TROJANPSW.WIN32.ZBOT_52d3b26a03

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Backdoor creates the following process(es):

iqga.exe:2388
iqga.exe:1764
%original file name%.exe:860
%original file name%.exe:3180

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

ctfmon.exe:1240

File activity

The process %original file name%.exe:3180 makes changes in the file system.

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

%Documents and Settings%\%current user%\Local Settings\Temp\tmp3191bac0.bat (177 bytes)
%Documents and Settings%\%current user%\Application Data\Itqeok\iqga.exe (2293904 bytes)

Registry activity

The process iqga.exe:2388 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "1A E2 0E 32 D3 D3 6D B0 D9 C5 F5 D2 A5 85 01 AF"

The process iqga.exe:1764 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "24 39 8E D6 4C 18 14 D7 26 08 FC D5 24 37 9C 74"

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

The process %original file name%.exe:860 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "E3 CB 36 72 89 92 98 84 F1 1D A0 08 6F F1 3E 2D"

The process %original file name%.exe:3180 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "57 9E 8C AD 0E 31 01 30 B6 15 F2 23 22 93 F7 76"

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

The process ctfmon.exe:1240 makes changes in the system registry.

The Backdoor deletes the following value(s) in system registry:

The Backdoor disables automatic startup of the application by deleting the following autorun value:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"internat.exe"

Network activity (URLs)

URL	IP
checkip.dyndns.org

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

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):

   iqga.exe:2388
   iqga.exe:1764
   %original file name%.exe:860
   %original file name%.exe:3180
   

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

   %Documents and Settings%\%current user%\Local Settings\Temp\tmp3191bac0.bat (177 bytes)
   %Documents and Settings%\%current user%\Application Data\Itqeok\iqga.exe (2293904 bytes)

4. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
   
5. 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