Backdoor.Win64.COBEACON.QND
VirTool:Win64/Atosev.A (Microsoft)
Windows
Threat Type: Backdoor
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
Downloaded from the Internet, Dropped by other malware
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 does not have any file infection routine.
It does not have any propagation routine.
It executes commands from a remote malicious user, effectively compromising the affected system.
It does not have any information-stealing capability.
It connects to certain websites to send and receive information.
TECHNICAL DETAILS
290,304 bytes
EXE
Yes
01 Aug 2019
Connects to URLs/IPs, Downloads files
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.
Infection Points
This Backdoor does not have any file infection routine.
Installation
This Backdoor adds the following processes:
- %System%\notepad.exe
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
It injects codes into the following process(es):
- added %System%\notepad.exe process
(Note: %System% is the Windows system folder, where it usually is C:\Windows\System32 on all Windows operating system versions.)
Propagation
This Backdoor does not have any propagation routine.
Backdoor Routine
This Backdoor executes the following commands from a remote malicious user:
- Execute PowerShell commands
- Upload/Download files
- Manage files
- Manage services
- Read/Modify file time
- Obtain/Create access tokens
- Impersonate tokens
- Open processes
- Inject codes to processes
- Adjust permissions in process
- Connect to a named pipe
- Use/Purge Kerberos tickets
- Escalate privileges
Rootkit Capabilities
This Backdoor does not have rootkit capabilities.
Information Theft
This Backdoor does not have any information-stealing capability.
Other Details
This Backdoor connects to the following website to send and receive information:
- http://12491.{BLOCKED}.somberbagel-hx.org/weye?param={value}
- http://12491.{BLOCKED}.wistfuleye.net,/weye?param={value}
- http://12491.{BLOCKED}.cobaltfinder.org/weye?param={value}
It does the following:
- This malware starts the following service:
- DceRpcSs
It does not exploit any vulnerability.
SOLUTION
9.850
15.272.06
02 Aug 2019
15.273.00
03 Aug 2019
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
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
Disable this malware service
-
- DceRpcSs
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as Backdoor.Win64.COBEACON.QND. 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.
Step 6
Scan your computer with your Trend Micro product to delete files detected as Backdoor.Win64.COBEACON.QND. 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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