Submission Summary:

What's been foundSeverity Level
Produces outbound traffic.
Contains characteristics of an identified security risk.

 

Technical Details:

 

Possible Security Risk

Threat CategoryDescription
A malicious backdoor trojan that runs in the background and allows remote access to the compromised system

 

File System Modifications

#Filename(s)File SizeFile HashAlias
1 %AppData%\Microsoft\Installer\{B53D42E8-872B-430E-82D4-80065A31FCE1}\lpk.dll
[pathname with a string SHARE]\lpk.dll
[pathname with a string SHARE]\lpk.dll
[pathname with a string SHARE]\lpk.dll
%ProgramFiles%\Internet Explorer\Connection Wizard\lpk.dll
%ProgramFiles%\Internet Explorer\lpk.dll
%ProgramFiles%\Messenger\lpk.dll
%System%\gei33.dll
72,192 bytes MD5: 0xD2BAA2F8ADAEF100FA631AB895EB38A4
SHA-1: 0x7E32A5EA496C62102531D98B8342A19A2BF471E7
Backdoor.Trojan [Symantec]
Mal/Nitol-C [Sophos]
2 %Temp%\SOFTWARE.LOG
%System%\rebfec.exe
59,392 bytes MD5: 0x804EAE66238FC071E2D18C6892CA33F3
SHA-1: 0xACFD10C933CF1242F6DB5A4DACE7225C7BD6EAA9
(not available)

 

Memory Modifications

Process NameProcess FilenameMain Module Size
rebfec.exe%System%\rebfec.exe86,016 bytes
[filename of the sample #1][file and pathname of the sample #1]86,016 bytes

Module NameModule FilenameAddress Space Details
gei33.dll%System%\gei33.dllProcess name: rebfec.exe
Process filename: %System%\rebfec.exe
Address space: 0x3E0000 - 0x3F6000

Service NameDisplay NameStatusService Filename
aspnet_statesufoASP.NET State Serviceslcg Transaction Coordinator Service"Running"%System%\rebfec.exe

 

Registry Modifications

 

Other details

China

PortProtocolProcess
1033TCPrebfec.exe (%System%\rebfec.exe)
1034TCPrebfec.exe (%System%\rebfec.exe)
1035TCPrebfec.exe (%System%\rebfec.exe)

Remote HostPort Number
122.10.82.2312019
rat2.100geili.com8000
rat3.100geili.com9000

 

Outbound traffic (potentially malicious)

 

 

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