Trojan.W97M.EMOTET.TIOIBEMY
VB:Trojan.Agent.FBIV (BITDEFENDER); Trojan-Downloader.VBA.Emotet (IKARUS)
Windows
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:
- cmd cmd cmd cmd /c msg %username% /v Word experienced an error trying to open the file. & P^Ow^er^she^L^L -w hidden -ENCOD {Base64 encoded string}
It creates the following folders:
- %User Profile%\Nsghoht\Gbh5r9o
(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name} on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
Download Routine
This Trojan accesses the following websites to download files:
- http://{BLOCKED}omoving.com/p/RuMeRPa
- http://{BLOCKED}u.com/wp-admin/eYu1Q
- http://{BLOCKED}setme.com/wp-content/pmJ
- https://{BLOCKED}uter.com/content/TL
- https://{BLOCKED}m.com/wp-admin/JSLwG1
- http://{BLOCKED}krah.com/wp-admin/fOIlVX
- https://{BLOCKED}ency.com/wp-admin/mXo4b/
It saves the files it downloads using the following names:
- %User Profile%\Nsghoht\Gbh5r9o\Q27V.dll -> if site is accessible
(Note: %User Profile% is the current user's profile folder, which is usually C:\Documents and Settings\{user name} on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name} on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
As of this writing, the said sites are inaccessible.
Other Details
This Trojan does the following:
- If file is successfully downloaded, it creates the following process:
- rundll32 %User Profile%\Nsghoht\Gbh5r9o\Q27V.dll, Control_RunDLL
- The document contains the following message details luring users to enable macro content:
- It shows the following fake error message upon enabling macro content:
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:
- Downloader.VBA.TRX.XXVBAF01FF012
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 folders
- %User Profile%\Nsghoht\Gbh5r9o
Step 5
Scan your computer with your Trend Micro product to delete files detected as Trojan.W97M.EMOTET.TIOIBEMY. 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:
Step 6
Enable the macro virus protection in Microsoft Office Applications
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