TrojanPSW.Win32.Zbot.4_a3fabe329b

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan-PSW creates the following process(es):

a3fabe329bdae07cbcdb56520375adcb.exe:1116
JQW2892:1848
duujs.exe:512
duujs.exe:1484

File activity

The process a3fabe329bdae07cbcdb56520375adcb.exe:1116 makes changes in a file system.

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

%Documents and Settings%\%current user%\Local Settings\Temp\OYB254.bat (172 bytes)
%Documents and Settings%\%current user%\Application Data\Jery\duujs.exe (1732 bytes)

The process JQW2892:1848 makes changes in a file system.

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

%Documents and Settings%\%current user%\Local Settings\Temp\NNFA53F.bat (169 bytes)
%Documents and Settings%\%current user%\Application Data\Jery\duujs.exe (2777 bytes)

The Trojan-PSW deletes the following file(s):

%Documents and Settings%\%current user%\Application Data\Jery\duujs.exe (0 bytes)

The process duujs.exe:512 makes changes in a file system.

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

%Documents and Settings%\%current user%\NTUSER.DAT.LOG (6576 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT (5940 bytes)

Registry activity

The process a3fabe329bdae07cbcdb56520375adcb.exe:1116 makes changes in a system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "8D 2B A0 BE D4 1D BF 81 CD 0D B2 6A 90 19 B7 33"

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

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

The process JQW2892:1848 makes changes in a system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "ED BB 86 2E 38 24 72 00 FD 20 26 E7 AD 3D 91 66"

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

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

The process duujs.exe:512 makes changes in a system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "07 39 02 50 41 A1 63 28 60 FC 63 57 C4 0C BD D7"

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

[HKCU\Software\Microsoft\Emtiaho]
"1ef64ac2" = " TL0xsMZ kQyqCB5ÇŽ"

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

The process duujs.exe:1484 makes changes in a system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "5F E7 37 0A DD 73 64 37 E2 C1 69 40 3A 49 76 C7"

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

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

Network activity (URLs)

URL	IP
hxxp://www.google.com/	173.194.43.82
hxxp://www.google.ca/?gws_rd=cr&ei=47QqUvOSKYeoyAGCvYDQBA	173.194.43.88

Rootkit activity

The Trojan-PSW installs the following user-mode hooks in WININET.dll:

HttpSendRequestExA
HttpSendRequestW
InternetReadFileExA
InternetWriteFile
InternetWriteFileExA
InternetQueryDataAvailable
HttpQueryInfoW
HttpSendRequestExW
InternetReadFile
HttpQueryInfoA
HttpSendRequestA
InternetCloseHandle

The Trojan-PSW installs the following user-mode hooks in CRYPT32.dll:

PFXImportCertStore

The Trojan-PSW installs the following user-mode hooks in USER32.dll:

GetClipboardData
TranslateMessage

The Trojan-PSW installs the following user-mode hooks in Secur32.dll:

DecryptMessage
SealMessage
DeleteSecurityContext

The Trojan-PSW installs the following user-mode hooks in WS2_32.dll:

WSAGetOverlappedResult
WSASend
recv
gethostbyname
WSARecv
send
closesocket
freeaddrinfo
getaddrinfo
GetAddrInfoW

The Trojan-PSW installs the following user-mode hooks in ntdll.dll:

LdrLoadDll
NtCreateThread

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. Scan a system with an anti-rootkit tool.
   
2. Terminate malicious process(es) (How to End a Process With the Task Manager):

   a3fabe329bdae07cbcdb56520375adcb.exe:1116
   JQW2892:1848
   duujs.exe:512
   duujs.exe:1484

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

   %Documents and Settings%\%current user%\Local Settings\Temp\OYB254.bat (172 bytes)
   %Documents and Settings%\%current user%\Application Data\Jery\duujs.exe (1732 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\NNFA53F.bat (169 bytes)
   %Documents and Settings%\%current user%\NTUSER.DAT.LOG (6576 bytes)
   

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