Coinminer.Win64.MALXMR.TIAOODDL
Windows
Threat Type: Coinminer
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Coinminer 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
1,250,304 bytes
EXE
Yes
14 Mar 2020
Arrival Details
This Coinminer 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 Coinminer adds the following processes:
- %Windows%\Microsoft.NET\Framework\v4.0.30319\mscorsvw.exe
- %System%\svchost.exe -k LocalServiceAndNoImpersonation
- %Windows%\Microsoft.NET\Framework64\v4.0.30319\mscorsvw.exe
- %System%\sppsvc.exe
- %System%\svchost.exe -k WerSvcGroup
- "%System Root%\Program Files\Windows Media Player\wmpnetwk.exe"
- %System%\svchost.exe -k NetworkService
- %System%\svchost.exe -k DcomLaunch
(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.. %System Root% is the Windows root folder, where it usually is C:\ on all Windows operating system versions.)
It creates the following folders:
- %All Users Profile%\Microsoft\Windows\Caches
- %Windows%\ServiceProfiles\NetworkService\AppData\Local\Microsoft
- %Windows%\ServiceProfiles\LocalService\AppData\Roaming\Microsoft\UPnP Device Host
- %Windows%\ServiceProfiles\LocalService\AppData\Roaming\Microsoft\UPnP Device Host\upnphost
- %Windows%\ServiceProfiles\LocalService\AppData\Roaming\Microsoft
- %Windows%\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\Caches
(Note: %All Users Profile% is the common user's profile folder, which is usually C:\Documents and Settings\All Users on Windows 2000(32-bit), XP, and Server 2003(32-bit), or C:\ProgramData on Windows Vista, 7, 8, 8.1, 2008(64-bit), 2012(64-bit) and 10(64-bit). . %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)
Autostart Technique
This Coinminer registers itself as a system service to ensure its automatic execution at every system startup by adding the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\WinRing0_1_2_0
ImagePath = "%System%\WinRing0x64.sys"
Other System Modifications
This Coinminer deletes the following files:
- %Windows%\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\Caches\{AFBF9F1A-8EE8-4C77-AF34-C647E37CA0D9}.1.ver0x0000000000000000.db
- %Windows%\LastGood.Tmp
(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.)
It adds the following registry entries:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\WinRing0_1_2_0
DeleteFlag = "1"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
services\WinRing0_1_2_0
Start = "4"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
UPnP Device Host\HTTP Server\VROOTS\
/upnphost
(Default) = "{random characters}"
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
UPnP Device Host\Description\{262DFC30-A9EC-4089-AE41-1DD542D7E10C}\
UDN Mappings\uuid:{GUID}
(Default) = "uuid:{GUID}"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\WinRing0_1_2_0
DisplayName = "WinRing0_1_2_0"
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Services\WinRing0_1_2_0
Start = "SERVICE_DEMAND_START"
Dropping Routine
This Coinminer drops the following files:
- %Windows%\ServiceProfiles\LocalService\AppData\Roaming\Microsoft\UPnP Device Host\upnphost\udhisapi.dll
- %AppDataLocal%\Microsoft\Media Player\CurrentDatabase_372.wmdb
(Note: %Windows% is the Windows folder, where it usually is C:\Windows on all Windows operating system versions.. %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).)
Other Details
This Coinminer connects to the following possibly malicious URL:
- http://eu.{BLOCKED}ool.pw
This report is generated via an automated analysis system.
SOLUTION
9.850
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
Identify and terminate files detected as Coinminer.Win64.MALXMR.TIAOODDL
- Windows Task Manager may not display all running processes. In this case, please use a third-party process viewer, preferably Process Explorer, to terminate the malware/grayware/spyware file. You may download the said tool here.
- If the detected file is displayed in either Windows Task Manager or Process Explorer but you cannot delete it, restart your computer in safe mode. To do this, refer to this link for the complete steps.
- If the detected file is not displayed in either Windows Task Manager or Process Explorer, continue doing the next steps.
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_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\WinRing0_1_2_0
- DeleteFlag = "1"
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\WinRing0_1_2_0
- Start = "4"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\UPnP Device Host\HTTP Server\VROOTS\/upnphost
- (Default) = "{random characters}"
- In HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\UPnP Device Host\Description\{262DFC30-A9EC-4089-AE41-1DD542D7E10C}\UDN Mappings\uuid:{GUID}
- (Default) = "uuid:{GUID}"
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinRing0_1_2_0
- DisplayName = "WinRing0_1_2_0"
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\WinRing0_1_2_0
- Start = "SERVICE_DEMAND_START"
Step 4
Search and delete these components
- %Windows%\ServiceProfiles\LocalService\AppData\Roaming\Microsoft\UPnP Device Host\upnphost\udhisapi.dll
- %AppDataLocal%\Microsoft\Media Player\CurrentDatabase_372.wmdb
Step 5
Search and delete these folders
- %All Users Profile%\Microsoft\Windows\Caches
- %Windows%\ServiceProfiles\NetworkService\AppData\Local\Microsoft
- %Windows%\ServiceProfiles\LocalService\AppData\Roaming\Microsoft\UPnP Device Host
- %Windows%\ServiceProfiles\LocalService\AppData\Roaming\Microsoft\UPnP Device Host\upnphost
- %Windows%\ServiceProfiles\LocalService\AppData\Roaming\Microsoft
- %Windows%\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\Caches
Step 6
Scan your computer with your Trend Micro product to delete files detected as Coinminer.Win64.MALXMR.TIAOODDL. 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 7
Restore this file from backup only Microsoft-related files will be restored. If this malware/grayware also deleted files related to programs that are not from Microsoft, please reinstall those programs on you computer again.
- %Windows%\ServiceProfiles\NetworkService\AppData\Local\Microsoft\Windows\Caches\{AFBF9F1A-8EE8-4C77-AF34-C647E37CA0D9}.1.ver0x0000000000000000.db
- %Windows%\LastGood.Tmp
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