Gen.Variant.Daytre.2_7456ac27e2 – Adaware

Dynamic Analysis

Payload

Behaviour	Description
IRCBot	A bot can communicate with command and control servers via IRC channel.
MSNWorm	A worm can spread its copies through the MSN Messanger.

Process activity

The Trojan creates the following process(es):

dllcache.exe:164
gfi.exe:1632
%original file name%.exe:1328

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

dllcache.exe:456

Mutexes

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

File activity

The process gfi.exe:1632 makes changes in the file system.

The Trojan 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%\Local Settings\History\History.IE5\desktop.ini (159 bytes)
%WinDir%\dllcache.exe (45 bytes)

The process %original file name%.exe:1328 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\IXP000.TMP\gfi.exe (1568 bytes)

The Trojan deletes the following file(s):

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

Registry activity

The process dllcache.exe:456 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "37 99 A6 CD 60 8D 7C D2 C6 9D F0 17 7F 1E 7F F5"

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

[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\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"

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

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

[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"

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

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

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

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

The process gfi.exe:1632 makes changes in the system registry.

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

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

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

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "B3 4D 38 CC DD 02 B9 03 D5 1D 89 ED AA 34 6D EC"

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

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

[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 Trojan adds the following link to its file to the system registry autorun key:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"Windows Dynamic Library Cache" = "dllcache.exe"

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:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"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 Trojan modifies IE settings for security zones to map all urls to the Intranet Zone:

"IntranetName" = "1"

The process %original file name%.exe:1328 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "CF 6A B8 12 C2 E4 F5 CD F7 BA 57 AF 5A 1A 1D ED"

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

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

The Trojan disables automatic startup of the application by deleting the following autorun value:

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

Dropped PE files

MD5	File path
d2d1c171b86f69ce075f934cb2507e6b	c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\IXP000.TMP\gfi.exe
d2d1c171b86f69ce075f934cb2507e6b	c:\WINDOWS\dllcache.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

A worm can spread its copies through the MSN Messanger.

Removals

Remove it with Ad-Aware

Click (here) to download and install Ad-Aware Free Antivirus.
Update the definition files.
Run a full scan of your computer.

Manual removal*

Terminate malicious process(es) (How to End a Process With the Task Manager):
dllcache.exe:164
gfi.exe:1632
%original file name%.exe:1328
Delete the original Trojan file.
Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\History\History.IE5\desktop.ini (159 bytes)
%WinDir%\dllcache.exe (45 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\IXP000.TMP\gfi.exe (1568 bytes)
Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"Windows Dynamic Library Cache" = "dllcache.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce]
"wextract_cleanup0" = "rundll32.exe %System%\advpack.dll,DelNodeRunDLL32 C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\IXP000.TMP\"
Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
Reboot the computer.

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

Static Analysis

VersionInfo

Company Name: Microsoft Corporation
Product Name: HD Player
Product Version: 6.00.3790.0
Legal Copyright: (c) Microsoft Corporation. All rights reserved.
Legal Trademarks:
Original Filename: WEXTRACT.EXE
Internal Name: Wextract
File Version: 6.00.3790.0 (srv03_rtm.030324-2048)
File Description: Win32 Cabinet Self-Extractor
Comments:
Language: Language Neutral

Company Name: Microsoft CorporationProduct Name: HD Player Product Version: 6.00.3790.0Legal Copyright: (c) Microsoft Corporation. All rights reserved.Legal Trademarks: Original Filename: WEXTRACT.EXE Internal Name: Wextract File Version: 6.00.3790.0 (srv03_rtm.030324-2048)File Description: Win32 Cabinet Self-Extractor Comments: Language: Language Neutral

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	4096	36724	36864	4.58728	912623f777d72e09b3e33e3eb3b92ecc
.data	40960	7148	1024	2.94452	b67e6b028734fe3692a3080d8ebfe3b1
.rsrc	49152	59712	59904	4.77006	b6b40046b64b4270fc8401207b88156a

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

URL	IP
hxxp://301.myspace.com/Browse/Browse.aspx
hxxp://browseusers.myspace.com/Browse/Browse.aspx	63.135.90.70
myspace.com	63.135.90.70

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

GET /Browse/Browse.aspx 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: browseusers.myspace.com

Connection: Keep-Alive

HTTP/1.1 301 Moved Permanently

Location: hXXps://myspace.com/

Connection: close

Cache-Control: no-cache

Pragma: no-cache

Map

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

Strings from Dumps

dllcache.exe_456:

.text

`.rdata

@.data

t1SSSSh

SSSh|

r.getfile

r.new

r.update

r.upd4te

login

msn.msg

msn.stop

aim.msg

aim.stop

triton.msg

triton.stop

GetWindowsDirectoryA

KERNEL32.dll

VkKeyScanA

keybd_event

USER32.dll

MSVCRT.dll

_acmdln

RegCloseKey

RegCreateKeyExA

ADVAPI32.dll

ole32.dll

OLEAUT32.dll

%s Welcome.

%s Fail.

%s Spy: %s!%s@%s (PM: "%s")

%s Fail by: %s!%s@%s (Pass Tried: %s)

%s %s out.

%s out.

%s No user at:

%s Invalid slot:

%s Kill: threads

%s No threads

%s Killed thread:

%s Failed kt:

%s %s already running: .

%s Fail start %s, err: .

%s Status: %s. Box Uptime: %s, Bot Uptime: %s, Connected for: %s.

%s Bot installed on: %s.

Go fuck yourself %s.

MSN// Message & Zipfile sent to: %d contacts.

MSN// Message sent to: %d Contacts.

MSN// Sent Stats - Messages: %d :: Files: %d :: Message & Files: %d.

%s logged in.

Removed by: %s!%s@%s

%s Advapi.dll Failed

%s PStore.dll Failed.

%s Naim thd.

%s RuC.

%s mis param.

%s Failed to parse command.

%s Downloading URL: %s to: %s.

%s Downloading update from: %s to: %s.

%seraseme_%d%d%d%d%d.exe

%s Thread Disabled.

%s Thread Activated: Sending Message.

%s Bad URL or DNS Error, error:

%s Update failed: Error executing file: %s.

%s Process Finished: "%s", Total Running Time: %s.

%s Created process: "%s", PID:

%s Failed to create process: "%s", error:

%s Couldn't parse path, error:

%s File download: %.1fKB to: %s @ %.1fKB/sec.

%s Couldn't open file for writing: %s.

Ping Timeout? (%d-%d)%d/%d

USER %s * 0 :%s

NICK %s

PASS %s

QUIT %s

PONG %s

NICK

PRIVMSG

JOIN

PRIVMSG %s :%s

JOIN %s

JOIN %s %s

MODE %s %s %s

MODE %s %s

__oxFrame.class__

shlwapi.dll

psapi.dll

SQLDisconnect

SQLFreeHandle

SQLAllocHandle

SQLExecDirect

SQLSetEnvAttr

SQLDriverConnect

odbc32.dll

ShellExecuteA

shell32.dll

mpr.dll

GetUdpTable

GetTcpTable

iphlpapi.dll

dnsapi.dll

netapi32.dll

Mozilla/4.0 (compatible)

InternetCrackUrlA

InternetOpenUrlA

FtpPutFileA

FtpGetFileA

HttpSendRequestA

HttpOpenRequestA

wininet.dll

ws2_32.dll

RegEnumKeyExA

advapi32.dll

user32.dll

kernel32.dll

%s!%s@%s

dllcache.exe

*!*@fbi.gov

Windows Dynamic Library Cache

cache.stupidnsm.cn

hXXp://browseusers.myspace.com/Browse/Browse.aspx

SOFTWARE\Microsoft\Windows\CurrentVersion\Run\

%s\%s

%s No %s thread found.

%s %s thread stopped. (%d thread(s) stopped.)

del "%s">nul

if exist "%s" goto Repeat

ping 0.0.0.0>nul

%s\removeMe%i%i%i%i.bat

192.168.11.129

dllcache.exe_456_rwx_00400000_0004C000:

.text

`.rdata

@.data

t1SSSSh

SSSh|

r.getfile

r.new

r.update

r.upd4te

login

msn.msg

msn.stop

aim.msg

aim.stop

triton.msg

triton.stop

GetWindowsDirectoryA

KERNEL32.dll

VkKeyScanA

keybd_event

USER32.dll

MSVCRT.dll

_acmdln

RegCloseKey

RegCreateKeyExA

ADVAPI32.dll

ole32.dll

OLEAUT32.dll

%s Welcome.

%s Fail.

%s Spy: %s!%s@%s (PM: "%s")

%s Fail by: %s!%s@%s (Pass Tried: %s)

%s %s out.

%s out.

%s No user at:

%s Invalid slot:

%s Kill: threads

%s No threads

%s Killed thread:

%s Failed kt:

%s %s already running: .

%s Fail start %s, err: .

%s Status: %s. Box Uptime: %s, Bot Uptime: %s, Connected for: %s.

%s Bot installed on: %s.

Go fuck yourself %s.

MSN// Message & Zipfile sent to: %d contacts.

MSN// Message sent to: %d Contacts.

MSN// Sent Stats - Messages: %d :: Files: %d :: Message & Files: %d.

%s logged in.

Removed by: %s!%s@%s

%s Advapi.dll Failed

%s PStore.dll Failed.

%s Naim thd.

%s RuC.

%s mis param.

%s Failed to parse command.

%s Downloading URL: %s to: %s.

%s Downloading update from: %s to: %s.

%seraseme_%d%d%d%d%d.exe

%s Thread Disabled.

%s Thread Activated: Sending Message.

%s Bad URL or DNS Error, error:

%s Update failed: Error executing file: %s.

%s Process Finished: "%s", Total Running Time: %s.

%s Created process: "%s", PID:

%s Failed to create process: "%s", error:

%s Couldn't parse path, error:

%s File download: %.1fKB to: %s @ %.1fKB/sec.

%s Couldn't open file for writing: %s.

Ping Timeout? (%d-%d)%d/%d

USER %s * 0 :%s

NICK %s

PASS %s

QUIT %s

PONG %s

NICK

PRIVMSG

JOIN

PRIVMSG %s :%s

JOIN %s

JOIN %s %s

MODE %s %s %s

MODE %s %s

__oxFrame.class__

shlwapi.dll

psapi.dll

SQLDisconnect

SQLFreeHandle

SQLAllocHandle

SQLExecDirect

SQLSetEnvAttr

SQLDriverConnect

odbc32.dll

ShellExecuteA

shell32.dll

mpr.dll

GetUdpTable

GetTcpTable

iphlpapi.dll

dnsapi.dll

netapi32.dll

Mozilla/4.0 (compatible)

InternetCrackUrlA

InternetOpenUrlA

FtpPutFileA

FtpGetFileA

HttpSendRequestA

HttpOpenRequestA

wininet.dll

ws2_32.dll

RegEnumKeyExA

advapi32.dll

user32.dll

kernel32.dll

%s!%s@%s

dllcache.exe

*!*@fbi.gov

Windows Dynamic Library Cache

cache.stupidnsm.cn

hXXp://browseusers.myspace.com/Browse/Browse.aspx

SOFTWARE\Microsoft\Windows\CurrentVersion\Run\

%s\%s

%s No %s thread found.

%s %s thread stopped. (%d thread(s) stopped.)

del "%s">nul

if exist "%s" goto Repeat

ping 0.0.0.0>nul

%s\removeMe%i%i%i%i.bat

192.168.11.129

iexplore.exe_1692:

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

.text

`.data

.rsrc

msvcrt.dll

KERNEL32.dll

NTDLL.DLL

USER32.dll

SHLWAPI.dll

SHDOCVW.dll

Software\Microsoft\Windows\CurrentVersion\Explorer\BrowseNewProcess

IE-X-X

rsabase.dll

System\CurrentControlSet\Control\Windows

dw15 -x -s %u

watson.microsoft.com

IEWatsonURL

%s -h %u

iedw.exe

Iexplore.XPExceptionFilter

jscript.DLL

mshtml.dll

mlang.dll

urlmon.dll

wininet.dll

shdocvw.DLL

browseui.DLL

comctl32.DLL

IEXPLORE.EXE

iexplore.pdb

ADVAPI32.dll

MsgWaitForMultipleObjects

IExplorer.EXE

IIIIIB(II<.fg>

7?_____ZZSSH%

)z.UUUUUUUU

,....Qym

````2```

{.QLQIIIKGKGKGKGKGKG

;33;33;0

8888880

8887080

browseui.dll

shdocvw.dll

6.00.2900.5512 (xpsp.080413-2105)

Windows

Operating System

6.00.2900.5512

Summary

Dynamic Analysis

Removals

Static Analysis

Network Activity

Map

Strings from Dumps