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.
Downloads/requests other files from Internet.
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 %Windir%\ccuwco.exe
[file and pathname of the sample #1]
52,224 bytes MD5: 0x0FCA3D634786742A8A58F5C5CCE17BB8
SHA-1: 0x08DD71F1A3893B355F8943CC38660DAECB8F63FA
W32.Virut.CF [Symantec]
Virus.Win32.Virut.ce [Kaspersky Lab]
W32/Virut.n.gen [McAfee]
W32/Scribble-B [Sophos]
Virus:Win32/Virut.BN [Microsoft]
Trojan-Downloader.Win32.Small [Ikarus]

 

Memory Modifications

Process NameProcess FilenameMain Module Size
ccuwco.exe%Windir%\ccuwco.exe98,304 bytes
[filename of the sample #1][file and pathname of the sample #1]98,304 bytes

Service NameDisplay NameStatusService Filename
.Net CLRasfasg124125125"Running"%Windir%\ccuwco.exe

 

Registry Modifications

 

Other details

China

PortProtocolProcess
1035TCPccuwco.exe (%Windir%\ccuwco.exe)
1038TCPccuwco.exe (%Windir%\ccuwco.exe)
1039TCPccuwco.exe (%Windir%\ccuwco.exe)

Remote HostPort Number
107.150.99.921433
cypj520xx.f3322.net8888
vyjwlj.com443
83.133.119.19780

Server NameServer PortConnect as UserConnection Password
127.0.0.280127.0.0.2127.0.0.2
127.0.0.380127.0.0.3127.0.0.3
127.0.0.480127.0.0.4127.0.0.4

 

Outbound traffic (potentially malicious)

 

 

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