BKDR_GATES.Q
Windows 2000, Windows Server 2003, Windows XP (32-bit, 64-bit), Windows Vista (32-bit, 64-bit), Windows 7 (32-bit, 64-bit)
Threat Type: Backdoor
Destructiveness: No
Encrypted: No
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 executes commands from a remote malicious user, effectively compromising the affected system. It connects to a website to send and receive information.
It is used to load and execute a file.
TECHNICAL DETAILS
Varies
EXE
Yes
19 Jun 2014
Compromises system security, 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:
- Perform remote shell
- Launch DDoS (distributed denial of service) attack using any of the following flood methods:
- UPD flood
- TCP flood
- SYN flood
- ICMP flood
- Update copy of itself
- Download arbitrary files
It connects to the following websites to send and receive information:
- {BLOCKED}.{BLOCKED}.41.219
Information Theft
This backdoor gathers the following data:
- OS version
- Processor information
- Processor performance (\Processor({number})\% Processor Time)
- Network Interface performance (Network Interface({name})\Bytes Total/sec)
- List of Devices
Other Details
This backdoor is used to load and execute the following file:
- %System%\libamplify.dll
(Note: %System% is the Windows system folder, which is usually C:\Windows\System32.)
NOTES:
It will read the following files:
- {malware path}\conf.n
- {malware path}\cmd.n
It queries the following registry key to get the processor information:
- HKEY_LOCAL_MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\{number}\~MHz
It will not perform its intended routine if the following strings are present in Network Interface:
- Loopback
- Virtual
- MAC
It checks if the following files are present:
- {Directory}\agony.exe
- {Directory}\DNSSupport.exe
- {Directory}\DNSProtection.exe
- {Directory}\agony.sys
- {Directory}\agony.exe
- {Directory}\conf.n
- {Directory}\cmd.n
- {Directory}\svch0st.exe
where {Directory} can be any of the following:
- %Program Files%\Windows Media Player
- {malware path}
If the files are found, it will execute the following as hidden processes:
- {Directory}\agony.exe -tcp 45000
- {Directory}\agony.exe -tcp 45100
- {Directory}\agony.exe -s DNSSupport
- {Directory}\agony.exe -p DNSSupport.exe
- {Directory}\agony.exe -p DNSProtection.exe
- {Directory}\agony.exe -f DNSSupport.exe
- {Directory}\agony.exe -f DNSProtection.exe
- {Directory}\agony.exe -f agony.sys
- {Directory}\agony.exe -f agony.exe
- {Directory}\agony.exe -f conf.n
- {Directory}\agony.exe -f cmd.n
- {Directory}\agony.exe -f svch0st.exe
SOLUTION
9.700
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
Identify and terminate files detected as BKDR_GATES.Q
- 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
Search and delete these files
- {malware path}\conf.n
- {malware path}\cmd.n
- {Directory}\agony.exe
- {Directory}\DNSSupport.exe
- {Directory}\DNSProtection.exe
- {Directory}\agony.sys
- {Directory}\agony.exe
- {Directory}\conf.n
- {Directory}\cmd.n
- {Directory}\svch0st.exe
Step 4
Scan your computer with your Trend Micro product to delete files detected as BKDR_GATES.Q. 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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