BKDR_POISON.TUEH
Backdoor:Win32/Poison.E (Microsoft), probably a variant of Win32/Poison trojan (NOD32), W32/Poison.DNFC!tr.bdr (Fortinet), Backdoor.Win32.Poison (Ikarus)
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
Threat Type: Backdoor
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
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. It connects to a website to send and receive information.
TECHNICAL DETAILS
40,960 bytes
EXE
Yes
21 Feb 2014
Connects to URLs/IPs, Compromises system security
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:
- ytf^&^333
Backdoor Routine
This backdoor executes the following commands from a remote malicious user:
- Send system information (Lan IP, Wan IP, Computer name, Username, Account Type, OS)
- Send hardware information (CPU speed, Memory)
- Manage Files (Search, Download, Upload, Execute, Rename, Delete)
- Manage Registries (Search, Modify, Delete, Rename, Create)
- Manage Processes (View, Kill, Suspend, Unload Module)
- Manage Services (View, Start, Stop, Edit, Install, Uninstall)
- Manage Devices (View, Enable, Disable, Remove)
- Manage Windows
- Relay server
- View,copy and uninstall applications
- View active ports
- Perform a shell command
- Download and inject remote codes to legitimate processes
- Log keystrokes and active window
- Capture screenshots
- View webcam activity
- Listen to microphone audio
- Update, Uninstall, Restart the malware
- Retrieve cached passwords and hashes
It connects to the following websites to send and receive information:
- {BLOCKED}.{BLOCKED}1.us
SOLUTION
9.700
10.620.01
21 Feb 2014
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 users must disable System Restore to allow full scanning of their computers.
Step 2
Scan your computer with your Trend Micro product and note files detected as BKDR_POISON.TUEH
Step 3
Restart in Safe Mode
Step 4
Search and delete the files detected as BKDR_POISON.TUEH
*Note: Some component files may be hidden. Please make sure you check the Search Hidden Files and Folders checkbox in the More advanced options option to include all hidden files and folders in the search result.
To stop the malware/grayware from running when certain files are opened:
For Windows 2000, Windows XP, and Windows Server 2003:
- Right-click Start then click Search....
- In the Named input box, type the name of the file that was detected earlier.
- In the Look In drop-down list, select My Computer then press Enter.
- Once located, select the file then press SHIFT+DELETE to delete it.
For Windows Vista and Windows 7:
- Click Start>Computer.
- In the Search Computer input box, type the name of the file detected earlier, and press Enter.
- Once located, select the file then press SHIFT+DELETE to delete it.
*Note: Read the following Microsoft page if these steps do not work on Windows 7.
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as BKDR_POISON.TUEH. 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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