TROJ_ROVNIX.K
Trojan.Win32.Rovnix.gq (Kaspersky); Trojan.Rovnix (Malwarebytes); TrojanDownloader:Win32/Rovnix.A (Microsoft); TR/Rovnix.Gen9 (Avira)
Windows
Threat Type: Trojan
Destructiveness: No
Encrypted:
In the wild: Yes
OVERVIEW
This Trojan 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 deletes files in certain folders, disabling programs and applications from properly running.
It requires its main component to successfully perform its intended routine.
TECHNICAL DETAILS
Arrival Details
This Trojan 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.
Other System Modifications
This Trojan deletes files in the following folders:
- %User Temp%
(Note: %User Temp% is the user's temporary folder, where it usually is C:\Documents and Settings\{user name}\Local Settings\Temp on Windows 2000, Windows Server 2003, and Windows XP (32- and 64-bit); C:\Users\{user name}\AppData\Local\Temp 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 adds the following registry keys:
HKEY_CURRENT_USER\Software\Microsoft\
Installer\Products\B{Volume Serial Number}
HKEY_CURRENT_USER\Software\Microsoft\
Installer\Products\B{Volume Serial Number}\
PLUGIN
Other Details
This Trojan connects to the following possibly malicious URL:
- {domain name}/login.asp
- {domain name}/images/pixel.gif
- {domain name}/images/transparent.gif
- {domain name}/images/logout.gif
It requires its main component to successfully perform its intended routine.
It performs DNS requests to the following sites:
- {BLOCKED}hineynarkkek.org
- {BLOCKED}hineynarkkek2.org
- {BLOCKED}hineynarkkek3.org
- {BLOCKED}vg6cktylw2.onion
- {randomly generated domain}.ru
- {randomly generated domain}.biz
- {randomly generated domain}.net
- {randomly generated domain}.com
- {randomly generated domain}.cn
NOTES:
It connects to the following NTP servers:
- 0.de.pool.ntp.org
- 0.lu.pool.ntp.org
- ntp1.stratum2.ru
SOLUTION
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
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.
- In HKEY_CURRENT_USER\Software\Microsoft\Installer\Products
- B{Volume Serial Number}
- B{Volume Serial Number}
Step 5
Restart in normal mode and scan your computer with your Trend Micro product for files detected as TROJ_ROVNIX.K. 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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