Trojan.GenericKD.3338268_9c418a3e00

Dynamic Analysis

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:1504
Tempserver.exe:1744
Tempserver.exe:1752

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

svchost.exe:1400
iexplore.exe:460

Mutexes

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

File activity

The process %original file name%.exe:1504 makes changes in the file system.

The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Tempserver.exe (132 bytes)

The process Tempserver.exe:1744 makes changes in the file system.

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\x.html (0 bytes)

The process Tempserver.exe:1752 makes changes in the file system.

The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application DataMicrosoft\System\Services\18.exe (673 bytes)
%WinDir%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new (804 bytes)
%WinDir%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new (804 bytes)

Registry activity

The process %original file name%.exe:1504 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "5E F4 9E A8 81 78 CE E0 FC 6F 12 19 2C AB 25 60"

[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"

[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\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\Local Settings]
"Tempserver.exe" = ""

[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]
"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 Tempserver.exe:1744 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C0 AF 92 B6 42 4A 1E 1C 95 5B DB 60 AC 4B 4C D1"

[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" = "qy6ac30V4"

The process Tempserver.exe:1752 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "50 64 E4 99 FD 63 C7 30 99 8F D9 44 78 7C E3 F9"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Program Files%\Internet Explorer]
"iexplore.exe" = "Internet Explorer"

[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"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"18.exe" = "%Documents and Settings%\%current user%\Application DataMicrosoft\System\Services\18.exe"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"18.exe" = "%Documents and Settings%\%current user%\Application DataMicrosoft\System\Services\18.exe"

Dropped PE files

MD5	File path
b7912a4d1356e953bf90d5e7fd9e14fb	c:\Documents and Settings\"%CurrentUserName%"\Application DataMicrosoft\System\Services\18.exe
b7912a4d1356e953bf90d5e7fd9e14fb	c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Tempserver.exe
b7912a4d1356e953bf90d5e7fd9e14fb	c:\WINDOWS\InstallDir\r.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.

Removals

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:1504
   Tempserver.exe:1744
   Tempserver.exe:1752
   

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\Tempserver.exe (132 bytes)
   %Documents and Settings%\%current user%\Application DataMicrosoft\System\Services\18.exe (673 bytes)
   %WinDir%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new (804 bytes)
   %WinDir%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new (804 bytes)

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

   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   "18.exe" = "%Documents and Settings%\%current user%\Application DataMicrosoft\System\Services\18.exe"
   
   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "18.exe" = "%Documents and Settings%\%current user%\Application DataMicrosoft\System\Services\18.exe"

5. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
   
6. Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
   
7. Reboot the computer.
   

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

Static Analysis

VersionInfo

Company Name: Microsoft
Product Name: A
Product Version: 1.0.0.0
Legal Copyright: Copyright (c) Microsoft 2016
Legal Trademarks:
Original Filename: A.exe
Internal Name: A.exe
File Version: 1.0.0.0
File Description: A
Comments:
Language: Language Neutral

Company Name: MicrosoftProduct Name: AProduct Version: 1.0.0.0Legal Copyright: Copyright (c) Microsoft 2016Legal Trademarks: Original Filename: A.exeInternal Name: A.exeFile Version: 1.0.0.0File Description: AComments: Language: Language Neutral

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	8192	143252	143360	4.79709	20bc3dd05557908b55e2a7094d1e15e6
.sdata	155648	122	512	1.22847	250f853e81167b8e8d7b33769963307a
.rsrc	163840	2624	3072	2.51988	2b9e86713d660457c35dc45a0328fc60
.reloc	172032	12	512	0.070639	49867da7dd764280c536213e252be411

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

URL	IP
hxxp://www.google.com/	216.58.214.228
hxxp://www.google.com.ua/?gfe_rd=cr&ei=oQGYV7bLJsjR8gfJl4LgAw	216.58.209.163

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

GET / HTTP/1.1

Accept: */*

Accept-Language: en-us

Accept-Encoding: gzip, deflate

User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET4.0C)

Host: VVV.google.com

Connection: Keep-Alive

HTTP/1.1 302 Found

Cache-Control: private

Content-Type: text/html; charset=UTF-8

Location: hXXp://VVV.google.com.ua/?gfe_rd=cr&ei=oQGYV7bLJsjR8gfJl4LgAw

Content-Length: 262

Date: Wed, 27 Jul 2016 00:34:41 GMT

<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">.<TITLE>302 Moved</TITLE></HEAD><BODY>.<H1>302 Moved</H1>.The document has moved.<A HREF="hXXp://VVV.google.com.ua/?gfe_rd=cr&ei=oQGYV7bLJsjR8gfJl4LgAw">here</A>...</BODY></HTML>..HTTP/1.1 302 Found..Cache-Control: private..Content-Type: text/html; charset=UTF-8..Location: hXXp://VVV.google.com.ua/?gfe_rd=cr&ei=oQGYV7bLJsjR8gfJl4LgAw..Content-Length: 262..Date: Wed, 27 Jul 2016 00:34:41 GMT..<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">.<TITLE>302 Moved</TITLE></HEAD><BODY>.<H1>302 Moved</H1>.The document has moved.<A HREF="hXXp://VVV.google.com.ua/?gfe_rd=cr&ei=oQGYV7bLJsjR8gfJl4LgAw">here</A>...</BODY></HTML>....

GET /?gfe_rd=cr&ei=oQGYV7bLJsjR8gfJl4LgAw HTTP/1.1

Accept: */*

Accept-Language: en-us

Accept-Encoding: gzip, deflate

User-Agent: Mozilla/4.0 (compatible; MSIE 6.0; Windows NT 5.1; SV1; .NET CLR 2.0.50727; .NET CLR 3.0.04506.648; .NET CLR 3.5.21022; .NET4.0C)

Host: VVV.google.com.ua

Connection: Keep-Alive

HTTP/1.1 302 Found

Location: hXXps://VVV.google.com.ua/?gfe_rd=cr&ei=oQGYV7bLJsjR8gfJl4LgAw&gws_rd=ssl

Cache-Control: private

Content-Type: text/html; charset=UTF-8

P3P: CP="This is not a P3P policy! See hXXps://VVV.google.com/support/accounts/answer/151657?hl=en for more info."

Date: Wed, 27 Jul 2016 00:34:41 GMT

Server: gws

Content-Length: 278

X-XSS-Protection: 1; mode=block

X-Frame-Options: SAMEORIGIN

Set-Cookie: NID=83=YPA3G_HxY9KF9Z68f6e2DqURa0hKzpWOPlLc1ix6_YOtCC9-Vek06NgzwTx7x5ixpeyvsgr42mM-Zq0KVN9fTjOOn02uI5iOaKdrS9DoTgVcI8DjhxqJEIQpUbnWOedk; expires=Thu, 26-Jan-2017 00:34:41 GMT; path=/; domain=.google.com.ua; HttpOnly

<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">.<TITLE>302 Moved</TITLE></HEAD><BODY>.<H1>302 Moved</H1>.The document has moved.<A HREF="hXXps://VVV.google.com.ua/?gfe_rd=cr&ei=oQGYV7bLJsjR8gfJl4LgAw&gws_rd=ssl">here</A>...</BODY></HTML>..HTTP/1.1 302 Found..Location: hXXps://VVV.google.com.ua/?gfe_rd=cr&ei=oQGYV7bLJsjR8gfJl4LgAw&gws_rd=ssl..Cache-Control: private..Content-Type: text/html; charset=UTF-8..P3P: CP="This is not a P3P policy! See hXXps://VVV.google.com/support/accounts/answer/151657?hl=en for more info."..Date: Wed, 27 Jul 2016 00:34:41 GMT..Server: gws..Content-Length: 278..X-XSS-Protection: 1; mode=block..X-Frame-Options: SAMEORIGIN..Set-Cookie: NID=83=YPA3G_HxY9KF9Z68f6e2DqURa0hKzpWOPlLc1ix6_YOtCC9-Vek06NgzwTx7x5ixpeyvsgr42mM-Zq0KVN9fTjOOn02uI5iOaKdrS9DoTgVcI8DjhxqJEIQpUbnWOedk; expires=Thu, 26-Jan-2017 00:34:41 GMT; path=/; domain=.google.com.ua; HttpOnly..<HTML><HEAD><meta http-equiv="content-type" content="text/html;charset=utf-8">.<TITLE>302 Moved</TITLE></HEAD><BODY>.<H1>302 Moved</H1>.The document has moved.<A HREF="hXXps://VVV.google.com.ua/?gfe_rd=cr&ei=oQGYV7bLJsjR8gfJl4LgAw&gws_rd=ssl">here</A>...</BODY></HTML>....

<<< skipped >>>

Map

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

Strings from Dumps

iexplore.exe_2000:

%?9-*09,*19}*09

%?9-*09,*19}*09

.text

.text

`.data

`.data

.rsrc

.rsrc

msvcrt.dll

msvcrt.dll

KERNEL32.dll

KERNEL32.dll

NTDLL.DLL

NTDLL.DLL

USER32.dll

USER32.dll

SHLWAPI.dll

SHLWAPI.dll

SHDOCVW.dll

SHDOCVW.dll

Software\Microsoft\Windows\CurrentVersion\Explorer\BrowseNewProcess

Software\Microsoft\Windows\CurrentVersion\Explorer\BrowseNewProcess

IE-X-X

IE-X-X

rsabase.dll

rsabase.dll

System\CurrentControlSet\Control\Windows

System\CurrentControlSet\Control\Windows

dw15 -x -s %u

dw15 -x -s %u

watson.microsoft.com

watson.microsoft.com

IEWatsonURL

IEWatsonURL

%s -h %u

%s -h %u

iedw.exe

iedw.exe

Iexplore.XPExceptionFilter

Iexplore.XPExceptionFilter

jscript.DLL

jscript.DLL

mshtml.dll

mshtml.dll

mlang.dll

mlang.dll

urlmon.dll

urlmon.dll

wininet.dll

wininet.dll

shdocvw.DLL

shdocvw.DLL

browseui.DLL

browseui.DLL

comctl32.DLL

comctl32.DLL

IEXPLORE.EXE

IEXPLORE.EXE

iexplore.pdb

iexplore.pdb

ADVAPI32.dll

ADVAPI32.dll

MsgWaitForMultipleObjects

MsgWaitForMultipleObjects

IExplorer.EXE

IExplorer.EXE

IIIIIB(II<.fg>

IIIIIB(II<.fg>

7?_____ZZSSH%

7?_____ZZSSH%

)z.UUUUUUUU

)z.UUUUUUUU

,....Qym

,....Qym

````2```

````2```

{.QLQIIIKGKGKGKGKGKG

{.QLQIIIKGKGKGKGKGKG

;33;33;0

;33;33;0

8888880

8888880

8887080

8887080

browseui.dll

browseui.dll

shdocvw.dll

shdocvw.dll

6.00.2900.5512 (xpsp.080413-2105)

6.00.2900.5512 (xpsp.080413-2105)

Windows

Windows

Operating System

Operating System

6.00.2900.5512

6.00.2900.5512

svchost.exe_1400:

.text

.text

`.data

`.data

.rsrc

.rsrc

ADVAPI32.dll

ADVAPI32.dll

KERNEL32.dll

KERNEL32.dll

NTDLL.DLL

NTDLL.DLL

RPCRT4.dll

RPCRT4.dll

NETAPI32.dll

NETAPI32.dll

ole32.dll

ole32.dll

ntdll.dll

ntdll.dll

RegCloseKey

RegCloseKey

RegOpenKeyExW

RegOpenKeyExW

GetProcessHeap

GetProcessHeap

NtOpenKey

NtOpenKey

svchost.pdb

svchost.pdb

\PIPE\

\PIPE\

Software\Microsoft\Windows NT\CurrentVersion\Svchost

Software\Microsoft\Windows NT\CurrentVersion\Svchost

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

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

5.1.2600.5512 (xpsp.080413-2111)

5.1.2600.5512 (xpsp.080413-2111)

svchost.exe

svchost.exe

Windows

Windows

Operating System

Operating System

5.1.2600.5512

5.1.2600.5512

svchost.exe_1400_rwx_10000000_0004D000:

`.rsrc

`.rsrc

ServerKeyloggerU

ServerKeyloggerU