I-Worm.Nimda
Posted: March 28, 2006
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: | 5/10 |
|---|---|
| Infected PCs: | 63 |
| First Seen: | September 29, 2011 |
|---|---|
| Last Seen: | June 13, 2024 |
| OS(es) Affected: | Windows |
Worm Nimda is a an Internet worm, which spreads in infected e-mails with attached files. There is no need to run an attachment on vulnerable PC: the worm installs itself to the computer immediately when a user opens the infected message for preview. Then it modifies several computer files to start itself automatically with an operating computer and creates lots of infected files on all available local and shared hard disks. For spreading by e-mail it uses remote mail servers and sends infected e-mails to addresses found in a computer. The Nimda worm causes a security breach, so all remote and local users can access and fully control your PC. Infected computers can be used by the worm to infect other vulnerable web servers and personal PCs.
File System Modifications
- The following files were created in the system:
# File Name 1 i-worm.nimda.exe
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