Backdoor.Win32.Caphaw_QKKBAL_a01fbf74e2 – Adaware

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Backdoor creates the following process(es):

hivai.exe:1472
%original file name%.exe:1368

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

Explorer.EXE:1572

File activity

The process %original file name%.exe:1368 makes changes in the file system.

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

%Documents and Settings%\%current user%\Local Settings\Temp\tmp996de2de.bat (177 bytes)
%Documents and Settings%\%current user%\Application Data\Seizu\hivai.exe (186 bytes)

Registry activity

The process hivai.exe:1472 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "98 8C 04 F2 97 7F 25 C3 C8 2A DC F1 41 5D F2 A7"

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

[HKCU\Software\Microsoft\Edeci]
"Upafb" = "A5 8A 9D D3 92 8F 74 DE F8 23 BD EF 83 90 04 E6"

The process %original file name%.exe:1368 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "5C 6E D1 50 2C 24 7D 95 82 39 4D A0 E2 0D D0 A2"

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

[HKCU\Software\Microsoft\Edeci]
"Upafb" = "A5 8A 9D D3 92 8F 74 DE F8 23 BD EF 83 90 04 E6"

Dropped PE files

MD5	File path
88ca87d9cd483ae201cf093f48b8d70d	c:\Documents and Settings\"%CurrentUserName%"\Application Data\Seizu\hivai.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

The Backdoor installs the following user-mode hooks in WININET.dll:

HttpSendRequestExA
HttpSendRequestW
InternetSetStatusCallbackW
InternetReadFileExA
InternetSetStatusCallback
InternetQueryDataAvailable
HttpSendRequestExW
InternetReadFile
HttpQueryInfoA
HttpSendRequestA
InternetCloseHandle
InternetSetOptionA

The Backdoor installs the following user-mode hooks in CRYPT32.dll:

PFXImportCertStore

The Backdoor installs the following user-mode hooks in USER32.dll:

SetCursorPos
DefMDIChildProcA
DefFrameProcA
DefDlgProcA
GetClipboardData
DefMDIChildProcW
DefFrameProcW
GetUpdateRgn
RegisterClassA
GetDCEx
ReleaseCapture
SetCapture
DefWindowProcA
CallWindowProcA
GetUpdateRect
PeekMessageA
CallWindowProcW
GetMessagePos
GetCursorPos
EndPaint
BeginPaint
DefWindowProcW
RegisterClassExA
GetMessageA
DefDlgProcW
SwitchDesktop
OpenInputDesktop
RegisterClassExW
RegisterClassW
GetCapture
PeekMessageW
GetMessageW
GetWindowDC
TranslateMessage
GetDC
ReleaseDC

The Backdoor installs the following user-mode hooks in WS2_32.dll:

WSASend
recv
WSARecv
send
closesocket

The Backdoor installs the following user-mode hooks in kernel32.dll:

GetFileAttributesExW

The Backdoor installs the following user-mode hooks in ntdll.dll:

LdrLoadDll
NtCreateThread

Propagation

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*

Scan a system with an anti-rootkit tool.
Terminate malicious process(es) (How to End a Process With the Task Manager):
hivai.exe:1472
%original file name%.exe:1368
Delete the original Backdoor file.
Delete or disinfect the following files created/modified by the Backdoor:
%Documents and Settings%\%current user%\Local Settings\Temp\tmp996de2de.bat (177 bytes)
%Documents and Settings%\%current user%\Application Data\Seizu\hivai.exe (186 bytes)
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: Mozilla Foundation
Product Name: Network Security Services
Product Version: 3.12.9.0 Basic ECC
Legal Copyright:
Legal Trademarks:
Original Filename: nssdbm3.dll
Internal Name: nssdbm3
File Version: 3.12.9.0 Basic ECC
File Description: Legacy Database Driver
Comments:
Language: English (United States)

Company Name: Mozilla FoundationProduct Name: Network Security ServicesProduct Version: 3.12.9.0 Basic ECCLegal Copyright: Legal Trademarks: Original Filename: nssdbm3.dllInternal Name: nssdbm3File Version: 3.12.9.0 Basic ECCFile Description: Legacy Database DriverComments: Language: English (United States)

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
UPX0	4096	17330176	0	0	d41d8cd98f00b204e9800998ecf8427e
UPX1	17334272	184320	181760	5.44509	6d4bc7c84c2df7b15929af9b26ef4380
.rsrc	17518592	4096	3584	2.97526	0063fcddfa2b8d88f6ee22f393513b9f

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

URL	IP
hxxp://www.google.com/webhp
hxxp://www.google.com/webhp?gfe_rd=cr&ei=tIiJU6atFcvm9AbUpoHgBw
hxxp://upmguspdgpmrui.org/news/?s=21920	82.165.37.26
hxxp://www.google.com.ua/webhp?gfe_rd=cr&ei=tIiJU6atFcvm9AbUpoHgBw

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

GET /webhp HTTP/1.1

Accept: */*

Connection: Close

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

Cache-Control: no-cache

HTTP/1.1 302 Found

Cache-Control: private

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

Location: hXXp://VVV.google.com.ua/webhp?gfe_rd=cr&ei=tIiJU6atFcvm9AbUpoHgBw

Content-Length: 267

Date: Sat, 31 May 2014 07:45:56 GMT

Server: GFE/2.0

Alternate-Protocol: 80:quic

Connection: close

<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/webhp?gfe_rd=cr&ei=tIiJU6atFcvm9AbUpoHgBw">here</A>...</BODY></HTML>....

GET /webhp?gfe_rd=cr&ei=tIiJU6atFcvm9AbUpoHgBw HTTP/1.1

Accept: */*

Connection: Close

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)

Cache-Control: no-cache

Host: VVV.google.com.ua

HTTP/1.1 200 OK

Date: Sat, 31 May 2014 07:45:56 GMT

Expires: -1

Cache-Control: private, max-age=0

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

Set-Cookie: PREF=ID=78a72896167bd39e:FF=0:TM=1401522356:LM=1401522356:S=IJat1FPN3n9MgpiS; expires=Mon, 30-May-2016 07:45:56 GMT; path=/; domain=.google.com.ua

Set-Cookie: NID=67=SqWgaKmGZhn6pUM6NXNYWU4Y-gdP_UmUhNzwhQgHYMTwCus_TzCjab1TehH2uSRSQ39fcOxbrlrnLure_TyLydEqnih8cchp0Z0T7gByWSReBGylCMC3wvGMt-k7Ph2K; expires=Sun, 30-Nov-2014 07:45:56 GMT; path=/; domain=.google.com.ua; HttpOnly

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

Server: gws

X-XSS-Protection: 1; mode=block

X-Frame-Options: SAMEORIGIN

Alternate-Protocol: 80:quic

Connection: close

<!doctype html><html itemscope="" itemtype="hXXp://schema.org/WebPage" lang="uk"><head><meta content="text/html; charset=UTF-8" http-equiv="content-type"><meta content="/images/google_favicon_128.png" itemprop="image"><title>Google</title><script>(function(){.window.google={kEI:"tIiJU5KiNMLlsAS-3ILoBA",getEI:function(a){for(var b;a&&(!a.getAttribute||!(b=a.getAttribute("eid")));)a=a.parentNode;return b||google.kEI},https:function(){return"https:"==window.location.protocol},kEXPI:"4791,17259,4000116,4007606,4007661,4007830,4008142,4009033,4009641,4010806,4010858,4010899,4011228,4011258,4011679,4012373,4012504,4013414,4013591,4013723,4013758,4013787,4013823,4013941,4013967,4013979,4014016,4014093,4014431,4014515,4014636,4014671,4014810,4014813,4014991,4015234,4015260,4015266,4015339,4015550,4015587,4015633,4015772,4016127,4016309,4016367,4016372,4016487,4016824,4016855,4016882,4016933,4016950,4016976,4017063,4017224,4017280,4017285,4017298,4017544,4017566,4017578,4017595,4017597,4017612,4017639,4017681,4017694,4017710,4017742,4017818,4017821,4017823,4017856,4017862,4017913,4017922,4017959,4017963,4017981,4017982,4018009,4018019,4018089,4018130,4018176,4018283,4018363,4018367,4018424,4018480,4018566,4018609,8300012,8300027,8500222,8500252,8500256,8500264,8500272,8500306,8500332,8500357,8500365,8500379,8500389,8500394,8500400,8500413,8500415,10200012,10200029,10200040,10200048,10200053,10200084,10200120,10200134,10200136,10200155,10200160,10200164,10200184,10200211,10

<<

<<< skipped >>>

GET /news/?s=21920 HTTP/1.1

Accept: */*

Connection: Close

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: upmguspdgpmrui.org

Cache-Control: no-cache

HTTP/1.1 404 Not Found

Server: nginx/1.4.7

Date: Sat, 31 May 2014 07:45:57 GMT

Content-Type: text/html

Content-Length: 570

Connection: close

<html>..<head><title>404 Not Found</title></head>..<body bgcolor="white">..<center><h1>404 Not Found</h1></center>..<hr><center>nginx/1.4.7</center>..</body>..</html>................

Map

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

Strings from Dumps

Explorer.EXE_1572_rwx_01EB0000_0002E000:

.text

`.data

.reloc

PR_OpenTCPSocket

-./0123456789

gdiplus.dll

GdiplusShutdown

HTTP/1.1

cabinet.dll

urlmon.dll

#?4)-1%3`*4(

095(2)4>'8.

/214"$#-,:

*7=.*=-;-

8,88##/#`'#5 7/3=*

8%(<;*9"

4547900

17(.3=2;

5E6/1&

&;1"&1!7!

->9!!'#-.'

tM<8sI?2aAo`svdjZNx .p.OyPa%

"?5&"5%3%5

?5$&;"%$;

REPORT

userenv.dll

del "%s"

if exist "%s" goto d

del /F "%s"

!!!!!!""#$%&'(((((())* ,-.IIIIIIII//I01234445656789:;9:;IIIII<=>?@ABCDEF

GetProcessHeap

KERNEL32.dll

SetKeyboardState

OpenWindowStationW

GetProcessWindowStation

CreateWindowStationW

CloseWindowStation

SetProcessWindowStation

MapVirtualKeyW

MsgWaitForMultipleObjects

GetKeyboardState

ExitWindowsEx

USER32.dll

RegOpenKeyExW

RegEnumKeyExW

RegCloseKey

RegCreateKeyExW

CryptImportKey

CryptDestroyKey

ADVAPI32.dll

UrlUnescapeA

SHDeleteKeyW

PathIsURLW

SHLWAPI.dll

ShellExecuteW

SHELL32.dll

Secur32.dll

ole32.dll

SetViewportOrgEx

GDI32.dll

WS2_32.dll

PFXImportCertStore

CertDeleteCertificateFromStore

CertOpenSystemStoreW

CertCloseStore

CertEnumCertificatesInStore

CertDuplicateCertificateContext

PFXExportCertStoreEx

CRYPT32.dll

HttpSendRequestExA

HttpQueryInfoA

HttpSendRequestExW

HttpSendRequestW

HttpSendRequestA

InternetCrackUrlA

GetUrlCacheEntryInfoW

HttpAddRequestHeadersW

HttpAddRequestHeadersA

HttpOpenRequestA

WININET.dll

OLEAUT32.dll

NETAPI32.dll

msvcrt.dll

2"2&2*2.2

2"2.252^2

nspr4.dll

SysShadow

%sx.%s

%sx

e.dat

kernel32.dll

"%s" %s

/c "%s"

%Documents and Settings%\%current user%\Application Data\Tybeel\icjaa.upn

%Documents and Settings%\%current user%\Application Data\Tybeel

icjaa.upn

Global\{08FA9341-34A1-FBB9-18A0-8ECFCFF37061}

%Documents and Settings%\%current user%\Application Data

{9E81216A-868A-6DC2-18A0-8ECFCFF37061}

Summary

Dynamic Analysis

Removals

Static Analysis

Network Activity

Map

Strings from Dumps

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