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Trojan:Win32/Joinkjot.A

First posted on 16 September 2014.
Source: Microsoft

Aliases :

There are no other names known for Trojan:Win32/Joinkjot.A.

Explanation :

Threat behavior

Installation

Trojan:Win32/Joinkjot.A copies itself to the following locations:

• c:\documents and settings\administrator\application data\bsxixqnuiujvw.exe
• c:\documents and settings\administrator\start menu\programs\startup\bifukjnfy.exe

The malware changes the following registry entries so that it runs each time you start your PC:

In subkey: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Sets value: "vlwjzrxaapmhvhesg"
With data: "c:\documents and settings\administrator\application data\bsxixqnuiujvw.exe"

Payload

Contacts remote hosts

Trojan:Win32/Joinkjot.A may contact the following remote hosts using port 80:

• 162.26.240.44
• 90.119.140.122

Commonly, malware does this to:

• Confirm Internet connectivity
• Report a new infection to its author
• Receive configuration or other data
• Download and run files, including updates or other malware
• Receive instructions from a remote hacker
• Upload data taken from your PC

This malware description was produced and published using automated analysis of file SHA1 5a73fd3ee6ce63a57832ac03c1319cb704bfa83d.Symptoms

System changes

The following could indicate that you have this threat on your PC:

• You have these files:
  
  c:\documents and settings\administrator\application data\bsxixqnuiujvw.exe
  c:\documents and settings\administrator\start menu\programs\startup\bifukjnfy.exe

• You see these entries or keys in your registry:

Sets value: "vlwjzrxaapmhvhesg"
With data: "c:\documents and settings\administrator\application data\bsxixqnuiujvw.exe"
In subkey: HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run

Last update 16 September 2014

 

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