Trojan.LNK.EMOTET.YXCEP
Trojan:PowerShell/Emotet.SSM!MTB (EMOTET)
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted: Yes
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.
TECHNICAL DETAILS
2,586 bytes
LNK
No
17 May 2022
Deletes files, Drops 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 adds the following processes:
- %System%\cmd.exe /v:on /c {encoded base 64}||goto&p^o^w^e^r^s^h^e^l^l.e^x^e -c "&{[System.Text.Encoding]::ASCII.GetString([System.Convert]::FromBase64String('{encoded base 64}'))
- powershell.exe -c "&{ iex[System.Text.Encoding]::ASCII.GetString([System.Convert]::FromBase64String('{encoded base 64}'))
- regsvr32.exe %User Temp%\..\weQuyoxXhw.KRG
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local\Temp on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
It creates the following folders:
- %AppDataLocal%\pGgcN
(Note: %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
Download Routine
This Trojan connects to the following website(s) to download and execute a malicious file:
- http://www.{BLOCKED}lland.eu/flashshoot/A1sVGeUdOmXpPeof/
- http://www.{BLOCKED}b-de-volharding.nl/Contact/02tLuEpm/
- http://{BLOCKED}ain.dk/page4/Z1WgiqhBHkq69IULjWSl/
- https://{BLOCKED}g.com/wp-includes/b4aZTW/
- https://{BLOCKED}arsagadir.net/n3rz4Y9rscfwluelvDV/LqxCq/
- http://{BLOCKED}ble-hush.org/crichton/N/
It saves the files it downloads using the following names:
- %AppDataLocal%\pGgcN\weQuyoxXhw.KRG -> detected as TrojanSpy.Win64.EMOTET.YXCEOZ
(Note: %AppDataLocal% is the Local Application Data folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Application Data on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\Users\{user name}\AppData\Local on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit).)
SOLUTION
9.800
17.570.04
17 May 2022
17.571.00
18 May 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 this file
- %AppDataLocal%\pGgcN\weQuyoxXhw.KRG
Step 4
Search and delete this folder
- %AppDataLocal%\pGgcN
Step 5
Scan your computer with your Trend Micro product to delete files detected as Trojan.LNK.EMOTET.YXCEP. 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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