Worm.Win32.Ainslot.VB.FD, GenericAutorunWorm.YR, WormAinslot_VariantOfZeus.YR (Lavasoft MAS)Behaviour: Worm, WormAutorun
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: eccf7f117a5b143ff910651c5d713bde
SHA1: 467dae2d43d3d94b9b976688d3ee4da3332aac63
SHA256: dafe6bab4c7e0fa8366bd95bcb9472fcd5275f31d30fdde153508a0ac2b41277
SSDeep: 12288:YXMe29M1qFS3wHJhznwjYe4z3ID89yV cfzPfyBJYCB2F50b/xoXfaKfeV:YXMeW8wHnztcD80V nB CB2F50b/xo6
Size: 1110528 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6
Company: Firseria
Created at: 2013-10-24 01:09:18
Summary: Worm. A program that is primarily replicating on networks or removable drives.
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):
WScript.exe:2376
reg.exe:2936
reg.exe:2956
reg.exe:2932
reg.exe:2948
%original file name%.exe:2436
The Worm injects its code into the following process(es):
AppLaunch.exe:2800
File activity
The process AppLaunch.exe:2800 makes changes in the file system.
The Worm creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Application Data\King (X).exe (59 bytes)
The process WScript.exe:2376 makes changes in the file system.
The Worm deletes the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\1.vbs (0 bytes)
The process %original file name%.exe:2436 makes changes in the file system.
The Worm creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\1.vbs (476 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmp.bat (157 bytes)
Registry activity
The process AppLaunch.exe:2800 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D5 75 D6 48 79 1A 6F 5C 2F F5 A2 20 62 A3 90 86"
[HKCU\Software\VB and VBA Program Settings\INSTALL\DATE]
"37G2JXXMYC" = "November 27, 2013"
[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]
"37G2JXXMYC" = "KiX"
The process WScript.exe:2376 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "66 59 F6 14 9A 3C 3D 5D 14 6C FC 1A 30 F8 56 B0"
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\RunOnce]
"Shell" = "%Documents and Settings%\%current user%\Application Data\%original file name%.exe"
The process reg.exe:2936 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "B5 2E 8A A3 86 BD 87 13 AF 44 07 3F 17 4F B4 CF"
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]
"King (X).exe" = "%Documents and Settings%\%current user%\Application Data\King (X).exe:*:Enabled:Windows Messanger"
The process reg.exe:2956 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "9E B8 79 25 04 11 43 94 66 07 77 0B 55 AB A0 83"
[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DoNotAllowExceptions" = "0"
The process reg.exe:2932 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 FB FE 56 AE EB 9F 34 5F BB 2B 47 D5 FF 92 E1"
[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DoNotAllowExceptions" = "0"
The process reg.exe:2948 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "50 D1 11 1F 5D 8C 7A F3 50 57 69 04 73 39 D1 1F"
Adds a rule to the firewall Windows which allows any network activity:
[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\%WinDir%\Microsoft.NET\Framework\v2.0.50727]
"AppLaunch.exe" = "%WinDir%\Microsoft.NET\Framework\v2.0.50727\AppLaunch.exe:*:Enabled:Windows Messanger"
The process %original file name%.exe:2436 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "0C BF 3E 12 A0 15 C2 A7 F8 DD 35 72 99 E5 3A B3"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{fdd9f6f3-7454-11e2-b4cd-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"AutoDetect" = "1"
[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\{773a730e-74fb-11e2-b597-000c293bdf2f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows Script Host\Settings]
"Enabled" = "1"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{fdd9f6f2-7454-11e2-b4cd-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{fdd9f6f5-7454-11e2-b4cd-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%WinDir%\System32]
"WScript.exe" = "Microsoft (R) Windows Based Script Host"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Desktop" = "%Documents and Settings%\All Users\Desktop"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"
"Personal" = "%Documents and Settings%\%current user%\My Documents"
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:
"ProxyBypass" = "1"
The Worm modifies IE settings for security zones to map all urls to the Intranet Zone:
"IntranetName" = "1"
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.
Removals
Remove it with Ad-Aware
- Click (here) to download and install Ad-Aware Free Antivirus.
- Update the definition files.
- Run a full scan of your computer.
Manual removal*
- Terminate malicious process(es) (How to End a Process With the Task Manager):
WScript.exe:2376
reg.exe:2936
reg.exe:2956
reg.exe:2932
reg.exe:2948
%original file name%.exe:2436 - Delete the original Worm file.
- Delete or disinfect the following files created/modified by the Worm:
%Documents and Settings%\%current user%\Application Data\King (X).exe (59 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\1.vbs (476 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmp.bat (157 bytes) - Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\RunOnce]
"Shell" = "%Documents and Settings%\%current user%\Application Data\%original file name%.exe" - Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
- Reboot the computer.