MD5: 634c7916688760f5e098fa12007f7a78
SHA1: 6e567485604f04df2fdcf83153c5d7d2b48c6974
SHA256: f9ba7db564c0221a4fa3de7e1d234652facd9f716b45eaccc210d4f0834f5b1d
SSDeep: 12288:xhMKgS1BJF404u1cQbIwldO1 9zPct9fWTHfiMHGP gpnYMfe3 fsDIHbSz0uV:IE1pp4u2Q8wlsYctp0iSGPXnY6c fsDB
Size: 672369 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2007-03-31 18:09:55

Summary:

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

Payload

Process activity

The Worm creates the following process(es):

634c7916688760f5e098fa12007f7a78.exe:1776
reg.exe:1852
reg.exe:844
reg.exe:680
reg.exe:668

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

Zerr0_Injector_White.exe:1872
InjectorShield.exe:1864

File activity

The process 634c7916688760f5e098fa12007f7a78.exe:1776 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\InjectorShield.exe (3264 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Zerr0_Injector_White.exe (25794 bytes)

The Worm deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\nsz1.tmp (0 bytes)

The process InjectorShield.exe:1864 makes changes in a file system.
The Worm creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\data.dat (33 bytes)

Registry activity

The process 634c7916688760f5e098fa12007f7a78.exe:1776 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "58 55 8E 08 7E 6C 7A 8F A3 C2 07 7E 22 7C 83 05"

[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\ShellNoRoam\MUICache\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp]
"InjectorShield.exe" = "InjectorShield"

[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]
"Zerr0_Injector_White.exe" = "Zerr0_Injector_White"

[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 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"

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 process reg.exe:1852 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "39 C2 17 B9 1C E7 9B 54 96 6A D0 5B B6 4A 73 6F"

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

The process reg.exe:844 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D9 51 9D 03 C8 AF 2E E2 5A 8B 31 86 E4 95 A1 F3"

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

The process reg.exe:680 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "9F 35 95 E2 48 F4 B0 B7 8D 50 B2 E3 82 2D 6D B7"

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

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp]
"InjectorShield.exe" = "C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\InjectorShield.exe:*:Enabled:Windows Messanger"

The process reg.exe:668 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "83 60 05 D4 8D 3D 0E 14 68 F9 BD D3 5A 78 4B 57"

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

The process Zerr0_Injector_White.exe:1872 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "0A 5E 91 5D EF 8B 3D FE 03 8B BD 28 F0 86 5C 4D"

The process InjectorShield.exe:1864 makes changes in a system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "21 52 B8 3B 87 C4 9C DC 86 1A 46 1D 16 A7 3E 3D"

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

[HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{AE7EAACE-FCDB-FE3D-ACEC-A17BE59BEDFA}]
"StubPath" = "%Documents and Settings%\%current user%\Application Data\local.exe"

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

[HKCU\Software\Microsoft\Active Setup\Installed Components\{AE7EAACE-FCDB-FE3D-ACEC-A17BE59BEDFA}]
"StubPath" = "%Documents and Settings%\%current user%\Application Data\local.exe"

[HKCU\Software\VB and VBA Program Settings\INSTALL\DATE]
"LQJ2DN74HS" = "September 4, 2013"

[HKCU\Software\VB and VBA Program Settings\SrvID\ID]
"LQJ2DN74HS" = "Krzljavci"

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]
"WindowsUpdate" = "%Documents and Settings%\%current user%\Application Data\local.exe"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"WindowsUpdate" = "%Documents and Settings%\%current user%\Application Data\local.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):
   

   634c7916688760f5e098fa12007f7a78.exe:1776
   reg.exe:1852
   reg.exe:844
   reg.exe:680
   reg.exe:668
   

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\InjectorShield.exe (3264 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\Zerr0_Injector_White.exe (25794 bytes)
   %Documents and Settings%\%current user%\Application Data\data.dat (33 bytes)

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

   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   "WindowsUpdate" = "%Documents and Settings%\%current user%\Application Data\local.exe"
   
   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "WindowsUpdate" = "%Documents and Settings%\%current user%\Application Data\local.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.