MD5: c01642f8dc0fcf6eed764ae168908def
SHA1: 5a21c9fd876800792388d86849afc5cf627eebb4
SHA256: 5feb131bee1ed799773cd3e261f16832376e32baca2e6a3dd94e69392fd41f92
SSDeep: 24576:rutr5OUizpj/x6CJNPPaz4IkqKWWISmTg2IHVfurNET5wWJwecJ960yt1m1w1OP:ruX2jxr7Haz4GKAXCH9fFwWJweJ0SUwY
Size: 1518287 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2010-03-15 08:27:50
Analyzed on: WindowsXP SP3 32-bit

Summary:

Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

hwnd.exe:676
hwnd.exe:168
exdil.exe:272
exdil.exe:864

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

%original file name%.exe:388
setup.exe:1668
Explorer.EXE:1684

Mutexes

The following mutexes were created/opened:

{F40026EC-486C-49B6-1F9E-0189FAB78EC1}
_SHuassist.mtx
ZonesLockedCacheCounterMutex
ZonesCacheCounterMutex
ZonesCounterMutex
ShimCacheMutex

File activity

The process %original file name%.exe:388 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\RarSFX0\hwnd.exe (11916 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\RarSFX0\setup.exe (5256 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\RarSFX0\__tmp_rar_sfx_access_check_2425984 (0 bytes)

The process hwnd.exe:676 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\Owufk\exdil.exe (3839 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmp10f57aff.bat (191 bytes)

The process hwnd.exe:168 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\00000000 (14 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\~DF9187.tmp (0 bytes)

The process exdil.exe:864 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\00000000 (14 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\~DF9CA.tmp (0 bytes)

Registry activity

The process %original file name%.exe:388 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "79 89 36 A4 58 AE 0C 78 AF 47 94 14 4B BB C6 4E"

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

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

[HKCU\Software\Microsoft\Wuvoi]
"Olmootin" = "16 80 72 8D 0A A5 00 09 1D E7 F3 F1 CB EC B2 76"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"

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

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

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\RarSFX0]
"hwnd.exe" = "hwnd"

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

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\RarSFX0]
"setup.exe" = "7z SFX"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Desktop" = "%Documents and Settings%\All Users\Desktop"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Personal" = "%Documents and Settings%\%current user%\My Documents"

The Trojan modifies IE settings for security zones to map all urls to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName" = "1"

The Trojan modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:

"UNCAsIntranet" = "1"

The Trojan modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:

"ProxyBypass" = "1"

The process hwnd.exe:676 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "54 6A 74 27 29 6A 3D 6E A1 54 7D 45 59 FB 88 99"

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

The process hwnd.exe:168 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "00 5F 1F 01 F0 D0 2A 42 D5 69 98 6A 3F 19 90 81"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"History" = "%Documents and Settings%\%current user%\Local Settings\History"
"My Pictures" = "%Documents and Settings%\%current user%\My Documents\My Pictures"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
"Personal" = "%Documents and Settings%\%current user%\My Documents"

[HKCU\Software\Enigma Protector\D98C1DD404B2008F-980980E97E42F8EC\D98C1DD404B2008F-980980E97E42F8EC]
"00000000" = "6D FE 42 1F 1E A7 5C 2E 97 E1 77 D6 39 A1"

The process exdil.exe:272 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F0 F6 44 C6 7A 56 14 8E 9A 12 66 ED 48 45 66 B9"

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

The process exdil.exe:864 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "A6 F2 36 2C BE 13 EA 9F D6 30 A8 B3 66 B0 29 83"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"History" = "%Documents and Settings%\%current user%\Local Settings\History"
"My Pictures" = "%Documents and Settings%\%current user%\My Documents\My Pictures"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
"Personal" = "%Documents and Settings%\%current user%\My Documents"

[HKCU\Software\Enigma Protector\D98C1DD404B2008F-980980E97E42F8EC\D98C1DD404B2008F-980980E97E42F8EC]
"00000000" = "6D FE 42 1F 1E A7 5C 2E 97 E1 77 D6 39 A1"

The process setup.exe:1668 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "B0 13 8E B1 86 D0 96 81 43 FA 2E A7 7F 07 0B 10"

[HKCU\Software\Microsoft\Wuvoi]
"Olmootin" = "16 80 72 8D 0A A5 00 09 1D E7 F3 F1 CB EC B2 76"

Dropped PE files

HOSTS file anomalies

No changes have been detected.

Rootkit activity

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

HttpSendRequestExA
HttpSendRequestW
InternetReadFileExA
InternetQueryDataAvailable
HttpSendRequestExW
InternetReadFile
HttpQueryInfoA
HttpSendRequestA
InternetCloseHandle

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

PFXImportCertStore

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

WSASend
send
closesocket

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

GetFileAttributesExW

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

LdrLoadDll
NtCreateThread

Propagation

VersionInfo

No information is available.

PE Sections

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

URLs

No activity has been detected.

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Web Traffic was not found.

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

.text

`.rdata

@.data

@.rsrc

WSSSSh

^SShq

SSSh4&A

SSh<'A

%.*s(%d)%s

rtmp%d

<head><meta http-equiv="content-type" content="text/html; charset=

shlwapi.dll

%s %s

%s %s %s

GETPASSWORD1

%s%s%d

Software\Microsoft\Windows\CurrentVersion

%s.%d.tmp

winrarsfxmappingfile.tmp

-el -s2 "-d%s" "-p%s" "-sp%s"

__tmp_rar_sfx_access_check_%u

sfxcmd

COMCTL32.DLL

riched20.dll

riched32.dll

COMCTL32.dll

GetProcessHeap

GetCPInfo

KERNEL32.dll

USER32.dll

GDI32.dll

COMDLG32.dll

RegCloseKey

RegCreateKeyExA

RegOpenKeyExA

ADVAPI32.dll

SHFileOperationA

ShellExecuteExA

SHELL32.dll

ole32.dll

OLEAUT32.dll

WINRAR.SFX

d:\Projects\WinRAR\SFX\build\sfxrar32\Release\sfxrar.pdb

Extracting %s

c:\%original file name%.exe

version="1.0.0.0"

<requestedExecutionLevel level="asInvoker"

name="Microsoft.Windows.Common-Controls"

version="6.0.0.0"

publicKeyToken="6595b64144ccf1df"

<!--The ID below indicates application support for Windows Vista -->

<supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}"/>

<!--The ID below indicates application support for Windows 7 -->

<supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>

<asmv3:windowsSettings xmlns="hXXp://schemas.microsoft.com/SMI/2005/WindowsSettings">

</asmv3:windowsSettings>

Shell.Explorer

"c:\%original file name%.exe

Enter password

&Enter password for the encrypted file:

Skipping %s

The file "%s" header is corrupt%The archive comment header is corrupt

Unknown method in %s

Cannot open %s

Cannot create %s

Cannot create folder %s6CRC failed in the encrypted file %s (wrong password ?)

CRC failed in %s

Packed data CRC failed in %s

Wrong password for %s5Write error in the file %s. Probably the disk is full

Read error in the file %s

Extracting from %s

ErroraErrors encountered while performing the operation

Please close all applications, reboot Windows and restart this installation\Some installation files are corrupt.

%original file name%.exe_388_rwx_009F0000_00026000:

.text

`.data

.reloc

gdiplus.dll

GdiplusShutdown

ole32.dll

gdi32.dll

hXXp://VVV.google.com/webhp

userenv.dll

del "%s"

if exist "%s" goto d

del /F "%s"

Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; SV1)

HTTP/1.1

urlmon.dll

cabinet.dll

PR_OpenTCPSocket

hXXp://

hXXps://

HTTP/1.

…!&7$?

= -9>/<'

)9()*3-:

0-'40'7!7,

>#):>)9/9

747:29;-

6;9843';22,

xjo5\xt{q{}w .fhhd

F{qbfqawAQv}kwhucp[Ootfpci{.Lp{fZFRDm}R[S

SSSh$

GetProcessHeap

KERNEL32.dll

MsgWaitForMultipleObjects

MapVirtualKeyW

SetKeyboardState

ExitWindowsEx

GetKeyboardState

OpenWindowStationW

GetProcessWindowStation

CreateWindowStationW

CloseWindowStation

SetProcessWindowStation

USER32.dll

RegOpenKeyExW

RegEnumKeyExW

RegCloseKey

RegCreateKeyExW

ADVAPI32.dll

UrlUnescapeA

SHDeleteKeyW

PathIsURLW

SHLWAPI.dll

ShellExecuteW

SHELL32.dll

Secur32.dll

SetViewportOrgEx

GDI32.dll

WS2_32.dll

PFXImportCertStore

CertDeleteCertificateFromStore

CertOpenSystemStoreW

CertCloseStore

CertEnumCertificatesInStore

CertDuplicateCertificateContext

PFXExportCertStoreEx

CRYPT32.dll

HttpQueryInfoA

InternetCrackUrlA

HttpOpenRequestA

HttpSendRequestA

HttpSendRequestExA

HttpSendRequestExW

HttpSendRequestW

HttpAddRequestHeadersA

GetUrlCacheEntryInfoW

HttpAddRequestHeadersW

WININET.dll

OLEAUT32.dll

NETAPI32.dll

050<0\0{0

cGlobal\XXX

kernel32.dll

"%s" %s

/c "%s"

%sx.%s

%sx

nspr4.dll

SysShadow

e.dat

Global\{ED8E20A7-4E27-5038-7189-40A494A0CFEC}

%Documents and Settings%\%current user%\Application Data

{7BF5928C-FC0C-C643-7189-40A494A0CFEC}

setup.exe_1668:

u.fe}qfd}pf

.text

`.rdata

@.data

.rsrc

<x.uW

USER32.dll

OLEAUT32.dll

SHELL32.dll

ole32.dll

MSVCRT.dll

_acmdln

KERNEL32.dll

@shell32.dll

7z.sfx

7z.sfx.exe

Enter password

&Enter password:

&Show password

5Update operations are not supported for this archive.

File is not supported archive.$CRC failed in '{0}'. File is broken.#Data error in '{0}'. File is broken)Unsupported compression method for '{0}'.3CRC failed in encrypted file '{0}'. Wrong password?3Data error in encrypted file '{0}'. Wrong password?'Specify a location for extracted files.

"Can not open file '{0}' as archive5Can not open encrypted archive '{0}'. Wrong password?8The system cannot allocate the required amount of memory

Unsupported archive type

setup.exe_1668_rwx_009D0000_00026000:

.text

`.data

.reloc

gdiplus.dll

GdiplusShutdown

ole32.dll

gdi32.dll

hXXp://VVV.google.com/webhp

userenv.dll

del "%s"

if exist "%s" goto d

del /F "%s"

Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; SV1)

HTTP/1.1

urlmon.dll

cabinet.dll

PR_OpenTCPSocket

hXXp://

hXXps://

HTTP/1.

…!&7$?

= -9>/<'

)9()*3-:

0-'40'7!7,

>#):>)9/9

747:29;-

6;9843';22,

xjo5\xt{q{}w .fhhd

F{qbfqawAQv}kwhucp[Ootfpci{.Lp{fZFRDm}R[S

SSSh$

GetProcessHeap

KERNEL32.dll

MsgWaitForMultipleObjects

MapVirtualKeyW

SetKeyboardState

ExitWindowsEx

GetKeyboardState

OpenWindowStationW

GetProcessWindowStation

CreateWindowStationW

CloseWindowStation

SetProcessWindowStation

USER32.dll

RegOpenKeyExW

RegEnumKeyExW

RegCloseKey

RegCreateKeyExW

ADVAPI32.dll

UrlUnescapeA

SHDeleteKeyW

PathIsURLW

SHLWAPI.dll

ShellExecuteW

SHELL32.dll

Secur32.dll

SetViewportOrgEx

GDI32.dll

WS2_32.dll

PFXImportCertStore

CertDeleteCertificateFromStore

CertOpenSystemStoreW

CertCloseStore

CertEnumCertificatesInStore

CertDuplicateCertificateContext

PFXExportCertStoreEx

CRYPT32.dll

HttpQueryInfoA

InternetCrackUrlA

HttpOpenRequestA

HttpSendRequestA

HttpSendRequestExA

HttpSendRequestExW

HttpSendRequestW

HttpAddRequestHeadersA

GetUrlCacheEntryInfoW

HttpAddRequestHeadersW

WININET.dll

OLEAUT32.dll

NETAPI32.dll

050<0\0{0

cGlobal\XXX

kernel32.dll

"%s" %s

/c "%s"

%sx.%s

%sx

nspr4.dll

SysShadow

e.dat

Global\{ED8E20A7-4E27-5038-7189-40A494A0CFEC}

%Documents and Settings%\%current user%\Application Data

{7BF5928C-FC0C-C643-7189-40A494A0CFEC}

Explorer.EXE_1684_rwx_00ED0000_00026000:

.text

`.data

.reloc

gdiplus.dll

GdiplusShutdown

ole32.dll

gdi32.dll

hXXp://VVV.google.com/webhp

userenv.dll

del "%s"

if exist "%s" goto d

del /F "%s"

Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; SV1)

HTTP/1.1

urlmon.dll

cabinet.dll

PR_OpenTCPSocket

hXXp://

hXXps://

HTTP/1.

…!&7$?

= -9>/<'

)9()*3-:

0-'40'7!7,

>#):>)9/9

747:29;-

6;9843';22,

xjo5\xt{q{}w .fhhd

F{qbfqawAQv}kwhucp[Ootfpci{.Lp{fZFRDm}R[S

SSSh$

GetProcessHeap

KERNEL32.dll

MsgWaitForMultipleObjects

MapVirtualKeyW

SetKeyboardState

ExitWindowsEx

GetKeyboardState

OpenWindowStationW

GetProcessWindowStation

CreateWindowStationW

CloseWindowStation

SetProcessWindowStation

USER32.dll

RegOpenKeyExW

RegEnumKeyExW

RegCloseKey

RegCreateKeyExW

ADVAPI32.dll

UrlUnescapeA

SHDeleteKeyW

PathIsURLW

SHLWAPI.dll

ShellExecuteW

SHELL32.dll

Secur32.dll

SetViewportOrgEx

GDI32.dll

WS2_32.dll

PFXImportCertStore

CertDeleteCertificateFromStore

CertOpenSystemStoreW

CertCloseStore

CertEnumCertificatesInStore

CertDuplicateCertificateContext

PFXExportCertStoreEx

CRYPT32.dll

HttpQueryInfoA

InternetCrackUrlA

HttpOpenRequestA

HttpSendRequestA

HttpSendRequestExA

HttpSendRequestExW

HttpSendRequestW

HttpAddRequestHeadersA

GetUrlCacheEntryInfoW

HttpAddRequestHeadersW

WININET.dll

OLEAUT32.dll

NETAPI32.dll

050<0\0{0

cGlobal\XXX

kernel32.dll

"%s" %s

/c "%s"

%sx.%s

%sx

nspr4.dll

SysShadow

e.dat

%Documents and Settings%\%current user%\Application Data\Erkue\gyhea.ita

%Documents and Settings%\%current user%\Application Data\Erkue

gyhea.ita

Global\{ED8E20A7-4E27-5038-7189-40A494A0CFEC}

%Documents and Settings%\%current user%\Application Data

{7BF5928C-FC0C-C643-7189-40A494A0CFEC}

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):
   

   hwnd.exe:676
   hwnd.exe:168
   exdil.exe:272
   exdil.exe:864
   

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

   %Documents and Settings%\%current user%\Local Settings\Temp\RarSFX0\hwnd.exe (11916 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\RarSFX0\setup.exe (5256 bytes)
   %Documents and Settings%\%current user%\Application Data\Owufk\exdil.exe (3839 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\tmp10f57aff.bat (191 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\00000000 (14 bytes)
   

5. Reboot the computer.
   

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.