MD5: 81409065a6f61c9e8f7fe535297f81ea
SHA1: 3c9dcc1c4baf57d40479d868acbf9e1ad0eb037a
SHA256: 6fa3ab4bc442de6cb376a77b48599d093607b8e0dc31b4fdf6a1da347e89b3c7
SSDeep: 1536:GmVtxwjjK7Tp27GjV3P1Y4l3oyzrmgz6kWZW3EQ90bL:GCqjmNl4yzr9z6kwQiL
Size: 93696 bytes
File type: DLL
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: Fusion Install
Created at: 2010-06-08 12:59:36
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):

regsvr32.exe:1352
hrl1.tmp:2040

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

swwywu.exe:968

File activity

The process regsvr32.exe:1352 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\hrl1.tmp (86 bytes)

The process swwywu.exe:968 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

C:\RCX2.tmp (17660 bytes)
%Documents and Settings%\%current user%\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\lpk.dll (601 bytes)
%Documents and Settings%\%current user%\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\Reader9\lpk.dll (601 bytes)
%Documents and Settings%\All Users\Application Data\Adobe\Reader\9.3\ARM\lpk.dll (601 bytes)
%System%\hra33.dll (7 bytes)

The Trojan deletes the following file(s):

%System%\hra33.dll (0 bytes)

The process hrl1.tmp:2040 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%System%\swwywu.exe (601 bytes)

Registry activity

The process regsvr32.exe:1352 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "26 9B EC A3 1B 24 C0 89 03 C1 D3 9E D0 06 EE 70"

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 734 bytes in size. The following strings are added to the hosts file listed below:

Rootkit activity

The Trojan installs the following user-mode hooks in ntdll.dll:

NtQueryInformationProcess
ZwOpenFile
NtCreateProcessEx
NtCreateProcess
NtCreateFile

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):
   

   regsvr32.exe:1352
   hrl1.tmp:2040

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\hrl1.tmp (86 bytes)
   C:\RCX2.tmp (17660 bytes)
   %Documents and Settings%\%current user%\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\lpk.dll (601 bytes)
   %Documents and Settings%\%current user%\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\Reader9\lpk.dll (601 bytes)
   %Documents and Settings%\All Users\Application Data\Adobe\Reader\9.3\ARM\lpk.dll (601 bytes)
   %System%\hra33.dll (7 bytes)
   %System%\swwywu.exe (601 bytes)

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.