Worm.Win32.AutoItGen_66f311a184

by malwarelabrobot on July 7th, 2014 in Malware Descriptions.

HEUR:Trojan.Win32.Generic (Kaspersky), Worm.Generic.508568 (AdAware), Worm.Win32.AutoIt.FD, WormAutoItGen.YR (Lavasoft MAS)
Behaviour: Trojan, Worm


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: 66f311a18496ee51fb920cdd405441a7
SHA1: 566029d87952aee0471f8f0475693ac2c6644804
SHA256: 44de2e686b148cb58dac14585dd24386476074824500205091402b771325a93b
SSDeep: 12288:raWzgMg7v3qnCiMErQohh0F4CCJ8lnyC8nTfGDMHRH0IkEEJBPo7IAyUEXQZ:eaHMv6CorjqnyC8T DMxKEEJ 7IAlE
Size: 1120423 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: Appinstallr
Created at: 2010-04-16 10:47:33
Analyzed on: WindowsXP SP3 32-bit


Summary:

Worm. A program that is primarily replicating on networks or removable drives.

Payload

No specific payload has been found.

Process activity

The Worm creates the following process(es):

%original file name%.exe:392

The Worm injects its code into the following process(es):
No processes have been created.

Mutexes

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

File activity

The process %original file name%.exe:392 makes changes in the file system.
The Worm creates and/or writes to the following file(s):

%WinDir%\okiloveme.exe (7547 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\autB3.tmp (3097 bytes)
%Documents and Settings%\%current user%\Start Menu\Programs\Startup\ .exe (1425 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\grybinp (784 bytes)
C:\New Folder (2).exe (45282 bytes)
%WinDir%\YahooMessenger.exe (7547 bytes)
%System%\drivers\etc\hosts (77509 bytes)
C:\okiloveme.exe (45282 bytes)
C:\autorun.inf (984 bytes)
C:\New Folder.exe (45282 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\autB2.tmp (2 bytes)
%WinDir%\autorun.inf (317 bytes)
%WinDir%\killer.exe (7547 bytes)

The Worm deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\autB3.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\grybinp (0 bytes)
C:\New Folder (2).exe (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\autB2.tmp (0 bytes)
C:\okiloveme.exe (0 bytes)
C:\autorun.inf (0 bytes)
C:\New Folder.exe (0 bytes)

Registry activity

The process %original file name%.exe:392 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "92 FD A7 B2 86 E7 DC 6E 70 ED C9 E7 B2 05 F1 95"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Startup" = "%Documents and Settings%\%current user%\Start Menu\Programs\Startup"

[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\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Advanced\Folder\Hidden\SHOWALL]
"CheckedValue" = "0"

[HKCR\.vbs]
"(Default)" = "exefile"

[HKCR\.reg]
"(Default)" = "exefile"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Runonce" = "%WinDir%\okiloveme.exe"

The Worm adds the reference to itself to be executed when a user logs on:

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"Shell" = "explorer.exe, killer.exe"

Dropped PE files

MD5 File path
6c363adb2d5827b24ac062ff82edf450 c:\Documents and Settings\"%CurrentUserName%"\Start Menu\Programs\Startup\ .exe

HOSTS file anomalies

The Worm modifies "%System%\drivers\etc\hosts" file which is used to translate DNS entries to IP addresses.
The modified file is 6123 bytes in size. The following strings are added to the hosts file listed below:

173.201.233.47 www.google.ac
173.201.233.47 www.google.ad
173.201.233.47 www.google.ae
173.201.233.47 www.google.am
173.201.233.47 www.google.as
173.201.233.47 www.google.at
173.201.233.47 www.google.az
173.201.233.47 www.google.ba
173.201.233.47 www.google.be
173.201.233.47 www.google.bf
173.201.233.47 www.google.bg
173.201.233.47 www.google.bi
173.201.233.47 www.google.bj
173.201.233.47 www.google.bs
173.201.233.47 www.google.ca
173.201.233.47 www.google.cc
173.201.233.47 www.google.cd
173.201.233.47 www.google.cf
173.201.233.47 www.google.cg
173.201.233.47 www.google.ch
173.201.233.47 www.google.ci
173.201.233.47 www.google.cl
173.201.233.47 www.google.cm
173.201.233.47 www.google.cn
173.201.233.47 www.google.co.bw
173.201.233.47 www.google.co.ck
173.201.233.47 www.google.co.cr
173.201.233.47 www.google.co.id/
173.201.233.47 www.google.co.il/
173.201.233.47 www.google.co.in/
173.201.233.47 www.google.co.jp/
173.201.233.47 www.google.co.ke/
173.201.233.47 www.google.co.kr/
173.201.233.47 www.google.co.ls/
173.201.233.47 www.google.co.ma/
173.201.233.47 www.google.co.mz/
173.201.233.47 www.google.co.nz/
173.201.233.47 www.google.co.th/
173.201.233.47 www.google.co.tz/
173.201.233.47 www.google.co.ug/
173.201.233.47 www.google.co.uk/
173.201.233.47 www.google.co.uz/
173.201.233.47 www.google.co.ve/
173.201.233.47 www.google.co.vi/
173.201.233.47 www.google.co.za
173.201.233.47 www.google.co.zm
173.201.233.47 www.google.co.zw
173.201.233.47 www.google.com.af
173.201.233.47 www.google.com.ag
173.201.233.47 www.google.com.ai
173.201.233.47 www.google.com.ar
173.201.233.47 www.google.com.au
173.201.233.47 www.google.com.bd
173.201.233.47 www.google.com.bh
173.201.233.47 www.google.com.bn
173.201.233.47 www.google.com.bo
173.201.233.47 www.google.com.br
173.201.233.47 www.google.com.by
173.201.233.47 www.google.com.bz
173.201.233.47 www.google.com.co
173.201.233.47 www.google.com.cu
173.201.233.47 www.google.com.do
173.201.233.47 www.google.com.ec
173.201.233.47 www.google.com.eg
173.201.233.47 www.google.com.et
173.201.233.47 www.google.com.fj
173.201.233.47 www.google.com.gh
173.201.233.47 www.google.com.gi
173.201.233.47 www.google.com.gt/
173.201.233.47 www.google.com.hk/
173.201.233.47 www.google.com.jm/
173.201.233.47 www.google.com.kh
173.201.233.47 www.google.com.kw/
173.201.233.47 www.google.com.lb/
173.201.233.47 www.google.com.lc/
173.201.233.47 www.google.com.ly/
173.201.233.47 www.google.com.mt/
173.201.233.47 www.google.com.mx/
173.201.233.47 www.google.com.my/
173.201.233.47 www.google.com.na/
173.201.233.47 www.google.com.nf/
173.201.233.47 www.google.com.ng/
173.201.233.47 www.google.com.ni/
173.201.233.47 www.google.com.np/
173.201.233.47 www.google.com.om/
173.201.233.47 www.google.com.pa/
173.201.233.47 www.google.com.pe/
173.201.233.47 www.google.com.ph/
173.201.233.47 www.google.com.pk/
173.201.233.47 www.google.com.pr/
173.201.233.47 www.google.com.py/
173.201.233.47 www.google.com.qa/
173.201.233.47 www.google.com.sa/
173.201.233.47 www.google.com.sb/
173.201.233.47 www.google.com.sg/
173.201.233.47 www.google.com.sl/
173.201.233.47 www.google.com.sv/
173.201.233.47 www.google.com.tj/
173.201.233.47 www.google.com.tn/
173.201.233.47 www.google.com.tr/
173.201.233.47 www.google.com.tw/
173.201.233.47 www.google.com.ua/
173.201.233.47 www.google.com.uy/
173.201.233.47 www.google.com.vc/
173.201.233.47 www.google.com.vn/
173.201.233.47 www.google.cz
173.201.233.47 www.google.de
173.201.233.47 www.google.dj
173.201.233.47 www.google.dk
173.201.233.47 www.google.dm
173.201.233.47 www.google.dz
173.201.233.47 www.google.ee
173.201.233.47 www.google.es
173.201.233.47 www.google.fi
173.201.233.47 www.google.fm
173.201.233.47 www.google.fr
173.201.233.47 www.google.ga
173.201.233.47 www.google.gd
173.201.233.47 www.google.ge
173.201.233.47 www.google.gf
173.201.233.47 www.google.gg
173.201.233.47 www.google.gl/
173.201.233.47 www.google.gm/
173.201.233.47 www.google.gp/
173.201.233.47 www.google.gr/
173.201.233.47 www.google.gy/
173.201.233.47 www.google.hn/
173.201.233.47 www.google.hr/
173.201.233.47 www.google.ht/
173.201.233.47 www.google.hu/
173.201.233.47 www.google.ie/
173.201.233.47 www.google.im/
173.201.233.47 www.google.io/
173.201.233.47 www.google.iq/
173.201.233.47 www.google.is/
173.201.233.47 www.google.it.ao
173.201.233.47 www.google.it/
173.201.233.47 www.google.je/
173.201.233.47 www.google.jo/
173.201.233.47 www.google.kg/
173.201.233.47 www.google.ki/
173.201.233.47 www.google.kz/
173.201.233.47 www.google.la/
173.201.233.47 www.google.li/
173.201.233.47 www.google.lk/
173.201.233.47 www.google.lt/
173.201.233.47 www.google.lu/
173.201.233.47 www.google.lv/
173.201.233.47 www.google.md/
173.201.233.47 www.google.me/
173.201.233.47 www.google.mg/
173.201.233.47 www.google.mk/
173.201.233.47 www.google.ml/
173.201.233.47 www.google.mn/
173.201.233.47 www.google.ms/
173.201.233.47 www.google.mu/
173.201.233.47 www.google.mv/
173.201.233.47 www.google.mw/
173.201.233.47 www.google.ne/
173.201.233.47 www.google.nl/
173.201.233.47 www.google.no/
173.201.233.47 www.google.nr/
173.201.233.47 www.google.nu/
173.201.233.47 www.google.pl/
173.201.233.47 www.google.pn/
173.201.233.47 www.google.ps/
173.201.233.47 www.google.pt/
173.201.233.47 www.google.ro/
173.201.233.47 www.google.rs/
173.201.233.47 www.google.ru/
173.201.233.47 www.google.rw/
173.201.233.47 www.google.sc/
173.201.233.47 www.google.se/
173.201.233.47 www.google.sh/
173.201.233.47 www.google.si/
173.201.233.47 www.google.sk/
173.201.233.47 www.google.sm/
173.201.233.47 www.google.sn/
173.201.233.47 www.google.st/
173.201.233.47 www.google.td/
173.201.233.47 www.google.tg/
173.201.233.47 www.google.tk/
173.201.233.47 www.google.tl/
173.201.233.47 www.google.tm/
173.201.233.47 www.google.to/
173.201.233.47 www.google.tt/
173.201.233.47 www.google.us/
173.201.233.47 www.google.vg/
173.201.233.47 www.google.vu
173.201.233.47 www.google.ws


Rootkit activity

No anomalies have been detected.

Propagation

VersionInfo

Company Name:
Product Name:
Product Version:
Legal Copyright:
Legal Trademarks:
Original Filename:
Internal Name:
File Version: 3, 3, 6, 1
File Description:
Comments:
Language: Language Neutral

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
.text 4096 524311 524800 4.59884 be1208f841dc92012d5f6bbdd832e6d9
.rdata 532480 55644 55808 3.15553 47a64a37213ad28510461b998d7032c7
.data 589824 107800 26624 1.52615 e5d77411f751d28c6eee48a743606795
.rsrc 700416 111808 112128 2.92257 830fe3a391af0a0a20cc4f69082f8e8f

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 Worm connects to the servers at the folowing location(s):

%original file name%.exe_392:

.text
`.rdata
@.data
.rsrc
s%j.Zf
tGHt.Ht&
tCPh
SSSSh
\$%u#Sj
Please contact the application's support team for more information.
- Attempt to initialize the CRT more than once.
- CRT not initialized
- floating point support not loaded
GetProcessWindowStation
USER32.DLL
operator
This is a compiled AutoIt script. AV researchers please email avsupport@autoitscript.com for support.
uxtheme.dll
kernel32.dll
operand of unlimited repeat could match the empty string
POSIX named classes are supported only within a class
erroffset passed as NULL
POSIX collating elements are not supported
this version of PCRE is not compiled with PCRE_UTF8 support
PCRE does not support \L, \l, \N, \U, or \u
support for \P, \p, and \X has not been compiled
(*VERB) with an argument is not supported
ICMP.DLL
advapi32.dll
RegDeleteKeyExW
KERNEL32.DLL
ADVAPI32.dll
COMCTL32.dll
COMDLG32.dll
GDI32.dll
MPR.dll
ole32.dll
OLEAUT32.dll
PSAPI.DLL
SHELL32.dll
USER32.dll
USERENV.dll
VERSION.dll
WININET.dll
WINMM.dll
WSOCK32.dll
GetProcessHeap
CreatePipe
GetWindowsDirectoryW
GetCPInfo
GetConsoleOutputCP
RegDeleteKeyW
RegCreateKeyExW
RegEnumKeyExW
RegCloseKey
RegOpenKeyExW
SetViewportOrgEx
ShellExecuteExW
SHFileOperationW
ShellExecuteW
RegisterHotKey
GetKeyboardLayoutNameW
ExitWindowsEx
EnumThreadWindows
GetAsyncKeyState
SetKeyboardState
GetKeyboardState
GetKeyState
VkKeyScanW
EnumWindows
EnumChildWindows
MapVirtualKeyW
CloseWindowStation
SetProcessWindowStation
OpenWindowStationW
UnregisterHotKey
keybd_event
InternetCrackUrlW
HttpQueryInfoW
HttpOpenRequestW
HttpSendRequestW
FtpOpenFileW
FtpGetFileSize
InternetOpenUrlW
zcÁ
mscoree.dll
>>>AUTOIT NO CMDEXECUTE<<<
CMDLINERAW
CMDLINE
/AutoIt3ExecuteLine
/AutoIt3ExecuteScript
%s (%d) : ==> %s.:
Line %d:
Line %d (File "%s"):
%s (%d) : ==> %s:
AutoIt script files (*.au3, *.a3x)
*.au3;*.a3x
All files (*.*)
#NoAutoIt3Execute
APPSKEY
04090000
%u.%u.%u.%u
0.0.0.0
Mddddd
%s (%d) : ==> %s:
UDPSTARTUP
UDPSHUTDOWN
UDPSEND
UDPRECV
UDPOPEN
UDPCLOSESOCKET
UDPBIND
TRAYGETMSG
TCPSTARTUP
TCPSHUTDOWN
TCPSEND
TCPRECV
TCPNAMETOIP
TCPLISTEN
TCPCONNECT
TCPCLOSESOCKET
TCPACCEPT
SHELLEXECUTEWAIT
SHELLEXECUTE
REGENUMKEY
MSGBOX
ISKEYWORD
HTTPSETUSERAGENT
HTTPSETPROXY
HOTKEYSET
GUIREGISTERMSG
GUIGETMSG
GUICTRLSENDMSG
GUICTRLRECVMSG
FTPSETPROXY
\??\%s
GUI_RUNDEFMSG
SendKeyDelay
SendKeyDownDelay
TCPTimeout
AUTOITCALLVARIABLE%d
255.255.255.255
Keyword
AutoIt.Error
Null Object assignment in FOR..IN loop
Incorrect Object type in FOR..IN loop
HOTKEYPRESSED
AUTOITEXE
WINDOWSDIR
3, 3, 6, 1
HKEY_LOCAL_MACHINE
HKEY_CLASSES_ROOT
HKEY_CURRENT_CONFIG
HKEY_CURRENT_USER
HKEY_USERS
%d/d/d
c:\%original file name%.exe
:C:\%original file name%.exe
AutoIt supports the __stdcall (WINAPI) and __cdecl calling conventions. The __stdcall (WINAPI) convention is used by default but __cdecl can be used instead. See the DllCall() documentation for details on changing the calling convention.
Missing operator in expression."Unbalanced brackets in expression.
Error parsing function call.0Incorrect number of parameters in function call.'"ReDim" used without an array variable.>Illegal text at the end of statement (one statement per line).1"If" statement has no matching "EndIf" statement.1"Else" statement with no matching "If" statement.2"EndIf" statement with no matching "If" statement.7Too many "Else" statements for matching "If" statement.3"While" statement has no matching "Wend" statement.4"Wend" statement with no matching "While" statement.%Variable used without being declared.XArray variable has incorrect number of subscripts or subscript dimension range exceeded.)Array variable subscript badly formatted.'Subscript used with non-Array variable.&Too many subscripts used for an array.0Missing subscript dimensions in "Dim" statement.NNo variable given for "Dim", "Local", "Global", "Struct" or "Const" statement.0Expected a "=" operator in assignment statement.*Invalid keyword at the start of this line.
Invalid element in a DllStruct.*Unknown option or bad parameter specified.&Unable to load the internet libraries./"Struct" statement has no matching "EndStruct".HUnable to open file, the maximum number of open files has been exceeded.
Invalid file filter given.*Expected a variable in user function call.1"Do" statement has no matching "Until" statement.2"Until" statement with no matching "Do" statement.#"For" statement is badly formatted.2"Next" statement with no matching "For" statement.N"ExitLoop/ContinueLoop" statements only valid from inside a For/Do/While loop.1"For" statement has no matching "Next" statement.@"Case" statement with no matching "Select"or "Switch" statement.:"EndSelect" statement with no matching "Select" statement.ORecursion level has been exceeded - AutoIt will quit to prevent stack overflow.&Cannot make existing variables static.4Cannot make static variables into regular variables.
3This keyword cannot be used after a "Then" keyword.
>"Select" statement is missing "EndSelect" or "Case" statement. "If" statements must have a "Then" keyword. Badly formated Struct statement."Cannot assign values to constants..Cannot make existing variables into constants.9Only Object-type variables allowed in a "With" statement.v"long_ptr", "int_ptr" and "short_ptr" DllCall() types have been deprecated. Use "long*", "int*" and "short*" instead.-Object referenced outside a "With" statement.)Nested "With" statements are not allowed."Variable must be of type "Object".1The requested action with this object has failed.8Variable appears more than once in function declaration.2ReDim array can not be initialized in this manner.1An array variable can not be used in this manner.
HCan pass constants by reference only to parameters with "Const" keyword.*Can not initialize a variable with itself.$Incorrect way to use this parameter.:"EndSwitch" statement with no matching "Switch" statement.>"Switch" statement is missing "EndSwitch" or "Case" statement.H"ContinueCase" statement with no matching "Select"or "Switch" statement.
String missing closing quote.!Badly formated variable or macro.*Missing separator character after keyword.


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:392

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

    %WinDir%\okiloveme.exe (7547 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\autB3.tmp (3097 bytes)
    %Documents and Settings%\%current user%\Start Menu\Programs\Startup\ .exe (1425 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\grybinp (784 bytes)
    C:\New Folder (2).exe (45282 bytes)
    %WinDir%\YahooMessenger.exe (7547 bytes)
    %System%\drivers\etc\hosts (77509 bytes)
    C:\okiloveme.exe (45282 bytes)
    C:\autorun.inf (984 bytes)
    C:\New Folder.exe (45282 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\autB2.tmp (2 bytes)
    %WinDir%\autorun.inf (317 bytes)
    %WinDir%\killer.exe (7547 bytes)

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

    [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
    "Runonce" = "%WinDir%\okiloveme.exe"

  5. Remove the references to the Worm by modifying the following registry value(s) (How to Work with System Registry):

    [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
    "Shell" = "explorer.exe, killer.exe"

  6. Restore the original content of the HOSTS file (%System%\drivers\etc\hosts):
    127.0.0.1 localhost
  7. Reboot the computer.

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