Gen.Variant.Kazy.64397_faca77ed7a

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

HEUR:Trojan.Win32.Generic (Kaspersky), Gen:Variant.Kazy.64397 (B) (Emsisoft), Gen:Variant.Kazy.64397 (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: faca77ed7a8435fb6e395d9d93536cca
SHA1: c13cdcfeb6e580bfb038a61199e52537f97cae6a
SHA256: ab878acf45aa11a8f36408091c435e251d6382b86ac6d745c8baf6fdcc2794af
SSDeep: 3072:SU8sQHo2Z7spE92/q/hy3Hp4Cah5Mo8JoLdD69:rQL7njjCahj8Jot6
Size: 150016 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2012-01-26 08:05:54
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):

voteniw.exe:972
%original file name%.exe:1156

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

Explorer.EXE:532

Mutexes

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

File activity

The process %original file name%.exe:1156 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\tmp3ec830ec.bat (177 bytes)
%Documents and Settings%\%current user%\Application Data\Sauqyts\voteniw.exe (150 bytes)

Registry activity

The process voteniw.exe:972 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "11 0A 0D 2B DB E1 D2 A1 53 4E B0 8E 06 0E F4 93"

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

The process %original file name%.exe:1156 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "56 F9 2D 36 C2 AA 66 24 69 6A B2 24 EB 8E 9D A6"

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

[HKCU\Software\Microsoft\Seuzuk]
"Leugipeq" = "22 03 51 74 13 70 65 9F 5D 2E 8E 99 88 F6 50 84"

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
9c08828603b65e190860f10f6f48b2f5 c:\Documents and Settings\"%CurrentUserName%"\Application Data\Sauqyts\voteniw.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 20087 20480 4.77088 47cdf8085f8d4115b5df05d4dbfdd050
.itab 24576 5974 6144 3.64703 9f879b0ea48f93812ae21b516d1ad09b
.etab 32768 85 512 0.674133 7a9e57eed2c7b93d47217e8ac24c0cfd
.input 36864 640 1024 3.74729 4c42d75c0d7e835a4dd3812a80104f74
.data 40960 130902 2048 3.95529 6ffae979ff0ac9f07150e18d3c64a64c
.rsrc 172032 117026 117248 5.40766 4782614515c61e821a5f16cc718489c0
.reloc 290816 1396 1536 4.39392 c52700f5623940bc2f15a4158ad50cff

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: 63
Cache-Control: no-cache

#..es.'f6-wlW.$w....&..,....:..!...el.6q..v.>.>[email protected]....
HTTP/1.1 404 Not Found
Server: nginx/1.6.2
Date: Sun, 15 Mar 2015 01:16:49 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: 63
Cache-Control: no-cache

#..es.'f6-wlW.$w....&..,....:..!...el.6q..v.>.>[email protected]....
HTTP/1.1 404 Not Found
Server: nginx/1.6.2
Date: Sun, 15 Mar 2015 01:17:05 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: 63
Cache-Control: no-cache

#..es.'f6-wlW.$w....&..,....:..!...el.6q..v.>.>[email protected]....
HTTP/1.1 404 Not Found
Server: nginx/1.6.2
Date: Sun, 15 Mar 2015 01:17:00 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: 63
Cache-Control: no-cache

#..es.'f6-wlW.$w....&..,....:..!...el.6q..v.>.>[email protected]....
HTTP/1.1 404 Not Found
Server: nginx/1.6.2
Date: Sun, 15 Mar 2015 01:16:55 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: 63
Cache-Control: no-cache

#..es.'f6-wlW.$w....&..,....:..!...el.6q..v.>.>[email protected]....
HTTP/1.1 404 Not Found
Server: nginx/1.6.2
Date: Sun, 15 Mar 2015 01:17:05 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: 63
Cache-Control: no-cache

#..es.'f6-wlW.$w....&..,....:..!...el.6q..v.>.>[email protected]....
HTTP/1.1 404 Not Found
Server: nginx/1.6.2
Date: Sun, 15 Mar 2015 01:16:55 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: 63
Cache-Control: no-cache

#..es.'f6-wlW.$w....&..,....:..!...el.6q..v.>.>[email protected]....
HTTP/1.1 404 Not Found
Server: nginx/1.6.2
Date: Sun, 15 Mar 2015 01:16:49 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: 63
Cache-Control: no-cache

#..es.'f6-wlW.$w....&..,....:..!...el.6q..v.>.>[email protected]....
HTTP/1.1 404 Not Found
Server: nginx/1.6.2
Date: Sun, 15 Mar 2015 01:17:00 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_532_rwx_01E00000_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
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\Oda\ryusixz.aty
%Documents and Settings%\%current user%\Application Data\Oda
ryusixz.aty
%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):

    voteniw.exe:972
    %original file name%.exe:1156

  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\tmp3ec830ec.bat (177 bytes)
    %Documents and Settings%\%current user%\Application Data\Sauqyts\voteniw.exe (150 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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