Trojan-PSW.Win32.Zbot.4_9be02d4c08

by malwarelabrobot on July 12th, 2013 in Malware Descriptions.

Trojan.Win32.Inject.fwmm (Kaspersky), Trojan.Win32.Kryptik.ake (v) (VIPRE), Trojan-PWS.Win32.Zbot!IK (Emsisoft), Trojan-PSW.Win32.Zbot.4.FD, GenericInjector.YR (Lavasoft MAS)
Behaviour: Trojan-PSW, Trojan


The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

Summary
Technical Details
Removal Recommendations

MD5: 9be02d4c08ee246cb3937e33acfbafe1
SHA1: e448bb7a89a5aa129b30e953b0813dad2b7be14f
SHA256: 6a5041b827665654614e8265a4e8c7a76f9052ce48abc43c650246a825bf07ec
SSDeep: 6144:MDPnPsHhCVaD1TwFPdSJ NLZPomGQ1FFqArmPhi7/1Dlgxi8:ePnPZ0elSJ NlP1GcF16Pg7Bai8
Size: 312320 bytes
File type: PE32
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2003-11-14 01:15:40


Summary:

Trojan-PSW. Trojan program intended for stealing users passwords.

Process activity

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

9be02d4c08ee246cb3937e33acfbafe1.exe:880
zasuig.exe:520

File activity

The process 9be02d4c08ee246cb3937e33acfbafe1.exe:880 makes changes in a file system.
The Trojan-PSW creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\Uvmium\zasuig.exe (1737 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\MID3588.bat (173 bytes)

The process zasuig.exe:520 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 (7160 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT (5180 bytes)

Registry activity

The process 9be02d4c08ee246cb3937e33acfbafe1.exe:880 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" = "30 CE B9 EA 72 C1 72 A2 C0 42 AC 89 E6 71 54 16"

[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 zasuig.exe:520 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" = "35 BE 1A 6C CD F7 2A 9A AF 38 95 18 21 2B AC 3C"

[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"

[HKCU\Software\Microsoft\Ifqiudlugii]
"gc232hj" = "m/lhWQAMyQDepA=="

Network activity (URLs)

URL: hxxp://www.google.ca/ IP: 74.125.226.216 Country: United States
URL: www.google.com IP: 74.125.226.211

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


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):

    9be02d4c08ee246cb3937e33acfbafe1.exe:880
    zasuig.exe:520

  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%\Application Data\Uvmium\zasuig.exe (1737 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\MID3588.bat (173 bytes)
    %Documents and Settings%\%current user%\NTUSER.DAT.LOG (7160 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.