Worm.Win32.Rebhip_9622c62102 – Adaware

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 Worm's file once a user opens a drive's folder in Windows Explorer.

Process activity

The Worm creates the following process(es):

%original file name%.exe:1352
%original file name%.exe:1196

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

iexplore.exe:500

Mutexes

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

File activity

The process %original file name%.exe:1352 makes changes in the file system.

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

%System%\Fonts\ctfmon.exe (11518 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\XX--XX--XX.txt (235 bytes)

Registry activity

The process %original file name%.exe:1352 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "69 DC B5 F1 8F F4 87 23 CF 46 86 89 3D 8F E3 F3"

[HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{64645VEO-W5UN-4N2U-QACC-F2PFAF15EWL4}]
"StubPath" = "%System%\Fonts\ctfmon.exe Restart"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run]
"ctfmon" = "%System%\Fonts\ctfmon.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run]
"ctfmon" = "%System%\Fonts\ctfmon.exe"

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]
"HKCU" = "%System%\Fonts\ctfmon.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"HKLM" = "%System%\Fonts\ctfmon.exe"

The process %original file name%.exe:1196 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "2A 9D 19 24 49 A4 D1 55 EF 6D EF 9C E5 6F 75 E8"

[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]
"History" = "%Documents and Settings%\%current user%\Local Settings\History"
"My Pictures" = "%Documents and Settings%\%current user%\My Documents\My Pictures"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"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\{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"
"Personal" = "%Documents and Settings%\%current user%\My Documents"

Dropped PE files

There are no dropped PE files.

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 Worm's file once a user opens a drive's folder in Windows Explorer.

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):
%original file name%.exe:1352
%original file name%.exe:1196
Delete the original Worm file.
Delete or disinfect the following files created/modified by the Worm:
%System%\Fonts\ctfmon.exe (11518 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\XX--XX--XX.txt (235 bytes)
Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"HKCU" = "%System%\Fonts\ctfmon.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"HKLM" = "%System%\Fonts\ctfmon.exe"
Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
Reboot the computer.

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

Static Analysis

VersionInfo

No information is available.

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
	4096	417792	217600	5.54455	57b8f0834fbb2f45bf37e4ae38ae5d3c
	421888	61440	15360	5.52815	c806edb0e9df2c136e206687e14adf3a
	483328	94208	3584	5.14982	9512cbe4d0ad688ab9aa79384b5164e6
	577536	303104	1024	4.01	032f7e88a8f758c9706016853902783f
.rsrc	880640	303104	299520	4.85621	43ead1f0146039289e896821f4405299
	1183744	3543040	0	0	d41d8cd98f00b204e9800998ecf8427e
.data	4726784	716800	716800	5.53626	a957086c015c27bf768ce832fd8f1d5f

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Total found: 5
ce61188fbe8c55157a0cd7325f2aeb91
8062b258bb0bc7aa73cc53a0847c10cc
2b2d0e6938bf4d333251ea4eb699d988
8f7471bb3352ebfff8dbd1410ca63ad4
a7e92635f90e5c72e402f36f7cd09058

Network Activity

URLs

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

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

Strings from Dumps

iexplore.exe_500:

%?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

iexplore.exe_500_rwx_00150000_00001000:

KERNEL32.DLL

iexplore.exe_500_rwx_00290000_00001000:

KERNEL32.DLL

iexplore.exe_500_rwx_002D0000_00001000:

KERNEL32.DLL

iexplore.exe_500_rwx_00310000_00001000:

KERNEL32.DLL

iexplore.exe_500_rwx_00350000_00001000:

KERNEL32.DLL

iexplore.exe_500_rwx_00390000_00001000:

KERNEL32.DLL

iexplore.exe_500_rwx_00C40000_00001000:

advapi32.dll

iexplore.exe_500_rwx_00D70000_00001000:

RegOpenKeyA

iexplore.exe_500_rwx_00D80000_00001000:

advapi32.dll

iexplore.exe_500_rwx_00DB0000_00001000:

AVICAP32.DLL

iexplore.exe_500_rwx_00EF0000_00001000:

AVICAP32.DLL

iexplore.exe_500_rwx_00F20000_00001000:

gdi32.dll

iexplore.exe_500_rwx_00F60000_00001000:

gdi32.dll

iexplore.exe_500_rwx_00F90000_00001000:

gdiplus.dll

iexplore.exe_500_rwx_00FD0000_00001000:

gdiplus.dll

iexplore.exe_500_rwx_01010000_00001000:

mpr.dll

iexplore.exe_500_rwx_01060000_00001000:

mpr.dll

iexplore.exe_500_rwx_01090000_00001000:

msacm32.dll

iexplore.exe_500_rwx_014E0000_00001000:

msacm32.dll

iexplore.exe_500_rwx_01510000_00001000:

ntdll.dll

iexplore.exe_500_rwx_01650000_00001000:

ntdll.dll

iexplore.exe_500_rwx_01680000_00001000:

ole32.dll

iexplore.exe_500_rwx_017C0000_00001000:

ole32.dll

iexplore.exe_500_rwx_017F0000_00001000:

oleaut32.dll

iexplore.exe_500_rwx_01830000_00001000:

oleaut32.dll

iexplore.exe_500_rwx_01970000_00001000:

powrprof.dll

iexplore.exe_500_rwx_01AB0000_00001000:

powrprof.dll

iexplore.exe_500_rwx_01AE0000_00001000:

shell32.dll

iexplore.exe_500_rwx_01C20000_00001000:

shell32.dll

iexplore.exe_500_rwx_01C50000_00001000:

user32.dll

iexplore.exe_500_rwx_01D90000_00001000:

user32.dll

iexplore.exe_500_rwx_01DC0000_00001000:

wininet.dll

iexplore.exe_500_rwx_01EF0000_00001000:

FtpOpenFileA

iexplore.exe_500_rwx_01F00000_00001000:

wininet.dll

iexplore.exe_500_rwx_01F30000_00001000:

winmm.dll

iexplore.exe_500_rwx_02070000_00001000:

winmm.dll

iexplore.exe_500_rwx_020A0000_00001000:

wsock32.dll

iexplore.exe_500_rwx_021E0000_00001000:

wsock32.dll

iexplore.exe_500_rwx_24010000_00062000:

`.rsrc

/w)f%u/

kernel32.dll

SHFileOperationA

shell32.dll

URLDownloadToFileA

urlmon.dll

ShellExecuteA

SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders

GetWindowsDirectoryA

SOFTWARE\Microsoft\Windows\CurrentVersion

http\shell\open\command

\Internet Explorer\iexplore.exe

####@####

$*@@@*$@@@$ *@@* $@@($*)@-$*@@$-*@@$*-@@(*$)@-*$@@*-$@@*$-@@-* $@-$ *@* $-@$ *-@$ -*@*- $@($ *)(* $)

Portugal

Turkey

Windows 3.1

Windows 95 (Release 2)

Windows 95

Windows 98 SE

Windows 98

Windows ME

Windows 7

Windows Vista

%s %s

Windows XP Professional x64

Windows XP Home

Windows XP Professional

Windows 2000 Professional

Windows NT %d.%d

Windows 2008

%s %s Server

Windows 2003 Server Datacenter

Windows 2003 Server Enterprise

Windows 2003 Server Web Edition

Windows 2003 Server

Windows Home Server

Windows 2003 Server (Release 2)

Windows 2000 Server Datacenter

Windows 2000 Server Enterprise

Windows 2000 Server Web Edition

Windows 2000 Server

Windows NT 4.0 Server Datacenter

Windows NT 4.0 Server Enterprise

Windows NT 4.0 Server Web Edition

Windows NT 4.0 Server

Unknown Platform ID (%d)

%d.%d

%s (Build: %d

- Service Pack: %s

KERNEL32.DLL

teste.vbs

teste.txt

Set objSecurityCenter = GetObject("winmgmts:\\.\root\SecurityCenter")

Set colFirewall = objSecurityCenter.ExecQuery("Select * From FirewallProduct",,48)

Set colAntiVirus = objSecurityCenter.ExecQuery("Select * From AntiVirusProduct",,48)

Set objFileSystem = CreateObject("Scripting.fileSystemObject")

Set objFile = objFileSystem.CreateTextFile("

Info = Info & "F" & CountFw & ") " & objFirewall.displayName & " v" & objFirewall.versionNumber & Enter

Info = Info & "A" & CountAV & ") " & objAntiVirus.displayName & " v" & objAntiVirus.versionNumber & Enter

objFile.WriteLine(Info)

objFile.Close

cscript.exe

AVICAP32.dll

tFtpAccess

BuildImportTable: can't load library:

BuildImportTable: ReallocMemory failed

BuildImportTable: GetProcAddress failed

BTMemoryLoadLibary: BuildImportTable failed

BTMemoryGetProcAddress: no export table found

BTMemoryGetProcAddress: DLL doesn't export anything

BTMemoryGetProcAddress: exported symbol not found

SetupApi.dll

SetupDiOpenClassRegKey

SetupDiOpenClassRegKeyExA

SetupDiOpenClassRegKeyExW

SetupDiCreateDeviceInterfaceRegKeyA

SetupDiCreateDeviceInterfaceRegKeyW

SetupDiOpenDeviceInterfaceRegKey

SetupDiDeleteDeviceInterfaceRegKey

SetupDiCreateDevRegKeyA

SetupDiCreateDevRegKeyW

SetupDiOpenDevRegKey

SetupDiDeleteDevRegKey

CM_DEVCAP_LOCKSUPPORTED

CM_DEVCAP_EJECTSUPPORTED

PDCAP_D0_SUPPORTED

PDCAP_D1_SUPPORTED

PDCAP_D2_SUPPORTED

PDCAP_D3_SUPPORTED

PDCAP_WAKE_FROM_D0_SUPPORTED

PDCAP_WAKE_FROM_D1_SUPPORTED

PDCAP_WAKE_FROM_D2_SUPPORTED

PDCAP_WAKE_FROM_D3_SUPPORTED

PDCAP_WARM_EJECT_SUPPORTED

HKEY_CLASSES_ROOT

HKEY_CURRENT_CONFIG

HKEY_CURRENT_USER

HKEY_LOCAL_MACHINE

HKEY_USERS

127.0.0.1

iphlpapi.dll

AllocateAndGetTcpExTableFromStack

AllocateAndGetUdpExTableFromStack

SetTcpEntry

GetExtendedTcpTable

GetExtendedUdpTable

Mozilla3_5Password

GetChromePass

StartHttpProxy

1.2.3

XxX.xXx

UuU.uUu

keyboardkey

webcaminactive

webcamgetbuffer

webcam

enviarexecnormal

enviarexechidden

openweb

downexec

sendftp

keylogger

keyloggergetlog

keyloggereraselog

keyloggerativar

keyloggerdesativar

renamekey

windowsfechar

windowsmax

windowsmin

windowsmostrar

windowsocultar

windowsmintodas

windowscaption

listarportas

listarportasdns

finalizarprocessoportas

webcamsettings

chatmsg

SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall\

PSAPI.dll

\config\SteamAppData.vdf

AutoLoginUser

/ClientRegistry.Blob

\ClientRegistry.blob

\steam.dll

%SYS%

ÞSKTOP%

FirstExecution

chatmsg|

Software\Microsoft\Windows\CurrentVersion\Run

Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run

listarjanelas|windowsfechar|

listarjanelas|windowsmax|

listarjanelas|windowsmin|

listarjanelas|windowsmostrar|

listarjanelas|windowsocultar|

listarjanelas|windowsmintodas|

listarjanelas|windowscaption|

HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Uninstall

listarportas|listadeportaspronta|

listarportas|finalizarconexao|

listarportas|finalizarprocessoportas|Y|

listarportas|finalizarprocessoportas|N|

registro|renamekey|

keylogger|keylogger|keyloggerativar|

keylogger|keylogger|keyloggerdesativar|

keylogger|keyloggergetlog|

keylogger|keylogger|keyloggervazio|

keyloggersearch

keyloggersearchok|

webcam|webcaminactive|

webcam|webcamactive|

getpassword

_x_X_PASSWORDLIST_X_x_

NOIP.abc

MSN.abc

FIREFOX.abc

IELOGIN.abc

IEPASS.abc

IEAUTO.abc

IEWEB.abc

SOFTWARE\Mozilla\Mozilla Firefox

getfirefox

getielogin

getiepass

getieweb

getchrome

getpassword|getpasswordlist|

getpassword|getpassworderror|

updateservidorweb

##@@## ##@@## ##@@##

Windows\CurrentVersion\Uninstall\eDonkey2000

UNWISE.EXE

ntdll.dll

icon=shell32.dll,4

shellexecute=

autorun.inf

XX--XX--XX.txt

logs.dat

SQLite3.dll

$1.2.3

KWindows

UnitExecutarComandos

uftp

UrlMon

.UnitBytesSize

UnitListarPortasAtivas

UnitWebcam

UnitKeylogger

WinExec

SetNamedPipeHandleState

GetProcessHeap

CreatePipe

RegOpenKeyExA

RegOpenKeyA

RegEnumKeyExA

RegDeleteKeyA

RegCreateKeyA

RegCloseKey

GdiplusShutdown

keybd_event

MapVirtualKeyA

GetKeyboardState

GetKeyboardLayoutNameA

GetKeyState

GetAsyncKeyState

ExitWindowsEx

EnumWindows

FtpGetFileSize

FtpSetCurrentDirectoryA

FtpOpenFileA

%( % & % % % ]

.idata

.reloc

P.rsrc

advapi32.dll

AVICAP32.DLL

gdi32.dll

gdiplus.dll

mpr.dll

msacm32.dll

ole32.dll

oleaut32.dll

powrprof.dll

user32.dll

wininet.dll

winmm.dll

wsock32.dll

Summary

Dynamic Analysis

Removals

Static Analysis

Network Activity

Map

Strings from Dumps