Java.Minesteal

Posted: March 5, 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.

Threat Level:	9/10
Infected PCs:	4

First Seen:	March 5, 2013
OS(es) Affected:	Windows

Java.Minesteal is a Trojan for both Windows and Mac operating systems that steals login credentials for the game Minecraft from the infected computer. Java.Minesteal then encrypts the stolen information and sends it to one of the downloaded email addresses. Java.Minesteal operates on both Windows and Mac platforms. When Java.Minesteal is executed, it downloads two configuration files from the specific locations. The configuration files carry web addresses used to download plugins and an installer module which are copied to the specific locations. Java.Minesteal then creates the potentially malicious files and registry entries so that it can run automatically every time you start the computer. Java.Minesteal downloads a list of email addresses from the particular location.

Aliases

Java/Agent.BR!tr [Fortinet]Trojan.Java.Agent [Ikarus]Java:Agent-CSN [GData]Java/MineStea-A [Sophos]Trojan-PSW:Java/Minesteal.A [F-Secure]UnclassifiedMalware [Comodo]Java.Minesteal [Symantec]

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:

%APPDATA%\SysJar\minesender.jar

File name: minesender.jar
Size: 551.1 KB (551105 bytes)
MD5: 72036fd41340570ee16c24cafdfd991d
Detection count: 4
Mime Type: unknown/jar
Path: %APPDATA%\SysJar
Group: Malware file
Last Updated: March 21, 2013

$HOME/Library/LaunchAgents/[PLUGIN NAME].plist

File name: $HOME/Library/LaunchAgents/[PLUGIN NAME].plist
Mime Type: unknown/plist
Group: Malware file

$HOME/Library/LaunchAgents/SysJar.plist

File name: $HOME/Library/LaunchAgents/SysJar.plist
Mime Type: unknown/plist
Group: Malware file

Registry Modifications

The following newly produced Registry Values are:

HKEY..\..\..\..{Subkeys}HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\SysJarHKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Run\[PLUGIN NAME]