HEUR:Trojan.Win32.Generic (Kaspersky), Gen:Variant.Kazy.279557 (B) (Emsisoft), Gen:Variant.Kazy.279514 (AdAware), Backdoor.Win32.Farfli.FD, 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
MD5: 02bca9cc18007957792c9aa35c7cec24
SHA1: dfc56e1d3531f50e67a02efe03e5bbf313d058e6
SHA256: 96008b19a98718cb75a92948ae3c1eb00083e55399a138c45aa8b78d687fc2ab
SSDeep: 3072:uxYGR0Pbb1aIlShV0jypg/jKMpY2MCsrOgzOfoFpg8KjNkn5Xtvixt:9FIpgeMY2MBrJifoE8KjNW5
Size: 281600 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6
Company: no certificate found
Created at: 2014-06-10 19:37:06
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:452
%original file name%.exe:996
The Backdoor injects its code into the following process(es):
calc.exe:1896
svchost.exe:1360
Mutexes
The following mutexes were created/opened:No objects were found.
File activity
The process calc.exe:1896 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):
%WinDir%\InstallDir\شادو ØÂزين.exe (1425 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\Windows\Ql76dPCT5zbE.dat (322 bytes)
Registry activity
The process calc.exe:1896 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Directory" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CacheLimit" = "65452"
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache4"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 14 00 00 00 01 00 00 00 00 00 00 00"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\%current user%\Cookies"
[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"ID" = "998081552"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{A4GEFBB2-ANQR-TV0C-RQ56-3C565U5EKB3A}]
"StubPath" = "%WinDir%\InstallDir\شادو ØÂزين.exe restart"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"Name" = "calc.exe"
[HKLM\System\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"
[HKCU\Software\Ql76dPCT5zbE]
"ServerName" = "%WinDir%\InstallDir\شادو ØÂزين.exe"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "AA AA CE CD 53 AE 68 F3 11 61 80 DD 37 1A 35 DA"
[HKCU\Software\Ql76dPCT5zbE]
"ServerStarted" = "03/07/2014 07:09:05"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache1"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CacheLimit" = "65452"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"MigrateProxy" = "1"
[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"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache3"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Paths" = "4"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"History" = "%Documents and Settings%\%current user%\Local Settings\History"
The Backdoor 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:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"UNCAsIntranet" = "1"
To automatically run itself each time Windows is booted, the Backdoor adds the following link to its file to the system registry autorun key:
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"HKLM" = "%WinDir%\InstallDir\شادو ØÂزين.exe"
The Backdoor modifies IE settings for security zones to map all urls to the Intranet Zone:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName" = "1"
The Backdoor modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:
"ProxyBypass" = "1"
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]
"HKCU" = "%WinDir%\InstallDir\شادو ØÂزين.exe"
Proxy settings are disabled:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"
The Backdoor deletes the following value(s) in system registry:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"AutoConfigURL"
"ProxyServer"
"ProxyOverride"
The process %original file name%.exe:452 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 59 64 A8 47 93 4D B1 E4 FE BA 59 24 02 B7 AC"
[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" = "Ql76dPCT5zbE"
The process %original file name%.exe:996 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "48 49 C3 AD FC D7 22 21 56 FF 94 1D 7D 20 2C B5"
[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"
Dropped PE files
There are no dropped PE files.
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 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:452
%original file name%.exe:996 - Delete the original Backdoor file.
- Delete or disinfect the following files created/modified by the Backdoor:
%WinDir%\InstallDir\شادو ØÂزين.exe (1425 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\Windows\Ql76dPCT5zbE.dat (322 bytes) - Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"HKLM" = "%WinDir%\InstallDir\شادو ØÂزين.exe"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"HKCU" = "%WinDir%\InstallDir\شادو ØÂزين.exe" - Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
- Reboot the computer.
Static Analysis
VersionInfo
No information is available.
No information is available.
PE Sections
Name | Virtual Address | Virtual Size | Raw Size | Entropy | Section MD5 |
---|---|---|---|---|---|
.text | 8192 | 276148 | 276480 | 4.04743 | 7ec466a15b18cdacc006a3317a716245 |
.rsrc | 286720 | 4096 | 4096 | 0 | 620f0b67a91f7f74151bc5be745b7110 |
.reloc | 294912 | 12 | 512 | 0.070639 | f815f7ff5b10ce6e520e562392340b41 |
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_1360:
.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_1360_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
shadow22.no-ip.biz
shadow22.no-ip.biz
calc.exe
calc.exe
{A4GEFBB2-ANQR-TV0C-RQ56-3C565U5EKB3A}
{A4GEFBB2-ANQR-TV0C-RQ56-3C565U5EKB3A}
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
ftpuser
ftpuser
ftp.ftpserver.com
ftp.ftpserver.com
calc.exe_1896:
.text
.text
`.data
`.data
.rsrc
.rsrc
SHELL32.dll
SHELL32.dll
msvcrt.dll
msvcrt.dll
ADVAPI32.dll
ADVAPI32.dll
KERNEL32.dll
KERNEL32.dll
GDI32.dll
GDI32.dll
USER32.dll
USER32.dll
hhctrl.ocx
hhctrl.ocx
CLSID\{ADB880A6-D8FF-11CF-9377-00AA003B7A11}\InprocServer32
CLSID\{ADB880A6-D8FF-11CF-9377-00AA003B7A11}\InprocServer32
calc.pdb
calc.pdb
j.OXO
j.OXO
_acmdln
_acmdln
RegCloseKey
RegCloseKey
RegOpenKeyExA
RegOpenKeyExA
name="Microsoft.Windows.Shell.calc"
name="Microsoft.Windows.Shell.calc"
version="5.1.0.0"
version="5.1.0.0"
<description>Windows Shell</description>
<description>Windows Shell</description>
name="Microsoft.Windows.Common-Controls"
name="Microsoft.Windows.Common-Controls"
version="6.0.0.0"
version="6.0.0.0"
publicKeyToken="6595b64144ccf1df"
publicKeyToken="6595b64144ccf1df"
CalcMsgPumpWnd
CalcMsgPumpWnd
The requested operation may take a very long time to complete.
The requested operation may take a very long time to complete.
Do you want to let the calculation continue, or stop the operation now?
Do you want to let the calculation continue, or stop the operation now?
Windows Calculator application file
Windows Calculator application file
5.1.2600.0 (xpclient.010817-1148)
5.1.2600.0 (xpclient.010817-1148)
CALC.EXE
CALC.EXE
Windows
Windows
Operating System
Operating System
5.1.2600.0
5.1.2600.0
Operation was canceled.-Calc does not have enough memory to continue.eThe requested function may take a very long time to complete.
Operation was canceled.-Calc does not have enough memory to continue.eThe requested function may take a very long time to complete.
Do you want to abort the operation now?
Do you want to abort the operation now?
calc.hlp
calc.hlp
Cannot open Clipboard.TThere is not enough memory for data.
Cannot open Clipboard.TThere is not enough memory for data.
calc.chm
calc.chm
calc.exe_1896_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
shadow22.no-ip.biz
shadow22.no-ip.biz
calc.exe
calc.exe
{A4GEFBB2-ANQR-TV0C-RQ56-3C565U5EKB3A}
{A4GEFBB2-ANQR-TV0C-RQ56-3C565U5EKB3A}
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
ftpuser
ftpuser
ftp.ftpserver.com
ftp.ftpserver.com
c:\%original file name%.exe
c:\%original file name%.exe