BKDR64_WINNTI.F
Backdoor.Win64.Winnti.cb (Kaspersky)
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: 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 arrives as a component bundled with malware/grayware packages.
It does not have any propagation routine.
It executes commands from a remote malicious user, effectively compromising the affected system.
It retrieves specific information from the affected system.
It requires its main component to successfully perform its intended routine.
TECHNICAL DETAILS
159,656 bytes
DLL
No
26 May 2014
Compromises system security
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.
It arrives as a component bundled with malware/grayware packages.
Other System Modifications
This backdoor adds the following registry entries as part of its installation routine:
HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\
Control\WMI
lpstatus = "{hex value}"
Propagation
This backdoor does not have any propagation routine.
Backdoor Routine
This backdoor executes the following commands from a remote malicious user:
- Create, start or terminate processes and services
- Download and execute arbitrary files
- Enumerate, modify or create registry entries
- Create folders
- Enumerate files
Information Theft
This backdoor retrieves the following information from the affected system:
- Dhcp IP Address
- Dhcp Subnet Mask
- Dhcp Default Gateway
- IP Address
- Subnet Mask
- Default Gateway
Other Details
This backdoor requires its main component to successfully perform its intended routine.
NOTES:
This malware is used by other malware to perform backdoor and information theft routines.
It does not have rootkit capabilities.
It does not exploit any vulnerability.
SOLUTION
9.700
10.820.01
26 May 2014
10.821.00
27 May 2014
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
Delete this registry value
Important: Editing the Windows Registry incorrectly can lead to irreversible system malfunction. Please do this step only if you know how or you can ask assistance from your system administrator. Else, check this Microsoft article first before modifying your computer's registry.
- In HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Control\WMI
- lpstatus = "{hex value}"
- lpstatus = "{hex value}"
Step 3
Scan your computer with your Trend Micro product to delete files detected as BKDR64_WINNTI.F. 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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