Gen.Variant.Strictor.102159_0bffd578eb

by malwarelabrobot on April 20th, 2016 in Malware Descriptions.

Gen:Variant.Strictor.102159 (B) (Emsisoft), Gen:Variant.Strictor.102159 (AdAware), Worm.Win32.AutoIt.FD, WormAutoItGen.YR (Lavasoft MAS)
Behaviour: 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: 0bffd578eb4e1b58f2e2637fd6898bf3
SHA1: c29dfa5b399948e815dfd78a3b4859a2d43af53a
SHA256: e0d6d8b3f97a4d82731a0829a3b75b35d22a8d9cc9abc2a8d4be9cc5318d4f4a
SSDeep: 12288:YDIhGkUWuUb0fBK/Q8RzZ6OPZhJxFx2aDWrnc8MFMRI/SAVWlgaQ16H3:YUhGkTPbXZNFxfDWjMGRtAjaQ16H3
Size: 1193752 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2016-04-10 22:48:14
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:1832

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

Mutexes

The following mutexes were created/opened:

ShimCacheMutex

File activity

The process %original file name%.exe:1832 makes changes in the file system.
The Worm creates and/or writes to the following file(s):

%System%\drivers\etc\hosts (308 bytes)

Registry activity

The process %original file name%.exe:1832 makes changes in the system registry.
The Worm creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F9 1B D6 29 AA C8 D4 A6 53 E9 5C 38 13 69 57 A9"

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

Dropped PE files

There are no dropped PE files.

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 1062 bytes in size. The following strings are added to the hosts file listed below:

37.252.249.4 server20901.teamviewer.com
37.252.249.4 server20902.teamviewer.com
37.252.249.4 server20903.teamviewer.com
37.252.249.4 server20904.teamviewer.com
37.252.249.4 server20905.teamviewer.com
37.252.249.4 server20906.teamviewer.com
37.252.249.4 server20907.teamviewer.com
37.252.249.4 server20908.teamviewer.com


Rootkit activity

No anomalies have been detected.

Propagation

VersionInfo

Company Name: AV MEDIA N
Product Name: FIX TEAMVIE
Product Version: 1.0.0.
Legal Copyright: 201
Legal Trademarks:
Original Filename: Fix Teamview.ex
Internal Name: Fix Teamview.ex
File Version: 1.0.0.
File Description: FIX TEAMVIE
Comments:
Language: Language Neutral

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
.text 4096 576285 576512 4.62933 3579b820e63ecae919536fa27ee73bb5
.rdata 581632 182162 182272 4.00652 2bb0ef0b2885465d7d4d69f5d4d948c6
.data 765952 40756 25088 1.38944 20fe1a758168536b32c2bcffa42f356f
.rsrc 806912 366637 367104 1.46554 4af14bc6122650c204afdc7ded5c7463
.reloc 1175552 41262 41472 3.60712 39aef1957523df127ec0c77be9b9dc1d

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_1832:

.text
`.rdata
@.data
.rsrc
@.reloc
PSSSSSSh
Gt.Ht$
PSSSh@
PVSSh@
f;Crt
?#%X.y
GetProcessWindowStation
operator
kernel32.dll
oleaut32.dll
RegDeleteKeyExW
advapi32.dll
Error text not found (please report)
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 compiled without UTF support
PCRE does not support \L, \l, \N{name}, \U, or \u
support for \P, \p, and \X has not been compiled
this version of PCRE is not compiled with Unicode property support
\N is not supported in a class
WSOCK32.dll
VERSION.dll
WINMM.dll
COMCTL32.dll
MPR.dll
InternetCrackUrlW
HttpQueryInfoW
HttpOpenRequestW
HttpSendRequestW
FtpOpenFileW
FtpGetFileSize
InternetOpenUrlW
WININET.dll
PSAPI.DLL
IPHLPAPI.DLL
USERENV.dll
UxTheme.dll
GetProcessHeap
CreatePipe
GetWindowsDirectoryW
KERNEL32.dll
OpenWindowStationW
SetProcessWindowStation
CloseWindowStation
MapVirtualKeyW
EnumChildWindows
EnumWindows
VkKeyScanW
GetKeyState
GetKeyboardState
SetKeyboardState
GetAsyncKeyState
keybd_event
EnumThreadWindows
ExitWindowsEx
UnregisterHotKey
RegisterHotKey
GetKeyboardLayoutNameW
USER32.dll
SetViewportOrgEx
GDI32.dll
COMDLG32.dll
RegOpenKeyExW
RegCloseKey
RegCreateKeyExW
RegEnumKeyExW
RegDeleteKeyW
ADVAPI32.dll
ShellExecuteW
SHFileOperationW
ShellExecuteExW
SHELL32.dll
ole32.dll
OLEAUT32.dll
GetCPInfo
zcÁ
/7|N.sy5
![%u[
I%UUUUUUUUUUU
CC.PG
k.rfF
<assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls" version="6.0.0.0" language="*" processorArchitecture="*" publicKeyToken="6595b64144ccf1df"/>
<requestedExecutionLevel level="requireAdministrator" uiAccess="false"/>
<supportedOS Id="{e2011457-1546-43c5-a5fe-008deee3d3f0}"/>
<supportedOS Id="{35138b9a-5d96-4fbd-8e2d-a2440225f93a}"/>
<supportedOS Id="{4a2f28e3-53b9-4441-ba9c-d69d4a4a6e38}"/>
<supportedOS Id="{1f676c76-80e1-4239-95bb-83d0f6d0da78}"/>
0 0$0(0,00040
;#<5<[<~<
:.;4;8;<;@;
848:8?8]8
mscoree.dll
combase.dll
- CRT not initialized
- Attempt to initialize the CRT more than once.
- floating point support not loaded
USER32.DLL
>>>AUTOIT NO CMDEXECUTE<<<
CMDLINERAW
CMDLINE
3executeL
3ExecuteLin
/AutoIt3ExecuteScript
APPSKEY
789:;<=>?
FTPSETPROXY
GUICTRLRECVMSG
GUICTRLSENDMSG
GUIGETMSG
GUIREGISTERMSG
HOTKEYSET
HTTPSETPROXY
HTTPSETUSERAGENT
ISKEYWORD
MSGBOX
REGENUMKEY
SHELLEXECUTE
SHELLEXECUTEWAIT
TCPACCEPT
TCPCLOSESOCKET
TCPCONNECT
TCPLISTEN
TCPNAMETOIP
TCPRECV
TCPSEND
TCPSHUTDOWN
TCPSTARTUP
TRAYGETMSG
UDPBIND
UDPCLOSESOCKET
UDPOPEN
UDPRECV
UDPSEND
UDPSHUTDOWN
UDPSTARTUP
SendKeyDelay
SendKeyDownDelay
TCPTimeout
WINDOWSDIR
AUTOITEXE
HOTKEYPRESSED
D%s (%d) : ==> %s.:
Line %d:
Line %d (File "%s"):
%s (%d) : ==> %s:
AutoIt script files (*.au3, *.a3x)
*.au3;*.a3x
All files (*.*)
04090000
%u.%u.%u.%u
0.0.0.0
Mddddd
"%s" (%d) : ==> %s:
\??\%s
GUI_RUNDEFMSG
AUTOITCALLVARIABLE%d
255.255.255.255
Keyword
AUTOIT.ERROR
Null Object assignment in FOR..IN loop
Incorrect Object type in FOR..IN loop
3, 3, 9, 22
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.#Variable subscript badly formatted.*Subscript used on non-accessible 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.K"ContinueLoop" statement with no matching "While", "Do" or "For" statement.
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.
Can not redeclare a constant.5Can not redeclare a parameter inside a user function.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.
1.0.0.1
Fix Teamview.exe


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:1832

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

    %System%\drivers\etc\hosts (308 bytes)

  4. Restore the original content of the HOSTS file (%System%\drivers\etc\hosts):
    127.0.0.1 localhost

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

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