Merond.AC_2 is a Trojan. A Trojan is a program that pretends to have a valid use, but in fact modifies the user's computer in malicious way. Trojans do not replicate or spread to other computers.
File Related Changes
It drops the following file(s) on the system:
- "c:\Windows\System32\rundll41.exe"
- "c:\Users\Admin\AppData\Roaming\SystemProc\lsass.exe"
- "c:\Windows\System32\Googlunp.exe"
Process Related Changes
It creates the following mutex(es):
- "Local\_!MSFTHISTORY!_"
- "SERPv2"
- "Googlunp.exeDm28sf0V@XK$NX8hOu"
It creates the following process(es): - C:\Users\Admin\AppData\Roaming\SystemProc\lsass.exe
- C:\Windows\system32\rundll41.exe
Network Activity
It attempts to connect to the following remote servers: - www.whatismyip.com:80 (190.93.xxxxxx)
We observed the following DNS query/queries: - mail.microsoft.com
- CMU-MX-01.ANDREW.cmu.edu
- bar.foo
- mail-in100.apple.com
- mx.microsoft.com
- CMU-MX-02.ANDREW.cmu.edu
- python.org
- mail-in2.apple.com
- mail-in5.apple.com
- apple.com
- microsoft.com
- mail-in21.apple.com
- mail-in24.apple.com
- www.whatismyip.com
- CMU-MX-04.ANDREW.cmu.edu
- mail-in23.apple.com
- mail.python.org
- mail-in25.apple.com
- mail-in6.apple.com
- microsoft-com.mail.protection.outlook.com
- mail-in7.apple.com
- cmu.edu
- mail-in22.apple.com
- unicode.org
- mail-in4.apple.com
The sample sends Spam mails to a number of sources
Registry Related Changes
It makes the following registry modifications to ensure infection after system reboot: - HKCU\Software\Microsoft\Windows\CurrentVersion\Run\rthdbpl = C:\Users\Admin\AppData\Roaming\SystemProc\lsass.exe
- HKCU\Software\Microsoft\Windows\CurrentVersion\Run\googleupdaterupnp = C:\Windows\system32\Googlunp.exe
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