MD5: a0a4cd62bf0ff4556a5f9830cfd0553d
SHA1: 49d0d0459af4fedebdfa1aba19864e63392596b8
SHA256: 7331ba67c11daa5f86f1f0910e8979e5a8914357372236d9da557f653ea37292
SSDeep: 24576:hfmMv6Ckr7MnyI8fgVrTdjDOPOZTrkMI6z/:h3v 7/I8fQrTR
Size: 1261142 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: ??????????
Created at: 2010-03-07 18:08:39
Analyzed on: WindowsXP SP3 32-bit

Summary:

Backdoor. Malware that enables a remote control of victim's machine.

Payload

Process activity

The Backdoor creates the following process(es):

5ze4r5y5ry1DLL.exe:1168
%original file name%.exe:1552

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

svchost.exe:592
Explorer.EXE:1684

Mutexes

The following mutexes were created/opened:
No objects were found.

File activity

The process 5ze4r5y5ry1DLL.exe:1168 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\Microsoft\svchost.exe (1425 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\jmd1.tmp (11010 bytes)

The process %original file name%.exe:1552 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):

%WinDir%\Explorer32DLL.exe (23913 bytes)
%WinDir%\5ze4r5y5ry1DLL.exe (307 bytes)

The Backdoor deletes the following file(s):

%WinDir%\Explorer32DLL.exe (0 bytes)

Registry activity

The process 5ze4r5y5ry1DLL.exe:1168 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "71 75 97 34 2D 63 7A B0 B3 0F 1E 1F 97 0A B7 FB"

[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"
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

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

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

[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"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\Application Data\Microsoft]
"svchost.exe" = "svchost"

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

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

To automatically run itself each time Windows is booted, the Backdoor adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"svchost.exe" = "%Documents and Settings%\%current user%\Application Data\Microsoft\svchost.exe"

The Backdoor 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:

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

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

"ProxyBypass" = "1"

The process %original file name%.exe:1552 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "26 9A 26 C6 76 A0 EA 9D 37 B7 93 7A C3 7C BF CA"

[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"

[HKCU\Software\Classes\VirtualStore\MACHINE\SOFTWARE\Microsoft\Active Setup\Installed Components\{{DML7J752-5356-4Z46-B4TB-NY2A1F738Y0I}}]
"StubPath" = "%WinDir%\Explorer32DLL.exe"

To automatically run itself each time Windows is booted, the Backdoor adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Explorer" = "%WinDir%\Explorer32DLL.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"Explorer" = "%WinDir%\Explorer32DLL.exe"

Dropped PE files

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

A worm can spread via removable drives. It writes its executable and creates "autorun.inf" scripts on all removable drives. The autorun script will execute the Backdoor's file once a user opens a drive's folder in Windows Explorer.

VersionInfo

Company Name:
Product Name:
Product Version:
Legal Copyright:
Legal Trademarks:
Original Filename:
Internal Name:
File Version: 3, 3, 6, 0
File Description:
Comments:
Language: English (United States)

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 Backdoor connects to the servers at the folowing location(s):

.idata

.rdata

P.reloc

P.rsrc

P.tqn

kernel32.dll

$*@@@*$@@@$ *@@* $@@($*)@-$*@@$-*@@$*-@@(*$)@-*$@@*-$@@*$-@@-* $@-$ *@* $-@$ *-@$ -*@*- $@($ *)(* $)

oleaut32.dll

EVariantBadIndexError

SQL error or missing database

An internal logic error in SQLite

Operation terminated by sqlite3_interrupt()

Uses OS features not supported on host

2nd parameter to sqlite3_bind out of range

sqlite3_step() has another row ready

sqlite3_step() has finished executing

Unknown SQLite Error Code "

ESQLiteException

TSQLiteDatabase

TSQLiteTable

sqlite3_open

sqlite3_errmsg

sqlite3_free

sqlite3_close

sqlite3_last_insert_rowid

sqlite3_total_changes

sqlite3_errcode

sqlite3_bind_text

sqlite3_bind_int

sqlite3_bind_int64

sqlite3_bind_double

sqlite3_bind_null

sqlite3_bind_blob

sqlite3_prepare_v2

sqlite3_step

sqlite3_reset

sqlite3_finalize

sqlite3_prepare

sqlite3_busy_timeout

sqlite3_libversion

sqlite3_create_collation

sqlite3_bind_parameter_index

sqlite3_changes

sqlite3_column_count

sqlite3_column_name

sqlite3_column_decltype

sqlite3_column_type

sqlite3_column_int64

sqlite3_column_double

sqlite3_column_bytes

sqlite3_column_blob

sqlite3_column_text

Failed to open database "%s" : %s

Failed to open database "%s" : unknown error

Error [%d]: %s.

"%s": %s

Error executing SQL

Could not prepare SQL statement

Error executing SQL statement

SQLite is Busy

udprec

SOFTWARE\Microsoft\Windows\CurrentVersion\Run\

:\autorun.inf

icon=%SystemRoot%\system32\SHELL32.dll,4

\Mozilla Firefox\

nss3.dll

mozcrt19.dll

sqlite3.dll

nspr4.dll

plc4.dll

plds4.dll

nssutil3.dll

softokn3.dll

PK11_GetInternalKeySlot

userenv.dll

\Mozilla\Firefox\

profiles.ini

\signons3.txt

\Mozilla\Firefox\profiles.ini

signons.sqlite

SELECT * FROM moz_logins

encryptedPassword

Urlmon.dll

Shell32.dll

URLDownloadToFileA

ShellExecuteA

Future Windows version (unknown)

Windows

UDPPROG1|

UDPStart|

SOFTWARE\Mozilla\Mozilla Firefox\

WEBDL

SOFTWARE\Microsoft\Windows\CurrentVersion\Run

svchost.exe

user32.dll

GetKeyboardType

advapi32.dll

RegOpenKeyExA

RegCloseKey

RegFlushKey

RegCreateKeyExA

GetCPInfo

MsgWaitForMultipleObjects

wsock32.dll

shell32.dll

5 5$5(5,5054585

>">*>2>:>

: :$:(:,:0:4:8:<:@:`:

SQLite3

KWindows

UrlMon

SQLiteTable3

Kernel32.dll

ADVAPI32.dll

Software\Microsoft\Windows\CurrentVersion\Explorer

Cannot open file "%s". %s

Invalid data type for '%s' List capacity out of bounds (%d)

List count out of bounds (%d)

List index out of bounds (%d) Out of memory while expanding memory stream

Failed to get data for '%s'

Failed to set data for '%s'

%s.Seek not implemented$Operation not allowed on sorted list

Thread creation error: %s

Thread Error: %s (%d)

Cannot assign a %s to a %sECheckSynchronize called from thread $%x, which is NOT the main thread%String list does not allow duplicates

Cannot create file "%s". %s

%s (%s, line %d)

Abstract Error?Access violation at address %p in module '%s'. %s of address %p

System Error. Code: %d.

Invalid variant operation%Invalid variant operation (%s%.8x)

%s5Could not convert variant of type (%s) into type (%s)=Overflow while converting variant of type (%s) into type (%s)

Operation not supported

External exception %x

Interface not supported

Invalid pointer operation

Invalid class typecast0Access violation at address %p. %s of address %p

Privileged instruction(Exception %s in module %s at %p.

Application Error1Format '%s' invalid or incompatible with argument

No argument for format '%s'"Variant method calls not supported

!'%s' is not a valid integer value('%s' is not a valid floating point value

I/O error %d

Integer overflow Invalid floating point operation

svchost.exe_592_rwx_00427000_00001000:

Kernel32.dll

ADVAPI32.dll

RegOpenKeyExA

RegCloseKey

Software\Microsoft\Windows\CurrentVersion\Explorer

svchost.exe_592_rwx_008B1000_00071000:

UDPSockError

NMUDP

Errmsg

Port

TNMUDP

RemotePort

LocalPort

ReportLevelLk

0.0.0.0

%d.%d.%d.%d

AutoHotkeys

:].tJ

EInvalidGraphicOperation,0

EInvalidGraphicOperation

KeyPreview,

WindowState

OnKeyDown

OnKeyPressdz

OnKeyUp

ssHotTrack

TWindowState

poProportional

TWMKey

System\CurrentControlSet\Control\Keyboard Layouts\%.8x

vcltest3.dll

TDragOperation

TKeyEvent

TKeyPressEvent

crSQLWait

%s (%s)

IMM32.DLL

EInvalidOperation

%s[%d]

%s_%d

USER32.DLL

comctl32.dll

MSWHEEL_ROLLMSG

MSH_WHEELSUPPORT_MSG

MSH_SCROLL_LINES_MSG

kernel32.dll

Portions Copyright (c) 1983,99 Borland

explorer.exe

Software\Microsoft\Windows\CurrentVersion\Explorer

*.TMP

Kernel32.dll

ADVAPI32.dll

RegOpenKeyExA

RegCloseKey

readbook.exe

rundll32.exe

*.exe

*.scr

UdpT

UdpOnDataReceived

xxtype.cpp

derv->tpClass.tpcFlags & CF_HAS_BASES

Inappropriate I/O control operation

Broken pipe

Operation not permitted

%H:%M:%S

%m/%d/%y

%A, %B %d, %Y

d/d/d d:d:d.d

An exception (X) occurred during DllEntryPoint or DllMain in module:

xx.cpp

varType->tpClass.tpcFlags & CF_HAS_DTOR

varType->tpClass.tpcDtorAddr

(errPtr->ERRcInitDtc >= varType->tpClass.tpcDtorCount) || flags

memType->tpClass.tpcFlags & CF_HAS_DTOR

varType->tpArr.tpaElemType->tpClass.tpcFlags & CF_HAS_DTOR

dttPtr->dttType->tpPtr.tppBaseType->tpClass.tpcFlags & CF_HAS_DTOR

IS_CLASS(dttPtr->dttType->tpMask) && (dttPtr->dttType->tpClass.tpcFlags & CF_HAS_DTOR)

elemType->tpClass.tpcFlags & CF_HAS_DTOR

ReportLevel

GetCPInfo

GetProcessHeap

GetWindowsDirectoryA

RegCreateKeyExA

RegFlushKey

SetViewportOrgEx

ActivateKeyboardLayout

EnumThreadWindows

EnumWindows

GetKeyNameTextA

GetKeyState

GetKeyboardLayout

GetKeyboardLayoutList

GetKeyboardState

GetKeyboardType

LoadKeyboardLayoutA

MapVirtualKeyA

MsgWaitForMultipleObjects

SetWindowsHookExA

UnhookWindowsHookEx

VprK|%Ud

€00404

8 @ @ @ @ @

.text

`.data

.idata

@.edata

@.rsrc

@.reloc

70"!(&&$

External exception %x

Interface not supported

%s (%s, line %d)

Abstract Error?Access violation at address %p in module '%s'. %s of address %p

Win32 Error. Code: %d.

Invalid pointer operation

Invalid class typecast0Access violation at address %p. %s of address %p

Operation aborted%Exception %s in module %s at %p.

Application Error1Format '%s' invalid or incompatible with argument

No argument for format '%s'

Invalid variant operation"Variant method calls not supported

I/O error %d

Integer overflow Invalid floating point operation

Invalid data type for '%s'

Failed to set data for '%s'

Failed to get data for '%s'/Menu '%s' is already being used by another form*Windows socket error: %s (%d), on API '%s'

Asynchronous socket error %d

- Dock zone has no control%List does not allow duplicates ($0%x)!'%s' is not a valid integer value

Alt  Clipboard does not support Icons

!Control '%s' has no parent window

Error reading %s%s%s: %s

Ancestor for '%s' not found

Unsupported clipboard format

Class %s not found

Resource %s not found

List index out of bounds (%d) List capacity out of bounds (%d)

List count out of bounds (%d) Operation not allowed on sorted string list%String list does not allow duplicates#A component named %s already exists$''%s'' is not a valid component name

A class named %s already exists

Cannot assign a %s to a %s

Cannot create file %s

Cannot open file %s

Explorer.EXE_1684_rwx_022A1000_00071000:

UDPSockError

NMUDP

Errmsg

Port

TNMUDP

RemotePort

LocalPort

ReportLevelLk*

0.0.0.0

%d.%d.%d.%d

AutoHotkeys

:].tJ

EInvalidGraphicOperation,0 

EInvalidGraphicOperation

KeyPreview,

WindowState

OnKeyDown

OnKeyPressdz,

OnKeyUp

ssHotTrack

TWindowState

poProportional

TWMKey

System\CurrentControlSet\Control\Keyboard Layouts\%.8x

vcltest3.dll

TDragOperation

TKeyEvent

TKeyPressEvent

crSQLWait

%s (%s)

IMM32.DLL

EInvalidOperation

%s[%d]

%s_%d

USER32.DLL

comctl32.dll

MSWHEEL_ROLLMSG

MSH_WHEELSUPPORT_MSG

MSH_SCROLL_LINES_MSG

kernel32.dll

Portions Copyright (c) 1983,99 Borland

explorer.exe

Software\Microsoft\Windows\CurrentVersion\Explorer

*.TMP

Kernel32.dll

ADVAPI32.dll

RegOpenKeyExA

RegCloseKey

readbook.exe

rundll32.exe

*.exe

*.scr

UdpT

UdpOnDataReceived

xxtype.cpp

derv->tpClass.tpcFlags & CF_HAS_BASES

Inappropriate I/O control operation

Broken pipe

Operation not permitted

%H:%M:%S

%m/%d/%y

%A, %B %d, %Y

d/d/d d:d:d.d

An exception (X) occurred during DllEntryPoint or DllMain in module:

xx.cpp

varType->tpClass.tpcFlags & CF_HAS_DTOR

varType->tpClass.tpcDtorAddr

(errPtr->ERRcInitDtc >= varType->tpClass.tpcDtorCount) || flags

memType->tpClass.tpcFlags & CF_HAS_DTOR

varType->tpArr.tpaElemType->tpClass.tpcFlags & CF_HAS_DTOR

dttPtr->dttType->tpPtr.tppBaseType->tpClass.tpcFlags & CF_HAS_DTOR

IS_CLASS(dttPtr->dttType->tpMask) && (dttPtr->dttType->tpClass.tpcFlags & CF_HAS_DTOR)

elemType->tpClass.tpcFlags & CF_HAS_DTOR

ReportLevel

GetCPInfo

GetProcessHeap

GetWindowsDirectoryA

RegCreateKeyExA

RegFlushKey

SetViewportOrgEx

ActivateKeyboardLayout

EnumThreadWindows

EnumWindows

GetKeyNameTextA

GetKeyState

GetKeyboardLayout

GetKeyboardLayoutList

GetKeyboardState

GetKeyboardType

LoadKeyboardLayoutA

MapVirtualKeyA

MsgWaitForMultipleObjects

SetWindowsHookExA

UnhookWindowsHookEx

VprK|%Ud

€00404

8 @ @ @ @ @

.text

`.data

.idata

@.edata

@.rsrc

@.reloc

70"!(&&$

External exception %x

Interface not supported

%s (%s, line %d)

Abstract Error?Access violation at address %p in module '%s'. %s of address %p

Win32 Error. Code: %d.

Invalid pointer operation

Invalid class typecast0Access violation at address %p. %s of address %p

Operation aborted%Exception %s in module %s at %p.

Application Error1Format '%s' invalid or incompatible with argument

No argument for format '%s'

Invalid variant operation"Variant method calls not supported

I/O error %d

Integer overflow Invalid floating point operation

Invalid data type for '%s'

Failed to set data for '%s'

Failed to get data for '%s'/Menu '%s' is already being used by another form*Windows socket error: %s (%d), on API '%s'

Asynchronous socket error %d

- Dock zone has no control%List does not allow duplicates ($0%x)!'%s' is not a valid integer value

Alt  Clipboard does not support Icons

!Control '%s' has no parent window

Error reading %s%s%s: %s

Ancestor for '%s' not found

Unsupported clipboard format

Class %s not found

Resource %s not found

List index out of bounds (%d) List capacity out of bounds (%d)

List count out of bounds (%d) Operation not allowed on sorted string list%String list does not allow duplicates#A component named %s already exists$''%s'' is not a valid component name

A class named %s already exists

Cannot assign a %s to a %s

Cannot create file %s

Cannot open file %s

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. Terminate malicious process(es) (How to End a Process With the Task Manager):
   

   5ze4r5y5ry1DLL.exe:1168
   %original file name%.exe:1552
   

2. Delete the original Backdoor file.
   
3. Delete or disinfect the following files created/modified by the Backdoor:
   

   %Documents and Settings%\%current user%\Application Data\Microsoft\svchost.exe (1425 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\jmd1.tmp (11010 bytes)
   %WinDir%\Explorer32DLL.exe (23913 bytes)
   %WinDir%\5ze4r5y5ry1DLL.exe (307 bytes)

4. Delete the following value(s) in the autorun key (How to Work with System Registry):
   

   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "svchost.exe" = "%Documents and Settings%\%current user%\Application Data\Microsoft\svchost.exe"
   
   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "Explorer" = "%WinDir%\Explorer32DLL.exe"
   
   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   "Explorer" = "%WinDir%\Explorer32DLL.exe"

5. Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
   
6. Reboot the computer.
   

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