HEUR:Trojan.Win32.Generic (Kaspersky), Gen:Variant.Barys.53633 (B) (Emsisoft), Gen:Variant.Barys.53633 (AdAware), Backdoor.Win32.Farfli.FD, Backdoor.Win32.Xtrat.FD, Trojan.Win32.IEDummy.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: 5a3f92a92c1fd9542172179dec6d362b
SHA1: eaaa75506500b2ac1cd68e03adefbb2022964fce
SHA256: 8b021c9842bf92867297fd8f8609f40f76151934affc2a93ab0ff10a932bfa64
SSDeep: 6144:R2GhNoBLL/nAwpCwlTLFD6cNbcQQO6O8WYxqgVLgIvnRBDkZ4icIZV1NNXq:R2iNyLF6cNbxDljYx5sI/G4uw
Size: 362596 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6
Company: no certificate found
Created at: 2015-10-10 23:31:55
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 Trojan's file once a user opens a drive's folder in Windows Explorer. |
Process activity
The Trojan creates the following process(es):
%original file name%.exe:1108
Yewzjyuhur.exe:1088
The Trojan injects its code into the following process(es):
svchost.exe:2016
iexplore.exe:1784
Mutexes
The following mutexes were created/opened:No objects were found.
File activity
The process %original file name%.exe:1108 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\Yewzjyuhur.exe (4708 bytes)
The process Yewzjyuhur.exe:1088 makes changes in the file system.
The Trojan deletes the following file(s):
%Documents and Settings%\%current user%\Local Settings\Temp\x.html (0 bytes)
Registry activity
The process %original file name%.exe:1108 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "1A 76 3F 01 B7 36 F6 94 EF B6 3F E8 71 EF 77 94"
[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"
[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"
[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\Local Settings\Temp]
"Yewzjyuhur.exe" = "Yewzjyuhur"
[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\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"
The Trojan modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:
[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass" = "1"
The Trojan 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:
"UNCAsIntranet" = "1"
The Trojan modifies IE settings for security zones to map all urls to the Intranet Zone:
"IntranetName" = "1"
The process Yewzjyuhur.exe:1088 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "DB 2D A7 D7 2A 5D 36 59 5C 6B 9C 81 B7 E7 EA B1"
[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" = "D8V4hZo5G"
Dropped PE files
MD5 | File path |
---|---|
260a87d19dbd307c06b2be851d9b4f1d | c:\Documents and Settings\"%CurrentUserName%"\Application Data\InstallDir\svchost.exe |
260a87d19dbd307c06b2be851d9b4f1d | c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\Yewzjyuhur.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 Trojan'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:1108
Yewzjyuhur.exe:1088 - Delete the original Trojan file.
- Delete or disinfect the following files created/modified by the Trojan:
%Documents and Settings%\%current user%\Local Settings\Temp\Yewzjyuhur.exe (4708 bytes)
- 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: 1.0.0.0
Legal Copyright:
Legal Trademarks:
Original Filename: Software.exe
Internal Name: Software.exe
File Version: 1.0.0.0
File Description:
Comments:
Language: English (United States)
Company Name: Product Name: Product Version: 1.0.0.0Legal Copyright: Legal Trademarks: Original Filename: Software.exeInternal Name: Software.exeFile Version: 1.0.0.0File Description: Comments: Language: English (United States)
PE Sections
Name | Virtual Address | Virtual Size | Raw Size | Entropy | Section MD5 |
---|---|---|---|---|---|
.text | 8192 | 323924 | 324096 | 5.36452 | 539db6afce603e6a293fcedd111a79d3 |
.sdata | 335872 | 126 | 512 | 1.29372 | 9f8d18efca8c7e95c060707261b6a7b0 |
.rsrc | 344064 | 2520 | 2560 | 2.77683 | 7644664b435e6caf7ef0caf8a0837410 |
.reloc | 352256 | 12 | 512 | 0.070639 | b441ccce7f015b4e756a606707958a5f |
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 Trojan connects to the servers at the folowing location(s):
Strings from Dumps
svchost.exe_2016:
.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_2016_rwx_10000000_0004D000:
`.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
KWindows
KWindows
TServerKeylogger
TServerKeylogger
GetWindowsDirectoryW
GetWindowsDirectoryW
RegOpenKeyExW
RegOpenKeyExW
RegCreateKeyW
RegCreateKeyW
RegCloseKey
RegCloseKey
RegOpenKeyExA
RegOpenKeyExA
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
URLDb
URLDb
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\
ÞFAULTBROWSER%
ÞFAULTBROWSER%
svchost.exe
svchost.exe
pedrinhomitador.no-ip.org
pedrinhomitador.no-ip.org
C:\Windows\system32\WINNSI.pedrinhomitador.no-ip.org
C:\Windows\system32\WINNSI.pedrinhomitador.no-ip.org
C:\Windows\system32\WINNSI.
C:\Windows\system32\WINNSI.
{RJ5447FU-OW36-0W3T-405L-P61S5K3JFJJB}
{RJ5447FU-OW36-0W3T-405L-P61S5K3JFJJB}
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Bin%SERVER%
Bin%SERVER%
ftpuser
ftpuser
PTF.ftpserver.com
PTF.ftpserver.com
iexplore.exe_1784:
%?9-*09,*19}*09
%?9-*09,*19}*09
.text
.text
`.data
`.data
.rsrc
.rsrc
msvcrt.dll
msvcrt.dll
KERNEL32.dll
KERNEL32.dll
NTDLL.DLL
NTDLL.DLL
USER32.dll
USER32.dll
SHLWAPI.dll
SHLWAPI.dll
SHDOCVW.dll
SHDOCVW.dll
Software\Microsoft\Windows\CurrentVersion\Explorer\BrowseNewProcess
Software\Microsoft\Windows\CurrentVersion\Explorer\BrowseNewProcess
IE-X-X
IE-X-X
rsabase.dll
rsabase.dll
System\CurrentControlSet\Control\Windows
System\CurrentControlSet\Control\Windows
dw15 -x -s %u
dw15 -x -s %u
watson.microsoft.com
watson.microsoft.com
IEWatsonURL
IEWatsonURL
%s -h %u
%s -h %u
iedw.exe
iedw.exe
Iexplore.XPExceptionFilter
Iexplore.XPExceptionFilter
jscript.DLL
jscript.DLL
mshtml.dll
mshtml.dll
mlang.dll
mlang.dll
urlmon.dll
urlmon.dll
wininet.dll
wininet.dll
shdocvw.DLL
shdocvw.DLL
browseui.DLL
browseui.DLL
comctl32.DLL
comctl32.DLL
IEXPLORE.EXE
IEXPLORE.EXE
iexplore.pdb
iexplore.pdb
ADVAPI32.dll
ADVAPI32.dll
MsgWaitForMultipleObjects
MsgWaitForMultipleObjects
IExplorer.EXE
IExplorer.EXE
IIIIIB(II<.fg>
IIIIIB(II<.fg>
7?_____ZZSSH%
7?_____ZZSSH%
)z.UUUUUUUU
)z.UUUUUUUU
,....Qym
,....Qym
````2```
````2```
{.QLQIIIKGKGKGKGKGKG
{.QLQIIIKGKGKGKGKGKG
;33;33;0
;33;33;0
8888880
8888880
8887080
8887080
browseui.dll
browseui.dll
shdocvw.dll
shdocvw.dll
6.00.2900.5512 (xpsp.080413-2105)
6.00.2900.5512 (xpsp.080413-2105)
Windows
Windows
Operating System
Operating System
6.00.2900.5512
6.00.2900.5512
iexplore.exe_1784_rwx_10000000_0004D000:
`.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
KWindows
KWindows
TServerKeylogger
TServerKeylogger
GetWindowsDirectoryW
GetWindowsDirectoryW
RegOpenKeyExW
RegOpenKeyExW
RegCreateKeyW
RegCreateKeyW
RegCloseKey
RegCloseKey
RegOpenKeyExA
RegOpenKeyExA
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
URLDb
URLDb
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\
ÞFAULTBROWSER%
ÞFAULTBROWSER%
svchost.exe
svchost.exe
pedrinhomitador.no-ip.org
pedrinhomitador.no-ip.org
C:\Windows\system32\WINNSI.pedrinhomitador.no-ip.org
C:\Windows\system32\WINNSI.pedrinhomitador.no-ip.org
C:\Windows\system32\WINNSI.
C:\Windows\system32\WINNSI.
{RJ5447FU-OW36-0W3T-405L-P61S5K3JFJJB}
{RJ5447FU-OW36-0W3T-405L-P61S5K3JFJJB}
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Bin%SERVER%
Bin%SERVER%
ftpuser
ftpuser
PTF.ftpserver.com
PTF.ftpserver.com
%Documents and Settings%\%current user%\Local Settings\Temp\Yewzjyuhur.exe
%Documents and Settings%\%current user%\Local Settings\Temp\Yewzjyuhur.exe
%Program Files%\Internet Explorer\iexplore.exe
%Program Files%\Internet Explorer\iexplore.exe