MD5: d78e936899b2d7cc9a54966c2069d047
SHA1: 7b2a87a026b1b1f7b720de9a570acb10faab060e
SHA256: 9751b597363ad88763c26d59110f638d74069ecf6d8c558a3be1a5d6697ef1fa
SSDeep: 3072:EGu9BlfzWIbXWm w0JK5Lgp9la/Rqb/4Mg6VQ21zYdXTOJMXfUhaQ3J7L:E/0uotla/e4Mg6VD1zYRO68oQ
Size: 184832 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2008-04-13 21:32:45
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):

Cryptado.exe:1240
Cryptado.exe:2028
Cryptado.exe:1480
Cryptado.exe:1300
%original file name%.exe:1648

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

notepad.exe:1072
svchost.exe:1496

Mutexes

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

File activity

The process %original file name%.exe:1648 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\IXP000.TMP\Cryptado.exe (2784 bytes)

The Backdoor deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\IXP000.TMP\Cryptado.exe (0 bytes)

The process notepad.exe:1072 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\Windows\i2kdM89PH2Sj.dat (322 bytes)
%System%\System32\svshost.exe (673 bytes)

Registry activity

The process Cryptado.exe:1240 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D9 57 D6 71 85 4B 6D 7C 4A 64 6F F7 58 D8 50 93"

The Backdoor deletes the following registry key(s):

[HKCU\Software\Microsoft\MediaPlayer\Health\{A02EC1FC-CFFC-46EB-AF31-88DC9409840C}]

The process Cryptado.exe:2028 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "BB 4E B3 AA 25 E7 C3 6B 8F 3F 62 13 B8 63 0F FF"

[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\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

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

[HKCU\Software\XtremeRAT]
"Mutex" = "i2kdM89PH2Sj"

The Backdoor deletes the following registry key(s):

[HKCU\Software\XtremeRAT]

The process Cryptado.exe:1480 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "03 78 29 21 0A 3B 81 09 0F 08 A9 4B CD B7 97 8D"

[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\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

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

[HKCU\Software\XtremeRAT]
"Mutex" = "i2kdM89PH2Sj"

The process Cryptado.exe:1300 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "A8 9E 2C 89 3C 83 34 FF 47 24 E9 3A F3 9A 30 C3"

The Backdoor deletes the following registry key(s):

[HKCU\Software\Microsoft\MediaPlayer\Health\{F06B3D8D-9E9C-427D-99AB-AAC0C9A370A3}]

The process %original file name%.exe:1648 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "69 C3 1C 86 B8 3D 50 C3 E3 AB BE 00 F8 2E 42 16"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce]
"wextract_cleanup0" = "rundll32.exe %System%\advpack.dll,DelNodeRunDLL32 C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\IXP000.TMP\"

The Backdoor deletes the following value(s) in system registry:
The Backdoor disables automatic startup of the application by deleting the following autorun value:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce]
"wextract_cleanup0"

The process notepad.exe:1072 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{TVJ3D5PS-H16L-W7SR-V351-0716AO2D1WQA}]
"StubPath" = "%System%\System32\svshost.exe restart"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Directory" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CacheLimit" = "65452"
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache4"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 1E 00 00 00 01 00 00 00 00 00 00 00"

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

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache3"

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

[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"ID" = "1208111751"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"

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

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

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

[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"Name" = "notepad.exe"

[HKLM\System\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"

[HKCU\Software\i2kdM89PH2Sj]
"ServerStarted" = "22/07/2016 20:39:53"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "2D 32 AD 55 FA 15 7D 84 93 F0 FE 73 2D 20 46 9F"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache1"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CacheLimit" = "65452"

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

[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\i2kdM89PH2Sj]
"ServerName" = "%System%\System32\svshost.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Paths" = "4"

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

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]
"Win32" = "%System%\System32\svshost.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"

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]
"SkypeUpdate" = "%System%\System32\svshost.exe"

Proxy settings are disabled:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

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"

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

"ProxyBypass" = "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:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"Win32" = "%System%\System32\svshost.exe"

The Backdoor deletes the following value(s) in system registry:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"AutoConfigURL"
"ProxyServer"
"ProxyOverride"

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: Microsoft Corporation
Product Name: HD Player
Product Version: 6.00.2900.5512
Legal Copyright: (c) Microsoft Corporation. Todos os direitos reservados.
Legal Trademarks:
Original Filename: WEXTRACT.EXE
Internal Name: Wextract
File Version: 6.00.2900.5512 (xpsp.080413-2105)
File Description: Auto-extrator de arquivo de gabinete Win32
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):

.text

`.data

.rsrc

ADVAPI32.dll

KERNEL32.dll

NTDLL.DLL

RPCRT4.dll

NETAPI32.dll

ole32.dll

ntdll.dll

RegCloseKey

RegOpenKeyExW

GetProcessHeap

NtOpenKey

svchost.pdb

\PIPE\

Software\Microsoft\Windows NT\CurrentVersion\Svchost

\Registry\Machine\System\CurrentControlSet\Control\SecurePipeServers\

5.1.2600.5512 (xpsp.080413-2111)

svchost.exe

Windows

Operating System

5.1.2600.5512

svchost.exe_1496_rwx_10000000_0004D000:

`.rsrc

ServerKeyloggerU

789:;<&'()* ,-./12345

%SERVER%

URLMON.DLL

shell32.dll

hXXp://

advapi32.dll

kernel32.dll

mpr.dll

version.dll

comctl32.dll

gdi32.dll

opengl32.dll

user32.dll

wintrust.dll

msimg32.dll

KWindows

TServerKeylogger

GetWindowsDirectoryW

RegOpenKeyExW

RegCreateKeyW

RegCloseKey

RegOpenKeyExA

FindExecutableW

ShellExecuteW

SHDeleteKeyW

URLDownloadToCacheFileW

UnhookWindowsHookEx

SetWindowsHookExW

MapVirtualKeyW

GetKeyboardLayout

GetKeyState

GetKeyboardType

GetKeyboardState

FtpPutFileW

FtpSetCurrentDirectoryW

.idata

.rdata

P.reloc

P.rsrc

URLDb

KERNEL32.DLL

ntdll.dll

oleaut32.dll

shlwapi.dll

wininet.dll

x.html

HKEY_CLASSES_ROOT

HKEY_CURRENT_USER

HKEY_LOCAL_MACHINE

HKEY_USERS

HKEY_CURRENT_CONFIG

[Execute]

KeyDelBackspace

<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">

.html

XtremeKeylogger

Software\Microsoft\Windows\CurrentVersion\Run

.functions

icon=shell32.dll,4

shellexecute=

autorun.inf

\Microsoft\Windows\

ÞFAULTBROWSER%

svchost.exe

amandauk.no-ip.org

svshost.exe

notepad.exe

{TVJ3D5PS-H16L-W7SR-V351-0716AO2D1WQA}

HKCU\Software\Microsoft\Windows\CurrentVersion\Run

d.exe

PTF.ftpserver.com

ftpuser

notepad.exe_1072:

.text

`.data

.rsrc

comdlg32.dll

SHELL32.dll

WINSPOOL.DRV

COMCTL32.dll

msvcrt.dll

ADVAPI32.dll

KERNEL32.dll

NTDLL.DLL

GDI32.dll

USER32.dll

notepad.chm

hhctrl.ocx

CLSID\{ADB880A6-D8FF-11CF-9377-00AA003B7A11}\InprocServer32

notepad.pdb

t%SSh

_acmdln

RegCloseKey

RegCreateKeyW

RegOpenKeyExA

SetViewportExtEx

GetKeyboardLayout

name="Microsoft.Windows.Shell.notepad"

version="5.1.0.0"

<description>Windows Shell</description>

name="Microsoft.Windows.Common-Controls"

version="6.0.0.0"

publicKeyToken="6595b64144ccf1df"

&*$#$$#$*

MMMrMMM`MMMRMMMFMMM:MMM.MMM"MMM

*.txt

/.SETUP

5.1.2600.5512 (xpsp.080413-2105)

NOTEPAD.EXE

Windows

Operating System

5.1.2600.5512

notepad.hlp

Text Documents (*.txt)

You cannot quit Windows because the Save As dialog

dialog box, and then try quitting Windows again.

Common Dialog error (0xx)

Not enough memory available to complete this operation. Quit one or more applications to increase available memory, and then try again.KThe %% file is too large for Notepad.

Not a valid file name.MCannot create the %% file.

Make sure that the path and filename are correct.RCannot carry out the Word Wrap command because there is too much text in the file.

Page %d

Ln %d, Col %d

notepad.exe_1072_rwx_10000000_0004D000:

`.rsrc

ServerKeyloggerU

789:;<&'()* ,-./12345

%SERVER%

URLMON.DLL

shell32.dll

hXXp://

advapi32.dll

kernel32.dll

mpr.dll

version.dll

comctl32.dll

gdi32.dll

opengl32.dll

user32.dll

wintrust.dll

msimg32.dll

KWindows

TServerKeylogger

GetWindowsDirectoryW

RegOpenKeyExW

RegCreateKeyW

RegCloseKey

RegOpenKeyExA

FindExecutableW

ShellExecuteW

SHDeleteKeyW

URLDownloadToCacheFileW

UnhookWindowsHookEx

SetWindowsHookExW

MapVirtualKeyW

GetKeyboardLayout

GetKeyState

GetKeyboardType

GetKeyboardState

FtpPutFileW

FtpSetCurrentDirectoryW

.idata

.rdata

P.reloc

P.rsrc

URLDb

KERNEL32.DLL

ntdll.dll

oleaut32.dll

shlwapi.dll

wininet.dll

x.html

HKEY_CLASSES_ROOT

HKEY_CURRENT_USER

HKEY_LOCAL_MACHINE

HKEY_USERS

HKEY_CURRENT_CONFIG

[Execute]

KeyDelBackspace

<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">

.html

XtremeKeylogger

Software\Microsoft\Windows\CurrentVersion\Run

.functions

icon=shell32.dll,4

shellexecute=

autorun.inf

\Microsoft\Windows\

ÞFAULTBROWSER%

svchost.exe

amandauk.no-ip.org

svshost.exe

notepad.exe

{TVJ3D5PS-H16L-W7SR-V351-0716AO2D1WQA}

HKCU\Software\Microsoft\Windows\CurrentVersion\Run

d.exe

PTF.ftpserver.com

ftpuser

C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\IXP000.TMP\Cryptado.exe

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):
   

   Cryptado.exe:1240
   Cryptado.exe:2028
   Cryptado.exe:1480
   Cryptado.exe:1300
   %original file name%.exe:1648
   

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

   %Documents and Settings%\%current user%\Local Settings\Temp\IXP000.TMP\Cryptado.exe (2784 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
   %Documents and Settings%\%current user%\Application Data\Microsoft\Windows\i2kdM89PH2Sj.dat (322 bytes)
   %System%\System32\svshost.exe (673 bytes)

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

   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce]
   "wextract_cleanup0" = "rundll32.exe %System%\advpack.dll,DelNodeRunDLL32 C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\IXP000.TMP\"
   
   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "Win32" = "%System%\System32\svshost.exe"
   
   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "SkypeUpdate" = "%System%\System32\svshost.exe"
   
   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   "Win32" = "%System%\System32\svshost.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.