Win32/Olmasco.R
Posted: November 2, 2011
Threat Metric
The following fields listed on the Threat Meter containing a specific value, are explained in detail below:
Threat Level: The threat level scale goes from 1 to 10 where 10 is the highest level of severity and 1 is the lowest level of severity. Each specific level is relative to the threat's consistent assessed behaviors collected from SpyHunter's risk assessment model.
Detection Count: The collective number of confirmed and suspected cases of a particular malware threat. The detection count is calculated from infected PCs retrieved from diagnostic and scan log reports generated by SpyHunter.
Volume Count: Similar to the detection count, the Volume Count is specifically based on the number of confirmed and suspected threats infecting systems on a daily basis. High volume counts usually represent a popular threat but may or may not have infected a large number of systems. High detection count threats could lay dormant and have a low volume count. Criteria for Volume Count is relative to a daily detection count.
Trend Path: The Trend Path, utilizing an up arrow, down arrow or equal symbol, represents the level of recent movement of a particular threat. Up arrows represent an increase, down arrows represent a decline and the equal symbol represent no change to a threat's recent movement.
% Impact (Last 7 Days): This demonstrates a 7-day period change in the frequency of a malware threat infecting PCs. The percentage impact correlates directly to the current Trend Path to determine a rise or decline in the percentage.
| Threat Level: | 8/10 |
|---|---|
| Infected PCs: | 30 |
| First Seen: | November 2, 2011 |
|---|---|
| OS(es) Affected: | Windows |
Win32/Olmasco.R is a new and upgraded version of a rootkit that's derived from the code of the TDL family of rootkits, which includes such infamous examples as the TDL2 rootkit, the TDL3 rootkit and the TDL4 rootkit. Win32/Olmasco.R infections present all the hazards of a standard backdoor Trojan and can be configured to change your computer's settings, install malicious software, block security-related software or launch themselves without permission. Besides these credible threats to Windows computers, Win32/Olmasco.R has also been improved to utilize advanced stealth and self-defensive features that may make Win32/Olmasco.R difficult to remove with anything less than the most potent of anti-malware programs. Since Win32/Olmasco.R may not show obvious signs of being active despite its activities, you shouldn't be hesitant to use trustworthy anti-malware scanners if you need to detect a potential Win32/Olmasco.R infection.
Why You May Not See Win32/Olmasco.R Until the Damage Has Been Done
Win32/Olmasco.R is built off of an advanced foundation of malicious rootkit-level functions that load themselves automatically and conceal their attacks even while they're taking out your computer's security and privacy features. The Win32/Olmasco.R variant of TDL4 has also been upgraded to be able to avoid detection from many types of anti-malware programs, and you should be careful to keep your security and AV products up-to-date if you want to have any hope of identifying a possible Win32/Olmasco.R infection.
By corrupting the Master Boot Record (or MBR), Win32/Olmasco.R launches before Windows even begins to load and remains hidden in the background while you carry out your work. Recent versions of rootkits from this family, including Win32/Olmasco.R, have also added functions that allow them to utilize Kad P2P networks for their attacks and protect the corrupted MBR from being cleansed. Even 64-bit Windows operating systems aren't safe from Win32/Olmasco.R and TDL4 attacks.
In addition to possessing appropriate security and anti-malware programs, you should also avoid dangerous websites, untrustworthy files and links from unusual sources, since these can all be methods of Win32/Olmasco.R transmission. However, no defense against Win32/Olmasco.R is flawless, and SpywareRemove.com malware experts also recommend that you be ready to find and delete Win32/Olmasco.R with the right anti-malware scanner at a moment's notice to minimize damage to your PC.
The Invisible Threat of a Reinforced Win32/Olmasco.R Rootkit
Although you may not see any symptoms of Win32/Olmasco.R even while Win32/Olmasco.R is attacking your PC, any active Win32/Olmasco.R rootkit is a very real threat to your computer's privacy and safety. Win32/Olmasco.R can be reconfigured to cause a variety of problems, but SpywareRemove.com malware researchers advise you to be prepared for:
- The installation of other forms of harmful software. This can include keyloggers that record and steal your keyboard input, rogue security programs that create fake infection alerts or browser hijackers that redirect you to malicious websites.
- System settings that have been altered to reduce the security of your PC. Your network ports may be opened, or your Windows Firewall may have unusual exceptions added to it.
- Blocked security and anti-malware programs, or instances where these programs fail to function (for instance, by crashing or failing to remove an infection).
Since deleting Win32/Olmasco.R without the very anti-malware programs that Win32/Olmasco.R may be blocking is extremely difficult, SpywareRemove.com malware experts recommend that you use Safe Mode or boot from an external drive to stop Win32/Olmasco.R from launching itself. This will let you take the appropriate actions to clean Win32/Olmasco.R out of your PC, before lasting harm is done to your information, finances or files.
Technical Details
File System Modifications
Tutorials: If you wish to learn how to remove malware components manually, you can read the tutorials on how to find malware, kill unwanted processes, remove malicious DLLs and delete other harmful files. Always be sure to back up your PC before making any changes.
The following files were created in the system:Krusty.exe
File name: Krusty.exeSize: 480.76 KB (480768 bytes)
MD5: 7580fb0b136ab7b2cc167b65b7a98986
Detection count: 33
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: November 7, 2011
Krusty.exe
File name: Krusty.exeSize: 327.68 KB (327680 bytes)
MD5: a7fc3257e7c9d3b4571f93b1788205ca
Detection count: 32
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: November 7, 2011
Krusty.exe
File name: Krusty.exeSize: 344.06 KB (344064 bytes)
MD5: 58c6acd118b76fbb44deac79da5ed2ff
Detection count: 31
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: November 7, 2011
Krusty.exe
File name: Krusty.exeSize: 110.29 KB (110299 bytes)
MD5: 17f580bfc2c068916245585847596f99
Detection count: 30
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: November 7, 2011
Krusty.exe
File name: Krusty.exeSize: 132.89 KB (132891 bytes)
MD5: b8a7d3e95c64f088769c4f6399fb2a0d
Detection count: 29
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
Last Updated: November 7, 2011
%temp%\%RANDOM CHARACTERS%.tmp
File name: %temp%\%RANDOM CHARACTERS%.tmpFile type: Temporary File
Mime Type: unknown/tmp
Group: Malware file
%temp%\MRT.exe
File name: %temp%\MRT.exeFile type: Executable File
Mime Type: unknown/exe
Group: Malware file
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