MD5: 598fd08a9d4d6fa9ba3464759634888c
SHA1: 940c2452c0b547b1933587e9b301754de2242142
SHA256: 410359dbf7fd5f3ef5e2bb7acbd44baf635b0c2ca67c5e126b96a3334201b2c5
SSDeep: 1536:CVEpsVpOhtgZKMd82cXVfaFXuoraLo0mxgFy:7sVpyzM8xaFXuowbogFy
Size: 79872 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: Rapiddown
Created at: 2010-02-23 13:34:15
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):

%original file name%.exe:1760

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

spoolsv.exe:1444

File activity

The process spoolsv.exe:1444 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%WinDir%\Temp\4A.tmp (28160 bytes)

The Trojan deletes the following file(s):

%WinDir%\Temp\4A.tmp (0 bytes)

The process %original file name%.exe:1760 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp (8192 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\48.tmp (79872 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\49.tmp (0 bytes)

Registry activity

The process spoolsv.exe:1444 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\System\CurrentControlSet\Services\lnsvmkosetuiqdm]
"Type" = "1"

[HKLM\System\CurrentControlSet\Control\Session Manager]
"PendingFileRenameOperations" = "\??\C:\DOCUME~1\test\LOCALS~1\Temp\4B.tmp, , \??\%WinDir%\TEMP\4C.tmp,"

[HKLM\System\CurrentControlSet\Control\Print\Providers]
"Order" = "LanMan Print Services, Internet Print Provider, tdl"

[HKLM\System\CurrentControlSet\Services\lnsvmkosetuiqdm]
"ImagePath" = "\??\%WinDir%\TEMP\4A.tmp"

[HKLM\System\CurrentControlSet\Control\Print\Providers\tdl]
"Name" = "C:\DOCUME~1\test\LOCALS~1\Temp\49.tmp"

The Trojan deletes the following registry key(s):

[HKLM\System\CurrentControlSet\Services\lnsvmkosetuiqdm]
[HKLM\System\CurrentControlSet\Services\lnsvmkosetuiqdm\Enum]
[HKLM\System\CurrentControlSet\Control\Print\Providers\tdl]

The process %original file name%.exe:1760 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "33 9E 3C 1D 52 4D F9 DB 09 9C 87 A1 7E CC 01 B8"

[HKLM\System\CurrentControlSet\Control\Session Manager]
"PendingFileRenameOperations" = "\??\C:\DOCUME~1\test\LOCALS~1\Temp\4B.tmp,"

Network activity (URLs)

No activity has been detected.

HOSTS file anomalies

No changes have been detected.

Rootkit activity

Using the driver "UNKNOWN" the Trojan controls loading executable images into a memory by installing the Load image notifier.

The Trojan intercepts DriverStartIO in a miniport driver of a hard drive controller (ATAPI) to handle request to its own files:

StartIo

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. Scan a system with an anti-rootkit tool.
   
2. Terminate malicious process(es) (How to End a Process With the Task Manager):
   

   %original file name%.exe:1760

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

   %WinDir%\Temp\4A.tmp (28160 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp (8192 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\48.tmp (79872 bytes)

5. Reboot the computer.
   

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