BACKDOOR.WIN32.FAKEMS.AA
Trojan-Downloader.Win32.Agent.xxykoj (Kaspersky)
Windows
Threat Type: Backdoor
Destructiveness: No
Encrypted: No
In the wild: Yes
OVERVIEW
Dropped by other malware, Downloaded from the Internet
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 executes commands from a remote malicious user, effectively compromising the affected system.
It steals certain information from the system and/or the user.
TECHNICAL DETAILS
50,176 bytes
DLL
No
09 Oct 2018
Connects to URLs/IPs, Steals information
Arrival Details
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.
Autostart Technique
This Backdoor adds the following registry entries to enable its automatic execution at every system startup:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\
Windows\CurrentVersion\Run
Adobe Monitor = rundll32.exe {Malware Directory}\{Malware File Name}.dll, start
Backdoor Routine
This Backdoor executes the following commands from a remote malicious user:
- Execute Shell Code
- Read/Write Files
- Create Process
It connects to the following URL(s) to send and receive commands from a remote malicious user:
- http://{BLOCKED}esocketgoogle.com/larva2/index.php?v=d
Information Theft
This Backdoor steals the following information:
- Domain Name
- Computer Name
- Volume Serial Number
- Language Setting
- Hardware Information:
- Motherboard (Model, SKU)
- Hard Drive (Size, Model)
- CPU (Name, Description)
SOLUTION
9.850
14.560.01
12 Oct 2018
14.561.00
13 Oct 2018
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 BACKDOOR.WIN32.FAKEMS.AA
- 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
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\SOFTWARE\Microsoft\Windows\Currentversion\Run
- Adobe Monitor = "rundll32.exe {malware file path}\{malware file name}.dll,start"
- Adobe Monitor = "rundll32.exe {malware file path}\{malware file name}.dll,start"
Step 5
Scan your computer with your Trend Micro product to delete files detected as BACKDOOR.WIN32.FAKEMS.AA. 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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