Njw0rm

Posted: September 9, 2013

Threat Metric

The Threat Meter is a malware assessment that SpywareRemove.com's research team is able to give every identifiable malware threat. Our Threat Meter includes several criteria based off of specific malware threats to value their severity, reach and volume. The Threat Meter is able to give you a numerical breakdown of each threat's initial Threat Level, Detection Count, Volume Count, Trend Path and Percentage Impact. The overall ranking of each threat in the Threat Meter is a basic breakdown of how all threats are ranked within our own extensive malware database. The scoring for each specific malware threat can be easily compared to other emerging threats to draw a contrast in its particular severity. The Threat Meter is a useful tool in the endeavor of seeking a solution to remove a threat or pursue additional analytical research for all types of computer users.

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.

Ranking:	16,982
Threat Level:	5/10
Infected PCs:	143

First Seen:	September 9, 2013
Last Seen:	October 13, 2023
OS(es) Affected:	Windows

Njw0rm is an updated version of njRAT, a Remote Access Tool and backdoor Trojan that compromises your PC for future attacks while also stealing personal information. Njw0rm is especially known for targeting passwords for various applications and accounts, and, like most worms, also may spread effectively through any removable devices (USB drives, writable DVDs, etc) by creating disguised copies of itself. Because Njw0rm is a high-level threat that is receiving regular maintenance and updates, SpywareRemove.com malware researchers advise the use of updated anti-malware tools for detecting and deleting Njw0rm from your PC – including any copies of itself that may have been created after the original infection.

Njw0rm: a Self-Duplicating Parasite with an Appetite for Logins

Njw0rm is a Middle Eastern worm crafted by what is believed to be a Kuwait-based hacker-for-hire, and both Njw0rm's Command & Control servers and its attacks are centered around that region – at least, for now. As an updated version of njRAT, Njw0rm still includes basic backdoor functions that allow criminals to command Njw0rm to initiate various attacks, receive any stolen information or instruct Njw0rm to download and install new malware. The servers used by Njw0rm worms are reconfigurable, and this detail along with other circumstantial evidence has led to SpywareRemove.com malware experts estimating that Njw0rm is intended to be a black market business project that's rented out to other criminals, rather than the personal cyber-attack tool of its developer.

Whatever its overarching purpose may be, Njw0rm is capable of stealing any Web browser-stored passwords and includes basic decryption capabilities to translate these same passwords. Passwords for the FileZilla FTP client and the No-IP dynamic DNS service accounts also may be stolen. Since many malware authors make use of dynamic DNS services for their C&C server communications, that last target is noteworthy for being a potential attempt at reconnoitering competing malware.

Finally, Njw0rm also creates new copies of itself in USB thumb drives and other removable devices (assuming that they have sufficient hard drive space for the process). Since these copies are disguised as preexisting folders, a new user easily may launch a copy of Njw0rm and infect a second PC without being aware that they've done anything wrong.

Keeping an Eye on the Worm that Hopes to Slip in with Your E-mail

Thus far, Njw0rm has not been seen being used in any targeted attacks against corporate or government entities, which is the usual modus operandi for sophisticated worms with backdoor and spyware functions. However, some initial infection vectors for Njw0rm worms have been identified, including hurtful e-mail messages that provide redirects to websites using drive-by-downloads to install Njw0rm automatically. SpywareRemove.com malware researchers remind all readers that following links in e-mail messages or downloading files from them without double-checking their sources always is a bad security practice. Relevant anti-malware tools should be adept at blocking these attacks and removing all copies of Njw0rm, if necessary.

Because of Njw0rm's predilection for whetting its appetite on account passwords, you should be careful to change any potentially compromised passwords once you've finished removing a Njw0rm infection. Particular care should be taken to prevent any website accounts or FTP accounts from being hacked in the future, especially for users of FileZilla.

Njw0rm

Threat Metric

Njw0rm: a Self-Duplicating Parasite with an Appetite for Logins

Keeping an Eye on the Worm that Hopes to Slip in with Your E-mail

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