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ChewBacca Malware

Posted: December 19, 2013

Threat Metric

Ranking: 5,661
Threat Level: 2/10
Infected PCs: 4,993
First Seen: December 23, 2013
Last Seen: October 15, 2023
OS(es) Affected: Windows

The ChewBacca Malware, sometimes referred to by the alias of Trojan.Win32.Fsysna.fej, is a spyware program that records keyboard input, most likely to capture passwords and other private information that could be exploited by criminals. Computers compromised by the ChewBacca Malware infections aren't required to show any corresponding symptoms of these attacks, and the ChewBacca Malware also uses anonymity-based means of protecting its servers that make a shutdown unlikely to occur in the near future. Although the ChewBacca Malware's distribution currently is at low numbers, malware researchers recommend that you keep it that way with updated anti-malware products that can detect and remove the ChewBacca Malware without any issues.

The ChewBacca Malware: the Silent Roar of a Thief

The ChewBacca Malware, named for the Star Wars-referencing login menu accessed by its criminal developers, is one of the newer spyware programs to be identified. Although its functions are limited compared to complex threat platforms like Zeus, they're also highly effective at their goals, which involve stealing information while protecting the criminals who are using the ChewBacca Malware software. Unfortunately, the ChewBacca Malware's distribution methods still remain in the dark, and malware experts estimate that the ChewBacca Malware either is intended for niche use or has yet to be distributed en masse to criminal clients willing to use the ChewBacca Malware.

The ChewBacca Malware's primary characteristic, and the one for which the ChewBacca Malware is classified as a spyware program, is its keylogging function. This is similar to the keylogging attacks of PC threats like the LoverSpy Malware, EvilGrab, the Korplug Trojan and, of course, Trojan Zeus. Once the ChewBacca Malware is active, the ChewBacca Malware records the PC user's keystrokes to a log file and is uploaded to a hard-coded server. This lets the ChewBacca Malware easily steal any typed information, such as login names or passwords.

The ChewBacca Malware also is one of the still relatively few Trojans to utilize Tor, an anonymity-providing service that reroutes network communications. Although this does protect the ChewBacca Malware's servers and any criminal users, it also has some limitations, such as making it more likely that other PC security companies will be able to identify the ChewBacca Malware through changes in the Tor network, as well as complicating the ChewBacca Malware's networking activities. Unfortunately for the ChewBacca Malware's victims, these limitations aren't enough to provide any major problems for its keylogging attacks.

Quieting the Sound of a Spy on Your Hard Drive

While the ChewBacca Malware, somewhat ironically, asks its criminal users to 'hear me roar,' malware researchers certainly consider 'hearing' the ChewBacca Malware to be a good idea – since an undetected ChewBacca Malware may pilfer any typed information with ease. Because the ChewBacca Malware is a spyware program and, like all of its ilk, tries to prevent the user of a compromised PC from noticing the ChewBacca Malware, anti-malware software usually may be needed to detect the ChewBacca Malware. Once the ChewBacca Malware is detected, disabling the ChewBacca Malware through any means needed and then deleting the ChewBacca Malware immediately is the obvious and highly recommended solution.

The models of distribution for the ChewBacca Malware still are being examined, although malware experts can confirm that there are no signs of its being distributed for rent to other criminals than the development team, which is one of the most common business models for spyware operations. Till new information arises, protection from the ChewBacca Malware should take all of the general forms that malware experts always would recommend, such as disabling scripts, avoiding risky websites, updating your software and scanning files before opening them.

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:



tor.exe File name: tor.exe
File type: Executable File
Mime Type: unknown/exe
Group: Malware file
system.log File name: system.log
Mime Type: unknown/log
Group: Malware file
sendlog.php File name: sendlog.php
Mime Type: unknown/php
Group: Malware file
recvdata.php File name: recvdata.php
Mime Type: unknown/php
Group: Malware file

Additional Information

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