Backdoor.Win32.Farfli_8618a1144e
Trojan.Win32.VBKrypt.ewwt (Kaspersky), Trojan.Generic.6565640 (B) (Emsisoft), Trojan.Generic.6565640 (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.
MD5: 8618a1144e4445811e832882b0e241f8
SHA1: a9bdf8e2047cab8db1a2f74c5de4b3df87d0bef9
SHA256: cb592ae6531f70525cf6f76c00b07a9630c01a5e409c86b75fb3f0db03b1e1d1
SSDeep: 3072:4R0Jwc6M7Y1pguevIs5HNO6EE6YaO83pEACJTeQLVN/v0D2FX10ZvuD0B s:00PztJj7CJZZQLP/sUloSL
Size: 160256 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: PackerUPXCompresorGratuitowwwupxsourceforgenet, UPolyXv05_v6
Company: AirInstaller
Created at: 2011-08-17 11:20:52
Analyzed on: WindowsXP SP3 32-bit
Summary:
Backdoor. Malware that enables a remote control of victim's machine.
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:1780
The Backdoor injects its code into the following process(es):
%original file name%.exe:1868
svchost.exe:744
File activity
The process %original file name%.exe:1868 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Application Data\Microsoft\ctfmon..exe (673 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\Windows\MicrosoftUpdate.dat (314 bytes)
Registry activity
The process %original file name%.exe:1780 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "6C 60 C4 CB 77 CC F4 EF 6C 1B 59 AD FC CE A8 C4"
The process %original file name%.exe:1868 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKCU\Software\MicrosoftUpdate]
"ServerStarted" = "29/04/2014 12:21:15"
[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 12 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\XtremeRAT]
"Mutex" = "MicrosoftUpdate"
[HKCU\Software\MicrosoftUpdate]
"ServerName" = "%Documents and Settings%\%current user%\Application Data\Microsoft.\ctfmon..exe"
[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" = "1313569252"
[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"
[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" = "%original file name%.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" = "4B 91 F8 8E CB 59 EF A7 F7 80 B9 CA A5 0C CE 1E"
[HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{NM2MNO5I-5AE4-R2OV-MB02-M67E754QN4M6}]
"StubPath" = "%Documents and Settings%\%current user%\Application Data\Microsoft.\ctfmon..exe restart"
[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:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"ctfmon" = "%ctfmon%"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"HKLM" = "%Documents and Settings%\%current user%\Application Data\Microsoft.\ctfmon..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" = "%Documents and Settings%\%current user%\Application Data\Microsoft.\ctfmon..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"
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.
VersionInfo
Company Name: iol
Product Name: tooop
Product Version: 1.33.0666
Legal Copyright: fooop
Legal Trademarks:
Original Filename: looop.exe
Internal Name: looop
File Version: 1.33.0666
File Description: loooop
Comments: ldkjcfkfd
Language: English (United States)
PE Sections
| Name | Virtual Address | Virtual Size | Raw Size | Entropy | Section MD5 |
|---|---|---|---|---|---|
| 4096 | 589824 | 0 | 0 | d41d8cd98f00b204e9800998ecf8427e | |
| 593920 | 147456 | 147456 | 5.42759 | f42b412719ca945207244f010bda8d89 | |
| .rsrc | 741376 | 12288 | 11776 | 2.99089 | 1108d8680b9c841b9200e3511eb11a53 |
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.
.idata
.rdata
P.reloc
P.rsrc
ServerKeyloggerU
789:;<&'()* ,-./12345
%SERVER%
URLMON.DLL
shell32.dll
http://
advapi32.dll
kernel32.dll
mpr.dll
version.dll
comctl32.dll
gdi32.dll
opengl32.dll
user32.dll
wintrust.dll
msimg32.dll
GetKeyboardType
RegOpenKeyExA
RegCloseKey
oleaut32.dll
RegOpenKeyExW
RegCreateKeyW
GetWindowsDirectoryW
UnhookWindowsHookEx
SetWindowsHookExW
MapVirtualKeyW
GetKeyboardLayout
GetKeyState
shlwapi.dll
SHDeleteKeyW
FindExecutableW
URLDownloadToCacheFileW
wininet.dll
FtpPutFileW
FtpSetCurrentDirectoryW
GetKeyboardState
ShellExecuteW
ntdll.dll
1 1$1(1,10141
KWindows
TServerKeylogger
x.html
HKEY_CLASSES_ROOT
HKEY_CURRENT_USER
HKEY_LOCAL_MACHINE
HKEY_USERS
HKEY_CURRENT_CONFIG
[Execute]
KeyDelBackspace
.html
XtremeKeylogger
Software\Microsoft\Windows\CurrentVersion\Run
.functions
icon=shell32.dll,4
shellexecute=
autorun.inf
\Microsoft\Windows\
ÞFAULTBROWSER%
svchost.exe
thug-life.sytes.net
127.0.0.1
ctfmon..exe
%svchost%
fmon..exe2
Keyboard
thug-life.s{NM2MNO5I-5AE4-R2OV-MB02-M67E754QN4M6}HKCU\Software\Microsoft\Windows\CurrentVersion\Run
%ctfmon%
ftp.ftpserver.com
ftpuser
c:\%original file name%.exe
%original file name%.exe_1868_rwx_10000000_0004A000:
.idata
.rdata
P.reloc
P.rsrc
ServerKeyloggerU
789:;<&'()* ,-./12345
%SERVER%
URLMON.DLL
shell32.dll
http://
advapi32.dll
kernel32.dll
mpr.dll
version.dll
comctl32.dll
gdi32.dll
opengl32.dll
user32.dll
wintrust.dll
msimg32.dll
GetKeyboardType
RegOpenKeyExA
RegCloseKey
oleaut32.dll
RegOpenKeyExW
RegCreateKeyW
GetWindowsDirectoryW
UnhookWindowsHookEx
SetWindowsHookExW
MapVirtualKeyW
GetKeyboardLayout
GetKeyState
shlwapi.dll
SHDeleteKeyW
FindExecutableW
URLDownloadToCacheFileW
wininet.dll
FtpPutFileW
FtpSetCurrentDirectoryW
GetKeyboardState
ShellExecuteW
ntdll.dll
1 1$1(1,10141
KWindows
TServerKeylogger
x.html
HKEY_CLASSES_ROOT
HKEY_CURRENT_USER
HKEY_LOCAL_MACHINE
HKEY_USERS
HKEY_CURRENT_CONFIG
[Execute]
KeyDelBackspace
.html
XtremeKeylogger
Software\Microsoft\Windows\CurrentVersion\Run
.functions
icon=shell32.dll,4
shellexecute=
autorun.inf
\Microsoft\Windows\
ÞFAULTBROWSER%
svchost.exe
thug-life.sytes.net
127.0.0.1
ctfmon..exe
%svchost%
fmon..exe2
Keyboard
thug-life.s{NM2MNO5I-5AE4-R2OV-MB02-M67E754QN4M6}HKCU\Software\Microsoft\Windows\CurrentVersion\Run
%ctfmon%
ftp.ftpserver.com
ftpuser
c:\%original file name%.exe
svchost.exe_744:
.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_744_rwx_10000000_0004A000:
.idata
.rdata
P.reloc
P.rsrc
ServerKeyloggerU
789:;<&'()* ,-./12345
%SERVER%
URLMON.DLL
shell32.dll
http://
advapi32.dll
kernel32.dll
mpr.dll
version.dll
comctl32.dll
gdi32.dll
opengl32.dll
user32.dll
wintrust.dll
msimg32.dll
GetKeyboardType
RegOpenKeyExA
RegCloseKey
oleaut32.dll
RegOpenKeyExW
RegCreateKeyW
GetWindowsDirectoryW
UnhookWindowsHookEx
SetWindowsHookExW
MapVirtualKeyW
GetKeyboardLayout
GetKeyState
shlwapi.dll
SHDeleteKeyW
FindExecutableW
URLDownloadToCacheFileW
wininet.dll
FtpPutFileW
FtpSetCurrentDirectoryW
GetKeyboardState
ShellExecuteW
ntdll.dll
1 1$1(1,10141
KWindows
TServerKeylogger
x.html
HKEY_CLASSES_ROOT
HKEY_CURRENT_USER
HKEY_LOCAL_MACHINE
HKEY_USERS
HKEY_CURRENT_CONFIG
[Execute]
KeyDelBackspace
.html
XtremeKeylogger
Software\Microsoft\Windows\CurrentVersion\Run
.functions
icon=shell32.dll,4
shellexecute=
autorun.inf
\Microsoft\Windows\
ÞFAULTBROWSER%
svchost.exe
thug-life.sytes.net
127.0.0.1
ctfmon..exe
%svchost%
fmon..exe2
Keyboard
thug-life.s{NM2MNO5I-5AE4-R2OV-MB02-M67E754QN4M6}HKCU\Software\Microsoft\Windows\CurrentVersion\Run
%ctfmon%
ftp.ftpserver.com
ftpuser
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:1780
- Delete the original Backdoor file.
- Delete or disinfect the following files created/modified by the Backdoor:
%Documents and Settings%\%current user%\Application Data\Microsoft\ctfmon..exe (673 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\Windows\MicrosoftUpdate.dat (314 bytes) - Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"ctfmon" = "%ctfmon%"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"HKLM" = "%Documents and Settings%\%current user%\Application Data\Microsoft.\ctfmon..exe"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"HKCU" = "%Documents and Settings%\%current user%\Application Data\Microsoft.\ctfmon..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.
