TROJ_UPATRE.PDK
TrojanDownloader:Win32/Upatre.A (Microsoft); TrojanDownloader.Upatre.A5 (CAT-QuickHeal);
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Downloaded from the Internet
This Trojan arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
However, as of this writing, the said sites are inaccessible. It deletes itself after execution.
TECHNICAL DETAILS
22,400 bytes
EXE
No
28 Mar 2014
Connects to URLs/IPs, Downloads files
Arrival Details
This Trojan 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 Trojan drops the following copies of itself into the affected system and executes them:
- %User Temp%\buddha.exe
(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
Download Routine
This Trojan connects to the following website(s) to download and execute a malicious file:
- http://{BLOCKED}nveyancing/m/css/2703USm.git
Other Details
However, as of this writing, the said sites are inaccessible.
It deletes itself after execution.
NOTES:
This Trojan accesses the URL {BLOCKED}.{BLOCKED}.35.133:33136/1812us11/{Computer Name}/0/{OS Version}-{Service Pack}/0/ to send information. The following information are posted:
- Computer name
- Operating system version
- Service pack installed
SOLUTION
9.8
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
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 3
Search and delete these files
- %User Temp%\buddha.exe
Step 4
Scan your computer with your Trend Micro product to delete files detected as TROJ_UPATRE.PDK. 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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