Danger level 8
Type: Malware
Common infection symptoms:
  • Annoying Pop-up's
  • Connects to the internet without permission
  • Installs itself without permissions
  • Normal system programs crash immediatelly
  • Slow Computer


Mal/Katusha-F is a Trojan downloader which mainly infect computer through spam emails. Once in the system, the Trojan slows down the computer’s processes, hides its components and tries to put its developers’ plans into actions. As the malicious software is worthless, it is important to remove it and other potential threats that may be present on your computer. The fact that your system may have more malware is probable, because this Trojan can download additional malware onto your PC.

Mal/Katusha-F, a.k.a. TrojanDownloader:Win32/Karagany.L, may be programmed to connect to infected websites and download malware, which may cause irreparable damage to the computer. Do not get surprised if you find that the system does not operate as usually, because it is likely that the infection can disable some processes and inject its own ones. Moreover, the threat may monitor and collect sensitive information; hence, keep in mind that if you do not remove Mal/Katusha-F, your usernames and passwords may be stolen by the developers of the Trojan.

As the infection can penetrate into the system through infected spam email attachments, note that you should not trust an email letter that has a subject line “Charter flight reservation.” So far, three versions of the email are known to the public. Each message contains misinformation about booked flights and indicates that more information is given in an attached file called Report-D9935.zip. Below, you will find the introductory lines from each of the spam message. Note the spelling mistakes:

Your secreatry has reserved a charter flight for 53 persons.

Your secreatry has reserved a charter flight for 44 persons.

Your secreatry has reserved a charter flight for 9 persons.

If you open such one of the messages and see that content of the text does not have anything to do with you and your activity, delete the message, especially if you are not planning a plane trip. The file attached to the email may contain malware such as Mal/Katusha-F; hence, be cautious about opening suspicious email, because you do not know what infections you may find.

Consequently, if you have opened the file Report-D9935.zip, scan the system with a spyware removal application to check for other malware. If Mal/Katusha-F is detected on the PC, it will be removed immediately. No components of the infection will be left in the system, which means that there will be no chance for the infection to recover by downloading additional malware. Additionally, the system will be protected against further infections.

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How to manually remove Mal/Katusha-F

Files associated with Mal/Katusha-F infection:


Mal/Katusha-F processes to kill:


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