MD5: 4f6540088a5d70594b9282f0da542cf4
SHA1: ca155de1b7c01565259a7ff957814aaae0dc9857
SHA256: aeedcf6100e0b73587a3d048fcc1a6e0be9303259fbc310f192e623dae3248c2
SSDeep: 24576:K4lavt0LkLL9IMixoEgeawq1WYpqKoBoThhxyj51Gq9MmCS:dkwkn9IMHeaTWYpqKoBoThh3aPCS
Size: 1253888 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: StdLib
Created at: 2014-12-27 08:51:36
Analyzed on: WindowsXPESX SP3 32-bit

Summary:

Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

uwboi.exe:3536
2678.exe:2920
%original file name%.exe:2464

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

Explorer.EXE:1948

Mutexes

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

File activity

The process 2678.exe:2920 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\Hoboic\uwboi.exe (164 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmp91e1eaf5.bat (185 bytes)

The process %original file name%.exe:2464 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\2678\2678.exe (164 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\2678\2678.exe (0 bytes)

Registry activity

The process uwboi.exe:3536 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "88 B7 FA 48 4C 84 C7 CE B2 59 EC AD 6B 95 E2 2F"

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

The process 2678.exe:2920 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "4C 0E E2 5A 8A 90 2F 26 4C EA E5 00 0F 88 53 E9"

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

The process %original file name%.exe:2464 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C1 0C A1 77 A4 48 FE EF EF 74 59 0C 1A 5A 3D 35"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\2678]
"2678.exe" = "2678"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{fdd9f6f3-7454-11e2-b4cd-806d6172696f}]
"BaseClass" = "Drive"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{773a730e-74fb-11e2-b597-000c293bdf2f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{fdd9f6f2-7454-11e2-b4cd-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{fdd9f6f5-7454-11e2-b4cd-806d6172696f}]
"BaseClass" = "Drive"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Desktop" = "%Documents and Settings%\All Users\Desktop"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"
"Personal" = "%Documents and Settings%\%current user%\My Documents"

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

"IntranetName" = "1"

The Trojan 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"

Dropped PE files

HOSTS file anomalies

No changes have been detected.

Rootkit activity

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

HttpSendRequestExW
HttpSendRequestExA
InternetReadFileExA
HttpSendRequestA
HttpSendRequestW
InternetQueryDataAvailable
InternetCloseHandle
HttpQueryInfoA
InternetReadFile

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

Company Name:
Product Name:
Product Version:
Legal Copyright:
Legal Trademarks:
Original Filename:
Internal Name:
File Version:
File Description:
Comments:
Language: Language Neutral

PE Sections

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

URLs

URL	IP
hxxp://rea.co.ke/images/gsdwwk/config.bin	194.201.253.2

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

ET CURRENT_EVENTS Zbot Generic URI/Header Struct .bin

Traffic

GET /images/gsdwwk/config.bin HTTP/1.1

Accept: */*

User-Agent: Mozilla/5.0 (compatible; MSIE 6.0; Windows NT 6.2)

Host: rea.co.ke

Cache-Control: no-cache

HTTP/1.1 404 Not Found

Date: Tue, 20 Jan 2015 22:13:31 GMT

Server: Apache/2.2.27 (Unix) mod_ssl/2.2.27 OpenSSL/0.9.8e-fips-rhel5 mod_bwlimited/1.4

Content-Length: 341

Connection: close

Content-Type: text/html; charset=iso-8859-1
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">.<html>&
lt;head>.<title>404 Not Found</title>.</head><
body>.<h1>Not Found</h1>.<p>The requested URL /im
ages/gsdwwk/config.bin was not found on this server.</p>.<p&g
t;Additionally, a 404 Not Found.error was encountered while trying to 
use an ErrorDocument to handle the request.</p>.</body><
;/html>...

GET /images/gsdwwk/config.bin HTTP/1.1

Accept: */*

User-Agent: Mozilla/5.0 (compatible; MSIE 6.0; Windows NT 6.2)

Host: rea.co.ke

Cache-Control: no-cache

HTTP/1.1 404 Not Found

Date: Tue, 20 Jan 2015 22:13:25 GMT

Server: Apache/2.2.27 (Unix) mod_ssl/2.2.27 OpenSSL/0.9.8e-fips-rhel5 mod_bwlimited/1.4

Content-Length: 341

Connection: close

Content-Type: text/html; charset=iso-8859-1
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">.<html>&
lt;head>.<title>404 Not Found</title>.</head><
body>.<h1>Not Found</h1>.<p>The requested URL /im
ages/gsdwwk/config.bin was not found on this server.</p>.<p&g
t;Additionally, a 404 Not Found.error was encountered while trying to 
use an ErrorDocument to handle the request.</p>.</body><
;/html>...

GET /images/gsdwwk/config.bin HTTP/1.1

Accept: */*

User-Agent: Mozilla/5.0 (compatible; MSIE 6.0; Windows NT 6.2)

Host: rea.co.ke

Cache-Control: no-cache

HTTP/1.1 404 Not Found

Date: Tue, 20 Jan 2015 22:13:31 GMT

Server: Apache/2.2.27 (Unix) mod_ssl/2.2.27 OpenSSL/0.9.8e-fips-rhel5 mod_bwlimited/1.4

Content-Length: 341

Connection: close

Content-Type: text/html; charset=iso-8859-1
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">.<html>&
lt;head>.<title>404 Not Found</title>.</head><
body>.<h1>Not Found</h1>.<p>The requested URL /im
ages/gsdwwk/config.bin was not found on this server.</p>.<p&g
t;Additionally, a 404 Not Found.error was encountered while trying to 
use an ErrorDocument to handle the request.</p>.</body><
;/html>...

GET /images/gsdwwk/config.bin HTTP/1.1

Accept: */*

User-Agent: Mozilla/5.0 (compatible; MSIE 6.0; Windows NT 6.2)

Host: rea.co.ke

Cache-Control: no-cache

HTTP/1.1 404 Not Found

Date: Tue, 20 Jan 2015 22:13:25 GMT

Server: Apache/2.2.27 (Unix) mod_ssl/2.2.27 OpenSSL/0.9.8e-fips-rhel5 mod_bwlimited/1.4

Content-Length: 341

Connection: close

Content-Type: text/html; charset=iso-8859-1
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">.<html>&
lt;head>.<title>404 Not Found</title>.</head><
body>.<h1>Not Found</h1>.<p>The requested URL /im
ages/gsdwwk/config.bin was not found on this server.</p>.<p&g
t;Additionally, a 404 Not Found.error was encountered while trying to 
use an ErrorDocument to handle the request.</p>.</body><
;/html>...

GET /images/gsdwwk/config.bin HTTP/1.1

Accept: */*

User-Agent: Mozilla/5.0 (compatible; MSIE 6.0; Windows NT 6.2)

Host: rea.co.ke

Cache-Control: no-cache

HTTP/1.1 404 Not Found

Date: Tue, 20 Jan 2015 22:13:37 GMT

Server: Apache/2.2.27 (Unix) mod_ssl/2.2.27 OpenSSL/0.9.8e-fips-rhel5 mod_bwlimited/1.4

Content-Length: 341

Connection: close

Content-Type: text/html; charset=iso-8859-1
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">.<html>&
lt;head>.<title>404 Not Found</title>.</head><
body>.<h1>Not Found</h1>.<p>The requested URL /im
ages/gsdwwk/config.bin was not found on this server.</p>.<p&g
t;Additionally, a 404 Not Found.error was encountered while trying to 
use an ErrorDocument to handle the request.</p>.</body><
;/html>...

GET /images/gsdwwk/config.bin HTTP/1.1

Accept: */*

User-Agent: Mozilla/5.0 (compatible; MSIE 6.0; Windows NT 6.2)

Host: rea.co.ke

Cache-Control: no-cache

HTTP/1.1 404 Not Found

Date: Tue, 20 Jan 2015 22:13:18 GMT

Server: Apache/2.2.27 (Unix) mod_ssl/2.2.27 OpenSSL/0.9.8e-fips-rhel5 mod_bwlimited/1.4

Content-Length: 341

Connection: close

Content-Type: text/html; charset=iso-8859-1
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">.<html>&
lt;head>.<title>404 Not Found</title>.</head><
body>.<h1>Not Found</h1>.<p>The requested URL /im
ages/gsdwwk/config.bin was not found on this server.</p>.<p&g
t;Additionally, a 404 Not Found.error was encountered while trying to 
use an ErrorDocument to handle the request.</p>.</body><
;/html>...

GET /images/gsdwwk/config.bin HTTP/1.1

Accept: */*

User-Agent: Mozilla/5.0 (compatible; MSIE 6.0; Windows NT 6.2)

Host: rea.co.ke

Cache-Control: no-cache

HTTP/1.1 404 Not Found

Date: Tue, 20 Jan 2015 22:13:18 GMT

Server: Apache/2.2.27 (Unix) mod_ssl/2.2.27 OpenSSL/0.9.8e-fips-rhel5 mod_bwlimited/1.4

Content-Length: 341

Connection: close

Content-Type: text/html; charset=iso-8859-1
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">.<html>&
lt;head>.<title>404 Not Found</title>.</head><
body>.<h1>Not Found</h1>.<p>The requested URL /im
ages/gsdwwk/config.bin was not found on this server.</p>.<p&g
t;Additionally, a 404 Not Found.error was encountered while trying to 
use an ErrorDocument to handle the request.</p>.</body><
;/html>...

GET /images/gsdwwk/config.bin HTTP/1.1

Accept: */*

User-Agent: Mozilla/5.0 (compatible; MSIE 6.0; Windows NT 6.2)

Host: rea.co.ke

Cache-Control: no-cache

HTTP/1.1 404 Not Found

Date: Tue, 20 Jan 2015 22:13:37 GMT

Server: Apache/2.2.27 (Unix) mod_ssl/2.2.27 OpenSSL/0.9.8e-fips-rhel5 mod_bwlimited/1.4

Content-Length: 341

Connection: close

Content-Type: text/html; charset=iso-8859-1
<!DOCTYPE HTML PUBLIC "-//IETF//DTD HTML 2.0//EN">.<html>&
lt;head>.<title>404 Not Found</title>.</head><
body>.<h1>Not Found</h1>.<p>The requested URL /im
ages/gsdwwk/config.bin was not found on this server.</p>.<p&g
t;Additionally, a 404 Not Found.error was e..

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

.text

`.data

.reloc

gdiplus.dll

GdiplusShutdown

ole32.dll

gdi32.dll

HTTP/1.1

hXXp://rea.co.ke/images/gsdwwk/config.bin

Mozilla/5.0 (compatible; MSIE 6.0; Windows NT 6.2)

pufjwdx.jvh

" !=%(>";;

=225;6%%7!=

3:6 1*7=$;-

*4*-0*1?7!

MK[(bocmdgs

15#77??68.

&'/( <99

$!*4,#)<:

mfh{g~amzgs.dgg

:; 1299;2

>.Rdd

<-?).$: (26

userenv.dll

del "%s"

if exist "%s" goto d

del /F "%s"

urlmon.dll

cabinet.dll

hXXp://

hXXps://

HTTP/1.

hXXp://VVV.google.com/webhp

t7SSSh

t"SSSh

GetProcessHeap

KERNEL32.dll

MapVirtualKeyW

ExitWindowsEx

OpenWindowStationW

GetProcessWindowStation

CreateWindowStationW

CloseWindowStation

SetProcessWindowStation

SetKeyboardState

GetKeyboardState

MsgWaitForMultipleObjects

USER32.dll

RegOpenKeyExW

RegEnumKeyExW

RegCloseKey

RegCreateKeyExW

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

HttpQueryInfoA

InternetCrackUrlA

HttpOpenRequestA

HttpAddRequestHeadersA

HttpSendRequestA

HttpSendRequestExA

HttpSendRequestExW

HttpSendRequestW

GetUrlCacheEntryInfoW

HttpAddRequestHeadersW

WININET.dll

OLEAUT32.dll

NETAPI32.dll

t.crp

=?>#?.?;?

9%9)9/939

SysShadow

kernel32.dll

"%s" %s

/c "%s"

%sx.%s

%sx

cGlobal\XXX

Global\{63510941-61F1-5FE8-81F8-90BB468A9659}

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

{312D8459-1E21-FDC5-9018-914C72CED74A}

%Documents and Settings%\%current user%\Application Data\Odby\actou.zib

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

actou.zib

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):
   

   uwboi.exe:3536
   2678.exe:2920
   %original file name%.exe:2464
   

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\Hoboic\uwboi.exe (164 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\tmp91e1eaf5.bat (185 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\2678\2678.exe (164 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.