Gen.Variant.MSIL.Cassiopeia.4_a7aa0ab76d – Adaware

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: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.

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:1300
Delete the original Trojan file.
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)
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"
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.

Static Analysis

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)

Company Name: Keygen.exeProduct Name: Keygen.exeProduct Version: 1.0.0.0Legal Copyright: Keygen.exeLegal Trademarks: Keygen.exeOriginal Filename: tempKeygen.exeInternal Name: tempKeygen.exeFile Version: 1.0.0.0File Description: Keygen.exeComments: Keygen.exeLanguage: 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:

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

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: