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TrojanPSW.Win32.Zbot_8dfabaca19


HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.GenericKD.1713590 (B) (Emsisoft), Trojan.GenericKD.1713590 (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

MD5: 8dfabaca19eb7c59df9adb362c794f03

SHA1: 4c0c485a50ee16ee1cf49a362c4b06e7451de979

SHA256: 6867827cdda9a9344b0c5319e2aad028f6f24ca4b21ced064101f006313c864b

SSDeep: 6144:Lyip/FjM qXG06qUB6LER0eUK6qNReDh3t5AeJINpPPji4OjOqTmPuMiIlPOuB:tptojd6vB76qqTKiINcjIuMiIln

Size: 429056 bytes

File type: EXE

Platform: WIN32

Entropy: Packed

PEID: UPolyXv05_v6

Company: no certificate found

Created at: 2014-06-11 13:26:16

Analyzed on: WindowsXP SP3 32-bit

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

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

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

%original file name%.exe:580
tmp.exe:1584
olgyk.exe:1580
.exe:1220

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

Explorer.EXE:1912

File activity

The process %original file name%.exe:580 makes changes in the file system.


The Trojan-PSW creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\tmp.exe (141 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\ .exe (35 bytes)
%System%\drivers\etc\hosts (216 bytes)

The process tmp.exe:1584 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\Myyt\olgyk.exe (141 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmpca131213.bat (213 bytes)

Registry activity

The process %original file name%.exe:580 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 05 0D 6C AC 6B 47 F4 A0 78 44 52 94 61 F0 67"

[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"

[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\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\Local Settings\Temp]
"tmp.exe" = "tmp"

[HKCU\Software\Microsoft\Supen]
"Uxgyun" = "BC D4 10 F5 92 9D 46 0D 84 94 6D EF 94 C0 FC E3"

The Trojan-PSW modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass" = "1"

The Trojan-PSW modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:

"UNCAsIntranet" = "1"

The Trojan-PSW modifies IE settings for security zones to map all urls to the Intranet Zone:

"IntranetName" = "1"

The process tmp.exe:1584 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" = "01 9C F9 63 FF 91 3E CB 7C 05 C5 1C 20 87 5A D2"

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

[HKCU\Software\Microsoft\Supen]
"Uxgyun" = "BC D4 10 F5 92 9D 46 0D 84 94 6D EF 94 C0 FC E3"

The process olgyk.exe:1580 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" = "5B 5C C5 C4 C0 82 51 30 6E 5D 18 BA C6 2F AC C2"

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

The process .exe:1220 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" = "65 42 DB 06 28 CF 01 A8 A7 08 B1 F8 6D 4F 36 60"

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

Dropped PE files

MD5 File path
b324bce5063cf3864dd7fcd538911462c:\Documents and Settings\"%CurrentUserName%"\Application Data\Myyt\olgyk.exe
e0d21bee6dae44a7c6e1896d7a8c7463c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\ .exe

HOSTS file anomalies

The Trojan-PSW modifies "%System%\drivers\etc\hosts" file which is used to translate DNS entries to IP addresses. The modified file is 216 bytes in size. The following strings are added to the hosts file listed below:

127.0.0.1www.website.com
127.0.0.1www.website.com
127.0.0.1www.website.com
127.0.0.1www.website.com
127.0.0.1www.website.com
127.0.0.1www.website.com
127.0.0.1www.website.com
127.0.0.1www.website.com


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

Removals

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):

    %original file name%.exe:580
    tmp.exe:1584
    olgyk.exe:1580
    .exe:1220

  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%\Local Settings\Temp\tmp.exe (141 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\ .exe (35 bytes)
    %System%\drivers\etc\hosts (216 bytes)
    %Documents and Settings%\%current user%\Application Data\Myyt\olgyk.exe (141 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\tmpca131213.bat (213 bytes)

  5. Restore the original content of the HOSTS file (%System%\drivers\etc\hosts): 127.0.0.1 localhost
  6. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
  7. Reboot the computer.
*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

Static Analysis

VersionInfo

Company Name: dongtrading
Product Name: dongtrading
Product Version: 1.0.0.0
Legal Copyright: 673458
Legal Trademarks: dongtrading
Original Filename: force.exe
Internal Name: force.exe
File Version: 1.0
File Description: Order
Comments: Þscription%
Language: English (United States)

Company Name: dongtradingProduct Name: dongtradingProduct Version: 1.0.0.0Legal Copyright: 673458Legal Trademarks: dongtradingOriginal Filename: force.exeInternal Name: force.exeFile Version: 1.0 File Description: OrderComments: Þscription%Language: English (United States)

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
.rsrc8192532056322.9999507d06b40fbd0c9132ab66afb0fe488fe
.text163844222404224005.2583fa541102042d4eaed1b550885b966f23
.reloc442368125120.084755b1bb164046f0c9b70fef2df9d79f4e86

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

URL IP
hxxp://portoautoonline.com.br/pd/config.bin186.202.127.48
hxxp://www.google.com/webhp173.194.39.176
hxxp://www.google.com.ua/webhp?gfe_rd=cr&ei=VDGbU-HHL6Lc8gfcl4DoCA173.194.39.191

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

GET /webhp?gfe_rd=cr&ei=VDGbU-HHL6Lc8gfcl4DoCA 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: Fri, 13 Jun 2014 17:13:57 GMT

Expires: -1

Cache-Control: private, max-age=0

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

Set-Cookie: PREF=ID=bcd2d0accbdb2394:FF=0:TM=1402679637:LM=1402679637:S=9Nx4YceCILsrXMrc; expires=Sun, 12-Jun-2016 17:13:57 GMT; path=/; domain=.google.com.ua

Set-Cookie: NID=67=Acb2_NURorfrhrWHxxMmCdP19H0B23RUoN54OVQHs7oW36SUvfgrxCDON51av0kpCuXrFV4KmoaTJEjFKPA1WYNKceGjXuIMw-PLg4CcBFeuu5LHqnNTRq2oN9zbO5-V; expires=Sat, 13-Dec-2014 17:13:57 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:"VTGbU_y1OqnpywO2oYD4DA",getEI:function(a){for(var c;a&&(!a.getAttribute||!(c=a.getAttribute("eid")));)a=a.parentNode;return c||google.kEI},https:function(){return"https:"==window.location.protocol},kEXPI:"4791,25657,4000116,4007661,4007830,4008142,4009033,4009641,4010806,4010858,4010899,4011228,4011258,4011679,4011960,4012373,4012504,4013414,4013591,4013723,4013758,4013787,4013823,4013967,4013979,4014016,4014093,4014431,4014515,4014636,4014671,4014805,4014810,4014991,4015234,4015260,4015266,4015339,4015550,4015587,4015633,4015772,4015989,4016127,4016292,4016309,4016367,4016373,4016487,4016824,4016855,4016882,4016933,4016976,4017224,4017278,4017280,4017285,4017298,4017544,4017553,4017595,4017612,4017639,4017681,4017694,4017710,4017742,4017818,4017821,4017824,4017857,4017880,4017913,4017922,4017963,4017981,4017982,4018009,4018019,4018030,4018056,4018126,4018154,4018159,4018175,4018180,4018283,4018363,4018416,4018424,4018480,4018519,4018542,4018554,4018566,4018569,4018597,4018610,4018619,4018621,4018638,4018757,4018923,4018935,4019142,8300012,8300027,8500223,8500252,8500256,8500272,8500306,8500325,8500332,8500357,8500365,8500379,8500393,8500400,8500421,8500433,10200012,10200053,10200083,10200

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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=VDGbU-HHL6Lc8gfcl4DoCA

Content-Length: 267

Date: Fri, 13 Jun 2014 17:13:56 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=VDGbU-HHL6Lc8gfcl4DoCA">here</A>...</BODY></HTML>....

GET /pd/config.bin 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: portoautoonline.com.br

Cache-Control: no-cache

HTTP/1.1 200 OK

Date: Fri, 13 Jun 2014 17:13:27 GMT

Server: Apache/2.2.27 (Unix) mod_ssl/2.2.27 OpenSSL/1.0.1e-fips mod_bwlimited/1.4

Last-Modified: Wed, 11 Jun 2014 08:55:54 GMT

ETag: "3a9ae4-8678-4fb8b9cb16520"

Accept-Ranges: bytes

Content-Length: 34424

Connection: close

Content-Type: application/octet-stream

..b.~yT...cK4.M..K<....f..?...6.n..%..Y.Q.{gJ=..0.E(.G.t.E..54O.Y.E...).A4.e.I]........dO.1....*...K.acw=..p.C* ......4.9 7%.{s......]........Q.1...B7.....c.0.r..R.....r........K......I......9.M.O}V.*..&....u..h......$..Q.Z..............F.97....4. f..45........4.....EtK.7r...Y.D..f.cT...!..;.?.&.=.*D6 ...QA...... d3y.z.A*u...>f..J...Z@..x,|X.......im.(.[.*m.9D"....3.U-....'V.7.3.Upx..g.a.0!...A..#N.6..%.d3Wo....Q..........68....O.5.."B..e..a..h........G.rW......._.e...k..<.1.......a.V$.$.7..N;........;l;u.]..c..."...."Q ..n....D.'i8......hO.jQ..........UE.X...................7!..e....BN. ......{.Y.:E.....].^..._K....i...4|.?.c......`.%u.\.O.x.....LS..R.3z'...2....?........v7.....F..E...[..K...0);...A.....$n..U..1.".D...............V/./.(.......,2.... .49$...M.?c.w...J....(....^=.....K.......N....a..YR~.\.&.t_.P....A...X..=d........SF.'Z....~m.. J..p.i.Z.]....a`D......X.....c._p.<6J.&9......'.=I.{.X.|h"Z.c..C..V.C..&L.2N......:.....6.3.j........h.v.r^...oI...T...G......s_.`/3?u....w}Tp.....A.\...Q..L@M.....|..f.P.J..k.p......@...%H.....a........3N. ...4..W[.!.zV.SZ&F..7.T.o.o!n........E.~X)..Z..H...4.. .../.n...w.S...j8..mJ..E.......e.3...>.D..nR.G..86{:...D../.U...w8...c.][....x.!.;Z&.. ..#..nd]..J.w.hya1.>'.....i..(^...Z.`>..E...M.G....'o...Zi......0.R.\.)d..y.$0{F......#..7AZ.U:..(n.9=""..0.2...c`..........}.J.X_.$.....<..$.x.......}.......g@S..y..,...........:..k{.@..B..uXm.-..Ww....w.4....=(.Xy.a.x!..DL...S....A...M..rR4d....WQ.....O...N.S.. _.w..PWR...?Z9...kD.v..x.E.....HZV6.v...w.

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Map

The Trojan-PSW connects to the servers at the folowing location(s):

Strings from Dumps

Explorer.EXE_1912_rwx_01E00000_00027000:

.text

.text

`.data

`.data

.reloc

.reloc

http://www.google.com/webhp

http://www.google.com/webhp

PR_OpenTCPSocket

PR_OpenTCPSocket

gdiplus.dll

gdiplus.dll

GdiplusShutdown

GdiplusShutdown

ole32.dll

ole32.dll

gdi32.dll

gdi32.dll

: ;2*8.>

: ;2*8.>

3.#70!2)

3.#70!2)

x#m`a`cmddt-

x#m`a`cmddt-

6 !26!1'1

6 !26!1'1

7"52),,>

7"52),,>

;<)?$*%,

;<)?$*%,

71.(5;4=

71.(5;4=

(203,2$0

(203,2$0

/?./,5 <</pre><pre>:>(<<44=3%</pre><pre>8%/<8/?)?/</pre><pre>%/><!8?>!</!8?></pre><pre>HTTP/1.1</pre><pre>userenv.dll</pre><pre>del "%s"</pre><pre>if exist "%s" goto d</pre><pre>del /F "%s"</pre><pre>Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; SV1)</pre><pre>urlmon.dll</pre><pre>cabinet.dll</pre><pre>http://</pre><pre>https://</pre><pre>HTTP/1.</pre><pre>SSSh,4</pre><pre>GetProcessHeap</pre><pre>KERNEL32.dll</pre><pre>SetKeyboardState</pre><pre>ExitWindowsEx</pre><pre>MsgWaitForMultipleObjects</pre><pre>MapVirtualKeyW</pre><pre>GetKeyboardState</pre><pre>OpenWindowStationW</pre><pre>GetProcessWindowStation</pre><pre>CreateWindowStationW</pre><pre>CloseWindowStation</pre><pre>SetProcessWindowStation</pre><pre>USER32.dll</pre><pre>RegOpenKeyExW</pre><pre>RegEnumKeyExW</pre><pre>RegCloseKey</pre><pre>RegCreateKeyExW</pre><pre>ADVAPI32.dll</pre><pre>PathIsURLW</pre><pre>UrlUnescapeA</pre><pre>SHDeleteKeyW</pre><pre>SHLWAPI.dll</pre><pre>ShellExecuteW</pre><pre>SHELL32.dll</pre><pre>Secur32.dll</pre><pre>SetViewportOrgEx</pre><pre>GDI32.dll</pre><pre>WS2_32.dll</pre><pre>PFXImportCertStore</pre><pre>CertDeleteCertificateFromStore</pre><pre>CertOpenSystemStoreW</pre><pre>CertCloseStore</pre><pre>CertEnumCertificatesInStore</pre><pre>CertDuplicateCertificateContext</pre><pre>PFXExportCertStoreEx</pre><pre>CRYPT32.dll</pre><pre>HttpSendRequestExA</pre><pre>HttpQueryInfoA</pre><pre>HttpSendRequestExW</pre><pre>HttpSendRequestW</pre><pre>HttpSendRequestA</pre><pre>InternetCrackUrlA</pre><pre>HttpOpenRequestA</pre><pre>HttpAddRequestHeadersA</pre><pre>GetUrlCacheEntryInfoW</pre><pre>HttpAddRequestHeadersW</pre><pre>WININET.dll</pre><pre>OLEAUT32.dll</pre><pre>NETAPI32.dll</pre><pre>6 6&6/656{6</pre><pre>cGlobal\XXX</pre><pre>nspr4.dll</pre><pre>nss3.dll</pre><pre>SysShadow</pre><pre>kernel32.dll</pre><pre>"%s" %s</pre><pre>/c "%s"</pre><pre>%sx.%s</pre><pre>%sx</pre><pre>%Documents and Settings%\%current user%\Application Data\Dyfezo\subuu.imi</pre><pre>%Documents and Settings%\%current user%\Application Data\Dyfezo</pre><pre>subuu.imi</pre><pre>Global\{897C696E-72F9-C405-7A38-94AB6D8A8A00}</pre><pre>%Documents and Settings%\%current user%\Application Data</pre><pre>{1F07DB4B-C0DC-527E-7A38-94AB6D8A8A00}</pre>