Sat, 04/01/2017 - 03:05

Trojan.Generic.20493032_dd346f237b

HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Generic.20493032 (B) (Emsisoft), Trojan.Generic.20493032 (AdAware), Backdoor.Win32.Xtrat.FD, GenericAutorunWorm.YR, GenericInjector.YR (Lavasoft MAS) Behaviour: Trojan, Backdoor, Worm, WormAutorun

The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

Summary

Dynamic Analysis

Static Analysis

Network Activity

Map

Strings from Dumps

Removals

Summary

MD5: dd346f237b63640681eb0fcca0db9e2e

SHA1: e37498d25c6e9191c3b430a5e69c14a906f9ac4d

SHA256: 4c114640f9e3e89f6b3ca27cde31dd7a58ff65d028c3a9136c4a95f8d80593a2

SSDeep: 3072:B2/C6U/CXKwCA/NsC1DrdSocnvD9kfR6ftWSkybNfLjS:5HMKCF/fR6fIozj

Size: 150016 bytes

File type: EXE

Platform: WIN32

Entropy: Packed

PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6

Company: Gemius

Created at: 2017-03-14 00:50:51

Analyzed on: Windows7 SP1 32-bit

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

Dynamic Analysis

Payload

Behaviour	Description
WormAutorun	A worm can spread via removable drives. It writes its executable and creates "autorun.inf" scripts on all removable drives. The autorun script will execute the Trojan's file once a user opens a drive's folder in Windows Explorer.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:3584
.exe:3792

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

svchost.exe:3616
iexplore.exe:3804

Mutexes

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

File activity

The process %original file name%.exe:3584 makes changes in the file system.

The Trojan creates and/or writes to the following file(s):

C:\Windows\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new (768 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\a33333.xml (1 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\LoMkjwQ.exe (673 bytes)
C:\Windows\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new (768 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\.exe (44 bytes)

The Trojan deletes the following file(s):

C:\Users\"%CurrentUserName%"\AppData\Local\Temp\a33333.xml (0 bytes)

The process .exe:3792 makes changes in the file system.

The Trojan deletes the following file(s):

C:\Users\"%CurrentUserName%"\AppData\Local\Temp\x.html (0 bytes)

Registry activity

The process %original file name%.exe:3584 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"AutoDetect" = "1"
"UNCAsIntranet" = "0"

The Trojan deletes the following value(s) in system registry:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass"
"IntranetName"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName"

The process .exe:3792 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKCU\Software\XtremeRAT]
"Mutex" = "lmx8pleQ0FRNPt"

Dropped PE files

MD5	File path
54a47f6b5e09a77e61649109c6a08866	c:\Users\"%CurrentUserName%"\AppData\Local\Temp\.exe
54a47f6b5e09a77e61649109c6a08866	c:\Windows\System32\InstallDir\svchost.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

A worm can spread via removable drives. It writes its executable and creates "autorun.inf" scripts on all removable drives. The autorun script will execute the Trojan's file once a user opens a drive's folder in Windows Explorer.

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*

Terminate malicious process(es) (How to End a Process With the Task Manager):
%original file name%.exe:3584
.exe:3792
Delete the original Trojan file.
Delete or disinfect the following files created/modified by the Trojan:
C:\Windows\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new (768 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\a33333.xml (1 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\LoMkjwQ.exe (673 bytes)
C:\Windows\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new (768 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\.exe (44 bytes)
Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
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: 1.0.0.0
Legal Copyright:
Legal Trademarks:
Original Filename: setup.exe
Internal Name: setup.exe
File Version: 1.0.0.0
File Description:
Comments:
Language: Chinese (Simplified, PRC)

Company Name: Product Name: Product Version: 1.0.0.0 Legal Copyright: Legal Trademarks: Original Filename: setup.exe Internal Name: setup.exe File Version: 1.0.0.0 File Description: Comments: Language: Chinese (Simplified, PRC)

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	8192	147636	147968	4.96383	b3d0d7d4f93b32d2f835ea74e3a5f63b
.rsrc	163840	1024	1024	1.45033	eb430732b96f92c7a34280b006cf4762
.reloc	172032	12	512	0.070639	f4afd64c7ac0ca5a63ec3846c653b823

Dropped from:

26c8022bdcc2dc7c31dd8c860b11d3ab

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

URL	IP
ah-antihacker.ddns.net

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

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

Strings from Dumps

svchost.exe_3616:

.text

`.data

.rsrc

@.reloc

msvcrt.dll

API-MS-Win-Core-ProcessThreads-L1-1-0.dll

KERNEL32.dll

NTDLL.DLL

API-MS-Win-Security-Base-L1-1-0.dll

API-MS-WIN-Service-Core-L1-1-0.dll

API-MS-WIN-Service-winsvc-L1-1-0.dll

RPCRT4.dll

ole32.dll

ntdll.dll

_amsg_exit

RegCloseKey

RegOpenKeyExW

GetProcessHeap

svchost.pdb

version="5.1.0.0"

name="Microsoft.Windows.Services.SvcHost"

Host Process for Windows Services

Software\Microsoft\Windows NT\CurrentVersion\Svchost

Software\Microsoft\Windows NT\CurrentVersion\MgdSvchost

\PIPE\

Host Process for Windows Services

6.1.7600.16385 (win7_rtm.090713-1255)

svchost.exe

Windows

Operating System

6.1.7600.16385

svchost.exe_3616_rwx_10000000_0004D000:

`.rsrc

ServerKeyloggerU

789:;

%SERVER%

URLMON.DLL

shell32.dll

hXXp://

advapi32.dll

kernel32.dll

mpr.dll

version.dll

comctl32.dll

gdi32.dll

opengl32.dll

user32.dll

wintrust.dll

msimg32.dll

juXqhu2.iu

KWindows

TServerKeylogger

GetWindowsDirectoryW

RegOpenKeyExW

RegCreateKeyW

RegCloseKey

RegOpenKeyExA

FindExecutableW

ShellExecuteW

SHDeleteKeyW

URLDownloadToCacheFileW

UnhookWindowsHookEx

SetWindowsHookExW

MapVirtualKeyW

GetKeyboardLayout

GetKeyState

GetKeyboardType

GetKeyboardState

FtpPutFileW

FtpSetCurrentDirectoryW

.idata

.rdata

P.reloc

P.rsrc

URLDb

KERNEL32.DLL

ntdll.dll

oleaut32.dll

shlwapi.dll

wininet.dll

x.html

HKEY_CLASSES_ROOT

HKEY_CURRENT_USER

HKEY_LOCAL_MACHINE

HKEY_USERS

HKEY_CURRENT_CONFIG

[Execute]

KeyDelBackspace

.html

XtremeKeylogger

Software\Microsoft\Windows\CurrentVersion\Run

.functions

icon=shell32.dll,4

shellexecute=

autorun.inf

\Microsoft\Windows\

ÞFAULTBROWSER%

svchost.exe

ah-antihacker.ddns.net

{W85FPND1-LO20-F66I-3B80-VFA1L3EKVP7B}

HKCU\Software\Microsoft\Windows\CurrentVersion\Run

dns.net

392.168.0.1:1900

ÞFAlmx8pleQ0FRNPtPERSIST

UPnP.UP

PTF.ftpserver.com

ftpuser

iexplore.exe_3804:

.text

`.data

.rsrc

@.reloc

>.uzf

.us;}

IEFRAME.dll

MLANG.dll

iertutil.dll

urlmon.dll

ole32.dll

SHELL32.dll

SHLWAPI.dll

msvcrt.dll

USER32.dll

KERNEL32.dll

ADVAPI32.dll

RegOpenKeyExW

RegCloseKey

GetWindowsDirectoryW

_amsg_exit

_wcmdln

UrlApplySchemeW

PathIsURLW

UrlCanonicalizeW

UrlCreateFromPathW

iexplore.pdb

KEYW

KEYWh

KEYWD

.ENNNG.

a.ry.v

l.igM4

?1%SGf

xh.JW^

.97777"7" " " !

3.... ))

8888888888888

8888888888

.lPV)

úW1

.ApX/

H.ZAf

ð[U

%s!FK

1YYYY1YY9GEAA=77YRNNNW:.VT1

888777777

Y.hilkRROMLK=C,

..(((($$

3...((((%

3....(.''$

3.2...((((%

33.2....(,'

55323222...

(%&'00443445?

00.,,,4(

000.,,9(

0020..9(

003200;(

(#'( (''''!'!

Microsoft.InternetExplorer.Default

user32.dll

Kernel32.DLL

xfire.exe

wlmail.exe

winamp.exe

waol.exe

sidebar.exe

psocdesigner.exe

np.exe

netscape.exe

netcaptor.exe

neoplanet.exe

msn.exe

mshtmpad.exe

mshta.exe

loader42.exe

infopath.exe

iexplore.exe

iepreview.exe

groove.exe

explorer.exe

dreamweaver.exe

contribute.exe

aol.exe

{28fb17e0-d393-439d-9a21-9474a070473a}

Software\Policies\Microsoft\Windows\CurrentVersion\Internet Settings

DShell32.dll

Software\Microsoft\Windows NT\CurrentVersion\Image File Execution Options\iexplore.exe

Software\Microsoft\Active Setup\Installed Components\>{26923b43-4d38-484f-9b9e-de460746276c}

"%s" %s

Kernel32.dll

\AppPatch\sysmain.sdb

-extoff go.microsoft.com/fwlink/?LinkId=106323

-extoff go.microsoft.com/fwlink/?LinkId=106322

-extoff go.microsoft.com/fwlink/?LinkId=106320

kernel32.dll

{00000000-0000-0000-0000-000000000000}

\\?\Volume

shell:%s

Imaging_CreateWebPagePreview_Perftrack

Browseui_Tabs_Tearoff_BetweenWindows

Frame_URLEntered

Imaging_CreateWebPagePreview

WS_ExecuteQuery

Shdocvw_BaseBrowser_FireEvent_WindowStateChanged

IdleTask_Execution_Time

9.00.8112.16421 (WIN7_IE9_RTM.110308-0330)

IEXPLORE.EXE

Windows

9.00.8112.16421

iexplore.exe_3804_rwx_10000000_0004D000:

`.rsrc

ServerKeyloggerU

789:;

%SERVER%

URLMON.DLL

shell32.dll

hXXp://

advapi32.dll

kernel32.dll

mpr.dll

version.dll

comctl32.dll

gdi32.dll

opengl32.dll

user32.dll

wintrust.dll

msimg32.dll

juXqhu2.iu

KWindows

TServerKeylogger

GetWindowsDirectoryW

RegOpenKeyExW

RegCreateKeyW

RegCloseKey

RegOpenKeyExA

FindExecutableW

ShellExecuteW

SHDeleteKeyW

URLDownloadToCacheFileW

UnhookWindowsHookEx

SetWindowsHookExW

MapVirtualKeyW

GetKeyboardLayout

GetKeyState

GetKeyboardType

GetKeyboardState

FtpPutFileW

FtpSetCurrentDirectoryW

.idata

.rdata

P.reloc

P.rsrc

URLDb

KERNEL32.DLL

ntdll.dll

oleaut32.dll

shlwapi.dll

wininet.dll

x.html

HKEY_CLASSES_ROOT

HKEY_CURRENT_USER

HKEY_LOCAL_MACHINE

HKEY_USERS

HKEY_CURRENT_CONFIG

[Execute]

KeyDelBackspace

.html

XtremeKeylogger

Software\Microsoft\Windows\CurrentVersion\Run

.functions

icon=shell32.dll,4

shellexecute=

autorun.inf

\Microsoft\Windows\

ÞFAULTBROWSER%

svchost.exe

ah-antihacker.ddns.net

{W85FPND1-LO20-F66I-3B80-VFA1L3EKVP7B}

HKCU\Software\Microsoft\Windows\CurrentVersion\Run

dns.net

392.168.0.1:1900

ÞFAlmx8pleQ0FRNPtPERSIST

UPnP.UP

PTF.ftpserver.com

ftpuser

C:\Users\"%CurrentUserName%"\AppData\Local\Temp\.exe

%Program Files%\Internet Explorer\iexplore.exe