Trojan.Win32.Generic!BT (VIPRE), Worm.Win32.Ainslot.VB.FD, GenericAutorunWorm.YR, WormAinslot_VariantOfZeus.YR (Lavasoft MAS)Behaviour: Trojan, Worm, WormAutorun
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
Summary
MD5: 5b7007b78b2c499d3db0d5c6bce0b5f2
SHA1: 63e9abfbc85dc8ee2065af485e9d8f1d73c3b1ea
SHA256: bee389a13af42aca792a99e0a4c7f5c756f86a74f8b6878b43e1bc02dd079bdb
SSDeep: 12288:w0XWo87VAU1RIuBCwLOklFPaUYY5pbQQJTtVJ D68w:wUs6 RIzwKklFiQHc
Size: 457728 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2014-02-10 18:49:21
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):
reg.exe:1560
reg.exe:524
reg.exe:1500
reg.exe:1720
The Worm injects its code into the following process(es):
%original file name%.exe:820
vbc.exe:556
File activity
The process %original file name%.exe:820 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\Win Update\Win Update.exe (2321 bytes)
The process vbc.exe:556 makes changes in the file system.
The Worm creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Application Data\sambuk (33 bytes)
Registry activity
The process %original file name%.exe:820 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C7 A7 B6 22 6D DF 8F 59 3A 15 8A 9E 05 93 20 A4"
[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]
"Win Update" = "%Documents and Settings%\%current user%\Local Settings\Temp\Win Update\Win Update.exe"
The process vbc.exe:556 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "0A 3F 53 40 16 89 2D 93 F2 7F 70 B5 5B 5B 7A E5"
[HKCU\Software\VB and VBA Program Settings\SrvID\ID]
"VFQ6GPGRFF" = "Alloys"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKCU\Software\VB and VBA Program Settings\INSTALL\DATE]
"VFQ6GPGRFF" = "February 25, 2014"
The process reg.exe:1560 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "BD 4A F9 2E BE F0 73 79 B0 69 F2 66 D0 22 01 69"
[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DoNotAllowExceptions" = "0"
The process reg.exe:524 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F5 DF 24 FD 1B 43 CE FD E3 8A D8 A8 97 9A 26 C6"
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]
"vbc.exe" = "%WinDir%\Microsoft.NET\Framework\v2.0.50727\vbc.exe:*:Enabled:Windows Messanger"
The process reg.exe:1500 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "1D 44 6C D9 59 C4 89 49 3B 22 B7 BC A3 B3 5F F1"
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]
"SCY3YS9T9J.exe" = "%Documents and Settings%\%current user%\Application Data\SCY3YS9T9J.exe:*:Enabled:Windows Messanger"
The process reg.exe:1720 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "08 5D C1 FD 4C 55 88 98 BE 06 5C C7 BB 2D A2 66"
[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DoNotAllowExceptions" = "0"
Network activity (URLs)
URL | IP |
---|---|
hxxp://api.ipinfodb.com/v2/ip_query_country.php?key=33134207068e7a95c2b45275a388806be6b9ca837fe782832723b99fb21a7a8c&timezone=off | 192.187.109.60 |
sambuckers.zapto.org | 213.120.39.131 |
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):
reg.exe:1560
reg.exe:524
reg.exe:1500
reg.exe:1720 - Delete the original Worm file.
- Delete or disinfect the following files created/modified by the Worm:
%Documents and Settings%\%current user%\Local Settings\Temp\Win Update\Win Update.exe (2321 bytes)
%Documents and Settings%\%current user%\Application Data\sambuk (33 bytes) - Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Win Update" = "%Documents and Settings%\%current user%\Local Settings\Temp\Win Update\Win Update.exe" - Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
- Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
- Reboot the computer.