RANSOM_MRLOCKER.A
rojan:MSIL/LockScreen.H!bit (Microsoft), Trojan-Ransom.MRLocker (Ikarus), Trojan.Ransom.ScreenLocker (ALYac)
Windows
![](/vinfo/imgFiles/legend.jpg)
Threat Type: Ransomware
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Dropped by other malware, Downloaded from the Internet
This Ransomware 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
417,280 bytes
EXE
Yes
06 Jun 2017
Locks screen, Displays graphics/image
Arrival Details
This Ransomware arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
Autostart Technique
This Ransomware adds the following registry entries to enable its automatic execution at every system startup:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
Mr Locker = %User Temp%\{malware name}
Process Termination
This Ransomware terminates the following processes if found running in the affected system's memory:
- taskmgr.exe
- regedit.exe
- cmd.exe
Other Details
This Ransomware locks the screen and displays the following image:
NOTES:
If user inputs the wrong code, the malware displays the following:
SOLUTION
9.850
13.456.08
07 Jun 2017
13.457.00
08 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
Restart in Safe Mode
Step 4
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\Run
- Mr Locker = %User Temp%\{malware name}
- Mr Locker = %User Temp%\{malware name}
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as RANSOM_MRLOCKER.A. 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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