AIT.Trojan.Autoit.CGW_b21af022ec
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.
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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).
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.
VersionInfo
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:
URLs
No activity has been detected.
IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)
Traffic
Web Traffic was not found.
The AIT connects to the servers at the folowing location(s):
.text
`.data
.rsrc
ADVAPI32.dll
KERNEL32.dll
NTDLL.DLL
RPCRT4.dll
NETAPI32.dll
ole32.dll
ntdll.dll
RegCloseKey
RegOpenKeyExW
GetProcessHeap
NtOpenKey
svchost.pdb
\PIPE\
Software\Microsoft\Windows NT\CurrentVersion\Svchost
\Registry\Machine\System\CurrentControlSet\Control\SecurePipeServers\
5.1.2600.5512 (xpsp.080413-2111)
svchost.exe
Windows
Operating System
5.1.2600.5512
svchost.exe_312_rwx_10000000_0007E000:
`.rsrc
ServerKeyloggerU
789:;<&'()* ,-./12345
%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
L:.TzgW
KWindows
TServerKeylogger
GetWindowsDirectoryW
RegOpenKeyExA
RegCloseKey
RegOpenKeyExW
RegCreateKeyW
FindExecutableW
ShellExecuteW
SHDeleteKeyW
URLDownloadToCacheFileW
UnhookWindowsHookEx
SetWindowsHookExW
MapVirtualKeyW
GetKeyboardLayout
GetKeyState
GetKeyboardType
GetKeyboardState
FtpPutFileW
FtpSetCurrentDirectoryW
.idata
.rdata
P.reloc
P.rsrc
%sodByt@
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
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
.html
XtremeKeylogger
Software\Microsoft\Windows\CurrentVersion\Run
.functions
icon=shell32.dll,4
shellexecute=
autorun.inf
\Microsoft\Windows
\Microsoft\Windows\
ÞFAULTBROWSER%
svchost.exe
aha76.onthewifi.com
ftpuser
ittorrent.ico
calc.exe
{8051J20P-0P62-F4N2-3WSJ-N81L00FQ0XMS}HKCU\Software\Microsoft\Windows\CurrentVersion\Run
S2.8.3
2.nls
F:\DARK\DarkComet
2.dll
PTF.ftpserver.com
emulefold.ico
calc.exe_476:
.text
`.data
.rsrc
SHELL32.dll
msvcrt.dll
ADVAPI32.dll
KERNEL32.dll
GDI32.dll
USER32.dll
hhctrl.ocx
CLSID\{ADB880A6-D8FF-11CF-9377-00AA003B7A11}\InprocServer32calc.pdb
j.OXO
_acmdln
RegCloseKey
RegOpenKeyExA
name="Microsoft.Windows.Shell.calc"
version="5.1.0.0"
<description>Windows Shell</description>
name="Microsoft.Windows.Common-Controls"
version="6.0.0.0"
publicKeyToken="6595b64144ccf1df"
CalcMsgPumpWnd
The requested operation may take a very long time to complete.
Do you want to let the calculation continue, or stop the operation now?
Windows Calculator application file
5.1.2600.0 (xpclient.010817-1148)
CALC.EXE
Windows
Operating System
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.
Do you want to abort the operation now?
calc.hlp
Cannot open Clipboard.TThere is not enough memory for data.
calc.chm
calc.exe_476_rwx_10000000_0007E000:
`.rsrc
ServerKeyloggerU
789:;<&'()* ,-./12345
%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
L:.TzgW
KWindows
TServerKeylogger
GetWindowsDirectoryW
RegOpenKeyExA
RegCloseKey
RegOpenKeyExW
RegCreateKeyW
FindExecutableW
ShellExecuteW
SHDeleteKeyW
URLDownloadToCacheFileW
UnhookWindowsHookEx
SetWindowsHookExW
MapVirtualKeyW
GetKeyboardLayout
GetKeyState
GetKeyboardType
GetKeyboardState
FtpPutFileW
FtpSetCurrentDirectoryW
.idata
.rdata
P.reloc
P.rsrc
%sodByt@
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
<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
.html
XtremeKeylogger
Software\Microsoft\Windows\CurrentVersion\Run
.functions
icon=shell32.dll,4
shellexecute=
autorun.inf
\Microsoft\Windows
\Microsoft\Windows\
ÞFAULTBROWSER%
svchost.exe
aha76.onthewifi.com
ftpuser
ittorrent.ico
calc.exe
{8051J20P-0P62-F4N2-3WSJ-N81L00FQ0XMS}HKCU\Software\Microsoft\Windows\CurrentVersion\Run
S2.8.3
2.nls
F:\DARK\DarkComet
2.dll
PTF.ftpserver.com
emulefold.ico
c:\%original file name%.exe
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.
*Manual removal may cause unexpected system behaviour and should be performed at your own risk.
