Trojan.GenericKD.2054990_4f6540088a – Adaware

Dynamic Analysis

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

MD5	File path
f5173a826964cb5cdbd1bbca033d04cd	c:\Documents and Settings\"%CurrentUserName%"\Application Data\Hoboic\uwboi.exe

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

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):
uwboi.exe:3536
2678.exe:2920
%original file name%.exe:2464
Delete the original Trojan file.
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)
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:
Product Version:
Legal Copyright:
Legal Trademarks:
Original Filename:
Internal Name:
File Version:
File Description:
Comments:
Language: Language Neutral

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

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	4096	573044	573440	4.63126	74af66fa540568c59b3868e78900e476
.rdata	577536	182122	182272	4.0072	576c856afaad699ad9fe099fc6a9ce33
.data	761856	40756	25088	1.38934	e6d2e204147f7cdc3055011093632f54
.rsrc	802816	429304	429568	4.93738	6cfbd924686f74f6fa272f8f57b20f4c
.reloc	1232896	42082	42496	3.63105	c2f6ddaeef894b7510c3be928eeae5dd

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

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

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

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><head>.<title>404 Not Found</title>.</head><body>.<h1>Not Found</h1>.<p>The requested URL /images/gsdwwk/config.bin was not found on this server.</p>.<p>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><head>.<title>404 Not Found</title>.</head><body>.<h1>Not Found</h1>.<p>The requested URL /images/gsdwwk/config.bin was not found on this server.</p>.<p>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><head>.<title>404 Not Found</title>.</head><body>.<h1>Not Found</h1>.<p>The requested URL /images/gsdwwk/config.bin was not found on this server.</p>.<p>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><head>.<title>404 Not Found</title>.</head><body>.<h1>Not Found</h1>.<p>The requested URL /images/gsdwwk/config.bin was not found on this server.</p>.<p>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><head>.<title>404 Not Found</title>.</head><body>.<h1>Not Found</h1>.<p>The requested URL /images/gsdwwk/config.bin was not found on this server.</p>.<p>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><head>.<title>404 Not Found</title>.</head><body>.<h1>Not Found</h1>.<p>The requested URL /images/gsdwwk/config.bin was not found on this server.</p>.<p>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><head>.<title>404 Not Found</title>.</head><body>.<h1>Not Found</h1>.<p>The requested URL /images/gsdwwk/config.bin was not found on this server.</p>.<p>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><head>.<title>404 Not Found</title>.</head><body>.<h1>Not Found</h1>.<p>The requested URL /images/gsdwwk/config.bin was not found on this server.</p>.<p>Additionally, a 404 Not Found.error was e..

Map

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

Strings from Dumps

Explorer.EXE_1948_rwx_01100000_0002C000:

.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.

&'/(

$!*4,#)<:>

mfh{g~amzgs.dgg

:; 1299;2

>.Rdd

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

Summary

Dynamic Analysis

Removals

Static Analysis

Network Activity

Map

Strings from Dumps