1595fb200a5f1.exe
The worm modifies the following file:
- %removabledrive%\autorun.inf
The worm writes the following entries to the file:
- [autorun]
- open=%removabledrive%\f15f578e0867c14570c1595fb200a5f1.exe
- shellexecute=%removabledrive%
This file is usually dropped into the root folder of available drives in an attempt to autorun a malware executable when the infected drive is mounted.
Information stealing
MSIL/Bladabindi.AH is a worm that steals sensitive information.
The worm collects the following information:
- volume serial number
- computer name
- user name
- operating system version
The worm is able to log keystrokes.
The worm attempts to send gathered information to a remote machine.
Other information
The worm acquires data and commands from a remote computer or the Internet.
The worm contains a URL address. It tries to connect to the remote machine on port:
- 5522 (TCP)
It can execute the following operations:
- download files from a remote computer and/or the Internet
- run executable files
- create Registry entries
- delete Registry entries
- capture screenshots
- perform DoS/DDoS attacks
- update itself to a newer version
- uninstall itself
The worm keeps various information in the following Registry key:
- [HKEY_CURRENT_USER\software\f15f578e0867c14570c1595fb200a5f1]
Worm requires the Microsoft .NET framework to run.