MD5: 7366870f2cec55dcf330a894ba5010fd
SHA1: b0b7533685ae22122a94fde88de71eeff4708e8b
SHA256: d693d54aa5be7fad2405a3e1f38a7dc41850581002fcde7e2ae3b18da5bdc70f
SSDeep: 1536:kOog4Lc2CjPmz8P30NnigH7eSBvXe9RIoZJkiHqVsmE7gCzD6vnHnUz4aesJgV4L:kOHfdS6dgSSBv6Hgsh7gI6vnqlI4/zS
Size: 129536 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2010-10-30 08:30:02
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:1608

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

spoolsv.exe:1452

File activity

The process %original file name%.exe:1608 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\1.tmp (129536 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp (16384 bytes)
C:\ (4096 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\2.tmp (0 bytes)

The process spoolsv.exe:1452 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 (4096 bytes)
%WinDir%\Temp\3.tmp (19968 bytes)
%WinDir%\Temp (8192 bytes)

The Trojan deletes the following file(s):

%WinDir%\Temp\3.tmp (0 bytes)

Registry activity

The process %original file name%.exe:1608 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C5 F6 DA 5B 3D 12 01 8A 8B BB 86 64 02 FE 20 9E"

[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"ID" = "1288416602"

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

[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"Name" = "%original file name%.exe"

The process spoolsv.exe:1452 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\System\CurrentControlSet\Control\Print\Providers\hpfypexnvcdtiko]
"Name" = "C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\2.tmp"

[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"ID" = "1208114401"

[HKLM\System\CurrentControlSet\Control\Session Manager]
"PendingFileRenameOperations" = "\??\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\4.tmp, , \??\%WinDir%\TEMP\5.tmp,"

[HKLM\System\CurrentControlSet\Services\ienwentiniwqvow]
"ImagePath" = "\??\%WinDir%\TEMP\3.tmp"

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

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

[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"Name" = "spoolsv.exe"

The Trojan deletes the following registry key(s):

[HKLM\System\CurrentControlSet\Control\Print\Providers\hpfypexnvcdtiko]
[HKLM\System\CurrentControlSet\Services\ienwentiniwqvow]
[HKLM\System\CurrentControlSet\Services\ienwentiniwqvow\Enum]

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:1608
   

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

   %Documents and Settings%\%current user%\Local Settings\Temp\1.tmp (129536 bytes)
   %WinDir%\Temp\3.tmp (19968 bytes)
   

5. Reboot the computer.
   

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