Threat Database Trojans Win32/Olmarik.TDL4


By LoneStar in Trojans

Threat Scorecard

Ranking: 2,799
Threat Level: 10 % (Normal)
Infected Computers: 4,100
First Seen: January 5, 2012
Last Seen: September 19, 2023
OS(es) Affected: Windows

Win32/Olmarik.TDL4 is an extremely dangerous malware infection. Win32/Olmarik.TDL4 is one of the many variants of the TDL4 Rootkit, a malicious invader designed specifically to hide and protect other malware on your computer system and to allow criminals to have an unprecedented level of control over your computer system. If you suspect that your computer system is infected with Win32/Olmarik.TDL4, it is imperative that you seek help immediately, either from a professional or from advanced anti-malware software. Rootkits are designed to conceal themselves from security software and are extremely difficult to remove. In fact, the Win32/Olmarik.TDL4 may reside on the victim's computer system indefinitely without the victim being made aware of its presence. This makes Win32/Olmarik.TDL4 ideal for protecting malware that needs to remain hidden, such as keyloggers and banking Trojans.

How Win32/Olmarik.TDL4 Attacks Your Computer System

Win32/Olmarik.TDL4 hides the presence of other malware from your security software. It also gives Win32/Olmarik.TDL4's controller complete access to your computer system. Usually, Win32/Olmarik.TDL4 is installed after breaching the infected computer's security through social engineering, a worm infection, or the installation of a backdoor Trojan. Once Win32/Olmarik.TDL4 is installed, Win32/Olmarik.TDL4 rootkit can circumvent the infected computer's normal mechanisms for authentication of processes and files. Malware associated with Win32/Olmarik.TDL4 will typically be used to steal passwords while remaining hidden from the computer's owner. The reason why Win32/Olmarik.TDL4 is so difficult to remove is because it is in its nature to disable a typical security application's methods of detections. Usually, to detect Win32/Olmarik.TDL4 it may be necessary to start up Windows from an external source or use advanced memory analysis and scanning methods. Removal of Win32/Olmarik.TDL4 can be extremely complicated; in fact, PC security researchers will often recommend the reinstallation of the operating system to ensure that Win32/Olmarik.TDL4 has been completely removed.
Some ways in which the Win32/Olmarik.TDL4 can be used include the following:

  • Win32/Olmarik.TDL4 can be used as a way for providing a backdoor access to your computer system, by circumventing normal login methods.
  • The Win32/Olmarik.TDL4 can also be used for concealing keyloggers and Trojans by creating an unauthorized partition on your hard drive.
  • A common use of the Win32/Olmarik.TDL4 rootkit is to allow other malware to take over the computer and integrate it into a botnet.

File System Details

Win32/Olmarik.TDL4 may create the following file(s):
# File Name Detections
1. %AllUsersProfile%\Application Data\[RANDOM CHARACTERS].dll
2. %AllUsersProfile%\Application Data\[RANDOM CHARACTERS].exe
3. %WINDOWS%\Minidump\092411-22386-01.dmp
4. %Users%\Vishruth\AppData\Local\Temp\WER-53586-0.sysdata.xml


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