HKTL_BITCOINMINER
Riskware/Java_BitCoinMiner (Fortinet), RiskTool.Win32.BitCoinMiner (Ikarus), RiskTool.Java.BitCoinMiner.a (Kaspersky), Trojan:Win32/Dotimorn (Microsoft)
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: Hacking Tool
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This hacking tool arrives on a system as a file dropped by other malware or as a file downloaded unknowingly by users when visiting malicious sites.
TECHNICAL DETAILS
1,610,284 bytes
EXE
No
24 Feb 2013
Arrival Details
This hacking tool 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 hacking tool drops the following file(s)/component(s):
- %Application Data%\torrent\alcc.exe
- %Application Data%\torrent\diablo121016.cl
- %Application Data%\torrent\diakgcn121016.cl
- %Application Data%\torrent\libcurl.dll
- %Application Data%\torrent\libeay32.dll
- %Application Data%\torrent\libidn-11.dll
- %Application Data%\torrent\liblnx.cl
- %Application Data%\torrent\librtmp.dll
- %Application Data%\torrent\libssh2.dll
- %Application Data%\torrent\libusb-1.0.dll
- %Application Data%\torrent\NwTray.exe
- %Application Data%\torrent\OpenCL.dll
- %Application Data%\torrent\phatk121016.cl
- %Application Data%\torrent\poclbm121016.cl
- %Application Data%\torrent\ssleay32.dll
- %Application Data%\torrent\zlib1.dll
(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
It creates the following folders:
- %Application Data%\torrent
(Note: %Application Data% is the Application Data folder, where it usually is C:\Documents and Settings\{user name}\Application Data on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Roaming on Windows Vista (32- and 64-bit), Windows 7 (32- and 64-bit), Windows 8 (32- and 64-bit), Windows 8.1 (32- and 64-bit), Windows Server 2008, and Windows Server 2012.)
Other System Modifications
This hacking tool adds the following registry entries as part of its installation routine:
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Run
NwTray = ""%Application Data%\torrent\NwTray.exe""
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
System
DisableTaskMgr = "1"
HKEY_CURRENT_USER\Software\WinRAR SFX
%Application Data%%torrent = "%Application Data%\torrent"
It adds the following registry keys as part of its installation routine:
HKEY_CURRENT_USER\Software\WinRAR SFX
HKEY_CURRENT_USER\Software\Microsoft\
Windows\CurrentVersion\Policies\
System
SOLUTION
9.300
1.379.01
24 Feb 2013
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
Search and delete these folders
- %Application Data%\torrent
Step 3
Delete this registry key
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. Before you could do this, you must restart in Safe Mode. For instructions on how to do this, you may refer to this page If the preceding step requires you to restart in safe mode, you may proceed to edit the system registry.
- In HKEY_CURRENT_USER\Software
- WinRAR SFX
- WinRAR SFX
- In HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Policies
- System
- System
Step 4
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_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run
- NwTray = ""%Application Data%\torrent\NwTray.exe""
- NwTray = ""%Application Data%\torrent\NwTray.exe""
Step 5
Scan your computer with your Trend Micro product to delete files detected as HKTL_BITCOINMINER. 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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