MD5: a5cb66464a9810c2d167254828974649
SHA1: f82bff372c45dd938946287ada310f3a71f329f9
SHA256: 517cd440d748fc29f77f466b0adc629981aa99fabd3676b8841a7599d8ee0198
SSDeep: 1536:5/koYAAyMznBWHXocQpDRl96FmIJ zQ1esxLRcmRBKMTDH6whI6QqD4IaV:C1PnBWHXocQpDfI0IJKIBRReMTDH3B6
Size: 100864 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: SetApp
Created at: 2010-09-16 14:20:10
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:1084

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\4.tmp (41472 bytes)

The Trojan deletes the following file(s):

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

The process %original file name%.exe:1084 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\2.tmp (100864 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp (8192 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\3.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\mdritnxrpqfatfp]
"Type" = "1"
"ImagePath" = "\??\%WinDir%\TEMP\4.tmp"

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

[HKLM\System\CurrentControlSet\Control\Print\Providers\tdl]
"Name" = "C:\DOCUME~1\test\LOCALS~1\Temp\3.tmp"

The Trojan deletes the following registry key(s):

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

The process %original file name%.exe:1084 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "A5 62 C5 60 48 31 D1 E7 5B 32 B7 0D 65 75 D9 BB"

[HKLM\System\CurrentControlSet\Control\Session Manager]
"PendingFileRenameOperations" = "\??\C:\DOCUME~1\test\LOCALS~1\Temp\5.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.

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

StartIo

Propagation

VersionInfo

No information is available.

PE Sections

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

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:1084

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

   %WinDir%\Temp\4.tmp (41472 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\2.tmp (100864 bytes)
   

5. Reboot the computer.
   

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