Trojan-PSW.Win32.Zbot_1ee34c2406

by malwarelabrobot on May 5th, 2014 in Malware Descriptions.

Trojan.Win32.Buzus.onfb (Kaspersky), Trojan.GenericKD.1660008 (AdAware), Trojan-PSW.Win32.Zbot.6.FD, GenericInjector.YR, BackdoorCaphaw_QKKBAL.YR, TrojanPSWZbot.YR (Lavasoft MAS)
Behaviour: Trojan-PSW, Trojan, Backdoor


The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

Summary
Dynamic Analysis
Static Analysis
Network Activity
Map
Strings from Dumps
Removals

MD5: 1ee34c240696ca9b8e9049d82670be39
SHA1: 742eabdb1e2b56e673b53ba416b572f9c925f059
SHA256: 5b2fc18e71198bc0df219fd13dd88aa84d0618b276cd5b11cc14e15e7cc99a3d
SSDeep: 24576:9RmJkcoQricOIQxiZY1ia5XFCUXxMFfiLvVYe0KhYT3wOH3F:yJZoQrbTFZY1ia5XFCG4q9Ye0P3Z
Size: 1300069 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: QuickSet
Created at: 2012-01-29 23:32:28
Analyzed on: WindowsXP SP3 32-bit


Summary:

Trojan-PSW. Trojan program intended for stealing users passwords.

Payload

No specific payload has been found.

Process activity

The Trojan-PSW creates the following process(es):

owny.exe:1536
owny.exe:1124
%original file name%.exe:1804
%original file name%.exe:1296

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

Explorer.EXE:1284

File activity

The process %original file name%.exe:1296 makes changes in the file system.
The Trojan-PSW creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\Yfuw\owny.exe (7386 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmpc33d9458.bat (177 bytes)

Registry activity

The process owny.exe:1536 makes changes in the system registry.
The Trojan-PSW creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "CB 1A BD DD E6 24 05 53 53 46 4C F2 52 82 E2 BB"

[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"

The process owny.exe:1124 makes changes in the system registry.
The Trojan-PSW creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "16 2B 1B 1D DB 65 EA ED B9 48 BC BE DF 49 26 E8"

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

The process %original file name%.exe:1804 makes changes in the system registry.
The Trojan-PSW creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "23 A1 60 FE D6 2B 0A 2A 57 9A 30 3E 95 86 7D C5"

[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"

The process %original file name%.exe:1296 makes changes in the system registry.
The Trojan-PSW creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "43 69 CE 76 F3 F9 1F D7 CD 78 89 23 DE 7D 0C 65"

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

Dropped PE files

MD5 File path
a31330a08021c12a20cd6551854ad2e0 c:\Documents and Settings\"%CurrentUserName%"\Application Data\Yfuw\owny.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

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

HttpSendRequestExA
HttpSendRequestW
InternetReadFileExA
InternetQueryDataAvailable
HttpSendRequestExW
InternetReadFile
HttpQueryInfoA
HttpSendRequestA
InternetCloseHandle

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

PFXImportCertStore

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

WSASend
send
closesocket

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

GetFileAttributesExW

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

LdrLoadDll
NtCreateThread

Propagation

VersionInfo

Company Name:
Product Name:
Product Version:
Legal Copyright:
Legal Trademarks:
Original Filename:
Internal Name:
File Version: 3, 3, 8, 1
File Description:
Comments:
Language: Language Neutral

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
.text 4096 525852 526336 4.63347 61ffce4768976fa0dd2a8f6a97b1417a
.rdata 532480 57280 57344 3.32693 0354bc5f2376b5e9a4a3ba38b682dff1
.data 589824 108376 26624 1.49032 8033f5a38941b4685bc2299e78f31221
.rsrc 700416 198624 198656 4.78043 374b7109a16ac7f59e108ddacbe16766

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

URLs

URL IP
hxxp://www.google.com/webhp 74.125.226.243
hxxp://www.google.ca/webhp?gfe_rd=cr&ei=LgFmU9buJonO8gfP54CgBA 74.125.226.248
hxxp://204.188.238.143/follow/metro/admin/1/secure.php


IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

ET TROJAN Zeus Bot GET to Google checking Internet connectivity

Traffic

GET /webhp?gfe_rd=cr&ei=LgFmU9buJonO8gfP54CgBA 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.ca


HTTP/1.1 200 OK
Date: Sun, 04 May 2014 08:58:22 GMT
Expires: -1
Cache-Control: private, max-age=0
Content-Type: text/html; charset=UTF-8
Set-Cookie: PREF=ID=db6012491f6db4a9:FF=0:TM=1399193902:LM=1399193902:S=_2sYRl7icS3lY1RQ; expires=Tue, 03-May-2016 08:58:22 GMT; path=/; domain=.google.ca
Set-Cookie: NID=67=uaB9EUg4GBuRMwJBZdi1Q06zejHSJ2P3y_MEK8xZah8dpl0i9n_vMq58y5TjctpUBe4gZP0Wk_ZD6XermJdvnNtEFBoHPYw3WBzQnBLziFs0jc51xqeXqLXgUIQCLc2j; expires=Mon, 03-Nov-2014 08:58:22 GMT; path=/; domain=.google.ca; 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="en-CA"><head><meta content="text/html; cha
rset=UTF-8" http-equiv="content-type"><meta content="/images/goo
gle_favicon_128.png" itemprop="image"><title>Google</title
><script>(function(){.window.google={kEI:"LgFmU_b-K6ngsASE8oC
YDw",getEI:function(a){for(var b;a&&(!a.getAttribute||!(b=a.getAttribu
te("eid")));)a=a.parentNode;return b||google.kEI},https:function(){ret
urn"https:"==window.location.protocol},kEXPI:"25657,4000116,4007661,40
07830,4008142,4009033,4009641,4010806,4010858,4010899,4011228,4011258,
4011679,4012373,4012504,4012508,4012860,4013374,4013414,4013591,401372
3,4013758,4013787,4013823,4013941,4013967,4013979,4014016,4014093,4014
431,4014515,4014636,4014671,4014789,4014810,4014813,4014991,4015119,40
15155,4015234,4015260,4015519,4015550,4015587,4015635,4015638,4015639,
4015772,4016005,4016090,4016096,4016127,4016309,4016363,4016367,401637
3,4016391,4016452,4016466,4016487,4016638,4016703,4016730,4016786,4016
800,4016815,4016824,4016855,4016933,4016978,4017042,4017055,4017206,40
17280,4017284,4017294,4017336,4017556,4017590,4017639,4017643,4017706,
4017710,8300015,8300017,8500165,8500222,8500240,8500252,8500264,850030
6,8500314,8500323,8500332,8500364,10200002,10200012,10200029,10200038,
10200040,10200048,10200053,10200055,10200066,10200083,10200120,1020013
4,10200136,10200155,10200157,10200159,10200164,10200176,10200211,10200
215,10200221,10200224,10200226,10200228,10200231,10200236,10200242

<<< skipped >>>

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.ca/webhp?gfe_rd=cr&ei=LgFmU9buJonO8gfP54CgBA
Content-Length: 263
Date: Sun, 04 May 2014 08:58:22 GMT
Server: GFE/2.0
Alternate-Protocol: 80:quic
Connection: close
<HTML><HEAD><meta http-equiv="content-type" content="te
xt/html;charset=utf-8">.<TITLE>302 Moved</TITLE></HE
AD><BODY>.<H1>302 Moved</H1>.The document has mov
ed.<A HREF="hXXp://VVV.google.ca/webhp?gfe_rd=cr&ei=LgFmU9buJon
O8gfP54CgBA">here</A>...</BODY></HTML>....


POST /follow/metro/admin/1/secure.php HTTP/1.1
Accept: */*
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: salesadvert.com
Content-Length: 262
Connection: Keep-Alive
Cache-Control: no-cache

.......D#Yh............p.}C./O..p...h.q...D
.....b..>TQ.._.....l.7fJ.@ q..VE..........wx...\......*..(_8........r.9..Y>...3,w3.....y...K.r.........O.;W1z:..aC.....Z.f5.j...e7.?.O..z...Sbs1...Y....l..4-M...r..Xt....]x6.....I.V`o='.YC...... ...g.D.~....A..\U..h.EU
HTTP/1.1 200 OK
Server: nginx/1.4.2
Date: Sun, 04 May 2014 08:58:49 GMT
Content-Type: text/html
Transfer-Encoding: chunked
Connection: keep-alive
X-Powered-By: PHP/5.2.17
40...xw..g|..0(. Z.l.x..`.0.......r..U.............To.GU...zW.Z...P...
0..
....


Explorer.EXE_1284_rwx_00A70000_00027000:

.text
`.data
.reloc
PR_OpenTCPSocket
http://www.google.com/webhp
gdiplus.dll
GdiplusShutdown
ole32.dll
gdi32.dll
<;.8("9`%,/
,127!' ./9
5/ -?9/#$
./.-#**:
6 !26!1'1
7"52),,>
, >(3=2;
<7!="?):
&;1"&1!7!1
;1 "?&! ?
c,%udcvpdxv ~iydjGBT\YGmTRL[ZMI_
7.>.3; `
1:,0/2$7
?$6 39 ~
HTTP/1.1
http://
https://
HTTP/1.
userenv.dll
del "%s"
if exist "%s" goto d
del /F "%s"
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; SV1)
urlmon.dll
cabinet.dll
SSShlD
GetProcessHeap
KERNEL32.dll
ExitWindowsEx
OpenWindowStationW
GetProcessWindowStation
CreateWindowStationW
CloseWindowStation
SetProcessWindowStation
GetKeyboardState
MapVirtualKeyW
SetKeyboardState
MsgWaitForMultipleObjects
USER32.dll
RegOpenKeyExW
RegEnumKeyExW
RegCloseKey
RegCreateKeyExW
ADVAPI32.dll
PathIsURLW
UrlUnescapeA
SHDeleteKeyW
SHLWAPI.dll
ShellExecuteW
SHELL32.dll
Secur32.dll
SetViewportOrgEx
GDI32.dll
WS2_32.dll
PFXImportCertStore
CertDeleteCertificateFromStore
CertOpenSystemStoreW
CertCloseStore
CertEnumCertificatesInStore
CertDuplicateCertificateContext
PFXExportCertStoreEx
CRYPT32.dll
HttpSendRequestExA
HttpQueryInfoA
HttpSendRequestExW
HttpSendRequestW
HttpSendRequestA
GetUrlCacheEntryInfoW
HttpAddRequestHeadersW
HttpAddRequestHeadersA
InternetCrackUrlA
HttpOpenRequestA
WININET.dll
OLEAUT32.dll
NETAPI32.dll
G'%d#a
>">->3>?>
5S5C5N5Z5
nspr4.dll
cGlobal\XXX
SysShadow
e.dat
kernel32.dll
"%s" %s
/c "%s"
%sx.%s
%sx
%Documents and Settings%\%current user%\Application Data\Ahbez\wyehe.uwr
%Documents and Settings%\%current user%\Application Data\Ahbez
wyehe.uwr
Global\{09A9BAE5-9F8D-3BBC-1572-5B360B7E8651}
%Documents and Settings%\%current user%\Application Data
{9FD208C0-2DA8-ADC7-1572-5B360B7E8651}


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. Scan a system with an anti-rootkit tool.
  2. Terminate malicious process(es) (How to End a Process With the Task Manager):

    owny.exe:1536
    owny.exe:1124
    %original file name%.exe:1804
    %original file name%.exe:1296

  3. Delete the original Trojan-PSW file.
  4. Delete or disinfect the following files created/modified by the Trojan-PSW:

    %Documents and Settings%\%current user%\Application Data\Yfuw\owny.exe (7386 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\tmpc33d9458.bat (177 bytes)

  5. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
  6. Reboot the computer.

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

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