Trojan-Dropper.Win32.Injector.vzv (Kaspersky), Trojan.Win32.Generic!BT (VIPRE), Win32.SuspectCrc!IK (Emsisoft), GenericAutorunWorm.YR, WormAinslot_VariantOfZeus.YR (Lavasoft MAS)Behaviour: Trojan-Dropper, Trojan, Worm, WormAutorun
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: 75a0ac47db72608da68583d632392f04
SHA1: a4e1b522335a644f1b945a70bbfed0aac306acf9
SHA256: f7e224f32d0d72aefd84d3b810248cba6bc94658e6ce4bdd88384dab06644ba3
SSDeep: 6144:vL4KtPW6AaADER78qn1NIbEzPg3tbYGNKZDVIV7qz/ObzkNfYSpqz2aUV:vk0 Il8iHNg3K7ZD2V7CY
Size: 290816 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6
Company: no certificate found
Created at: 2011-10-26 00:44:44
Analyzed on: WindowsXP SP3 32-bit
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):
%original file name%.exe:480
rundll32.exe:132
reg.exe:2024
reg.exe:1064
reg.exe:1548
reg.exe:644
dumprep.exe:1852
dumprep.exe:1092
The Worm injects its code into the following process(es):No processes have been created.
File activity
The process %original file name%.exe:480 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\svchost.exe (35 bytes)
The process dumprep.exe:1852 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\WERde8e.dir00\svchost.exe.hdmp (211564 bytes)
The process dumprep.exe:1092 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\WERde8e.dir00\svchost.exe.mdmp (102001 bytes)
Registry activity
The process %original file name%.exe:480 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F1 65 7D 70 E9 37 E3 04 5F 18 25 29 FE F3 BD 65"
[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:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Windows Live" = "c:\%original file name%.exe"
The process rundll32.exe:132 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "25 DC 51 D4 78 39 3B E7 4E 7A BD 90 83 65 67 A5"
[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\AppCompatFlags\Layers\%Documents and Settings%\%current user%\Local Settings\Temp]
"svchost.exe" = "EnableNXShowUI"
[HKLM\System\CurrentControlSet\Control\Session Manager\AppCompatibility]
"AppCompatCache" = "EF BE AD DE 60 00 00 00 00 00 00 00 00 00 00 00"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\Local Settings\Temp]
"svchost.exe" = "Microsoft® Resource File To COFF Object Conversion Utility"
The process reg.exe:2024 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "0F 8C 3B 99 5C 14 51 18 9B FD BC 6D 27 5A D5 8E"
[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DoNotAllowExceptions" = "0"
The process reg.exe:1064 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "9A 7F 6E 31 C3 2D A2 80 0A CA B9 82 29 D6 3A BB"
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%\Local Settings\Temp]
"svchost.exe" = "%Documents and Settings%\%current user%\Local Settings\Temp\svchost.exe:*:Enabled:Windows Messanger"
The process reg.exe:1548 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 D5 47 D7 37 6B 05 31 A4 65 31 DA 4E A7 DE 98"
[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DoNotAllowExceptions" = "0"
The process reg.exe:644 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "15 50 BC 7A 4D ED 0D E5 A0 90 D4 28 8F 68 79 D3"
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]
"T70ZKG2UDZ.exe" = "%Documents and Settings%\%current user%\Application Data\T70ZKG2UDZ.exe:*:Enabled:Windows Messanger"
The process dumprep.exe:1852 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "5F 47 F6 B6 8C 11 DF D6 E9 36 5F 93 CF AD 77 F8"
The process dumprep.exe:1092 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "35 DE 5B F4 BA 20 80 B3 E0 1F 52 7A CF DC 64 08"
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):
%original file name%.exe:480
rundll32.exe:132
reg.exe:2024
reg.exe:1064
reg.exe:1548
reg.exe:644
dumprep.exe:1852
dumprep.exe:1092 - Delete the original Worm file.
- Delete or disinfect the following files created/modified by the Worm:
%Documents and Settings%\%current user%\Local Settings\Temp\svchost.exe (35 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\WERde8e.dir00\svchost.exe.hdmp (211564 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\WERde8e.dir00\svchost.exe.mdmp (102001 bytes) - Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Windows Live" = "c:\%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.