MD5: f7a09f3251b01fe135667af3b73bdc52
SHA1: bb103f63f1c8ad480899c1a422d0e5370a686565
SHA256: ad28f76bd242f11229ff79562e44f92f5b4a4d03220166c8ca22f2676c600f78
SSDeep: 3072:fl0M2hwxyHdlDap78fw/Fh4jsCsm8N3vtWqucSvO/msxfaTMLGQ3Y:flt4wxyHdlmhOwth4A3IcSvOHp3Y
Size: 155648 bytes
File type: DLL
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2011-07-18 17:52:28
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:596
hrl1.tmp:1536

The Trojan injects its code into the following process(es):
No processes have been created.

File activity

The process regsvr32.exe:596 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 (147 bytes)

The process hrl1.tmp:1536 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%System%\qusoue.exe (673 bytes)

Registry activity

The process regsvr32.exe:596 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "A3 69 5E 6A 35 BE FF 95 A3 51 14 33 BA 53 0C 80"

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
NtDeviceIoControlFile
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:596
   hrl1.tmp:1536
   

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 (147 bytes)
   %System%\qusoue.exe (673 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.