MD5: 33d19f359c6327eaeacbdc53fc98858d
SHA1: eb21eb0893619849da2d135cfa65380ab8cecc0d
SHA256: 18f4ce9b95f1966c3eb475c1475a0e754738caa48c59fe767981cc27e5249617
SSDeep: 24576:pKvijw9uOB/kFWNFpr9PcwYSNFHXbgBjFl/A:povkFsPtpYSN9X8Hl/A
Size: 988448 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2012-10-14 23:14:50

Summary:

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

Payload

Process activity

The Worm creates the following process(es):

reg.exe:812
reg.exe:780
reg.exe:1576
reg.exe:884
33d19f359c6327eaeacbdc53fc98858d.exe:1712

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

33d19f359c6327eaeacbdc53fc98858d.exe:1052

File activity

The process 33d19f359c6327eaeacbdc53fc98858d.exe:1712 makes changes in a file system.
The Worm creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\main.exe (2616 bytes)

The process 33d19f359c6327eaeacbdc53fc98858d.exe:1052 makes changes in a file system.
The Worm creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\Java\keyl (33 bytes)
%Documents and Settings%\%current user%\Application Data\Java\xorfile.exe (3545 bytes)

Registry activity

The process reg.exe:812 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "E4 DD 07 22 C6 A5 0C 62 06 79 92 6F C6 F3 55 5D"

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\Java]
"xorfile.exe" = "%Documents and Settings%\%current user%\Application Data\Java\xorfile.exe:*:Enabled:Windows Messanger"

The process reg.exe:780 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "45 B0 7D 0C 8A 5E 64 D8 CE A1 F7 EA FF 41 9D 76"

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

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\c:\]
"33d19f359c6327eaeacbdc53fc98858d.exe" = "c:\\33d19f359c6327eaeacbdc53fc98858d.exe:*:Enabled:Windows Messanger"

The process reg.exe:1576 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "5C E8 38 EE 1E C6 39 9D 6B E4 EA DF AB 2D 57 89"

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

The process reg.exe:884 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "27 E4 8D 9E 53 9C 52 17 F5 C2 CE AB 3B A0 7B 9A"

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

The process 33d19f359c6327eaeacbdc53fc98858d.exe:1712 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "BC 21 69 C1 4B FC 0F 6F 61 67 8A FB 84 8C 40 47"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Desktop" = "%Documents and Settings%\All Users\Desktop"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp]
"main.exe" = "main"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Personal" = "%Documents and Settings%\%current user%\My Documents"

The Worm modifies IE settings for security zones to map all web-nodes that bypassing proxy to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass" = "1"

The Worm modifies IE settings for security zones to map all urls to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName" = "1"

The Worm modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"UNCAsIntranet" = "1"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"(Default)" = ""

The process 33d19f359c6327eaeacbdc53fc98858d.exe:1052 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "89 AB ED 16 5F 15 B7 90 BE F3 F8 F0 6F EB B5 8A"

[HKCU\Software\VB and VBA Program Settings\SrvID\ID]
"OABJA48A26" = "CCC"

[HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{F9A9EA2C-DC9F-30A4-4DA3-BE8B3B2F11E5}]
"StubPath" = "%Documents and Settings%\%current user%\Application Data\Java\xorfile.exe"

[HKCU\Software\Microsoft\Active Setup\Installed Components\{F9A9EA2C-DC9F-30A4-4DA3-BE8B3B2F11E5}]
"StubPath" = "%Documents and Settings%\%current user%\Application Data\Java\xorfile.exe"

[HKCU\Software\VB and VBA Program Settings\INSTALL\DATE]
"OABJA48A26" = "August 17, 2013"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\run]
"WinXor" = "%Documents and Settings%\%current user%\Application Data\Java\xorfile.exe"

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]
"WinXor" = "%Documents and Settings%\%current user%\Application Data\Java\xorfile.exe"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"WinXor" = "%Documents and Settings%\%current user%\Application Data\Java\xorfile.exe"

Network activity (URLs)

No activity has 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):
   

   reg.exe:812
   reg.exe:780
   reg.exe:1576
   reg.exe:884
   33d19f359c6327eaeacbdc53fc98858d.exe:1712
   

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

   %Documents and Settings%\%current user%\Local Settings\Temp\main.exe (2616 bytes)
   %Documents and Settings%\%current user%\Application Data\Java\keyl (33 bytes)
   %Documents and Settings%\%current user%\Application Data\Java\xorfile.exe (3545 bytes)

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

   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "(Default)" = ""
   
   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   "WinXor" = "%Documents and Settings%\%current user%\Application Data\Java\xorfile.exe"
   
   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "WinXor" = "%Documents and Settings%\%current user%\Application Data\Java\xorfile.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.