Submission Summary:

What's been foundSeverity Level
Capability to block security-related software by modifying firewall settings and by disabling security services, such as Windows Update, Norton Autoprotect, Kaspersky Anti-Virus, etc.
Produces outbound traffic.
There were some system executable files modified, which might indicate the presence of a PE-file infector.
Contains characteristics of an identified security risk.

 

Technical Details:

 

Possible Security Risk

Threat CategoryDescription
A virus capable to modify other files by infecting, prepending, or overwriting them them with its own body

 

File System Modifications

#Filename(s)File SizeFile HashAlias
1 %System%\nannaa.exe
[file and pathname of the sample #1]
76,691 bytes MD5: 0x3A714820017D3AA3CBDB8B027F39B842
SHA-1: 0xF3969EA50C1AE7F9A4092EF01A9B9B1E832A3B99
DDoS:Win32/Nitol.A [Microsoft]

 

Memory Modifications

Process NameProcess FilenameMain Module Size
nannaa.exe%System%\nannaa.exe12,963,840 bytes
[filename of the sample #1][file and pathname of the sample #1]12,963,840 bytes

Service NameDisplay NameStatusService Filename
NationalsbwNationalsbl Instruments Domain Service"Running"%System%\nannaa.exe

 

Registry Modifications

 

Other details

PortProtocolProcess
1035TCPnannaa.exe (%System%\nannaa.exe)

Remote HostPort Number
123.111.110.1801597
riexyt.com443

 

Outbound traffic (potentially malicious)

 

 

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