Trojan.XF.EMOTET.YJCKY
TrojanDownloader:O97M/Emotet.RPL!MTB (MICROSOFT)
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
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.
It does not have any propagation routine.
It does not have any backdoor routine.
TECHNICAL DETAILS
93,184 bytes
XLS
No
25 Nov 2022
Connects to URLs/IPs, Displays message/message boxes
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:
- "%System%\regsvr32.exe /S ..\elv1.ooocccxxx"
- "%System%\regsvr32.exe /S ..\elv2.ooocccxxx"
- "%System%\regsvr32.exe /S ..\elv3.ooocccxxx"
- "%System%\regsvr32.exe /S ..\elv4.ooocccxxx"
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
Propagation
This Trojan does not have any propagation routine.
Backdoor Routine
This Trojan does not have any backdoor routine.
Rootkit Capabilities
This Trojan does not have rootkit capabilities.
Download Routine
This Trojan connects to the following website(s) to download and execute a malicious file:
- https://{BLOCKED}tw.com/img/O8G0RDZj7MYCuJyPoP/
- http://sbm.{BLOCKED}hiwang.com/upload/VaOfWEb3pW76UO/
- https://{BLOCKED}po.ac.zm/cgi-bin/WFFcGx/
- http://ly.{BLOCKED}yi.top/wp-admin/4cChao/
It saves the files it downloads using the following names:
- {Parent of default Excel save path}\elv1.ooocccxxx
- {Parent of default Excel save path}\elv2.ooocccxxx
- {Parent of default Excel save path}\elv3.ooocccxxx
- {Parent of default Excel save path}\elv4.ooocccxxx
Other Details
This Trojan does the following:
- It contains the following message details luring users to move the downloaded file to a specific path before execution:
It does not exploit any vulnerability.
SOLUTION
9.800
18.102.01
28 Nov 2022
18.103.00
29 Nov 2022
Step 1
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 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
- {Parent of default Excel save path}\elv1.ooocccxxx
- {Parent of default Excel save path}\elv2.ooocccxxx
- {Parent of default Excel save path}\elv3.ooocccxxx
- {Parent of default Excel save path}\elv4.ooocccxxx
Step 4
Scan your computer with your Trend Micro product to delete files detected as Trojan.XF.EMOTET.YJCKY. 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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