TROJ_COINMINE.WB
Trojan.MSIL.Miner.vpw (Kaspersky); Trojan.Win32.Miner.ephbqy (NANO-Antivirus)
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted:
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.
It uses Windows Task Scheduler to create a scheduled task that executes the dropped copy.
TECHNICAL DETAILS
163,328 bytes
EXE
Yes
13 Jun 2017
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:
- %All User Profile%\UpdateService
It drops the following copies of itself into the affected system and executes them:
- %All User Profile%\UpdateService\UpdateService.exe
It drops the following files:
- %All User Profile%\UpdateService\settings.dat
- %All User Profile%\UpdateService\UpdateService.exe.config
- %System%\Tasks\UpdateService ← scheduled task
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
It uses Windows Task Scheduler to create a scheduled task that executes the dropped copy.
Autostart Technique
The scheduled task executes the malware every:
- At every startup.
Other Details
This Trojan connects to the following possibly malicious URL:
- http://{BLOCKED}eorth.com/info?url=/update/check
SOLUTION
9.850
13.468.05
13 Jun 2017
13.469.00
14 Jun 2017
Step 1
Before doing any scans, Windows XP, Windows Vista, and Windows 7 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
Identify and terminate files detected as TROJ_COINMINE.WB
- 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 4
Search and delete this folder
- %All User Profile%\UpdateService
Step 5
Search and delete this file
- %System%\Tasks\UpdateService
Step 6
Scan your computer with your Trend Micro product to delete files detected as TROJ_COINMINE.WB. 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 this Knowledge Base page for more information.
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