Win32/TrojanDownloader.Wauchos [Threat Name] go to Threat
Win32/TrojanDownloader.Wauchos.AF [Threat Variant Name]
| Category | trojan |
| Size | 138240 B |
| Aliases | Trojan.Win32.Munchies.a (Kaspersky) |
| Win32/Cryptor (AVG) |
Short description
Win32/TrojanDownloader.Wauchos.AF is a trojan which tries to download other malware from the Internet. It can be controlled remotely.
Installation
When executed, the trojan copies itself in some of the the following locations:
- %allusersprofile%\ms%variable1%.exe
In order to be executed on every system start, the trojan sets the following Registry entry:
- [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run]
- "%variable2%" = "%allusersprofile%\ms%variable1%.exe"
The trojan may set the following Registry entries:
- [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run]
- "%variable2%" = "%allusersprofile%\ms%variable1%.exe"
A string with variable content is used instead of %variable1-2% .
The trojan launches the following processes:
- %windir%\system32\msiexec.exe
- %windir%\SysWOW64\msiexec.exe
The trojan creates and runs a new thread with its own code within these running processes.
The following Registry entries are set:
- [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
- "TaskbarNoNotification" = 0
- "HideSCAHealth" = 0
- [HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
- "TaskbarNoNotification" = 0
- "HideSCAHealth" = 0
- [HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\Policies\System]
- "EnableLUA" = 0
The trojan creates and runs a new thread with its own program code within the following processes:
- explorer.exe
After the installation is complete, the trojan deletes the original executable file.
The trojan quits immediately if it detects a running process containing one of the following strings in its name:
- netmon.exe
- procmon.exe
- VMUSrvc.exe
- wireshark.exe
Information stealing
Win32/TrojanDownloader.Wauchos.AF is a trojan that steals sensitive information.
The trojan collects the following information:
- operating system version
- volume serial number
- the IP address of the router in the local network
The trojan attempts to send gathered information to a remote machine.
Other information
The trojan acquires data and commands from a remote computer or the Internet.
The trojan contains a list of (5) URLs. The HTTP protocol is used.
It can execute the following operations:
- download files from a remote computer and/or the Internet
- run executable files
- update itself to a newer version
- uninstall itself
- send gathered information
The following services are disabled:
- wscsvc
- SharedAccess
- MpsSvc
- WinDefend
- wuauserv
The trojan hooks the following Windows APIs:
- NtMapViewOfSection (ntdll.dll)
- GetAddrInfoW (ws2_32.dll)