The Saigon Trojan is a banking Trojan which is based on the popular Ursnif malware. It is being launched in a small-sized and carefully targeted attack campaign. Unlike other popular malware of this category, Saigon has been found to feature some really dangerous modules and it can have devastating consequences on the affected machine. Read our article to learn what the Saigon Trojan is capable of and to read instructions on safely removing active infection.
|Type||Trojan Malware, Banking Trojan|
|Short Description||A very dangerous banking Trojan capable of overtaking control of the machines.|
|Symptoms||The victims may notice performance issues and can get infected with other malware.|
|Distribution Method||Popular Malware Infection Strategies|
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|User Experience||Join Our Forum to Discuss Saigon Trojan.|
The Saigon Trojan is a new new release of the Ursnif malware family of banking threats. It is one of the most widely used malware which are used by different hacking groups in order to intrude onto networks and hosts. Banking Trojans are a popular method which rely on a modular engine seeking to manipulate web fields, stealing data and hijacking cryptocurrency wallets if such are found.
There are numerous ways that potential networks and computers can acquire a sample of the infection. One of the main methods rely on social engineering tactics that manipulate the victims into thinking that they are accessing a legitimate file or message from a company or service that they trust. This organization can be done via email messages or specific hacker-controlled sites that are hosted on similar sounding domain names and have forged contents.
The virus can be placed in all kinds of malware files — they can be either application installers or documents containing dangerous macros. They are easily uploaded to the hacker-controlled sites and may also be spread over file-sharing networks, a popular option is BitTorrent where both pirate and legitimate files can be found. Other sources of the banking Trojan can include the downloading of malware-infected files that can be either documents with dangerous macros or installers of famous programs. The hackers will specifically attempt to make such files as they are much more likely to be downloaded from websites and file-sharing networks (like BitTorrent).
The analysis also reveals that the Saigon Trojan samples are relatively low in number compared to other banking Trojans and Ursnif ones in particular. This gives experts reasons to believe that the threat has been used in carefully selected attacks against certain victims — they are probably fine-tuned to intrude onto their networks with well-prepared parameters in advance.
The Saigon Trojan is delivered onto the victim computers as a shellcode script which is placed in a Windows Registry string. It is accessed by a special PowerShell-based interface that is set as a scheduled task. All of this implies that the malware features advanced operating system manipulation capabilities. The main component itself is placed in a Windows DLL file that is responsible for all major operations.
One of the first actions that are run by the Saigon Trojan is the data retrieval process — it will create a detailed machine ID based upon the installed hardware components. The next step is to inject itself into a system process in an unusual way which may be a form of bypassing the system’s security scanners. The results from this would be the loading of two separate components into memory and interacting with them — a public key file which is used for securing data and transmitting it over to the hackers via a specially made network connection and a scripts execution PowerShell file. The Saigon Trojan has been confirmed to make changes to the Windows Registry which can have very serious consequences on the performance of the hosts. In addition the persistent installation of the malware code makes it significantly harder to remove — the PowerShell script will automatically edit out configuration files, settings and other areas in order to make sure that the virus code will be started every time the computer is powered on.
A distinct feature of the Saigon Trojan is its advanced network configuration settings. The security analysts note that unlike most other threats from this type the Saigon infections can fine-tune connection-related parameters. The information that is relayed from the hosts to the hacker-controlled servers will be sent alongside an initial header that may contain the following fields: bot version, botnet id, client id, request type, machine uptime report and “knock” period.
As a newer version of Ursnif Saigon also has additional functionality that the hackers have made:
- Removal — The Saigon Trojan will remove itself from the system including all associated scheduled tasks and Windows Registry keys.
Data Retrieval — This function can be used both to download files from remote locations, as well as updates the core of the virus or any of its associated contents.
- System Information Collection — This engine will automatically hijack information about the victim systems.
- Data Loading — This can be done either executable files or malware DLLs.
How to Remove Saigon Trojan
In order to fully remove Saigon from your computer system, we recommend that you follow the removal instructions underneath this article. If the first two manual removal steps do not seem to work and you still see Saigon or programs, related to it, we suggest what most security experts advise – to download and run a scan of your comptuer with a reputable anti-malware program. Downloading this software will not only save you some time, but will remove all of Saigon files and programs related to it and will protect your computer against such intrusive apps and malware in the future.
- Guide 1: How to Remove Saigon Trojan from Windows.
- Guide 2: Get rid of Saigon Trojan from Mac OS X.
- Guide 3: Remove Saigon Trojan from Google Chrome.
- Guide 4: Erase Saigon Trojan from Mozilla Firefox.
- Guide 5: Uninstall Saigon Trojan from Microsoft Edge.
- Guide 6: Remove Saigon Trojan from Safari.
- Guide 7: Eliminate Saigon Trojan from Internet Explorer.
How to Remove Saigon Trojan from Windows.
Step 1: Boot Your PC In Safe Mode to isolate and remove Saigon Trojan
Step 2: Uninstall Saigon Trojan and related software from Windows
Here is a method in few easy steps that should be able to uninstall most programs. No matter if you are using Windows 10, 8, 7, Vista or XP, those steps will get the job done. Dragging the program or its folder to the recycle bin can be a very bad decision. If you do that, bits and pieces of the program are left behind, and that can lead to unstable work of your PC, errors with the file type associations and other unpleasant activities. The proper way to get a program off your computer is to Uninstall it.
Step 3: Clean any registries, created by Saigon Trojan on your computer.
The usually targeted registries of Windows machines are the following:
You can access them by opening the Windows registry editor and deleting any values, created by Saigon Trojan there. This can happen by following the steps underneath:
Get rid of Saigon Trojan from Mac OS X.
Step 1: Uninstall Saigon Trojan and remove related files and objects
1. Hit the ⇧+⌘+U keys to open Utilities. Another way is to click on “Go” and then click “Utilities”, like the image below shows:
- Go to Finder.
- In the search bar type the name of the app that you want to remove.
- Above the search bar change the two drop down menus to “System Files” and “Are Included” so that you can see all of the files associated with the application you want to remove. Bear in mind that some of the files may not be related to the app so be very careful which files you delete.
- If all of the files are related, hold the ⌘+A buttons to select them and then drive them to “Trash”.
In case you cannot remove Saigon Trojan via Step 1 above:
In case you cannot find the virus files and objects in your Applications or other places we have shown above, you can manually look for them in the Libraries of your Mac. But before doing this, please read the disclaimer below:
You can repeat the same procedure with the following other Library directories:
Tip: ~ is there on purpose, because it leads to more LaunchAgents.
Step 2: Scan for and remove Saigon Trojan files from your Mac
When you are facing problems on your Mac as a result of unwanted scripts and programs such as Saigon Trojan, the recommended way of eliminating the threat is by using an anti-malware program. SpyHunter for Mac offers advanced security features along with other modules that will improve your Mac’s security and protect it in the future.
Remove Saigon Trojan from Google Chrome.
Step 1: Start Google Chrome and open the drop menu
Step 2: Move the cursor over "Tools" and then from the extended menu choose "Extensions"
Step 3: From the opened "Extensions" menu locate the unwanted extension and click on its "Remove" button.
Step 4: After the extension is removed, restart Google Chrome by closing it from the red "X" button at the top right corner and start it again.
Erase Saigon Trojan from Mozilla Firefox.
Step 1: Start Mozilla Firefox. Open the menu window
Step 2: Select the "Add-ons" icon from the menu.
Step 3: Select the unwanted extension and click "Remove"
Step 4: After the extension is removed, restart Mozilla Firefox by closing it from the red "X" button at the top right corner and start it again.
Uninstall Saigon Trojan from Microsoft Edge.
Step 1: Start Edge browser.
Step 2: Open the drop menu by clicking on the icon at the top right corner.
Step 3: From the drop menu select "Extensions".
Step 4: Choose the suspected malicious extension you want to remove and then click on the gear icon.
Step 5: Remove the malicious extension by scrolling down and then clicking on Uninstall.
Remove Saigon Trojan from Safari.
Step 1: Start the Safari app.
Step 2: After hovering your mouse cursor to the top of the screen, click on the Safari text to open its drop down menu.
Step 3: From the menu, click on "Preferences".
Step 4: After that, select the 'Extensions' Tab.
Step 5: Click once on the extension you want to remove.
Step 6: Click 'Uninstall'.
A pop-up window will appear asking for confirmation to uninstall the extension. Select 'Uninstall' again, and the Saigon Trojan will be removed.
Eliminate Saigon Trojan from Internet Explorer.
Step 1: Start Internet Explorer.
Step 2: Click on the gear icon labeled 'Tools' to open the drop menu and select 'Manage Add-ons'
Step 3: In the 'Manage Add-ons' window.
Step 4: Select the extension you want to remove and then click 'Disable'. A pop-up window will appear to inform you that you are about to disable the selected extension, and some more add-ons might be disabled as well. Leave all the boxes checked, and click 'Disable'.
Step 5: After the unwanted extension has been removed, restart Internet Explorer by closing it from the red 'X' button located at the top right corner and start it again.