MD5: 22e36d05f3a81dc50397f777cf022eb0
SHA1: c3c5472b3b42401bb2cc2b22bc282d1a5183a842
SHA256: 78e832e16dc1bd8a84f6fc29f8d31c40380315bff9c28532025ee9183d850954
SSDeep: 3072:opLOyy2RTJkpalzbEM7u6tDmOUtAlZvOE2C wzEUmJIkSoHE:eOGK4Bbt6aqOUtA/O5
Size: 154624 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: Install Manager
Created at: 2007-09-07 21:51:46
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 creates the following process(es):

%original file name%.exe:524
kyygn.exe:1068

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

Explorer.EXE:1684

Mutexes

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

File activity

The process %original file name%.exe:524 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\Qaus\kyygn.exe (154 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmp4254f07e.bat (177 bytes)

Registry activity

The process %original file name%.exe:524 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "63 CA F6 EE F1 FE 15 64 8B 6A 52 D5 B4 AA DA AF"

[HKCU\Software\Microsoft\Lysi]
"Ydcivizue" = "FA 9F B6 C6 A5 48 D2 5E B8 ED 87 B8 D6 C9 D5 3E"

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

The process kyygn.exe:1068 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "50 20 2E 1E F5 DD E7 1A 48 04 DF 3D D8 F1 84 87"

[HKCU\Software\Microsoft\Lysi]
"Ydcivizue" = "FA 9F B6 C6 A5 48 D2 5E B8 ED 87 B8 D6 C9 D5 3E"

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

Dropped PE files

HOSTS file anomalies

No changes have been detected.

Rootkit activity

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

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

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

PFXImportCertStore

The Trojan 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
SetWindowTextW
EndPaint
BeginPaint
DefWindowProcW
RegisterClassExA
GetMessageA
DefDlgProcW
SwitchDesktop
OpenInputDesktop
RegisterClassExW
RegisterClassW
GetCapture
PeekMessageW
GetMessageW
GetWindowDC
TranslateMessage
GetDC
ReleaseDC

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

WSASend
recv
WSARecv
send
closesocket

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

GetFileAttributesExW

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

LdrLoadDll
NtCreateThread

Propagation

VersionInfo

Company Name:
Product Name: DCOM Manager
Product Version: 1, 10, 0, 0
Legal Copyright: Copyright (C) 2010
Legal Trademarks:
Original Filename: dcommgr.exe
Internal Name: DCOMMGR
File Version: 1, 10, 0, 1
File Description: DCOM Manager
Comments:
Language: English (United States)

PE Sections

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

URLs

URL	IP
hxxp://www.google.com.ua/webhp?gfe_rd=cr&ei=WNIWVOz-HOqk8wfGwYHYBg	173.194.113.216

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=WNIWVOz-HOqk8wfGwYHYBg 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: Mon, 15 Sep 2014 11:49:44 GMT

Expires: -1

Cache-Control: private, max-age=0

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

Set-Cookie: PREF=ID=2a6a2b4171e5c177:FF=0:TM=1410781784:LM=1410781784:S=jfvQP7LxH54bo9nJ; expires=Wed, 14-Sep-2016 11:49:44 GMT; path=/; domain=.google.com.ua

Set-Cookie: NID=67=Gl81pvzB16mjGd_vZktUTSXVZs5ThkNldduUybuh3Gfh7MFS-pTvq-zosGxB1tG3q-YylSKQL2WBDSH93k4f8Lhw2MJ2bKWF_DGjx1dPWjcXA3dkxIAt4h0ueLm81KcQ; expires=Tue, 17-Mar-2015 11:49:44 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,p=0.002

Connection: close
<!doctype html><html itemscope="" itemtype="hXXp://schema.org
/WebPage" lang="uk"><head><meta content="text/html; charse
t=UTF-8" http-equiv="content-type"><meta content="/images/google
_favicon_128.png" itemprop="image"><title>Google</title>
;<script>(function(){window.google={kEI:'WNIWVLuvIYW_ywPKkIKwDQ'
,kEXPI:'17259,4000116,4007661,4008142,4009033,4010858,4010899,4011228,
4011679,4012373,4013823,4014431,4014636,4014805,4016127,4016373,401682
4,4017818,4017980,4017982,4018181,4018251,4019031,4019483,4019702,4019
798,4019800,4020025,4020029,4020148,4020226,4020240,4020306,4020379,40
20381,4020383,4020385,4020438,4020500,4020562,4020572,4020663,4020705,
4020738,4020815,4020824,4020872,4020879,4020892,4021071,4021092,402111
0,4021125,4021545,4021564,4021641,4021675,4022073,8300007,8300030,8300
060,8300072,8300075,8300078,8500223,8500272,8500393,8500474,8500554,85
00585,8500593,8500605,10200083,10200347,10200389,10200442,10200491,102
00527,10200585,10200597,10200599,10200671,10200673',kCSI:{e:'17259,400
0116,4007661,4008142,4009033,4010858,4010899,4011228,4011679,4012373,4
013823,4014431,4014636,4014805,4016127,4016373,4016824,4017818,4017980
,4017982,4018181,4018251,4019031,4019483,4019702,4019798,4019800,40200
25,4020029,4020148,4020226,4020240,4020306,4020379,4020381,4020383,402
0385,4020438,4020500,4020562,4020572,4020663,4020705,4020738,4020815,4
020824,4020872,4020879,4020892,4021071,4021092,4021110,4021125,4021545
,4021564,4021641,4021675,4022073,8300007,8300030,8300060,8300072,8
<<< skipped >>>

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

.text

`.data

.reloc

HTTP/1.1

userenv.dll

del "%s"

if exist "%s" goto d

del /F "%s"

urlmon.dll

cabinet.dll

gdiplus.dll

GdiplusShutdown

ole32.dll

gdi32.dll

2(3:"0&6

=!*73/;-~4*6

=48%?$93*5#

/>;')/".51

;&,?;,<*<

29/3,1'4

83%9&;->

!:(>-'5`

hXXp://

hXXps://

HTTP/1.

PR_OpenTCPSocket

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

GetProcessHeap

KERNEL32.dll

MapVirtualKeyW

MsgWaitForMultipleObjects

SetKeyboardState

GetKeyboardState

OpenWindowStationW

GetProcessWindowStation

CreateWindowStationW

CloseWindowStation

SetProcessWindowStation

ExitWindowsEx

USER32.dll

RegCreateKeyExW

CryptImportKey

RegOpenKeyExW

CryptDestroyKey

RegCloseKey

RegEnumKeyExW

ADVAPI32.dll

UrlUnescapeA

SHDeleteKeyW

PathIsURLW

SHLWAPI.dll

ShellExecuteW

SHELL32.dll

Secur32.dll

SetViewportOrgEx

GDI32.dll

WS2_32.dll

CertDeleteCertificateFromStore

CertOpenSystemStoreW

CertCloseStore

PFXImportCertStore

CertEnumCertificatesInStore

CertDuplicateCertificateContext

PFXExportCertStoreEx

CRYPT32.dll

HttpSendRequestExA

HttpQueryInfoA

HttpSendRequestExW

HttpSendRequestW

GetUrlCacheEntryInfoW

HttpAddRequestHeadersW

HttpAddRequestHeadersA

HttpSendRequestA

InternetCrackUrlA

HttpOpenRequestA

WININET.dll

OLEAUT32.dll

NETAPI32.dll

kernel32.dll

"%s" %s

/c "%s"

%sx.%s

%sx

nspr4.dll

SysShadow

e.dat

%Documents and Settings%\%current user%\Application Data\Agak\ygnub.ves

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

ygnub.ves

Global\{DB4D22B9-B2B2-97DB-E877-EA3743BAADDA}

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

{4D369092-0099-01A0-E877-EA3743BAADDA}

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:524
   kyygn.exe:1068
   

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

   %Documents and Settings%\%current user%\Application Data\Qaus\kyygn.exe (154 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\tmp4254f07e.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.