Trojan-PSW.Win32.Zbot_4268d869cc

by malwarelabrobot on September 16th, 2013 in Malware Descriptions.

Gen:Variant.Symmi.30189 (BitDefender), HEUR:Trojan.Win32.Generic (Kaspersky), Gen:Variant.Symmi.30189 (B) (Emsisoft), PWSZbot-FEN!4268D869CC97 (McAfee), Gen:Variant.Symmi.30189 (FSecure), SHeur4.BPVL (AVG), Trojan-PSW.Win32.Zbot.6.FD, BackdoorCaphaw_QKKBAL.YR, TrojanPSWZbot.YR, GenericInjector.YR (Lavasoft MAS)
Behaviour: Trojan-PSW, Trojan, Backdoor


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: 4268d869cc97c284f2b33704ab22f5ba
SHA1: 7d796edd4973086d9a8bacf2034ce825d3782f21
SHA256: ef817921be2ab40ab45b15c5db346b9e07f2520a3f70877f135445816371d102
SSDeep: 6144:f85PmmhPtTZzPvYZ/EtoAF7pDr7x8yVSrySL1oTsNUnERTaXO it4sCr:tQ5toAfrmYSrbLCw/aXO it4sS
Size: 333013 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: Armadillov171, MicrosoftVisualC, MicrosoftVisualCv50v60MFC, MicrosoftVisualC50, UPolyXv05_v6
Company: StarApp
Created at: 2013-09-07 11:55:46


Summary:

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

Payload

No specific payload has been found.

Process activity

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

4268d869cc97c284f2b33704ab22f5ba.exe:544
4268d869cc97c284f2b33704ab22f5ba.exe:1376
hoype.exe:740
hoype.exe:564

File activity

The process 4268d869cc97c284f2b33704ab22f5ba.exe:544 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\Ahudz\hoype.exe (1614 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmp853f5ee8.bat (177 bytes)

Registry activity

The process 4268d869cc97c284f2b33704ab22f5ba.exe:544 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" = "C7 0B 47 7C 50 A7 11 0B 3F 0E AD A6 8A 9A 47 1B"

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

The process 4268d869cc97c284f2b33704ab22f5ba.exe:1376 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" = "3D 5F F1 46 1D 36 74 90 AA 5D 23 F6 66 4B EC D1"

The process hoype.exe:740 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" = "C9 D7 F2 BF DD 9B C8 BF 48 ED CD 47 97 FF 97 17"

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

The process hoype.exe:564 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" = "C4 A9 F1 9F 0A 90 B7 AB 1A E7 5A D7 63 C2 DF 5B"

Network activity (URLs)

URL IP
hxxp://www.google.com/webhp 173.194.43.82
hxxp://www.google.ca/webhp?gws_rd=cr&ei=CUs1UuSYGciKrQHtqoH4Dg 173.194.43.88
hxxp://204.93.211.115/log/gate.php


Rootkit activity

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

HttpSendRequestExA
HttpSendRequestW
InternetReadFileExA
InternetQueryDataAvailable
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:

SetCursorPos
DefMDIChildProcA
DefFrameProcA
DefDlgProcA
GetClipboardData
DefMDIChildProcW
DefFrameProcW
GetUpdateRgn
RegisterClassA
GetDCEx
ReleaseCapture
SetCapture
DefWindowProcA
CallWindowProcA
GetUpdateRect
PeekMessageA
CallWindowProcW
GetMessagePos
GetCursorPos
EndPaint
BeginPaint
DefWindowProcW
RegisterClassExA
GetMessageA
DefDlgProcW
SwitchDesktop
OpenInputDesktop
RegisterClassExW
RegisterClassW
GetCapture
PeekMessageW
GetMessageW
GetWindowDC
TranslateMessage
GetDC
ReleaseDC

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

WSASend
send
closesocket

The Trojan-PSW installs the following user-mode hooks in kernel32.dll:

GetFileAttributesExW

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):

    4268d869cc97c284f2b33704ab22f5ba.exe:544
    4268d869cc97c284f2b33704ab22f5ba.exe:1376
    hoype.exe:740
    hoype.exe:564

  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\Ahudz\hoype.exe (1614 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\tmp853f5ee8.bat (177 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.

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