Trojan.Win32.Xtrat.vjn (Kaspersky), AIT:Trojan.Autoit.CGW (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: b21af022ec3112e17579ddb624c6ee1c
SHA1: 9734787a6f540f551607092e028f7a7df67d4e90
SHA256: 33b9a53a4e783cbd91161e13f3e8efc575695541d6d10b03b57a9e56b20ffb9f
SSDeep: 12288:DcJkcAWoVBMRLuDHt9pH4qjgFz9H2QqT SWYOjNaPf:STr OpuDHUF5Hp3SWYO
Size: 642560 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: PackerUPXCompresorGratuitowwwupxsourceforgenet, UPolyXv05_v6
Company: no certificate found
Created at: 2015-03-19 20:10:32
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 AIT's file once a user opens a drive's folder in Windows Explorer. |
Process activity
The AIT creates the following process(es):
%original file name%.exe:1832
%original file name%.exe:304
The AIT injects its code into the following process(es):
calc.exe:476
svchost.exe:312
Mutexes
The following mutexes were created/opened:No objects were found.
File activity
The process calc.exe:476 makes changes in the file system.
The AIT creates and/or writes to the following file(s):
C:\temps\svchost.exe (4185 bytes)
The AIT deletes the following file(s):
C:\%original file name%.exe (0 bytes)
Registry activity
The process calc.exe:476 makes changes in the system registry.
The AIT 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 28 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"
[HKCU\Software\qwerty123456]
"ServerName" = "C:\temps\svchost.exe"
[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\{8051J20P-0P62-F4N2-3WSJ-N81L00FQ0XMS}]
"StubPath" = "C:\temps\svchost.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"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "7A C4 4C AA 9B 97 46 46 11 7C B2 67 C6 D7 4D 8C"
[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"
[HKCU\Software\qwerty123456]
"ServerStarted" = "20/05/2015 07:36:14"
[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 AIT 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"
Proxy settings are disabled:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"
To automatically run itself each time Windows is booted, the AIT adds the following link to its file to the system registry autorun key:
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"HKLM" = "C:\temps\svchost.exe"
The AIT 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 AIT 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 AIT adds the following link to its file to the system registry autorun key:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"HKCU" = "C:\temps\svchost.exe"
The AIT deletes the following value(s) in system registry:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"AutoConfigURL"
"ProxyServer"
"ProxyOverride"
The process %original file name%.exe:1832 makes changes in the system registry.
The AIT creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "04 4F FC 42 45 80 B7 FF 55 AB EB 7A F6 C0 EE 70"
The process %original file name%.exe:304 makes changes in the system registry.
The AIT creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "73 46 AA 7B BB 27 2D 0A EC 8B 66 BA A6 F1 1B 19"
[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" = "qwerty123456"
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 AIT'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:1832
%original file name%.exe:304 - Delete the original AIT file.
- Delete or disinfect the following files created/modified by the AIT:
C:\temps\svchost.exe (4185 bytes)
- Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"HKLM" = "C:\temps\svchost.exe"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"HKCU" = "C:\temps\svchost.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
Company Name:
Product Name:
Product Version:
Legal Copyright:
Legal Trademarks:
Original Filename:
Internal Name:
File Version:
File Description:
Comments:
Language: English (United States)
Company Name: Product Name: Product Version: Legal Copyright: Legal Trademarks: Original Filename: Internal Name: File Version: File Description: Comments: Language: English (United States)
PE Sections
Name | Virtual Address | Virtual Size | Raw Size | Entropy | Section MD5 |
---|---|---|---|---|---|
UPX0 | 4096 | 827392 | 0 | 0 | d41d8cd98f00b204e9800998ecf8427e |
UPX1 | 831488 | 344064 | 342528 | 5.50114 | 2fcc962432083f0ffd56d4205456b375 |
.rsrc | 1175552 | 299008 | 299008 | 5.42397 | c47b9e8b024838d355ef88648221d04e |
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 AIT connects to the servers at the folowing location(s):
Strings from Dumps
svchost.exe_312:
.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_312_rwx_10000000_0007E000:
`.rsrc
`.rsrc
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
L:.TzgW
L:.TzgW
KWindows
KWindows
TServerKeylogger
TServerKeylogger
GetWindowsDirectoryW
GetWindowsDirectoryW
RegOpenKeyExA
RegOpenKeyExA
RegCloseKey
RegCloseKey
RegOpenKeyExW
RegOpenKeyExW
RegCreateKeyW
RegCreateKeyW
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
%sodByt@
%sodByt@
KERNEL32.DLL
KERNEL32.DLL
ntdll.dll
ntdll.dll
oleaut32.dll
oleaut32.dll
shlwapi.dll
shlwapi.dll
wininet.dll
wininet.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
\Microsoft\Windows\
\Microsoft\Windows\
ÞFAULTBROWSER%
ÞFAULTBROWSER%
svchost.exe
svchost.exe
aha76.onthewifi.com
aha76.onthewifi.com
ftpuser
ftpuser
ittorrent.ico
ittorrent.ico
calc.exe
calc.exe
{8051J20P-0P62-F4N2-3WSJ-N81L00FQ0XMS}
{8051J20P-0P62-F4N2-3WSJ-N81L00FQ0XMS}
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
S2.8.3
S2.8.3
2.nls
2.nls
F:\DARK\DarkComet
F:\DARK\DarkComet
2.dll
2.dll
PTF.ftpserver.com
PTF.ftpserver.com
emulefold.ico
emulefold.ico
calc.exe_476:
.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"
Windows Shell
Windows Shell
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_476_rwx_10000000_0007E000:
`.rsrc
`.rsrc
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
L:.TzgW
L:.TzgW
KWindows
KWindows
TServerKeylogger
TServerKeylogger
GetWindowsDirectoryW
GetWindowsDirectoryW
RegOpenKeyExA
RegOpenKeyExA
RegCloseKey
RegCloseKey
RegOpenKeyExW
RegOpenKeyExW
RegCreateKeyW
RegCreateKeyW
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
%sodByt@
%sodByt@
KERNEL32.DLL
KERNEL32.DLL
ntdll.dll
ntdll.dll
oleaut32.dll
oleaut32.dll
shlwapi.dll
shlwapi.dll
wininet.dll
wininet.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
\Microsoft\Windows\
\Microsoft\Windows\
ÞFAULTBROWSER%
ÞFAULTBROWSER%
svchost.exe
svchost.exe
aha76.onthewifi.com
aha76.onthewifi.com
ftpuser
ftpuser
ittorrent.ico
ittorrent.ico
calc.exe
calc.exe
{8051J20P-0P62-F4N2-3WSJ-N81L00FQ0XMS}
{8051J20P-0P62-F4N2-3WSJ-N81L00FQ0XMS}
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
S2.8.3
S2.8.3
2.nls
2.nls
F:\DARK\DarkComet
F:\DARK\DarkComet
2.dll
2.dll
PTF.ftpserver.com
PTF.ftpserver.com
emulefold.ico
emulefold.ico
c:\%original file name%.exe
c:\%original file name%.exe