Monthly Threat Report: September 2014

Top_10_ELG_sep_14_1200x627eng

The Top Ten Threats

 

1. HTML/Refresh
Previous Ranking: N/A
Percentage Detected: 3.89%

HTML/Refresh is a Trojan that redirects the browser to a specific URL location with malicious software. The program code of the malware is usually embedded in HTML pages.

 

2. Win32/Bundpil
Previous Ranking: 1
Percentage Detected: 2.29%

Win32/Bundpil.A is a worm that spreads via removable media. The worm contains an URL address from which it tries to download several files. The files are then executed and HTTP protocol is used for comunication with the C&C to receive new commands. The worm may delete the following folders:

*.exe
*.vbs
*.pif
*.cmd
*Backup.

 

3. JS/Kryptik.I
Previous Ranking: 2
Percentage Detected: 2.03%

JS/Kryptik is a generic detection of malicious obfuscated JavaScript code embedded in HTML pages; it usually redirects the browser to a malicious URL or implements a specific exploit.

 

4. Win32/Adware.MultiPlug
Previous Ranking: 3
Percentage Detected: 1.88%

Win32/Adware.Multiplug is a Possible Unwanted Application that once it’s present into the users system might cause applications to displays advertising popup windows during internet browsing.

 

5. Win32/RiskWare.NetFilter
Previous Ranking: 4
Percentage Detected: 1.52%

Win32/RiskWare.NetFilter is an application that includes malicious code designed to force infected computers to allow an attacker to remotely connect to the infected system and control it, in order to steal sensitive information or install other malware.

 

6. LNK/Agent.AK
Previous Ranking: 5
Percentage Detected: 1.46%

LNK/Agent.AK is a link that concatenates commands to execute legitimate code while running the threat code in the background. It is similar in its effect to the older autorun.inf type of threat. This vulnerability became known at the time of discovery of Stuxnet, as it was one of four vulnerabilities that were executed by Stuxnet variants.

 

7. Win32/Sality
Previous Ranking: 6
Percentage Detected: 1.36%

Sality is a polymorphic file infector. When executed it starts a service and created/deleted registry keys related to security applications activite in the system and to ensure that the malicious process restarts at each reboot of operating system.

It modifies EXE and SCR files and disables services and processes implemented by and associated with security solutions.

More information relating to a specific signature: http://www.eset.eu/encyclopaedia/sality_nar_virus__sality_aa_sality_am_sality_ah

 

8. HTML/Iframe
Previous Ranking: N/A
Percentage Detected: 1.34%

Type of infiltration: Virus

HTML/Iframe.B is generic detection of malicious IFRAME tags embedded in HTML pages, which redirect the browser to a specific URL location with malicious software.

 

9. Win32/Danger.DoubleExtension
Previous Ranking: N/A
Percentage Detected: 1.26%

Win32/Danger.DoubleExtension is the name for generic detection of file using two or more extensions in filename (to appear to be document/picture file etc.) while the real file format is PE32. The last file extension has executable form.

 

10. INF/Autorun
Previous Ranking: 7
Percentage Detected: 1.2%

INF/Autorun is a generic detection of versions of the autorun.inf configuration file created by malware. The malicious AUTORUN.INF file contains the path to the malware executable. This file is usually dropped into the root folder of all the available drives in an attempt to autorun a malware executable when the infected drive is mounted. The AUTORUN.INF file(s) may have the System (S) and Hidden (H) attributes present in an attempt to hide the file from Windows Explorer.

 


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