Backdoor.Win32.Farfli_7cc14ad170
Worm:Win32/Xtrat.B!A (Microsoft), HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Win32.Generic!BT (VIPRE), Artemis!7CC14AD17069 (McAfee), Suspicious.Cloud.9 (Symantec), Trojan.MSIL.MultiPacked (Ikarus), Crypt4.CEBB (AVG), Win32:Malware-gen (Avast), TROJ_GEN.R00XC0DI715 (TrendMicro), Backdoor.Win32.Farfli.FD, Backdoor.Win32.Xtrat.FD, Trojan.Win32.IEDummy.FD, GenericAutorunWorm.YR, GenericInjector.YR (Lavasoft MAS)
Behaviour: Trojan, Backdoor, Worm, Packed, WormAutorun, Malware
The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.
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MD5: 7cc14ad17069186ef668c47253509967
SHA1: e8e8e3ddf2e979ed60f367d71e79c2a407c86b63
SHA256: 236718d86b78013a4694114acbe12b7d52d59d15a66655d1cbc81b19e2bb5f86
SSDeep: 49152:O/ivCEPzFJu n1I2LZUuap/I1iPhGI7HVV6rDU83QWVLEMxW3uxGCu:O/ivHzFJryc 9m2r6XUMvVEuECu
Size: 3948032 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6
Company: no certificate found
Created at: 2015-09-02 15:25:53
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):
suLjyXabeeG6r3PMTNOF.exe:1480
%original file name%.exe:396
The Backdoor injects its code into the following process(es):
svchost.exe:544
iexplore.exe:1228
Mutexes
The following mutexes were created/opened:
No objects were found.
File activity
The process suLjyXabeeG6r3PMTNOF.exe:1480 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)
The process %original file name%.exe:396 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):
%WinDir%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new (10036 bytes)
%WinDir%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new (10036 bytes)
%WinDir%\suLjyXabeeG6r3PMTNOF.exe (33 bytes)
Registry activity
The process suLjyXabeeG6r3PMTNOF.exe:1480 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "A0 C6 AB 3C 52 77 E1 AC D7 A7 55 61 E5 BD 0A 24"
[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))--"
The process %original file name%.exe:396 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D8 FB DE CA 32 26 DA 9F B6 90 B6 48 FC 53 D7 8C"
[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\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Desktop" = "%Documents and Settings%\%current user%\Desktop"
[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"
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Desktop" = "%Documents and Settings%\All Users\Desktop"
[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"
"Personal" = "%Documents and Settings%\%current user%\My Documents"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%WinDir%]
"suLjyXabeeG6r3PMTNOF.exe" = "suLjyXabeeG6r3PMTNOF"
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"
The Backdoor modifies IE settings for security zones to map all urls to the Intranet Zone:
"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"
Dropped PE files
| MD5 | File path |
|---|---|
| f60755947f262f10fb4da99cb13dd94a | c:\WINDOWS\InstallDir\Server.exe |
| f60755947f262f10fb4da99cb13dd94a | c:\WINDOWS\suLjyXabeeG6r3PMTNOF.exe |
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:
Product Name:
Product Version: 0.0.0.0
Legal Copyright:
Legal Trademarks:
Original Filename: server.exe
Internal Name: server.exe
File Version: 0.0.0.0
File Description:
Comments:
Language: Language Neutral
PE Sections
| Name | Virtual Address | Virtual Size | Raw Size | Entropy | Section MD5 |
|---|---|---|---|---|---|
| .text | 8192 | 3945895 | 3945984 | 3.78813 | 4334361d5c02f597345b60e98dc547c7 |
| .rsrc | 3956736 | 664 | 1024 | 1.47862 | 63f525e3b6792c692f08ee76bd0eb762 |
| .reloc | 3964928 | 12 | 512 | 0.070639 | d152222fe347b1b0f9e0adf7f3008a4f |
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 Backdoor 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_544_rwx_10000000_0004D000:
`.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
KWindows
TServerKeylogger
GetWindowsDirectoryW
RegOpenKeyExW
RegCreateKeyW
RegCloseKey
RegOpenKeyExA
FindExecutableW
ShellExecuteW
SHDeleteKeyW
URLDownloadToCacheFileW
UnhookWindowsHookEx
SetWindowsHookExW
MapVirtualKeyW
GetKeyboardLayout
GetKeyState
GetKeyboardType
GetKeyboardState
FtpPutFileW
FtpSetCurrentDirectoryW
.idata
.rdata
P.reloc
P.rsrc
URLD}
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\
ÞFAULTBROWSER%
svchost.exe
njratro.no-ip.biz
Server.exe
{5460C4DF-B266-909E-CB58-E32B79832EB2}HKCU\Software\Microsoft\Windows\CurrentVersion\Run
PTF.ftpserver.com
ftpuser
iexplore.exe_1228:
%?9-*09,*19}*09
.text
`.data
.rsrc
msvcrt.dll
KERNEL32.dll
NTDLL.DLL
USER32.dll
SHLWAPI.dll
SHDOCVW.dll
Software\Microsoft\Windows\CurrentVersion\Explorer\BrowseNewProcess
IE-X-X
rsabase.dll
System\CurrentControlSet\Control\Windows
dw15 -x -s %u
watson.microsoft.com
IEWatsonURL
%s -h %u
iedw.exe
Iexplore.XPExceptionFilter
jscript.DLL
mshtml.dll
mlang.dll
urlmon.dll
wininet.dll
shdocvw.DLL
browseui.DLL
comctl32.DLL
IEXPLORE.EXE
iexplore.pdb
ADVAPI32.dll
MsgWaitForMultipleObjects
IExplorer.EXE
IIIIIB(II<.Fg
7?_____ZZSSH%
)z.UUUUUUUU
,....Qym
````2```
{.QLQIIIKGKGKGKGKGKG;33;33;0
8888880
8887080
browseui.dll
shdocvw.dll
6.00.2900.5512 (xpsp.080413-2105)
Windows
Operating System
6.00.2900.5512
iexplore.exe_1228_rwx_10000000_0004D000:
`.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
KWindows
TServerKeylogger
GetWindowsDirectoryW
RegOpenKeyExW
RegCreateKeyW
RegCloseKey
RegOpenKeyExA
FindExecutableW
ShellExecuteW
SHDeleteKeyW
URLDownloadToCacheFileW
UnhookWindowsHookEx
SetWindowsHookExW
MapVirtualKeyW
GetKeyboardLayout
GetKeyState
GetKeyboardType
GetKeyboardState
FtpPutFileW
FtpSetCurrentDirectoryW
.idata
.rdata
P.reloc
P.rsrc
URLD}
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\
ÞFAULTBROWSER%
svchost.exe
njratro.no-ip.biz
Server.exe
{5460C4DF-B266-909E-CB58-E32B79832EB2}HKCU\Software\Microsoft\Windows\CurrentVersion\Run
PTF.ftpserver.com
ftpuser
%WinDir%\suLjyXabeeG6r3PMTNOF.exe
%Program Files%\Internet Explorer\iexplore.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):
suLjyXabeeG6r3PMTNOF.exe:1480
%original file name%.exe:396 - Delete the original Backdoor file.
- Delete or disinfect the following files created/modified by the Backdoor:
%WinDir%\Microsoft.NET\Framework\v2.0.50727\CONFIG\enterprisesec.config.cch.new (10036 bytes)
%WinDir%\Microsoft.NET\Framework\v2.0.50727\CONFIG\security.config.cch.new (10036 bytes)
%WinDir%\suLjyXabeeG6r3PMTNOF.exe (33 bytes) - 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.
