Backdoor.Win32.COBEACON.RJACC
Trojan:Win32/CobaltStrike.E!ibt (MICROSOFT);
Windows
Threat Type: Backdoor
Destructiveness: No
Encrypted: Yes
In the wild: Yes
OVERVIEW
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 connects to a website to send and receive information.
It requires its main component to successfully perform its intended routine.
TECHNICAL DETAILS
208,384 bytes
Other
Yes
01 Apr 2022
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.
Backdoor Routine
This Backdoor executes the following commands from a remote malicious user:
- Execute Arbitrary Commands
- Manage Files (Create, Delete, Rename, Copy)
- Manage Directories (Create, Remove, Set Directory)
- Manage Processes (List, Create, Suspend, Kill)
- Inject Code into Processes
- Connect and Communicate to a Named pipe
- Enumerate Drives
- Impersonate Tokens
- Escalate Privileges
It connects to the following websites to send and receive information:
- http://{BLOCKED}.{BLOCKED}.173.125/get.css
- http://{BLOCKED}.{BLOCKED}.173.125/fam_newspaper
Information Theft
This Backdoor gathers the following data:
- Computer Name
- User Name
- OS Version
- Process Filename
Other Details
This Backdoor requires its main component to successfully perform its intended routine.
It does the following:
- It appends the following to the requests as additional header:
- Cookie: wordpress_ed1f617bbd6c004cc09e046f3c1b7148={Encoded stolen information}
SOLUTION
9.800
17.480.05
02 Apr 2022
17.481.00
03 Apr 2022
Step 1
Trend Micro Predictive Machine Learning detects and blocks malware at the first sign of its existence, before it executes on your system. When enabled, your Trend Micro product detects this malware under the following machine learning name:
- TROJ.Win32.TRX.XXPE50FFF055
Step 2
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 3
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 4
Identify and terminate files detected as Backdoor.Win32.COBEACON.RJACC
- 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 5
Scan your computer with your Trend Micro product to delete files detected as Backdoor.Win32.COBEACON.RJACC. 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:
Did this description help? Tell us how we did.