Backdoor.Win32.COBEACON.OSLJDV
Windows
Threat Type: Backdoor
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
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.
TECHNICAL DETAILS
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.
Backdoor Routine
This Backdoor executes the following commands from a remote malicious user:
- Impersonate tokens
- Execute arbitrary commands
- Manage files(Create, Delete, Modify, Move, Copy)
- Manage directories(Create, Remove)
- Manage processes(Create, Open, Terminate)
- Inject code into processes
- Connect and disconnect to a named pipe
- Escalate privileges
- Upload/download files
- Enumerate drives
It connects to the following URL(s) to send and receive commands from a remote malicious user:
- https://{BLOCKED}ncnow.com/Upset/v4.27/82GK4E4PV
- https://{BLOCKED}ncnow.com/produce/v10.98/0FRTLTXWT
Information Theft
This Backdoor gathers the following data:
- Username
- Computer Name
- Current Process ID
- OS Version and Architecture
Other Details
This Backdoor does the following:
- It requires a specific user name to proceed with its intended routine.
SOLUTION
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 Backdoor.Win32.COBEACON.OSLJDV
- 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
Scan your computer with your Trend Micro product to delete files detected as Backdoor.Win32.COBEACON.OSLJDV. 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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