This backdoor uses several known websites to receive backdoor commands, facilitate communication of the commands, and upload files.
This Backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites. It may be downloaded by other malware/grayware from remote sites.
It executes commands from a remote malicious user, effectively compromising the affected system. However, as of this writing, the said sites are inaccessible.
It gathers certain information on the affected computer.
This Backdoor arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
It may be downloaded by the following malware/grayware from remote sites:
This Backdoor creates the following registry entries to enable automatic execution of dropped component at every system startup:
Microsoft Setup Initializazion = rundll32 "%All Users Profile%\update\Windows-RT-KB2937636.dll",UpdateMPUnits
This Backdoor executes the following commands from a remote malicious user:
It connects to the following URL(s) to send and receive commands from a remote malicious user:
However, as of this writing, the said sites are inaccessible.
This Backdoor gathers the following information on the affected computer:
This Backdoor does the following:
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.
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.
Identify and terminate files detected as Backdoor.Win32.SLUB.A
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.
Scan your computer with your Trend Micro product to delete files detected as Backdoor.Win32.SLUB.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 the following Trend Micro Support pages for more information: