Gen:Variant.Barys.54096 (BitDefender), HEUR:Trojan.Win32.Generic (Kaspersky), Heur.AdvML.B (Symantec), Trojan.MSIL.Injector (Ikarus), Gen:Variant.Barys.54096 (FSecure), Gen:Variant.Barys.54096 (AdAware), Backdoor.Win32.Xtrat.FD, Trojan.Win32.IEDummy.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
MD5: fa650ce84aa339efdf4e2b56be4150e2
SHA1: 36f6ae5cc55f0f3c0b56281272295c94b99cf1bf
SHA256: 29089a290b51a3fd442fa4d1cd71fc8c29d3cc90da6fc5bfd87b5b2e9b06f55d
SSDeep: 6144:3lOCH282PMplVxicqbrvsy3MeSX8ovaChpRE0t6kCcQ8z6Z39:3IC9xNTqbzN3MtVnhTE
Size: 247296 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6
Company: no certificate found
Created at: 2016-07-22 01:38:02
Analyzed on: WindowsXP SP3 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:472
%original file name%.exe:1564
fa650ce84aa339efdf4e2b56be4150e2Srv.exe:412
The Trojan injects its code into the following process(es):
iexplore.exe:252
iexplore.exe:1296
Mutexes
The following mutexes were created/opened:No objects were found.
File activity
The process %original file name%.exe:472 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
C:\fa650ce84aa339efdf4e2b56be4150e2Srv.exe (56 bytes)
The Trojan deletes the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\x.html (0 bytes)
The process fa650ce84aa339efdf4e2b56be4150e2Srv.exe:412 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%Program Files%\Microsoft\DesktopLayer.exe (56 bytes)
The Trojan deletes the following file(s):
%Program Files%\Microsoft\px1.tmp (0 bytes)
Registry activity
The process %original file name%.exe:472 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "99 BC 51 19 9D 1A 19 16 1D E1 AB A5 F0 3E BA A6"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\XtremeRAT]
"Mutex" = "8c7ePBCyH5m"
The process %original file name%.exe:1564 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "9B 87 AB 1B EE DA 47 1D 92 8D 38 D0 4C 6B C0 6B"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
Dropped PE files
MD5 | File path |
---|---|
7e4501deb46e6607fa6de10942ec0d32 | c:\fa650ce84aa339efdf4e2b56be4150e2Srv.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:472
%original file name%.exe:1564
fa650ce84aa339efdf4e2b56be4150e2Srv.exe:412 - Delete the original Trojan file.
- Delete or disinfect the following files created/modified by the Trojan:
C:\fa650ce84aa339efdf4e2b56be4150e2Srv.exe (56 bytes)
%Program Files%\Microsoft\DesktopLayer.exe (56 bytes) - Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
- Reboot the computer.
Static Analysis
VersionInfo
Company Name: aEQYy7TB54DQT
Product Name: a5B7gcO6ZO8FMYY1
Product Version: 11.14.18.73
Legal Copyright: Copyright (c) 2011
Legal Trademarks: a1VgvLpKuUXUR7KGoC
Original Filename: ff.exe
Internal Name: ff.exe
File Version: 11.14.18.73
File Description: a71NRShqdIW
Comments:
Language: English (United States)
Company Name: aEQYy7TB54DQTProduct Name: a5B7gcO6ZO8FMYY1Product Version: 11.14.18.73Legal Copyright: Copyright (c) 2011Legal Trademarks: a1VgvLpKuUXUR7KGoCOriginal Filename: ff.exeInternal Name: ff.exeFile Version: 11.14.18.73File Description: a71NRShqdIWComments: Language: English (United States)
PE Sections
Name | Virtual Address | Virtual Size | Raw Size | Entropy | Section MD5 |
---|---|---|---|---|---|
.text | 8192 | 244148 | 244224 | 4.98903 | cd1d11846c1692618fcbef5b83b1a928 |
.rsrc | 253952 | 2048 | 2048 | 2.42268 | aee8837d00e0d0cec79f8b3beb2c9c2c |
.reloc | 262144 | 12 | 512 | 0.070639 | 6e70f91eee3779cf3266838ba4cfe6dc |
Dropped from:
Downloaded by:
Similar by SSDeep:
Similar by Lavasoft Polymorphic Checker:
Network Activity
URLs
IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)
Traffic
Map
The Trojan connects to the servers at the folowing location(s):
Strings from Dumps
iexplore.exe_252:
%?9-*09,*19}*09
%?9-*09,*19}*09
.text
.text
`.data
`.data
.rsrc
.rsrc
msvcrt.dll
msvcrt.dll
KERNEL32.dll
KERNEL32.dll
NTDLL.DLL
NTDLL.DLL
USER32.dll
USER32.dll
SHLWAPI.dll
SHLWAPI.dll
SHDOCVW.dll
SHDOCVW.dll
Software\Microsoft\Windows\CurrentVersion\Explorer\BrowseNewProcess
Software\Microsoft\Windows\CurrentVersion\Explorer\BrowseNewProcess
IE-X-X
IE-X-X
rsabase.dll
rsabase.dll
System\CurrentControlSet\Control\Windows
System\CurrentControlSet\Control\Windows
dw15 -x -s %u
dw15 -x -s %u
watson.microsoft.com
watson.microsoft.com
IEWatsonURL
IEWatsonURL
%s -h %u
%s -h %u
iedw.exe
iedw.exe
Iexplore.XPExceptionFilter
Iexplore.XPExceptionFilter
jscript.DLL
jscript.DLL
mshtml.dll
mshtml.dll
mlang.dll
mlang.dll
urlmon.dll
urlmon.dll
wininet.dll
wininet.dll
shdocvw.DLL
shdocvw.DLL
browseui.DLL
browseui.DLL
comctl32.DLL
comctl32.DLL
IEXPLORE.EXE
IEXPLORE.EXE
iexplore.pdb
iexplore.pdb
ADVAPI32.dll
ADVAPI32.dll
MsgWaitForMultipleObjects
MsgWaitForMultipleObjects
IExplorer.EXE
IExplorer.EXE
IIIIIB(II<.fg>
IIIIIB(II<.fg>
7?_____ZZSSH%
7?_____ZZSSH%
)z.UUUUUUUU
)z.UUUUUUUU
,....Qym
,....Qym
````2```
````2```
{.QLQIIIKGKGKGKGKGKG
{.QLQIIIKGKGKGKGKGKG
;33;33;0
;33;33;0
8888880
8888880
8887080
8887080
browseui.dll
browseui.dll
shdocvw.dll
shdocvw.dll
6.00.2900.5512 (xpsp.080413-2105)
6.00.2900.5512 (xpsp.080413-2105)
Windows
Windows
Operating System
Operating System
6.00.2900.5512
6.00.2900.5512
iexplore.exe_252_rwx_10000000_0005C000:
`.rsrc
`.rsrc
.rmnet
.rmnet
ServerKeyloggerU
ServerKeyloggerU
789:;
789:;
%SERVER%
%SERVER%
URLMON.DLL
URLMON.DLL
shell32.dll
shell32.dll
hXXp://
hXXp://
advapi32.dll
advapi32.dll
kernel32.dll
kernel32.dll
mpr.dll
mpr.dll
version.dll
version.dll
comctl32.dll
comctl32.dll
gdi32.dll
gdi32.dll
opengl32.dll
opengl32.dll
user32.dll
user32.dll
wintrust.dll
wintrust.dll
msimg32.dll
msimg32.dll
KWindows
KWindows
TServerKeylogger
TServerKeylogger
GetWindowsDirectoryW
GetWindowsDirectoryW
RegOpenKeyExW
RegOpenKeyExW
RegCreateKeyW
RegCreateKeyW
RegCloseKey
RegCloseKey
RegOpenKeyExA
RegOpenKeyExA
FindExecutableW
FindExecutableW
ShellExecuteW
ShellExecuteW
SHDeleteKeyW
SHDeleteKeyW
URLDownloadToCacheFileW
URLDownloadToCacheFileW
UnhookWindowsHookEx
UnhookWindowsHookEx
SetWindowsHookExW
SetWindowsHookExW
MapVirtualKeyW
MapVirtualKeyW
GetKeyboardLayout
GetKeyboardLayout
GetKeyState
GetKeyState
GetKeyboardType
GetKeyboardType
GetKeyboardState
GetKeyboardState
FtpPutFileW
FtpPutFileW
FtpSetCurrentDirectoryW
FtpSetCurrentDirectoryW
.idata
.idata
.rdata
.rdata
P.reloc
P.reloc
P.rsrc
P.rsrc
URLDb
URLDb
KERNEL32.DLL
KERNEL32.DLL
ntdll.dll
ntdll.dll
oleaut32.dll
oleaut32.dll
shlwapi.dll
shlwapi.dll
wininet.dll
wininet.dll
Srv.exe
Srv.exe
c:\fa650ce84aa339efdf4e2b56be4150e2Srv.exe
c:\fa650ce84aa339efdf4e2b56be4150e2Srv.exe
.rsrc
.rsrc
O.Cp}l
O.Cp}l
OO.sJD
OO.sJD
AM6d%X
AM6d%X
4ml%F
4ml%F
.pkrd
.pkrd
.DBxA
.DBxA
Xvi%2x
Xvi%2x
8KeysX
8KeysX
SHELL32.DLL
SHELL32.DLL
USER32.DLL
USER32.DLL
x.html
x.html
HKEY_CLASSES_ROOT
HKEY_CLASSES_ROOT
HKEY_CURRENT_USER
HKEY_CURRENT_USER
HKEY_LOCAL_MACHINE
HKEY_LOCAL_MACHINE
HKEY_USERS
HKEY_USERS
HKEY_CURRENT_CONFIG
HKEY_CURRENT_CONFIG
[Execute]
[Execute]
KeyDelBackspace
KeyDelBackspace
.html
.html
XtremeKeylogger
XtremeKeylogger
Software\Microsoft\Windows\CurrentVersion\Run
Software\Microsoft\Windows\CurrentVersion\Run
.functions
.functions
icon=shell32.dll,4
icon=shell32.dll,4
shellexecute=
shellexecute=
autorun.inf
autorun.inf
\Microsoft\Windows\
\Microsoft\Windows\
ÞFAULTBROWSER%
ÞFAULTBROWSER%
svchost.exe
svchost.exe
krarmmss43.ddns.net
krarmmss43.ddns.net
ftpuser
ftpuser
Server.exe
Server.exe
{KDOW42G6-W0XO-RV70-0TDG-5YGFTGTQA444}
{KDOW42G6-W0XO-RV70-0TDG-5YGFTGTQA444}
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
PTF.ftpserver.com
PTF.ftpserver.com
c:\%original file name%.exe
c:\%original file name%.exe
%Program Files%\Internet Explorer\iexplore.exe
%Program Files%\Internet Explorer\iexplore.exe
106.42.73.61
106.42.73.61
2528-6142
2528-6142
nedwp.exe
nedwp.exe
iexplore.exe_1296:
%?9-*09,*19}*09
%?9-*09,*19}*09
.text
.text
`.data
`.data
.rsrc
.rsrc
msvcrt.dll
msvcrt.dll
KERNEL32.dll
KERNEL32.dll
NTDLL.DLL
NTDLL.DLL
USER32.dll
USER32.dll
SHLWAPI.dll
SHLWAPI.dll
SHDOCVW.dll
SHDOCVW.dll
Software\Microsoft\Windows\CurrentVersion\Explorer\BrowseNewProcess
Software\Microsoft\Windows\CurrentVersion\Explorer\BrowseNewProcess
IE-X-X
IE-X-X
rsabase.dll
rsabase.dll
System\CurrentControlSet\Control\Windows
System\CurrentControlSet\Control\Windows
dw15 -x -s %u
dw15 -x -s %u
watson.microsoft.com
watson.microsoft.com
IEWatsonURL
IEWatsonURL
%s -h %u
%s -h %u
iedw.exe
iedw.exe
Iexplore.XPExceptionFilter
Iexplore.XPExceptionFilter
jscript.DLL
jscript.DLL
mshtml.dll
mshtml.dll
mlang.dll
mlang.dll
urlmon.dll
urlmon.dll
wininet.dll
wininet.dll
shdocvw.DLL
shdocvw.DLL
browseui.DLL
browseui.DLL
comctl32.DLL
comctl32.DLL
IEXPLORE.EXE
IEXPLORE.EXE
iexplore.pdb
iexplore.pdb
ADVAPI32.dll
ADVAPI32.dll
MsgWaitForMultipleObjects
MsgWaitForMultipleObjects
IExplorer.EXE
IExplorer.EXE
IIIIIB(II<.fg>
IIIIIB(II<.fg>
7?_____ZZSSH%
7?_____ZZSSH%
)z.UUUUUUUU
)z.UUUUUUUU
,....Qym
,....Qym
````2```
````2```
{.QLQIIIKGKGKGKGKGKG
{.QLQIIIKGKGKGKGKGKG
;33;33;0
;33;33;0
8888880
8888880
8887080
8887080
browseui.dll
browseui.dll
shdocvw.dll
shdocvw.dll
6.00.2900.5512 (xpsp.080413-2105)
6.00.2900.5512 (xpsp.080413-2105)
Windows
Windows
Operating System
Operating System
6.00.2900.5512
6.00.2900.5512
iexplore.exe_1296_rwx_00050000_00001000:
|%Program Files%\Microsoft\DesktopLayer.exe
|%Program Files%\Microsoft\DesktopLayer.exe
iexplore.exe_1296_rwx_20010000_00009000:
.text
.text
.rdata
.rdata
@.data
@.data
.reloc
.reloc
Srv.exe
Srv.exe
kernel32.dll
kernel32.dll