MD5: 8d3b36d94a1fb93db2d19bf8e08c2446
SHA1: 404ee2d63b559d167b3cf15e8f09e10345a510c8
SHA256: 11e60b58f1d8697b84e178ee28b8e64f051ab55e848bb88f6dfcda6cf38e8844
SSDeep: 3072:bMbTOMnP9vDTXRQo4xR8rrCTk6x4/qEj7kleab:bMfOMPoL2aP2yEXk7
Size: 102759 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: NBIZ Corp.
Created at: 2012-11-19 18:00:23
Analyzed on: WindowsXP SP3 32-bit

Summary:

Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

svcnost.exe:496
%original file name%.exe:1124

The Trojan injects its code into the following process(es):

svcnost.exe:1704

File activity

The process svcnost.exe:1704 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\ntuser.dat (55 bytes)
%Documents and Settings%\%current user%\Application Data\desktop.ini (9 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Application Data\desktop.ini (0 bytes)

The process %original file name%.exe:1124 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%System%\drivers\etc\hosts (5 bytes)

The Trojan deletes the following file(s):

%System%\drivers\etc\hosts (0 bytes)

Registry activity

The process svcnost.exe:1704 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "67 74 91 A1 39 20 7B 13 88 1D AB E4 B5 4E 83 26"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

[HKCU\Software\Microsoft\Internet Explorer\LowRegistry]
"SavedLegacySettingsML" = "35 36 37 31 34 38 36 39 37"

Adds a rule to the firewall Windows which allows any network activity:

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\c:\documents and settings\"%CurrentUserName%"\application data\xojskzqqqecai1ym3ooro13acex3efbw2]
"svcnost.exe" = "c:\documents and settings\"%CurrentUserName%"\application data\xojskzqqqecai1ym3ooro13acex3efbw2\svcnost.exe:*:Enabled:ldrsoft"

The process %original file name%.exe:1124 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Windows Init" = "%Documents and Settings%\%current user%\Application Data\xojskzqqqecai1ym3ooro13acex3efbw2\svcnost.exe"

Network activity (URLs)

No activity has been detected.

HOSTS file anomalies

The Trojan modifies "%System%\drivers\etc\hosts" file which is used to translate DNS entries to IP addresses.
The modified file is 5915 bytes in size. The following strings are added to the hosts file listed below:

Rootkit activity

No anomalies have been detected.

Propagation

Remove it with Ad-Aware

1. Click (here) to download and install Ad-Aware Free Antivirus.
2. Update the definition files.
3. Run a full scan of your computer.

Manual removal*

1. Terminate malicious process(es) (How to End a Process With the Task Manager):
   

   svcnost.exe:496
   %original file name%.exe:1124
   

2. Delete the original Trojan file.
   
3. Delete or disinfect the following files created/modified by the Trojan:
   

   %Documents and Settings%\%current user%\Application Data\ntuser.dat (55 bytes)
   %Documents and Settings%\%current user%\Application Data\desktop.ini (9 bytes)
   %System%\drivers\etc\hosts (5 bytes)

4. Delete the following value(s) in the autorun key (How to Work with System Registry):
   

   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "Windows Init" = "%Documents and Settings%\%current user%\Application Data\xojskzqqqecai1ym3ooro13acex3efbw2\svcnost.exe"

5. Restore the original content of the HOSTS file (%System%\drivers\etc\hosts):
   127.0.0.1 localhost
   
6. Reboot the computer.
   

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.