Sinowal_1be3fad2ee

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 Trojan's file once a user opens a drive's folder in Windows Explorer.
IRCBot	A bot can communicate with command and control servers via IRC channel.
MSNWorm	A worm can spread its copies through the MSN Messanger.
DNSBlocker	A program can block designated DNS servers for making it difficult for users to locate specific domains or web sites on the Internet.
UDPFlooder	This program can make a UDP flood. A UDP flood attack is a denial-of-service attack using the User Datagram Protocol (UDP). It can be initiated by sending a large number of UDP packets to random ports on a remote host.
SYNFlooder	This program can make a SYN flood. It is a form of denial-of-service attack in which an attacker sends a succession of SYN requests to a target's system in an attempt to consume enough server resources to make the system unresponsive to legitimate traffic.
Trojan-Proxy	This program can launch a proxy server (SOCKS4) on a designated TCP port.
USBInfector	A program can register a device notification with the help of RegisterDeviceNotification. So it is notified when a USB device is plugged and then the worm copies itself to the USB device plugged into the affected computer.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:1788

The Trojan injects its code into the following process(es):No processes have been created.

File activity

The process %original file name%.exe:1788 makes changes in the file system.

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

%Documents and Settings%\%current user%\My Documents\My Videos\Desktop.ini (312 bytes)

The Trojan deletes the following file(s):

%Program Files%\Common Files\CreativeAudio\desktop.ini (0 bytes)

Registry activity

The process %original file name%.exe:1788 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "20 F6 E4 68 D8 6A 3E B3 94 84 D2 A8 B0 B9 AC B7"

[HKCU\Software\Win7zip]
"Uuid" = "A9 48 BB B7 33 53 6A 47 A0 76 52 9D 78 97 8B 9C"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Startup" = "%Documents and Settings%\%current user%\Start Menu\Programs\Startup"
"My Video" = "%Documents and Settings%\%current user%\My Documents\My Videos"
"My Pictures" = "%Documents and Settings%\%current user%\My Documents\My Pictures"
"My Music" = "%Documents and Settings%\%current user%\My Documents\My Music"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"

[HKCU\Software\Classes\CLSID\{A948BBB7-3353-6A47-A076-529D78978B9C}\0E7302EC\CG1]
"BID" = "20 00 08 00 17 00 03 00 DE 07 00 00 14 00 88 FF"

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

[HKCU\Software\Classes\CLSID\{A948BBB7-3353-6A47-A076-529D78978B9C}\0E7302EC\CG1]
"HAL" = "05 EE 00 00"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\ftwrrgoyt.exe]
"DisableExceptionChainValidation" = ""

Network activity (URLs)

URL	IP
hxxp://b.thegamejuststarted14k9.com/direct/mail/order.php	178.19.99.60
windowsupdate.microsoft.com	207.46.201.122
b.worldwipemek6.com	Unresolvable
b.stop2teasemek3.com	Unresolvable
b.dietmydartk5.com	Unresolvable
b.uandmearevideos1k1.com	Unresolvable
b.thegamejuststarted13k8.com	Unresolvable
b.thegamejuststarted11k7.com	Unresolvable
b.uandmearevideos2k2.com	Unresolvable
b.pixartzonek4.com	Unresolvable

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 Trojan's file once a user opens a drive's folder in Windows Explorer.A program can register a device notification with the help of RegisterDeviceNotification. So it is notified when a USB device is plugged and then the worm copies itself to the USB device plugged into the affected computer.A worm can spread its copies through the MSN Messanger.

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):

   %original file name%.exe:1788
   

2. Delete the original Trojan file.
   
3. Delete or disinfect the following files created/modified by the Trojan:

   %Documents and Settings%\%current user%\My Documents\My Videos\Desktop.ini (312 bytes)

4. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
   
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