MD5: a4545fda14181a25f0467a0ef3edda61
SHA1: cea5525d2b545778763a500d337a3dc9af1f28ee
SHA256: 2c25e8ccbcdc806752eff103bcfed34d4578b03a02f3b3ee34d22a223e0bf704
SSDeep: 12288:aBBFGW9LetSg8r5IkssHcUepjv9QFjjMw3E3k4MlRVZQrKlPWaUAjSAPVY3Goe:PRkbrSgBepjvOAhk48RVZMKlUGPVf
Size: 755712 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6
Company: no certificate found
Created at: 2011-07-23 18:25:40
Analyzed on: WindowsXP SP3 32-bit

Summary:

Worm. A program that is primarily replicating on networks or removable drives.

Payload

Process activity

The Worm creates the following process(es):

%original file name%.exe:1420
reg.exe:436
reg.exe:1580
reg.exe:448
reg.exe:516

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

%original file name%.exe:184

File activity

The process %original file name%.exe:1420 makes changes in the file system.
The Worm creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\uFAw2LfDcMUp.exe (5441 bytes)

The process %original file name%.exe:184 makes changes in the file system.
The Worm creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\WinLogon.exe (1913 bytes)
%Documents and Settings%\%current user%\Application Data\data.dat (34 bytes)

Registry activity

The process %original file name%.exe:1420 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "64 31 46 73 34 6D F9 65 56 42 B3 0E 08 17 7A BB"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
"Hidden" = "2"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

To automatically run itself each time Windows is booted, the Worm adds the following link to its file to the system registry autorun key:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"Graphic Driver" = "%Documents and Settings%\%current user%\Application Data\uFAw2LfDcMUp.exe"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Audio Device" = "%Documents and Settings%\%current user%\Application Data\uFAw2LfDcMUp.exe"

The process %original file name%.exe:184 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "B3 9F B2 4B 48 47 99 33 F6 DF 25 70 C1 C8 99 A8"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

[HKCU\Software\VB and VBA Program Settings\SrvID\ID]
"NE7QGLU2WN" = "23.07"

[HKCU\Software\VB and VBA Program Settings\INSTALL\DATE]
"NE7QGLU2WN" = "December 15, 2013"

The process reg.exe:436 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "81 92 E4 8A E0 90 42 6B CD 7E 50 C6 91 BA E4 E2"

Adds a rule to the firewall Windows which allows any network activity:

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\c:]
"%original file name%.exe" = "c:\%original file name%.exe:*:Enabled:Windows Messanger"

The process reg.exe:1580 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "2A 38 A9 36 32 9D 19 F4 04 AA E8 6C FB F1 C1 D7"

Adds a rule to the firewall Windows which allows any network activity:

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\%Documents and Settings%\%current user%\Application Data]
"WinLogon.exe" = "%Documents and Settings%\%current user%\Application Data\WinLogon.exe:*:Enabled:Windows Messanger"

The process reg.exe:448 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "72 75 81 D1 E7 D7 3E 3A B2 21 72 21 D2 AF 61 A3"

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DoNotAllowExceptions" = "0"

The process reg.exe:516 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C6 52 70 E6 03 08 2D 3E 4B 0C 8A C2 9A 7F 38 A9"

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DoNotAllowExceptions" = "0"

Network activity (URLs)

No activity has been detected.

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

A worm can spread via removable drives. It writes its executable and creates "autorun.inf" scripts on all removable drives. The autorun script will execute the Worm's file once a user opens a drive's folder in Windows Explorer.

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. Terminate malicious process(es) (How to End a Process With the Task Manager):
   

   %original file name%.exe:1420
   reg.exe:436
   reg.exe:1580
   reg.exe:448
   reg.exe:516

2. Delete the original Worm file.
   
3. Delete or disinfect the following files created/modified by the Worm:
   

   %Documents and Settings%\%current user%\Application Data\uFAw2LfDcMUp.exe (5441 bytes)
   %Documents and Settings%\%current user%\Application Data\WinLogon.exe (1913 bytes)
   %Documents and Settings%\%current user%\Application Data\data.dat (34 bytes)

4. Delete the following value(s) in the autorun key (How to Work with System Registry):
   

   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   "Graphic Driver" = "%Documents and Settings%\%current user%\Application Data\uFAw2LfDcMUp.exe"
   
   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "Audio Device" = "%Documents and Settings%\%current user%\Application Data\uFAw2LfDcMUp.exe"

5. Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
   
6. Reboot the computer.
   

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