Trojan.W97M.EMOTET.SPSC
HEUR:Trojan.Script.Generic (KASPERSKY); TrojanDownloader:O97M/Emotet.SS!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.
TECHNICAL DETAILS
527220736 bytes
DOC
No
09 Mar 2023
Displays message/message boxes, Connects to URLs/IPs, Downloads files, Modifies system registry
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 folders:
- {Malware Path}\{Random Numbers} → deleted afterwards
It drops the following files:
- {Malware Path}\{Random Numbers}\fVyjQAytyWVqgIJ.dll
- {Malware Path}\{Random Numbers}.tmp → renamed and moved copy of fVyjQAytyWVqgIJ.dll
- {Malware Path}\{Random Numbers}.zip → deleted afterwards
It adds the following processes:
- "%System%\regsvr32.exe" /s "{Malware Path}\{Random Numbers}.tmp"
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
Other System Modifications
This Trojan adds the following registry entries:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
Discardable\PostSetup\Component Categories\
{56FFCC30-D398-11D0-B2AE-00A0C908FA49}\Enum
Implementing = {Hex Values}
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Shell Extensions\
Cached
{2781761E-28E0-4109-99FE-B9D127C57AFE} {56FFCC30-D398-11D0-B2AE-00A0C908FA49} 0xFFFF = {Hex Values}
HKEY_CURRENT_USER\Software\Microsoft\
Office\12.0\Common
QMSessionCount = 2
Other Details
This Trojan adds the following registry keys:
HKEY_CURRENT_USER\Software\Microsoft\
VBA
HKEY_CURRENT_USER\Software\Microsoft\
VBA\6.0
HKEY_CURRENT_USER\Software\Microsoft\
VBA\6.0\Common
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
Discardable\PostSetup\Component Categories
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
Discardable\PostSetup\Component Categories\
{56FFCC30-D398-11D0-B2AE-00A0C908FA49}\Enum
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Explorer\
Discardable\PostSetup\Component Categories\
{56FFCC30-D398-11D0-B2AE-00A0C908FA49}
It connects to the following possibly malicious URL:
- e{BLOCKED}i-gourmet.kz
- {BLOCKED}stsupplies.com.au
- {BLOCKED}isbane.org.au
- http://a{BLOCKED}un.cn/8uhjvgd/nhAOl4DRmdOKz/?161846&c=1
SOLUTION
9.800
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
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Discardable\PostSetup\Component Categories\{56FFCC30-D398-11D0-B2AE-00A0C908FA49}\Enum
- Implementing = {Hex Values}
- Implementing = {Hex Values}
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Shell Extensions\Cached
- {2781761E-28E0-4109-99FE-B9D127C57AFE} {56FFCC30-D398-11D0-B2AE-00A0C908FA49} 0xFFFF = {Hex Values}
- {2781761E-28E0-4109-99FE-B9D127C57AFE} {56FFCC30-D398-11D0-B2AE-00A0C908FA49} 0xFFFF = {Hex Values}
- In HKEY_CURRENT_USER\Software\Microsoft\Office\12.0\Common
- QMSessionCount = 2
- QMSessionCount = 2
Step 4
Delete this registry key
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_CURRENT_USER\Software\Microsoft\VBA
- In HKEY_CURRENT_USER\Software\Microsoft\VBA\6.0
- In HKEY_CURRENT_USER\Software\Microsoft\VBA\6.0\Common
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Discardable\PostSetup\Component Categories
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Discardable\PostSetup\Component Categories\{56FFCC30-D398-11D0-B2AE-00A0C908FA49}
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Explorer\Discardable\PostSetup\Component Categories\{56FFCC30-D398-11D0-B2AE-00A0C908FA49}\Enum
Step 5
Search and delete these files
- {Malware Path}\{Random Numbers}.zip
- {Malware Path}\{Random Numbers}\fVyjQAytyWVqgIJ.dll
- {Malware Path}\{Random Numbers}.tmp
Step 6
Search and delete this folder
- {Malware Path}\{Random Numbers}
Step 7
Scan your computer with your Trend Micro product to delete files detected as Trojan.W97M.EMOTET.SPSC. 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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