Trojan.Generic.KD.37749_a5cb66464a

Dynamic Analysis

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

Removals

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.

Static Analysis

VersionInfo

No information is available.

No information is available.

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	4096	10829	11264	4.51611	4ce79431f30e88f3dbb387b16c5139c1
.tls	16384	512	512	0.352222	58ad8b28b91aed0449b4806a462296c5
KDATA	20480	836	1024	2.44624	aa1139c7cf5e3cf644aa2edb22ee77d8
IMPORTS	24576	2864	3072	3.28437	c528b16db44315bd2dfb3bb101e791c7
.rsrc	28672	82540	82944	5.37431	3b932cdc8f3eb52edc733593a316a90a
.reloc	114688	768	1024	2.3611	bfaf27e1295ddc20c95023c9cc99ca93

Network Activity

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Map

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