BKDR_BLADABINDI.SMJC4
Trojan.MSIL.Bladabindi (IKARUS); Backdoor:MSIL/Bladabindi.B (MICROSOFT)
Windows
Threat Type: Backdoor
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
This Backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It executes commands from a remote malicious user, effectively compromising the affected system.
TECHNICAL DETAILS
Arrival Details
This Backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Installation
This Backdoor adds the following mutexes to ensure that only one of its copies runs at any one time:
- Client.exe
Autostart Technique
This Backdoor adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Client.exe = "{Malware Path}\{Malware Filename}.exe" ..
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
Client.exe = "{Malware Path}\{Malware Filename}.exe" ..
Other System Modifications
This Backdoor adds the following registry entries:
HKEY_USERS\S-1-5-21-2019512041-4230814187-3178073052-1000
di = !
HKEY_CURRENT_USER\Environment
SEE_MASK_NOZONECHECKS = 1
HKEY_CURRENT_USER\Software\Client.exe
[kl] = {Stolen Information}
It modifies the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
Advanced
Hidden = 0
(Note: The default value data of the said registry entry is 1.)
Backdoor Routine
This Backdoor executes the following commands from a remote malicious user:
- Retrieve and Delete Google Chrome cookies and login data
- Terminate Google chrome process
- Block Webpages
- Download Files
- Execute Files
- Update Files
- Execute Ransomware Behavior
- Encrypt Files
- Decrypt Files
- Create Ransomnote
- Start and Stop Slowloris Attack
- Start and Stop ARME Attack
- Change Desktop Wallpaper
- Install and Execute Plugins
- Take Screenshot of user's screen
- Save Images
- Search Wallets installed on the affected machine
- Turn off and on the affected machine's monitor
- Activates the Text-to-Speech application
- Enable and Disable Task Manager
- Enable and Disable CMD
- Restart the affected machine
- Shutdown the affected machine
- Give Administrative Privileges
- Delete Event Logs
- Show and Hide Taskbar
- Clear Clipboard Data
- Copy Clipboard Data
- Torrent Seed
- List Running Processes
- Terminate Processes
It connects to the following URL(s) to send and receive commands from a remote malicious user:
- http://FESTIVALDEAMOR.{BLOCKED}VM.COM
Information Theft
This Backdoor gathers the following data:
- Keystrokes
- AV Product Information
- Active Windows
- CPU Information
- Capture Device Information
- System Drive Volume Serial Number
- Date of Infection
- Operating System
- Operating System Service Pack
- System Type (32-bit or 64-bit)
- Wallets
- BitcoinCore
- Bitcoin.com Wallet
- Electrum
- Machine Name
- Username
- Torrent Software
- uTorrent
- BitTorrent
Other Details
This Backdoor adds the following registry keys:
HKEY_CURRENT_USER\Software\Client.exe
It does the following:
- This Backdoor requires to be ran with administrative privileges to proceed with its intended malicious routine
SOLUTION
Step 1
Trend Micro Predictive Machine Learning detects and blocks malware at the first sign of its existence, before it executes on your system. When enabled, your Trend Micro product detects this malware under the following machine learning name:
- Troj.Win32.TRX.XXPE50FFF042
Step 2
Before doing any scans, Windows 7, Windows 8, Windows 8.1, and Windows 10 users must disable System Restore to allow full scanning of their computers.
Step 3
Note that not all files, folders, and registry keys and entries are installed on your computer during this malware's/spyware's/grayware's execution. This may be due to incomplete installation or other operating system conditions. If you do not find the same files/folders/registry information, please proceed to the next step.
Step 4
Restart in Safe Mode
Step 5
Restore this modified registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
- From: Hidden = 0
To: Hidden = 1
- From: Hidden = 0
Step 6
Delete this registry key
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- HKEY_CURRENT_USER\Software\Client.exe
Step 7
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_USERS\S-1-5-21-2019512041-4230814187-3178073052-1000
- di = !
- di = !
- In HKEY_CURRENT_USER\Environment
- SEE_MASK_NOZONECHECKS = 1
- SEE_MASK_NOZONECHECKS = 1
- In HKEY_CURRENT_USER\Software\Client.exe
- [kl] = {Stolen Information}
- [kl] = {Stolen Information}
Step 8
Restart in normal mode and scan your computer with your Trend Micro product for files detected as BKDR_BLADABINDI.SMJC4. If the detected files have already been cleaned, deleted, or quarantined by your Trend Micro product, no further step is required. You may opt to simply delete the quarantined files. Please check this Knowledge Base page for more information.
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