Trojan.Win32.Qhost.atmk (Kaspersky), Gen:Variant.Kazy.212807 (B) (Emsisoft), Gen:Variant.Kazy.212807 (AdAware), Backdoor.Win32.Farfli.FD, 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: 9c1f962f88d4b8e53e0c20b664e37c0a
SHA1: 0750bec119f6b77766164eb3dfd5ecab16cd754b
SHA256: 1d44f73037adf1a0b45b0942d2df143b9ea02c146f5c175828e69da258baf8b5
SSDeep: 3072:asERAkU4EkHc3VwqDkUi H5CNNYn8uOYvYAXrRt8x6o7PivriFAACZb BGObbEy:asERAk9HKYUi H5ye8fY2TC
Size: 216064 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6
Company: no certificate found
Created at: 2014-06-05 16:26:11
Analyzed on: WindowsXP SP3 32-bit
Summary: Backdoor. Malware that enables a remote control of victim's machine.
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 Backdoor's file once a user opens a drive's folder in Windows Explorer. |
Process activity
The Backdoor creates the following process(es):
%original file name%.exe:1272
%original file name%.exe:440
The Backdoor injects its code into the following process(es):
svchost.exe:184
iexplore.exe:1176
File activity
The process %original file name%.exe:1272 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Application DataMicrosoft\System\Services\18.exe (1281 bytes)
%WinDir%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new (724 bytes)
%WinDir%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new (724 bytes)
%System%\drivers\etc\hosts (421 bytes)
The process %original file name%.exe:440 makes changes in the file system.
The Backdoor deletes the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\x.html (0 bytes)
Registry activity
The process %original file name%.exe:1272 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "6F FA 21 E9 26 9E 76 04 A1 2B E3 1D 8C 03 AD A3"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
To automatically run itself each time Windows is booted, the Backdoor adds the following link to its file to the system registry autorun key:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"18.exe" = "%Documents and Settings%\%current user%\Application DataMicrosoft\System\Services\18.exe"
The process %original file name%.exe:440 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "8B 9D 26 A8 19 FA 0E 8E 30 58 6A C1 1A 3F 4D 42"
[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" = "--((Mutex))--"
Dropped PE files
There are no dropped PE files.
HOSTS file anomalies
The Backdoor modifies "%System%\drivers\etc\hosts" file which is used to translate DNS entries to IP addresses. The modified file is 421 bytes in size. The following strings are added to the hosts file listed below:
virscan.org | |
virustotal.com | |
virusscan.jotti.org | |
vscan.novirusthanks.org | |
free.avg.com | |
avg.com | |
norton.com | |
www.norton.com | |
avast.com | |
trendmicro.com | |
pctools.com | |
kaskersky.com | |
www.kaspersky.com | |
bullguard.com | |
secunia.com | |
community.norton.com | |
av-comparatives.org | |
computerhope.com | |
nl.clamwin.com | |
clamwin.com | |
mac-forums.com | |
mcafee.com | |
barracudanetworks.com | |
stopzilla.com | |
free-av.com | |
symantec.com | |
eset.com |
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 Backdoor'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:1272
%original file name%.exe:440 - Delete the original Backdoor file.
- Delete or disinfect the following files created/modified by the Backdoor:
%Documents and Settings%\%current user%\Application DataMicrosoft\System\Services\18.exe (1281 bytes)
%WinDir%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new (724 bytes)
%WinDir%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new (724 bytes)
%System%\drivers\etc\hosts (421 bytes) - Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"18.exe" = "%Documents and Settings%\%current user%\Application DataMicrosoft\System\Services\18.exe" - Restore the original content of the HOSTS file (%System%\drivers\etc\hosts): 127.0.0.1 localhost
- 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:
Product Name:
Product Version: 0.0.0.0
Legal Copyright:
Legal Trademarks:
Original Filename: 0be1i0ey.exe
Internal Name: 0be1i0ey.exe
File Version: 0.0.0.0
File Description:
Comments:
Language: Language Neutral
Company Name: Product Name: Product Version: 0.0.0.0Legal Copyright: Legal Trademarks: Original Filename: 0be1i0ey.exeInternal Name: 0be1i0ey.exeFile Version: 0.0.0.0File Description: Comments: Language: Language Neutral
PE Sections
Name | Virtual Address | Virtual Size | Raw Size | Entropy | Section MD5 |
---|---|---|---|---|---|
.text | 8192 | 112324 | 112640 | 5.22846 | 604fcbdf043802854483733ade60a6a9 |
.rsrc | 122880 | 102400 | 102400 | 3.36797 | c8e3e86647bf46061f39e34374106678 |
.reloc | 229376 | 12 | 512 | 0.070639 | 0a7abd25026cbe7a63a32289923ebe7d |
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 Backdoor connects to the servers at the folowing location(s):
Strings from Dumps
svchost.exe_184:
.text
.text
`.data
`.data
.rsrc
.rsrc
ADVAPI32.dll
ADVAPI32.dll
KERNEL32.dll
KERNEL32.dll
NTDLL.DLL
NTDLL.DLL
RPCRT4.dll
RPCRT4.dll
NETAPI32.dll
NETAPI32.dll
ole32.dll
ole32.dll
ntdll.dll
ntdll.dll
RegCloseKey
RegCloseKey
RegOpenKeyExW
RegOpenKeyExW
GetProcessHeap
GetProcessHeap
NtOpenKey
NtOpenKey
svchost.pdb
svchost.pdb
\PIPE\
\PIPE\
Software\Microsoft\Windows NT\CurrentVersion\Svchost
Software\Microsoft\Windows NT\CurrentVersion\Svchost
\Registry\Machine\System\CurrentControlSet\Control\SecurePipeServers\
\Registry\Machine\System\CurrentControlSet\Control\SecurePipeServers\
5.1.2600.5512 (xpsp.080413-2111)
5.1.2600.5512 (xpsp.080413-2111)
svchost.exe
svchost.exe
Windows
Windows
Operating System
Operating System
5.1.2600.5512
5.1.2600.5512
svchost.exe_184_rwx_10000000_0004A000:
.idata
.idata
.rdata
.rdata
P.reloc
P.reloc
P.rsrc
P.rsrc
ServerKeyloggerU
ServerKeyloggerU
789:;<&'()* ,-./12345
789:;<&'()* ,-./12345
%SERVER%
%SERVER%
URLMON.DLL
URLMON.DLL
shell32.dll
shell32.dll
http://
http://
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
GetKeyboardType
GetKeyboardType
RegOpenKeyExA
RegOpenKeyExA
RegCloseKey
RegCloseKey
oleaut32.dll
oleaut32.dll
RegOpenKeyExW
RegOpenKeyExW
RegCreateKeyW
RegCreateKeyW
GetWindowsDirectoryW
GetWindowsDirectoryW
UnhookWindowsHookEx
UnhookWindowsHookEx
SetWindowsHookExW
SetWindowsHookExW
MapVirtualKeyW
MapVirtualKeyW
GetKeyboardLayout
GetKeyboardLayout
GetKeyState
GetKeyState
shlwapi.dll
shlwapi.dll
SHDeleteKeyW
SHDeleteKeyW
FindExecutableW
FindExecutableW
URLDownloadToCacheFileW
URLDownloadToCacheFileW
wininet.dll
wininet.dll
FtpPutFileW
FtpPutFileW
FtpSetCurrentDirectoryW
FtpSetCurrentDirectoryW
GetKeyboardState
GetKeyboardState
ShellExecuteW
ShellExecuteW
ntdll.dll
ntdll.dll
1 1$1(1,10141
1 1$1(1,10141
KWindows
KWindows
TServerKeylogger
TServerKeylogger
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
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
.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
hack29dz.no-ip.biz
hack29dz.no-ip.biz
castra.exe
castra.exe
C:\Windows\resources\040c
C:\Windows\resources\040c
{4EDA76E2-L5SW-M831-7M3H-6L62HA1N282U}
{4EDA76E2-L5SW-M831-7M3H-6L62HA1N282U}
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
C:\HKCU
C:\HKCU
Êstra%
Êstra%
Microsoft\Windows\Start Men
Microsoft\Windows\Start Men
ftp.ftpserver.com
ftp.ftpserver.com
ftpuser
ftpuser
iexplore.exe_1176:
%?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_1176_rwx_10000000_0004A000:
.idata
.idata
.rdata
.rdata
P.reloc
P.reloc
P.rsrc
P.rsrc
ServerKeyloggerU
ServerKeyloggerU
789:;<&'()* ,-./12345
789:;<&'()* ,-./12345
%SERVER%
%SERVER%
URLMON.DLL
URLMON.DLL
shell32.dll
shell32.dll
http://
http://
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
GetKeyboardType
GetKeyboardType
RegOpenKeyExA
RegOpenKeyExA
RegCloseKey
RegCloseKey
oleaut32.dll
oleaut32.dll
RegOpenKeyExW
RegOpenKeyExW
RegCreateKeyW
RegCreateKeyW
GetWindowsDirectoryW
GetWindowsDirectoryW
UnhookWindowsHookEx
UnhookWindowsHookEx
SetWindowsHookExW
SetWindowsHookExW
MapVirtualKeyW
MapVirtualKeyW
GetKeyboardLayout
GetKeyboardLayout
GetKeyState
GetKeyState
shlwapi.dll
shlwapi.dll
SHDeleteKeyW
SHDeleteKeyW
FindExecutableW
FindExecutableW
URLDownloadToCacheFileW
URLDownloadToCacheFileW
wininet.dll
wininet.dll
FtpPutFileW
FtpPutFileW
FtpSetCurrentDirectoryW
FtpSetCurrentDirectoryW
GetKeyboardState
GetKeyboardState
ShellExecuteW
ShellExecuteW
ntdll.dll
ntdll.dll
1 1$1(1,10141
1 1$1(1,10141
KWindows
KWindows
TServerKeylogger
TServerKeylogger
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
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8" />
.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
hack29dz.no-ip.biz
hack29dz.no-ip.biz
castra.exe
castra.exe
C:\Windows\resources\040c
C:\Windows\resources\040c
{4EDA76E2-L5SW-M831-7M3H-6L62HA1N282U}
{4EDA76E2-L5SW-M831-7M3H-6L62HA1N282U}
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
C:\HKCU
C:\HKCU
Êstra%
Êstra%
Microsoft\Windows\Start Men
Microsoft\Windows\Start Men
ftp.ftpserver.com
ftp.ftpserver.com
ftpuser
ftpuser
c:\%original file name%.exe
c:\%original file name%.exe
%Program Files%\Internet Explorer\iexplore.exe
%Program Files%\Internet Explorer\iexplore.exe