Trojan.Generic.6805459_9b8b27fd8e

by malwarelabrobot on April 2nd, 2017 in Malware Descriptions.

Trojan.Win32.Cosmu.chr (Kaspersky), Trojan.Generic.6805459 (B) (Emsisoft), Trojan.Generic.6805459 (AdAware), Worm.Win32.AutoIt.FD, WormAutoItGen.YR (Lavasoft MAS)
Behaviour: Trojan, Worm


The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

Requires JavaScript enabled!

Summary
Dynamic Analysis
Static Analysis
Network Activity
Map
Strings from Dumps
Removals

MD5: 9b8b27fd8ed1a9b9f7942a403d0b6111
SHA1: bfac7a8c14732397dba6ed806d52faa482e1a0de
SHA256: 00d95a8f0fb7609634c6218caddf57df2d2d9dafbb92d5a2c451eeff3cc29969
SSDeep: 24576:9wlBrygOW3mFYoIHSSNeW25bXK6GNvr VJNEywH7qBci:w5mFYH85ba7YEywbq9
Size: 4321280 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: PackerUPXCompresorGratuitowwwupxsourceforgenet, UPolyXv05_v6
Company: no certificate found
Created at: 2007-11-25 11:21:46
Analyzed on: Windows7 SP1 32-bit


Summary:

Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

rundll32.exe:2524

The Trojan injects its code into the following process(es):

%original file name%.exe:1760

Mutexes

The following mutexes were created/opened:
No objects were found.

File activity

The process %original file name%.exe:1760 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

C:\Windows\regsvr.exe (31071 bytes)
C:\Windows\System32\setting.ini (6 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Temp\aut9CEA.tmp (2577 bytes)
C:\Windows\System32\svchost .exe (31071 bytes)
C:\Windows\System32\setup.ini (164 bytes)
C:\Windows\System32\regsvr.exe (31071 bytes)

The Trojan deletes the following file(s):

C:\Users\"%CurrentUserName%"\AppData\Local\Temp\aut9CEA.tmp (0 bytes)

The process rundll32.exe:2524 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\STRODXPL\desktop.ini (67 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\PYQ059LX\desktop.ini (67 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\desktop.ini (67 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\KJF02ERK\desktop.ini (67 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\index.dat (16 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\desktop.ini (67 bytes)
C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\PZ9ZH5LA\desktop.ini (67 bytes)

Registry activity

The process %original file name%.exe:1760 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Tracing\9b8b27fd8ed1a9b9f7942a403d0b6111_RASMANCS]
"FileDirectory" = "%windir%\tracing"
"FileTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Tracing\9b8b27fd8ed1a9b9f7942a403d0b6111_RASAPI32]
"ConsoleTracingMask" = "4294901760"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\WorkgroupCrawler\Shares]
"shared" = "\New Folder .exe"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"GlobalUserOffline" = "0"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System]
"DisableRegistryTools" = "1"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"AutoDetect" = "1"
"UNCAsIntranet" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\9b8b27fd8ed1a9b9f7942a403d0b6111_RASAPI32]
"EnableFileTracing" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\9b8b27fd8ed1a9b9f7942a403d0b6111_RASMANCS]
"EnableConsoleTracing" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\9b8b27fd8ed1a9b9f7942a403d0b6111_RASAPI32]
"EnableConsoleTracing" = "0"

[HKLM\System\CurrentControlSet\Services\Schedule]
"AtTaskMaxHours" = "0"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer]
"NoFolderOptions" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\9b8b27fd8ed1a9b9f7942a403d0b6111_RASAPI32]
"FileDirectory" = "%windir%\tracing"

[HKLM\SOFTWARE\Microsoft\Tracing\9b8b27fd8ed1a9b9f7942a403d0b6111_RASMANCS]
"EnableFileTracing" = "0"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "46 00 00 00 3C 00 00 00 09 00 00 00 00 00 00 00"

[HKLM\SOFTWARE\Microsoft\Tracing\9b8b27fd8ed1a9b9f7942a403d0b6111_RASAPI32]
"FileTracingMask" = "4294901760"
"MaxFileSize" = "1048576"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System]
"DisableTaskMgr" = "0"

[HKLM\SOFTWARE\Microsoft\Tracing\9b8b27fd8ed1a9b9f7942a403d0b6111_RASMANCS]
"MaxFileSize" = "1048576"
"ConsoleTracingMask" = "4294901760"

To automatically run itself each time Windows is booted, the Trojan adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"Msn Messsenger" = "C:\Windows\system32\regsvr.exe"

Proxy settings are disabled:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

The Trojan adds the reference to itself to be executed when a user logs on:

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
"Shell" = "Explorer.exe regsvr.exe"

The Trojan deletes the following value(s) in system registry:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyOverride"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyServer"
"AutoConfigURL"

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

VersionInfo

Company Name:
Product Name:
Product Version:
Legal Copyright:
Legal Trademarks:
Original Filename:
Internal Name:
File Version: 4, 3, 4, 6
File Description:
Comments:
Language: English (United States)

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
UPX0 4096 450560 0 0 d41d8cd98f00b204e9800998ecf8427e
UPX1 454656 225280 222720 5.49156 c6b79943e9575abc5fab215bae9f323b
.rsrc 679936 81920 80896 3.45884 d437bf29fa37f161681f60c11fe6250d
.MUPX1 761856 143360 143360 0 10b57f5d907a1e2f0afa66d0e6d05a5d

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Total found: 18
c748c67262c7d48b67c4d661666b895d
cf499e3fd5c96bc618f08fec5f0305e6
1e48d8e927b55d88e63abb2821e7cbf8
d98562530a505ba2c328a1914462ff0b
8dad1c458958d16e1e4980448f9f04d3
035193b755395e7f358e7daadd1342c6
d21b7aa566fb45d95e15b3b0bc9aea3c
91b8380723371e90ad9af91fa8135ddd
8db2eae6e6720ee320f9adbcfd252293
2e0ceb262ba5eb08116231b3dde7b746
32badf5f808afb9903cc5dc5c0581838
e79e3d7da2e20072df8b9827e2c5664c
1de08754727406f42eefba2c4f48f24f
16c74c270d1417745f864d2d520b9f22
4ec2176d18f9502c77ab6cb4eb32a1eb
51c366835763a73843e76db451e63880
7c5a26bae5712c577a962ca11443df38
7fe0f093013b702523c8d89a29ee4d78

URLs

URL IP
hxxp://yahoo.com/setting.doc
hxxp://fd-fp3.wg1.b.yahoo.com/setting.xls


IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

ET TROJAN Possible Worm W32.Svich or Other Infection Request for setting.doc
ET TROJAN Possible Worm W32.Svich or Other Infection Request for setting.xls

Traffic

The Trojan connects to the servers at the folowing location(s):

%original file name%.exe_1760:

`.rsrc
.MUPX1
PSShD
|$(;|$,~
t=Ht.Ht
t.Ht Ht
YtMSSh
!!!!!!""#$%&'(((((())* ,-.DDDDDDDD//01234555676789:;<:;<DDD=>?@ABC
.VVVVVSRSSj
tGHt.Ht&
Bv=kAv.SCvs
operand of unlimited repeat could match the empty string
POSIX named classes are supported only within a class
erroffset passed as NULL
POSIX collating elements are not supported
this version of PCRE is not compiled with PCRE_UTF8 support
PCRE does not support \L, \l, \N, \U, or \u
support for \P, \p, and \X has not been compiled
(*VERB) with an argument is not supported
mscoree.dll
.mixcrt
KERNEL32.DLL
Please contact the application's support team for more information.
- Attempt to initialize the CRT more than once.
- CRT not initialized
- floating point support not loaded
GetProcessWindowStation
USER32.DLL
operator
kernel32.dll
This is a compiled AutoIt script. AV researchers please email avsupport@autoitscript.com for support.
uxtheme.dll
APPSKEY
ASC 0%d
Psapi.dll
shell32.dll
user32.dll
Wininet.dll
FtpGetFileSize
ICMP.DLL
InternetOpenUrlW
HttpOpenRequestW
HttpSendRequestW
HttpQueryInfoW
FtpOpenFileW
InternetCrackUrlW
Advapi32.dll
zcÁ
GetWindowsDirectoryW
CreatePipe
PeekNamedPipe
GetProcessHeap
GetCPInfo
GetConsoleOutputCP
RegDeleteKeyW
RegCreateKeyExW
RegEnumKeyExW
RegCloseKey
RegOpenKeyExW
SetViewportOrgEx
ShellExecuteExW
SHFileOperationW
ShellExecuteW
UnregisterHotKey
ExitWindowsEx
EnumThreadWindows
GetAsyncKeyState
GetKeyboardState
GetKeyState
VkKeyScanA
GetKeyboardLayoutNameA
EnumWindows
EnumChildWindows
MapVirtualKeyW
GetKeyboardLayoutNameW
RegisterHotKey
SetKeyboardState
keybd_event
.text
`.rdata
@.data
.rsrc
3333333330
3333330
333333333333330
.LjR=W
.Jbjx=
^_^\^_\^[__^^_^^__^^^^___^__^\_\\_^^^^\^^_[__^^__^_^__^^\[^^_^_^^_^\_^_^^\^\^[^[[__^\^^^\-
4444444
333333333333333
444444444
33333333333333
ADVAPI32.dll
COMCTL32.dll
comdlg32.dll
GDI32.dll
MPR.dll
ole32.dll
OLEAUT32.dll
SHELL32.dll
USER32.dll
VERSION.dll
WINMM.dll
WSOCK32.dll
CMDLINERAW
CMDLINE
/AutoIt3ExecuteLine
/AutoIt3ExecuteScript
%s (%d) : ==> %s.:
Line %d:
Line %d (File "%s"):
%s (%d) : ==> %s:
AutoIt script files (*.au3, *.a3x)
*.au3;*.a3x
All files (*.*)
04090000
%u.%u.%u.%u
0.0.0.0
Mddddd
FTPSETPROXY
GUICTRLRECVMSG
GUICTRLSENDMSG
GUIGETMSG
GUIREGISTERMSG
HOTKEYSET
HTTPSETPROXY
ISKEYWORD
MSGBOX
REGENUMKEY
SHELLEXECUTE
SHELLEXECUTEWAIT
TCPACCEPT
TCPCLOSESOCKET
TCPCONNECT
TCPLISTEN
TCPNAMETOIP
TCPRECV
TCPSEND
TCPSHUTDOWN
TCPSTARTUP
TRAYGETMSG
UDPBIND
UDPCLOSESOCKET
UDPOPEN
UDPRECV
UDPSEND
UDPSHUTDOWN
UDPSTARTUP
URLDOWNLOADTOFILE
==> %s
\??\%s
GUI_RUNDEFMSG
FtpBinaryMode
SendKeyDelay
SendKeyDownDelay
TCPTimeout
AUTOITCALLVARIABLE%d
Keyword
AutoIt.Error
Null Object assignment in FOR..IN loop
Incorrect Object type in FOR..IN loop
.AUTOITX64
HOTKEYPRESSED
AUTOITEXE
WINDOWSDIR
SOFTWARE\Microsoft\Windows\CurrentVersion
SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders
UNKN%d
WIN32_WINDOWS
.DEFAULT\Control Panel\Desktop\ResourceLocale
3, 2, 10, 0
HKEY_LOCAL_MACHINE
HKEY_CLASSES_ROOT
HKEY_CURRENT_CONFIG
HKEY_CURRENT_USER
HKEY_USERS
%d/d/d
c:\%original file name%.exe
C:\%original file name%.exe
4, 3, 4, 6

%original file name%.exe_1760_rwx_00401000_000A4000:

PSShD
|$(;|$,~
t=Ht.Ht
t.Ht Ht
YtMSSh
!!!!!!""#$%&'(((((())* ,-.DDDDDDDD//01234555676789:;<:;<DDD=>?@ABC
.VVVVVSRSSj
tGHt.Ht&
Bv=kAv.SCvs
operand of unlimited repeat could match the empty string
POSIX named classes are supported only within a class
erroffset passed as NULL
POSIX collating elements are not supported
this version of PCRE is not compiled with PCRE_UTF8 support
PCRE does not support \L, \l, \N, \U, or \u
support for \P, \p, and \X has not been compiled
(*VERB) with an argument is not supported
mscoree.dll
.mixcrt
KERNEL32.DLL
Please contact the application's support team for more information.
- Attempt to initialize the CRT more than once.
- CRT not initialized
- floating point support not loaded
GetProcessWindowStation
USER32.DLL
operator
kernel32.dll
This is a compiled AutoIt script. AV researchers please email avsupport@autoitscript.com for support.
uxtheme.dll
APPSKEY
ASC 0%d
Psapi.dll
shell32.dll
user32.dll
Wininet.dll
FtpGetFileSize
ICMP.DLL
InternetOpenUrlW
HttpOpenRequestW
HttpSendRequestW
HttpQueryInfoW
FtpOpenFileW
InternetCrackUrlW
Advapi32.dll
zcÁ
GetWindowsDirectoryW
CreatePipe
PeekNamedPipe
GetProcessHeap
GetCPInfo
GetConsoleOutputCP
RegDeleteKeyW
RegCreateKeyExW
RegEnumKeyExW
RegCloseKey
RegOpenKeyExW
SetViewportOrgEx
ShellExecuteExW
SHFileOperationW
ShellExecuteW
UnregisterHotKey
ExitWindowsEx
EnumThreadWindows
GetAsyncKeyState
GetKeyboardState
GetKeyState
VkKeyScanA
GetKeyboardLayoutNameA
EnumWindows
EnumChildWindows
MapVirtualKeyW
GetKeyboardLayoutNameW
RegisterHotKey
SetKeyboardState
keybd_event
.text
`.rdata
@.data
.rsrc
CMDLINERAW
CMDLINE
/AutoIt3ExecuteLine
/AutoIt3ExecuteScript
%s (%d) : ==> %s.:
Line %d:
Line %d (File "%s"):
%s (%d) : ==> %s:
AutoIt script files (*.au3, *.a3x)
*.au3;*.a3x
All files (*.*)
04090000
%u.%u.%u.%u
0.0.0.0
Mddddd
FTPSETPROXY
GUICTRLRECVMSG
GUICTRLSENDMSG
GUIGETMSG
GUIREGISTERMSG
HOTKEYSET
HTTPSETPROXY
ISKEYWORD
MSGBOX
REGENUMKEY
SHELLEXECUTE
SHELLEXECUTEWAIT
TCPACCEPT
TCPCLOSESOCKET
TCPCONNECT
TCPLISTEN
TCPNAMETOIP
TCPRECV
TCPSEND
TCPSHUTDOWN
TCPSTARTUP
TRAYGETMSG
UDPBIND
UDPCLOSESOCKET
UDPOPEN
UDPRECV
UDPSEND
UDPSHUTDOWN
UDPSTARTUP
URLDOWNLOADTOFILE
==> %s
\??\%s
GUI_RUNDEFMSG
FtpBinaryMode
SendKeyDelay
SendKeyDownDelay
TCPTimeout
AUTOITCALLVARIABLE%d
Keyword
AutoIt.Error
Null Object assignment in FOR..IN loop
Incorrect Object type in FOR..IN loop
.AUTOITX64
HOTKEYPRESSED
AUTOITEXE
WINDOWSDIR
SOFTWARE\Microsoft\Windows\CurrentVersion
SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders
UNKN%d
WIN32_WINDOWS
.DEFAULT\Control Panel\Desktop\ResourceLocale
3, 2, 10, 0
HKEY_LOCAL_MACHINE
HKEY_CLASSES_ROOT
HKEY_CURRENT_CONFIG
HKEY_CURRENT_USER
HKEY_USERS
%d/d/d
c:\%original file name%.exe
C:\%original file name%.exe


Remove it with Ad-Aware

  1. Click (here) to download and install Ad-Aware Free Antivirus.
  2. Update the definition files.
  3. Run a full scan of your computer.


Manual removal*

  1. Terminate malicious process(es) (How to End a Process With the Task Manager):

    rundll32.exe:2524

  2. Delete the original Trojan file.
  3. Delete or disinfect the following files created/modified by the Trojan:

    C:\Windows\regsvr.exe (31071 bytes)
    C:\Windows\System32\setting.ini (6 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Temp\aut9CEA.tmp (2577 bytes)
    C:\Windows\System32\svchost .exe (31071 bytes)
    C:\Windows\System32\setup.ini (164 bytes)
    C:\Windows\System32\regsvr.exe (31071 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\STRODXPL\desktop.ini (67 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\PYQ059LX\desktop.ini (67 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\desktop.ini (67 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\KJF02ERK\desktop.ini (67 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\index.dat (16 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\desktop.ini (67 bytes)
    C:\Users\"%CurrentUserName%"\AppData\Local\Microsoft\Windows\Temporary Internet Files\Low\Content.IE5\PZ9ZH5LA\desktop.ini (67 bytes)

  4. Delete the following value(s) in the autorun key (How to Work with System Registry):

    [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
    "Msn Messsenger" = "C:\Windows\system32\regsvr.exe"

  5. Remove the references to the Trojan by modifying the following registry value(s) (How to Work with System Registry):

    [HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon]
    "Shell" = "Explorer.exe regsvr.exe"

  6. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
  7. Reboot the computer.

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.

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