Gen.Variant.MSIL.Cassiopeia.4_a7aa0ab76d

by malwarelabrobot on June 5th, 2016 in Malware Descriptions.

HEUR:Trojan.Win32.Generic (Kaspersky), Gen:Variant.MSIL.Cassiopeia.4 (B) (Emsisoft), Gen:Variant.MSIL.Cassiopeia.4 (AdAware), Worm.Win32.Ainslot.VB.FD, GenericAutorunWorm.YR, WormAinslot_VariantOfZeus.YR (Lavasoft MAS)
Behaviour: Trojan, Worm, WormAutorun


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: a7aa0ab76d22b83bcf33ab0699354675
SHA1: 7784b7afa4a422fdea3c8b0854bd8f47db342571
SHA256: 1a9b08c8e1e00018a90a3f1138c84bf09517987bfb84b960ae4805eb997d94a6
SSDeep: 6144:PP5sFZXG3HSO1bei26SZklUEdqKe3zcqlG6Uw/LQJ/7n1y:PP5sFZ8H3KojiKe34CGh2CI
Size: 311297 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6
Company: no certificate found
Created at: 2011-06-23 21:09:05
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 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:1300

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

vbc.exe:432

Mutexes

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

File activity

The process vbc.exe:432 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\msnmsgrs (32 bytes)
%Documents and Settings%\%current user%\Application Data\msnmsgrs.exe (4032 bytes)

The process %original file name%.exe:1300 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\vbc.exe (7547 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\%original file name%.exe (1425 bytes)

Registry activity

The process vbc.exe:432 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "60 DD E0 49 94 1F 99 6C E3 90 00 22 D4 B1 8A 80"

[HKCU\Software\Microsoft\Active Setup\Installed Components\{8CF7ABBC-ACDE-B807-0981-E696DCEC8CE7}]
"StubPath" = "%Documents and Settings%\%current user%\Application Data\msnmsgrs.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\policies\Explorer\Run]
"msnmsgrs" = "%Documents and Settings%\%current user%\Application Data\msnmsgrs.exe"

[HKCU\Software\VB and VBA Program Settings\SrvID\ID]
"G0SYRA7KUM" = "keygen-adobe"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

[HKLM\SOFTWARE\Microsoft\Active Setup\Installed Components\{8CF7ABBC-ACDE-B807-0981-E696DCEC8CE7}]
"StubPath" = "%Documents and Settings%\%current user%\Application Data\msnmsgrs.exe"

[HKCU\Software\VB and VBA Program Settings\INSTALL\DATE]
"G0SYRA7KUM" = "June 4, 2016"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"msnmsgrs" = "%Documents and Settings%\%current user%\Application Data\msnmsgrs.exe"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"msnmsgrs" = "%Documents and Settings%\%current user%\Application Data\msnmsgrs.exe"

The process %original file name%.exe:1300 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "78 3B 2F F0 29 B3 DA 3F 67 FA 08 BE E2 1C 14 0F"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\%current user%\Application Data"
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

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]
"Windows Update" = "%Documents and Settings%\%current user%\Local Settings\Temp\%original file name%.exe"

Dropped PE files

MD5 File path
adfc67526ae0a741c96bae557b0eb8b5 c:\Documents and Settings\"%CurrentUserName%"\Application Data\msnmsgrs.exe
67f5238229333c061092f5a32e8c2ee1 c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\vbc.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.

VersionInfo

Company Name: Keygen.exe
Product Name: Keygen.exe
Product Version: 1.0.0.0
Legal Copyright: Keygen.exe
Legal Trademarks: Keygen.exe
Original Filename: tempKeygen.exe
Internal Name: tempKeygen.exe
File Version: 1.0.0.0
File Description: Keygen.exe
Comments: Keygen.exe
Language: English (United States)

PE Sections

Name Virtual Address Virtual Size Raw Size Entropy Section MD5
.text 8192 295780 299008 5.48731 9c6fc54343bb4085bc77f7e1114b232c
.rsrc 311296 952 4096 0.649172 07cac8558f44dcb78865e7a4b5531273
.reloc 319488 12 4096 0.011373 282e6bed057f51fe30f645958a258b34

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

vbc.exe_432:

`.rsrc
WebHide/
N.ltOp
bss_server.usrReverseRelay
bss_server.usrRelay
tmrWebHide
bss_server.Socket
mswinsck.ocx
MSWinsockLib.Winsock
modLaunchWeb
C:\Windows\SysWOW64\ieframe.dll
%Program Files% (x86)\Microsoft Visual Studio\VB98\VB6.OLB
%sckRelay
winmm.dll
user32.dll
advapi32.dll
shell32.dll
kernel32.dll
avicap32.dll
advpack.dll
GetAsyncKeyState
SetWindowsHookExA
UnhookWindowsHookEx
GetKeyboardLayout
GetKeyboardState
GetKeyState
PSAPI.DLL
SHFileOperationA
CreatePipe
CHAT_ADDMSG
GetTcpTable
ExitWindowsEx
EnumWindows
WinInet.dll
DeleteUrlCacheEntryA
urlmon
URLDownloadToFileA
ShellExecuteA
keybd_event
cmdShowfiles
tmrTCP
J%Program Files% (x86)\Microsoft Visual Studio\VB98\vbc14663.oca
tmrUDP
UDPSocket
UDPFlood
VBA6.DLL
AddMsg
C:\Windows\SysWow64\msvbvm60.dll\3
ws2_32.dll
GdiplusShutdown
RemotePort
LocalPort
WSOCK32.DLL
RegCloseKey
RegOpenKeyExA
ntdll.dll
ole32.dll
crypt32.dll
oleaut32.dll
RegOpenKeyA
FindNextUrlCacheEntryA
FindFirstUrlCacheEntryA
txtPassword
imgLoginPressed
imgLogin
RegCreateKeyA
RegDeleteKeyA
RegEnumKeyExA
gdi32.dll
olepro32.dll
InternetOpenUrlA
FtpGetFileA
FtpPutFileA
FtpSetCurrentDirectoryA
FtpGetCurrentDirectoryA
FtpOpenFileA
FtpGetFileSize
FtpDeleteFileA
FtpCreateDirectoryA
FtpRemoveDirectoryA
FtpRenameFileA
FtpDownload
FtpUpload
FtpGetDirectory
Http_DownloadFile
msvbvm60.dll
?8??8??8??8??8?
.QX0WPp
uMsg
strMsg
MsgNum
AllMsgs
lngPort
Port
Password
WebURL
Returns/Sets the port to be connected to on the remote computer
Returns/Sets the port used on the local computer
Binds socket to specific port and adapter
Occurs after a send operation has completed
.text
`.data
.rsrc
KERNEL32.DLL
MSVBVM60.DLL
*\AC:\Users\Admin\Desktop_old\Blackshades project\Blackshades NET\server\server.vbp
2c49f800-c2dd-11cf-9ad6-0080c7e7b78d
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1) Gecko/20090612 Firefox/3.5
{00020404-0000-0000-C000-000000000046}
\nir_cmd.bss speak text
\nir_cmd.bss setsysvolume 65535
\nir_cmd.bss mutesysvolume 1
\nir_cmd.bss mutesysvolume 0
\nir_cmd.bss screensaver
\nir_cmd.bss monitor off
\nir_cmd.bss monitor on
PORT
TRANSFERPORT
SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\
Keylog
Wscript.Shell
HKEY_CLASSES_ROOT\HTTP\shell\open\command\
\winlogon.exe
iexplore.exe
hXXp://VVV.facebook.com/?ref=home
hXXp://VVV.facebook.com
ADVAPI32.dll
Windows Firewall/Internet Connection Sharing (ICS)
WebCamCapture
\Vuze\Azureus.exe
\LimeWire\LimeWire.exe
\uTorrent\uTorrent.exe
\uTorrent\uTorrent.exe /HIDE
\BitTorrent\bittorrent.exe
\MSWINSCK.OCX
\cmd.exe
\data.dat
\steam\steam.exe
nkey
dkey
regsvr32.exe
\pws_mail.bss
\pws_mess.bss
\pws_cdk.bss
\nir_cmd.bss
cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "
:*:Enabled:Windows Messanger" /f
winmgmts:{impersonationLevel=Impersonate}!\\.\root\cimv2
00000000
winmgmts:\\.\root\cimv2
Select * from Win32_Keyboard
api.ipinfodb.com
GET /v2/ip_query.php?key=
&timezone=off HTTP/1.1
Host: api.ipinfodb.com
GET /v2/ip_query_country.php?key=
Portable
winmgmts:\\.\root\SecurityCenter
\wallpaper.bmp
\wallpaper.jpg
WScript.Shell
WinServer 2003, Web Edition
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProductName
__oxFrame.class__
Scripting.FileSystemObject
Autorun.ini
{557CF401-1A04-11D3-9A73-0000F81EF32E}
{1D5BE4B5-FA4A-452D-9CDD-5DB35105E7EB}
Address family not supported by protocol family.
Operation already in progress.
Operation now in progress.
Socket operation on nonsocket.
Operation not supported.
Protocol family not supported.
Protocol not supported.
Socket type not supported.
Winsock.dll version out of range.
CSocketMaster.SocketExists
CSocketMaster.PostSocket
CSocketMaster.ConnectToIP
CSocketMaster.ResolveIfHostname
CSocketMaster.SendBufferedDataUDP
CSocketMaster.SendBufferedData
sqlite3.dll
mozsqlite3.dll
sqlite3_open
sqlite3_close
sqlite3_prepare_v2
sqlite3_step
sqlite3_finalize
sqlite3_column_text
abe2869f-9b47-4cd9-a358-c22904dba7f7
/stext mess.dat
\mess.dat
/stext mail.dat
\mail.dat
SOFTWARE\MICROSOFT\Windows NT\CurrentVersion
softokn3.dll
Windows
SOFTWARE\Classes\Applications\iexplore.exe\shell\open\command
\Mozilla Firefox\
mozcrt19.dll
nspr4.dll
plc4.dll
plds4.dll
nssutil3.dll
nss3.dll
\Mozilla\Firefox\
profiles.ini
\signons.sqlite
select * from moz_logins
PK11_GetInternalKeySlot
http\shell\open\command
127.0.0.1
\dump.txt
\uTorrent\uTorrent.exe /DIRECTORY
255.255.255.255
finalizarprocessoportas
CONNECT %s:%i HTTP/1.0
SOFTWARE\Classes\http\shell\open\command
Software\Classes\http\shell\open\command
Software\Microsoft\Windows NT\CurrentVersion\SystemRestore
code.is.a.winner
Software\Microsoft\Windows\CurrentVersion\Uninstall\eMule
SOFTWARE\MICROSOFT\Windows NT\CurrentVersion\DigitalProductId
bps1.exe
bhookpl.dll
bnfa.exe
drvloadn.dll
drvloadx.dll
VNCHooks.dll
xr4tdwa.exe
shutdown.exe
TCnRawKeyBoard
HuntHTTPDownload
autorun.inf
hXXps://onlineeast#.bankofamerica.com
winlogon.exe
explorer.exe
SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
\system32\userinit.exe,
steam.exe
hl.exe
@*\AC:\Users\Admin\Desktop_old\Blackshades project\Blackshades NET\server\server.vbp
stub.bin

vbc.exe_432_rwx_00400000_00075000:

`.rsrc
WebHide/
N.ltOp
bss_server.usrReverseRelay
bss_server.usrRelay
tmrWebHide
bss_server.Socket
mswinsck.ocx
MSWinsockLib.Winsock
modLaunchWeb
C:\Windows\SysWOW64\ieframe.dll
%Program Files% (x86)\Microsoft Visual Studio\VB98\VB6.OLB
%sckRelay
winmm.dll
user32.dll
advapi32.dll
shell32.dll
kernel32.dll
avicap32.dll
advpack.dll
GetAsyncKeyState
SetWindowsHookExA
UnhookWindowsHookEx
GetKeyboardLayout
GetKeyboardState
GetKeyState
PSAPI.DLL
SHFileOperationA
CreatePipe
CHAT_ADDMSG
GetTcpTable
ExitWindowsEx
EnumWindows
WinInet.dll
DeleteUrlCacheEntryA
urlmon
URLDownloadToFileA
ShellExecuteA
keybd_event
cmdShowfiles
tmrTCP
J%Program Files% (x86)\Microsoft Visual Studio\VB98\vbc14663.oca
tmrUDP
UDPSocket
UDPFlood
VBA6.DLL
AddMsg
C:\Windows\SysWow64\msvbvm60.dll\3
ws2_32.dll
GdiplusShutdown
RemotePort
LocalPort
WSOCK32.DLL
RegCloseKey
RegOpenKeyExA
ntdll.dll
ole32.dll
crypt32.dll
oleaut32.dll
RegOpenKeyA
FindNextUrlCacheEntryA
FindFirstUrlCacheEntryA
txtPassword
imgLoginPressed
imgLogin
RegCreateKeyA
RegDeleteKeyA
RegEnumKeyExA
gdi32.dll
olepro32.dll
InternetOpenUrlA
FtpGetFileA
FtpPutFileA
FtpSetCurrentDirectoryA
FtpGetCurrentDirectoryA
FtpOpenFileA
FtpGetFileSize
FtpDeleteFileA
FtpCreateDirectoryA
FtpRemoveDirectoryA
FtpRenameFileA
FtpDownload
FtpUpload
FtpGetDirectory
Http_DownloadFile
msvbvm60.dll
?8??8??8??8??8?
.QX0WPp
uMsg
strMsg
MsgNum
AllMsgs
lngPort
Port
Password
WebURL
Returns/Sets the port to be connected to on the remote computer
Returns/Sets the port used on the local computer
Binds socket to specific port and adapter
Occurs after a send operation has completed
.text
`.data
.rsrc
KERNEL32.DLL
MSVBVM60.DLL
*\AC:\Users\Admin\Desktop_old\Blackshades project\Blackshades NET\server\server.vbp
2c49f800-c2dd-11cf-9ad6-0080c7e7b78d
Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1) Gecko/20090612 Firefox/3.5
{00020404-0000-0000-C000-000000000046}
\nir_cmd.bss speak text
\nir_cmd.bss setsysvolume 65535
\nir_cmd.bss mutesysvolume 1
\nir_cmd.bss mutesysvolume 0
\nir_cmd.bss screensaver
\nir_cmd.bss monitor off
\nir_cmd.bss monitor on
PORT
TRANSFERPORT
SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\run\
Keylog
Wscript.Shell
HKEY_CLASSES_ROOT\HTTP\shell\open\command\
\winlogon.exe
iexplore.exe
hXXp://VVV.facebook.com/?ref=home
hXXp://VVV.facebook.com
ADVAPI32.dll
Windows Firewall/Internet Connection Sharing (ICS)
WebCamCapture
\Vuze\Azureus.exe
\LimeWire\LimeWire.exe
\uTorrent\uTorrent.exe
\uTorrent\uTorrent.exe /HIDE
\BitTorrent\bittorrent.exe
\MSWINSCK.OCX
\cmd.exe
\data.dat
\steam\steam.exe
nkey
dkey
regsvr32.exe
\pws_mail.bss
\pws_mess.bss
\pws_cdk.bss
\nir_cmd.bss
cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile /v "DoNotAllowExceptions" /t REG_DWORD /d "0" /f
cmd /c REG ADD HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v "
:*:Enabled:Windows Messanger" /f
winmgmts:{impersonationLevel=Impersonate}!\\.\root\cimv2
00000000
winmgmts:\\.\root\cimv2
Select * from Win32_Keyboard
api.ipinfodb.com
GET /v2/ip_query.php?key=
&timezone=off HTTP/1.1
Host: api.ipinfodb.com
GET /v2/ip_query_country.php?key=
Portable
winmgmts:\\.\root\SecurityCenter
\wallpaper.bmp
\wallpaper.jpg
WScript.Shell
WinServer 2003, Web Edition
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\ProductName
__oxFrame.class__
Scripting.FileSystemObject
Autorun.ini
{557CF401-1A04-11D3-9A73-0000F81EF32E}
{1D5BE4B5-FA4A-452D-9CDD-5DB35105E7EB}
Address family not supported by protocol family.
Operation already in progress.
Operation now in progress.
Socket operation on nonsocket.
Operation not supported.
Protocol family not supported.
Protocol not supported.
Socket type not supported.
Winsock.dll version out of range.
CSocketMaster.SocketExists
CSocketMaster.PostSocket
CSocketMaster.ConnectToIP
CSocketMaster.ResolveIfHostname
CSocketMaster.SendBufferedDataUDP
CSocketMaster.SendBufferedData
sqlite3.dll
mozsqlite3.dll
sqlite3_open
sqlite3_close
sqlite3_prepare_v2
sqlite3_step
sqlite3_finalize
sqlite3_column_text
abe2869f-9b47-4cd9-a358-c22904dba7f7
/stext mess.dat
\mess.dat
/stext mail.dat
\mail.dat
SOFTWARE\MICROSOFT\Windows NT\CurrentVersion
softokn3.dll
Windows
SOFTWARE\Classes\Applications\iexplore.exe\shell\open\command
\Mozilla Firefox\
mozcrt19.dll
nspr4.dll
plc4.dll
plds4.dll
nssutil3.dll
nss3.dll
\Mozilla\Firefox\
profiles.ini
\signons.sqlite
select * from moz_logins
PK11_GetInternalKeySlot
http\shell\open\command
127.0.0.1
\dump.txt
\uTorrent\uTorrent.exe /DIRECTORY
255.255.255.255
finalizarprocessoportas
CONNECT %s:%i HTTP/1.0
SOFTWARE\Classes\http\shell\open\command
Software\Classes\http\shell\open\command
Software\Microsoft\Windows NT\CurrentVersion\SystemRestore
code.is.a.winner
Software\Microsoft\Windows\CurrentVersion\Uninstall\eMule
SOFTWARE\MICROSOFT\Windows NT\CurrentVersion\DigitalProductId
bps1.exe
bhookpl.dll
bnfa.exe
drvloadn.dll
drvloadx.dll
VNCHooks.dll
xr4tdwa.exe
shutdown.exe
TCnRawKeyBoard
HuntHTTPDownload
autorun.inf
hXXps://onlineeast#.bankofamerica.com
winlogon.exe
explorer.exe
SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\run
SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
\system32\userinit.exe,
steam.exe
hl.exe
@*\AC:\Users\Admin\Desktop_old\Blackshades project\Blackshades NET\server\server.vbp
stub.bin


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):

    %original file name%.exe:1300

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

    %Documents and Settings%\%current user%\Application Data\msnmsgrs (32 bytes)
    %Documents and Settings%\%current user%\Application Data\msnmsgrs.exe (4032 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\vbc.exe (7547 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\%original file name%.exe (1425 bytes)

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

    [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
    "msnmsgrs" = "%Documents and Settings%\%current user%\Application Data\msnmsgrs.exe"

    [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
    "msnmsgrs" = "%Documents and Settings%\%current user%\Application Data\msnmsgrs.exe"

    [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
    "Windows Update" = "%Documents and Settings%\%current user%\Local Settings\Temp\%original file name%.exe"

  5. Find and delete all copies of the worm's file together with "autorun.inf" scripts on removable drives.
  6. Reboot the computer.

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

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