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TrojanPSW.Win32.Zbot_8412e2b408


Trojan.Win32.Buzus.opks (Kaspersky), Trojan.Generic.11350099 (AdAware), Trojan-PSW.Win32.Zbot.6.FD, GenericInjector.YR, BackdoorCaphaw_QKKBAL.YR, TrojanPSWZbot.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

MD5: 8412e2b408b7384081764a3b6a448768

SHA1: 7a0a4aed8f47ac636bf423121da4330545a3a0f0

SHA256: 3fa8c2dc735fd8ab6319150c00b58a9e1ce5ca49ddd0b961816e5f485728d4a0

SSDeep: 24576:ORmJkcoQricOIQxiZY1ia1LhwXG96TyWByRbcuGz:bJZoQrbTFZY1ialmXi6OEyeLz

Size: 1158657 bytes

File type: EXE

Platform: WIN32

Entropy: Packed

PEID: UPolyXv05_v6

Company: no certificate found

Created at: 2012-01-29 23:32:28

Analyzed on: WindowsXP SP3 32-bit

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

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

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

yxov.exe:1516
yxov.exe:696
%original file name%.exe:1192
%original file name%.exe:1512

The Trojan-PSW injects its code into the following process(es):

Explorer.EXE:128

File activity

The process %original file name%.exe:1192 makes changes in the file system.


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

%Documents and Settings%\%current user%\Application Data\Maip\yxov.exe (7386 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmp2d20acc8.bat (177 bytes)

Registry activity

The process yxov.exe:1516 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "B3 58 E6 BB 6C 32 8B BB E8 59 F8 9A B5 34 F3 83"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

The process yxov.exe:696 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "DC 5A D2 8B 3A BE 44 2F 06 6B 08 69 14 D2 A3 DA"

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

The process %original file name%.exe:1192 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "7C 0C B8 88 99 A3 E5 B7 F3 FA CB ED 51 CD 9D EF"

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

The process %original file name%.exe:1512 makes changes in the system registry.


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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "BC C2 F5 D0 A8 3B E8 7D 87 03 3D 3D 20 0B 10 3C"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

Dropped PE files

MD5 File path
4030347db269b344a41a9db3b7ad52c6c:\Documents and Settings\"%CurrentUserName%"\Application Data\Maip\yxov.exe

HOSTS file anomalies

No changes have been detected.

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

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):

    yxov.exe:1516
    yxov.exe:696
    %original file name%.exe:1192
    %original file name%.exe:1512

  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\Maip\yxov.exe (7386 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\tmp2d20acc8.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.

Static Analysis

VersionInfo

Company Name:
Product Name:
Product Version:
Legal Copyright:
Legal Trademarks:
Original Filename:
Internal Name:
File Version: 3, 3, 8, 1
File Description:
Comments:
Language: English (United States)

Company Name: Product Name: Product Version: Legal Copyright: Legal Trademarks: Original Filename: Internal Name: File Version: 3, 3, 8, 1File Description: Comments: Language: English (United States)

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
.text40965258525263364.6334761ffce4768976fa0dd2a8f6a97b1417a
.rdata53248057280573443.326930354bc5f2376b5e9a4a3ba38b682dff1
.data589824108376266241.490328033f5a38941b4685bc2299e78f31221
.rsrc7004161841681843202.8393783ab57222cdb6365b67c16e0267f0983

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:


Total found: 2
059faf10ab3897e56dfb81692c7d4ef0
df8d6550aecc4da85e1df2e581f63d9b

Network Activity

URLs

URL IP
hxxp://candlerparkchiropractic.com/wp-includes/pomo/adminpanel/modules/config.bin
hxxp://candlerparkchiropractic.com/wp-includes/pomo/adminpanel/modules/mod1.bin
hxxp://candlerparkchiropractic.com/wp-includes/pomo/adminpanel/modules/mod2.bin
hxxp://candlerparkchiropractic.com/wp-includes/pomo/adminpanel/modules/mod3.bin
hxxp://www.google.com/webhp
hxxp://www.google.ca/webhp?gfe_rd=cr&ei=0aCZU46GD63b8geJzYDQAg

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

The Trojan-PSW connects to the servers at the folowing location(s):

Strings from Dumps

Explorer.EXE_128_rwx_00E70000_0002C000:

.text

.text

`.data

`.data

.reloc

.reloc

gdiplus.dll

gdiplus.dll

GdiplusShutdown

GdiplusShutdown

ole32.dll

ole32.dll

gdi32.dll

gdi32.dll

HTTP/1.1

HTTP/1.1

http://candlerparkchiropractic.com/wp-includes/pomo/adminpanel/modules/config.bin

http://candlerparkchiropractic.com/wp-includes/pomo/adminpanel/modules/config.bin

Mozilla/5.0 (compatible; MSIE 6.0; Windows NT 6.2)

Mozilla/5.0 (compatible; MSIE 6.0; Windows NT 6.2)

pufjwdx.jvh

pufjwdx.jvh

" !=%(>";;

" !=%(>";;

=225;6%%7!=

=225;6%%7!=

3:6 1*7=$;-

3:6 1*7=$;-

*4*-0*1?7!

*4*-0*1?7!

MK[(bocmdgs

MK[(bocmdgs

15#77??68.

15#77??68.

&'/( <99

&'/( <99

$!*4,#)<:

$!*4,#)<:

mfh{g~amzgs.dgg

mfh{g~amzgs.dgg

:; 1299;2

:; 1299;2

>.Rdd

>.Rdd

<-?><pre>userenv.dll</pre><pre>del "%s"</pre><pre>if exist "%s" goto d</pre><pre>del /F "%s"</pre><pre>urlmon.dll</pre><pre>cabinet.dll</pre><pre>http://</pre><pre>https://</pre><pre>HTTP/1.</pre><pre>http://www.google.com/webhp</pre><pre>t7SSSh</pre><pre>t"SSSh</pre><pre>GetProcessHeap</pre><pre>KERNEL32.dll</pre><pre>MapVirtualKeyW</pre><pre>ExitWindowsEx</pre><pre>OpenWindowStationW</pre><pre>GetProcessWindowStation</pre><pre>CreateWindowStationW</pre><pre>CloseWindowStation</pre><pre>SetProcessWindowStation</pre><pre>SetKeyboardState</pre><pre>GetKeyboardState</pre><pre>MsgWaitForMultipleObjects</pre><pre>USER32.dll</pre><pre>RegOpenKeyExW</pre><pre>RegEnumKeyExW</pre><pre>RegCloseKey</pre><pre>RegCreateKeyExW</pre><pre>ADVAPI32.dll</pre><pre>UrlUnescapeA</pre><pre>SHDeleteKeyW</pre><pre>PathIsURLW</pre><pre>SHLWAPI.dll</pre><pre>ShellExecuteW</pre><pre>SHELL32.dll</pre><pre>Secur32.dll</pre><pre>SetViewportOrgEx</pre><pre>GDI32.dll</pre><pre>WS2_32.dll</pre><pre>CertDeleteCertificateFromStore</pre><pre>CertOpenSystemStoreW</pre><pre>CertCloseStore</pre><pre>PFXImportCertStore</pre><pre>CertEnumCertificatesInStore</pre><pre>CertDuplicateCertificateContext</pre><pre>PFXExportCertStoreEx</pre><pre>CRYPT32.dll</pre><pre>HttpQueryInfoA</pre><pre>InternetCrackUrlA</pre><pre>HttpOpenRequestA</pre><pre>HttpAddRequestHeadersA</pre><pre>HttpSendRequestA</pre><pre>HttpSendRequestExA</pre><pre>HttpSendRequestExW</pre><pre>HttpSendRequestW</pre><pre>GetUrlCacheEntryInfoW</pre><pre>HttpAddRequestHeadersW</pre><pre>WININET.dll</pre><pre>OLEAUT32.dll</pre><pre>NETAPI32.dll</pre><pre>x@@zZ.da</pre><pre>=?>#?.?;?</pre><pre>9%9)9/939</pre><pre>SysShadow</pre><pre>kernel32.dll</pre><pre>"%s" %s</pre><pre>/c "%s"</pre><pre>%sx.%s</pre><pre>%sx</pre><pre>cGlobal\XXX</pre><pre>Global\{BDC01C55-EFE9-C66E-EE07-19ED5888CC8C}</pre><pre>%Documents and Settings%\%current user%\Application Data</pre><pre>{7ACF9740-1CFB-C6A3-60B2-76A948962DAE}</pre><pre>%Documents and Settings%\%current user%\Application Data\Ispon\idhui.hod</pre><pre>%Documents and Settings%\%current user%\Application Data\Ispon</pre><pre>idhui.hod</pre></-?>