BKDR_REDLEAVES.ZAEE-A
Windows
Threat Type: Backdoor
Destructiveness: No
Encrypted: Yes
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 requires its main component to successfully perform its intended routine.
TECHNICAL DETAILS
340,432 bytes
DLL
Yes
27 Apr 2017
Drops files, Terminates processes, Compromises system security, Shuts the system down, Creates files, Executes files, Logs keystrokes
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.
Installation
This Backdoor injects codes into the following process(es):
- created msiexec.exe
- created svchost.exe
Backdoor Routine
This Backdoor executes the following commands from a remote malicious user:
- Copy, move, rename, delete files
- Create directories
- Create files
- Enumerate files
- Execute files
- Get drive information
- Get file information
- Open and modify files
- Log keystrokes and active window
- Enumerate TCP and UDP connections
- Enumerate network resources
- Set TCP connection state
- Lock workstation
- Log off user
- Restart/Reboot/Shutdown system
- Display a message box
- Perfrom port mapping
- Enumerate processes
- Get process information
- Terminate processes
- Enumerate registry keys
- Create registry keys
- Delete registry keys
- Copy registry keys
- Enumerate registry entries
- Modify registry entries
- Delete registry values
- Screen capture
- Delete services
- Enumerate services
- Get service information
- Modify services
- Start services
- Perform remote shell
- Host Telnet server
- Connect to a database server and execute SQL statement
It connects to the following URL(s) to send and receive commands from a remote malicious user:
- us.{BLOCKED}lefiles.com
As of this writing, the said sites are inaccessible.
Other Details
This Backdoor requires its main component to successfully perform its intended routine.
SOLUTION
9.850
13.378.02
03 May 2017
13.379.00
04 May 2017
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
Restart in Safe Mode
Step 4
Identify and terminate files detected as BKDR_REDLEAVES.ZAEE-A
- 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
Restart in normal mode and scan your computer with your Trend Micro product for files detected as BKDR_REDLEAVES.ZAEE-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 this Knowledge Base page for more information.
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