BKDR_HIKIT.VK
VirTool:Win32/Obfuscator.XZ (Microsoft), Mal/Agent-AML (Sophos)
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
Dropped by other malware, Downloaded from the Internet
This backdoor may arrive bundled with malware packages as a malware component. It 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
250,880 bytes
DLL
Yes
18 May 2014
Connects to URLs/IPs, Collects system information
Arrival Details
This backdoor may arrive bundled with malware packages as a malware component.
It 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 drops the following file(s)/component(s):
- %User Temp%\~cache_4e64724140404d6b6e.tmp
(Note: %User Temp% is the current user's Temp folder, which is usually C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, XP, and Server 2003, or C:\Users\{user name}\AppData\Local\Temp on Windows Vista and 7.)
Backdoor Routine
This backdoor executes the following commands from a remote malicious user:
- List service
- Start/Stop/Delete service
- Start/Stop connection to server
- Perform remote shell
- Terminate itself
- Get proxy server information (Proxy type, proxy name, user name, password)
- Get system information (OEMCP)
- Manages Files
- Get Volume Information
- OS Version
- Get drive information (Removable drive, Fixed drive, Network drive, CD-ROM, RAM disk)
It connects to the following URL(s) to send and receive commands from a remote malicious user:
- {BLOCKED}7.{BLOCKED}.0.1:1533
Other Details
This backdoor requires its main component to successfully perform its intended routine.
NOTES:
This backdoor possibly drops the following file:
- %User Temp%\TMP4e667647484a59797e.dat – detected as RTKT_HIKIT.KZ
It does not have rootkit capabilities.
It does not exploit any vulnerability.
SOLUTION
9.700
10.802.06
19 May 2014
10.803.00
19 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
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
Remove malware/grayware files dropped/downloaded by BKDR_HIKIT.VK. (Note: Please skip this step if the threats listed below have already been removed.)
- RTKT_HIKIT.KZ
Step 4
Restart in Safe Mode
Step 5
Search and delete this file
- %User Temp%\~cache_4e64724140404d6b6e.tmp
Step 6
Restart in normal mode and scan your computer with your Trend Micro product for files detected as BKDR_HIKIT.VK. 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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