Worm.Win32.Ainslot.VB_1f2e1e569c

Dynamic Analysis

Payload

Behaviour	Description
WormAutorun	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.

Process activity

The Worm creates the following process(es):

1f2e1e569c971fc3d3124b9aa5ecae6d.exe:1260
reg.exe:968
reg.exe:960
reg.exe:588
reg.exe:1088

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

1f2e1e569c971fc3d3124b9aa5ecae6d.exe:1040

File activity

The process 1f2e1e569c971fc3d3124b9aa5ecae6d.exe:1040 makes changes in a file system.

The Worm creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\Garenacheats.exe (1633 bytes)
%Documents and Settings%\%current user%\Application Data\update06 (33 bytes)

Registry activity

The process 1f2e1e569c971fc3d3124b9aa5ecae6d.exe:1040 makes changes in a system registry.

The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F8 A4 61 65 AC 10 D1 C9 12 42 37 FC FD BB E8 AF"

[HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{BBE8F9CD-6CAE-5FA7-EC3C-FDDEEF68E05A}]
"StubPath" = "%Documents and Settings%\%current user%\Application Data\Garenacheats.exe"

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

[HKCU\Software\VB and VBA Program Settings\INSTALL\DATE]
"O1Y024CAMP" = "August 27, 2013"

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

[HKCU\Software\Microsoft\Active Setup\Installed Components\{BBE8F9CD-6CAE-5FA7-EC3C-FDDEEF68E05A}]
"StubPath" = "%Documents and Settings%\%current user%\Application Data\Garenacheats.exe"

[HKCU\Software\VB and VBA Program Settings\SrvID\ID]
"O1Y024CAMP" = "update07"

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]
"wintester" = "%Documents and Settings%\%current user%\Application Data\Garenacheats.exe"

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

The process reg.exe:968 makes changes in a system registry.

The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "69 03 08 FD 62 CA 66 98 50 24 33 0B FE F7 4C 9E"

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

The process reg.exe:960 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 F3 48 0A C4 57 4B 1B E2 45 86 A9 C5 B1 27 90"

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

The process reg.exe:588 makes changes in a system registry.

The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "8C 22 EB 24 95 2B 84 67 32 80 01 A6 E8 B1 00 DA"

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

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\c:]
"1f2e1e569c971fc3d3124b9aa5ecae6d.exe" = "c:\1f2e1e569c971fc3d3124b9aa5ecae6d.exe:*:Enabled:Windows Messanger"

The process reg.exe:1088 makes changes in a system registry.

The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C8 C0 DF 4E 29 9A A3 F5 B2 56 68 33 D9 22 43 25"

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

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.

Removals

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):

   1f2e1e569c971fc3d3124b9aa5ecae6d.exe:1260
   reg.exe:968
   reg.exe:960
   reg.exe:588
   reg.exe:1088

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\Garenacheats.exe (1633 bytes)
   %Documents and Settings%\%current user%\Application Data\update06 (33 bytes)

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

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

Static Analysis

Network Activity

Map

Strings from Dumps