Gen.Variant.Kazy.7590_22e36d05f3 – Adaware

Dynamic Analysis

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

MD5	File path
98b662ec86b74269166648a4a3ff2f18	c:\Documents and Settings\"%CurrentUserName%"\Application Data\Qaus\kyygn.exe

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

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):
%original file name%.exe:524
kyygn.exe:1068
Delete the original Trojan file.
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)
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:
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)

Company Name: Product Name: DCOM ManagerProduct Version: 1, 10, 0, 0Legal Copyright: Copyright (C) 2010Legal Trademarks: Original Filename: dcommgr.exeInternal Name: DCOMMGRFile Version: 1, 10, 0, 1File Description: DCOM ManagerComments: Language: English (United States)

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	4096	4704	5120	4.29746	0b85c7cb03e84b20894ef6c47d1a66aa
.rsrc	12288	14664	14848	4.86441	d49fb1f26579c5165bd8c2890a3df0d3
.data	28672	360448	67584	5.30906	f7fe0d50a95dba393446a6cd2fbf405f
.reloc	389120	24	512	0.21283	6adccfb1a67b5201a2d31467703b316a
.rdata	393216	65151	65536	5.35363	4c5bd28dcfe6ba34364c038dfcb6b184

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

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)

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; charset=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:'17259,4000116,4007661,4008142,4009033,4010858,4010899,4011228,4011679,4012373,4013823,4014431,4014636,4014805,4016127,4016373,4016824,4017818,4017980,4017982,4018181,4018251,4019031,4019483,4019702,4019798,4019800,4020025,4020029,4020148,4020226,4020240,4020306,4020379,4020381,4020383,4020385,4020438,4020500,4020562,4020572,4020663,4020705,4020738,4020815,4020824,4020872,4020879,4020892,4021071,4021092,4021110,4021125,4021545,4021564,4021641,4021675,4022073,8300007,8300030,8300060,8300072,8300075,8300078,8500223,8500272,8500393,8500474,8500554,8500585,8500593,8500605,10200083,10200347,10200389,10200442,10200491,10200527,10200585,10200597,10200599,10200671,10200673',kCSI:{e:'17259,4000116,4007661,4008142,4009033,4010858,4010899,4011228,4011679,4012373,4013823,4014431,4014636,4014805,4016127,4016373,4016824,4017818,4017980,4017982,4018181,4018251,4019031,4019483,4019702,4019798,4019800,4020025,4020029,4020148,4020226,4020240,4020306,4020379,4020381,4020383,4020385,4020438,4020500,4020562,4020572,4020663,4020705,4020738,4020815,4020824,4020872,4020879,4020892,4021071,4021092,4021110,4021125,4021545,4021564,4021641,4021675,4022073,8300007,8300030,8300060,8300072,8

<<< skipped >>>

Map

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

Strings from Dumps

Explorer.EXE_1684_rwx_00EE0000_0002C000:

.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}

Summary

Dynamic Analysis

Removals

Static Analysis

Network Activity

Map

Strings from Dumps