MD5: 567e45c71e8cdad5e58cb786636a6ec0
SHA1: e72aa8839edbab1430b0ed21e29b81dd14205ef4
SHA256: 7cb16524418d7e384bda354d8a7a65c150fed2b55ad898877f721e80084389c2
SSDeep: 768:m B Zrc7iL HgeoU 1Dfe7Zclf2EBMEPHV:m klcO AeoU 1DC8eEmEPHV
Size: 49152 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: P i r i f o r m L t d .
Created at: no data
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

Process activity

The Trojan creates the following process(es):

%original file name%.exe:176

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

spoolsv.exe:636

File activity

The process %original file name%.exe:176 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%System%\drivers\spoolsv.exe (49 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\8XKL8N8T\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\OSFK0HBG\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\AHP4HQKJ\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\OVMJQJ2B\desktop.ini (67 bytes)

Registry activity

The process %original file name%.exe:176 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "E1 DE FB 15 94 52 8A 55 EA 29 0B 88 7D D2 56 07"

[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]
"Msn" = "C:\Windows\system32\Drivers\spoolsv.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.

VersionInfo

No information is available.

PE Sections

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):

`.rsrc

SSSh$z@

FVSSh

ddos.syn

ddos.ack

ddos.random

ddos.supersyn

ddos.udp

msn.spread

msn.msg

msn.stats

msn.addcontact

[UDP] Failed to start flood thread, error: <%d>

[UDP] Sending %d packets to: %s. Packet size: %d, Delay: %d(ms)

[DDoS]: Failed to start flood thread, error: <%d>.

%s Flooding %s:%s for %s seconds

%s Downloading update from: %s to: %s.

%seraseme_%d%d%d%d%d.exe

%s Downloading URL: %s to: %s.

%s address %s added to msn.

%s Thread Activated: Sending Message.

%s Thread Activated: Sending Zipfile.

%s Thread Activated: Sending Zipfile and Message.

%s Visiting Website Now

MSN MSG

%s Failed to parse command.

USER %s * 0 :%s

NICK %s

PASS %s

QUIT %s

PRIVMSG %s :%s

JOIN %s

JOIN %s %s

MODE %s %s %s

MODE %s %s

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

PONG %s

NICK

PRIVMSG

JOIN

icmp.dll

shlwapi.dll

ShellExecuteA

shell32.dll

Mozilla/4.0 (compatible)

InternetCrackUrlA

InternetOpenUrlA

FtpPutFileA

FtpGetFileA

HttpSendRequestA

HttpOpenRequestA

wininet.dll

ws2_32.dll

user32.dll

kernel32.dll

%s!%s@%s

%s No %s thread found.

%s %s thread stopped. (%d thread(s) stopped.)

SOFTWARE\Microsoft\Windows\CurrentVersion\Run\

%s\%s

del "%s">nul

if exist "%s" goto Repeat

ping 0.0.0.0>nul

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

[DDoS]: Send error: <%d>.

wonk.ack

wonk.syn

%s Done with flood (%iKB/sec).

%s Flooding %s:%s with %s for %s seconds

%s Bad URL or DNS Error, error: <%d>

%s Update failed: Error executing file: %s.

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

%s Created process: "%s", PID: <%d>

%s Failed to create process: "%s", error: <%d>

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

%s File download: %.1fKB to: %s @ %.1fKB/sec.

A%s Couldn't open file for writing: %s.

[UDP] Finished sending packets to %s

[UDP] Error sending udp packets to %s.

%s Failed to get requested URL from HTTP server.

%s URL visited.

%s Failed to connect to HTTP server.

%s Could not open a connection.

%s Invalid URL.

\autorun.inf

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

autorunme.exe

[.ShellClassInfo]

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

\Desktop.ini

Infected drive: %s

%s Welcome Bitch.

%s Fail.

%s %s out.

%s <%i> out.

%s No user at: <%i>

%s Invalid slot: <%i>

%s Kill: <%d> threads

%s No threads

%s Killed thread: <%s>

%s %s already running: <%d>.

%s Fail start %s, err: <%d>.

[msn]: Message & Zipfile sent to: %d contacts.

[msn]: Message sent to: %d Contacts.

[msn]: Sent Stats - Messages: %d :: Files: %d :: Message & Files: %d.

Go fuck yourself %s.

%s logged in.

Removed by: %s!%s@%s

%s main thread

%s mis param.

C:\Windows\system32\Drivers\

spoolsv.exe

*@nasa.gov

ircd.novaraja.org

ircd.grandetrivic.com

GetWindowsDirectoryA

RegCreateKeyExA

RegCloseKey

_acmdln

_amsg_exit

keybd_event

VkKeyScanA

.text

`.rdata

@.data

.rsrc

mGuperQOudpv

[UDP] F

^ror: <%d>_Se

URLwt

VeuWeb

PASSQUIT

-myJOIN

UrlA'O:k`

rGFtpPL

e7P HTTP

up,.eU7

=%SynmR

*@nasa.govX

SKey

5_>keybdv

.MN
KERNEL32.DLL
ADVAPI32.dll
MSVCR71.dll
ole32.dll
OLEAUT32.dll
SHELL32.dll
USER32.dll
WS2_32.dll

spoolsv.exe_636_rwx_00400000_00052000:


`.rsrc
SSSh$z@
FVSSh
ddos.syn
ddos.ack
ddos.random
ddos.supersyn
ddos.udp
msn.spread
msn.msg
msn.stats
msn.addcontact
[UDP] Failed to start flood thread, error: <%d>
[UDP] Sending %d packets to: %s. Packet size: %d, Delay: %d(ms)
[DDoS]: Failed to start flood thread, error: <%d>.
%s Flooding %s:%s for %s seconds
%s Downloading update from: %s to: %s.
%seraseme_%d%d%d%d%d.exe
%s Downloading URL: %s to: %s.
%s address %s added to msn.
%s Thread Activated: Sending Message.
%s Thread Activated: Sending Zipfile.
%s Thread Activated: Sending Zipfile and Message.
%s Visiting Website Now
MSN MSG
%s Failed to parse command.
USER %s * 0 :%s
NICK %s
PASS %s
QUIT %s
PRIVMSG %s :%s
JOIN %s
JOIN %s %s
MODE %s %s %s
MODE %s %s
Ping Timeout? (%d-%d)%d/%d
PONG %s
NICK
PRIVMSG
JOIN
icmp.dll
shlwapi.dll
ShellExecuteA
shell32.dll
Mozilla/4.0 (compatible)
InternetCrackUrlA
InternetOpenUrlA
FtpPutFileA
FtpGetFileA
HttpSendRequestA
HttpOpenRequestA
wininet.dll
ws2_32.dll
user32.dll
kernel32.dll
%s!%s@%s
%s No %s thread found.
%s %s thread stopped. (%d thread(s) stopped.)
SOFTWARE\Microsoft\Windows\CurrentVersion\Run\
%s\%s
del "%s">nul
if exist "%s" goto Repeat
ping 0.0.0.0>nul
%s\removeMe%i%i%i%i.bat
[DDoS]: Send error: <%d>.
wonk.ack
wonk.syn
%s Done with flood (%iKB/sec).
%s Flooding %s:%s with %s for %s seconds
%s Bad URL or DNS Error, error: <%d>
%s Update failed: Error executing file: %s.
%s Process Finished: "%s", Total Running Time: %s.
%s Created process: "%s", PID: <%d>
%s Failed to create process: "%s", error: <%d>
%s Couldn't parse path, error: <%d>
%s File download: %.1fKB to: %s @ %.1fKB/sec.
A%s Couldn't open file for writing: %s.
[UDP] Finished sending packets to %s
[UDP] Error sending udp packets to %s.
%s Failed to get requested URL from HTTP server.
%s URL visited.
%s Failed to connect to HTTP server.
%s Could not open a connection.
%s Invalid URL.
\autorun.inf
icon=%SystemRoot%\system32\SHELL32.dll,4
autorunme.exe
[.ShellClassInfo]
CLSID={645FF040-5081-101B-9F08-00AA002F954E}
\Desktop.ini
Infected drive: %s
%s Welcome Bitch.
%s Fail.
%s %s out.
%s <%i> out.
%s No user at: <%i>
%s Invalid slot: <%i>
%s Kill: <%d> threads
%s No threads
%s Killed thread: <%s>
%s %s already running: <%d>.
%s Fail start %s, err: <%d>.
[msn]: Message & Zipfile sent to: %d contacts.
[msn]: Message sent to: %d Contacts.
[msn]: Sent Stats - Messages: %d :: Files: %d :: Message & Files: %d.
Go fuck yourself %s.
%s logged in.
Removed by: %s!%s@%s
%s main thread
%s mis param.
C:\Windows\system32\Drivers\
spoolsv.exe
*@nasa.gov
ircd.novaraja.org
ircd.grandetrivic.com
GetWindowsDirectoryA
RegCreateKeyExA
RegCloseKey
_acmdln
_amsg_exit
keybd_event
VkKeyScanA
.text
`.rdata
@.data
.rsrc
mGuperQOudpv
[UDP] F
^ror: <%d>_Se
URLwt
VeuWeb
PASSQUIT
-myJOIN
UrlA'O:k`
rGFtpPL
e7P HTTP
up,.eU7
=%SynmR
*@nasa.govX
SKey
5_>keybdv
.MN
KERNEL32.DLL
ADVAPI32.dll
MSVCR71.dll
ole32.dll
OLEAUT32.dll
SHELL32.dll
USER32.dll
WS2_32.dll

spoolsv.exe_636_rwx_004A0000_00023000:


.text
.data
.rdata
@.bss
.edata
@.idata
.rsrc
.reloc
(Y.izCa
w86$V.ii
-0A294}\A
*ns.oX^s'
H%s3\HLw4/ha=
/build/buildd/mingw32-3.4.5.20060117.1.dfsg/build_dir/src/gcc-3.4.5-20060117-1-dfsg/gcc/config/i386/w32-shared-ptr.c
result.exe
GetProcessHeap
KERNEL32.dll
msvcrt.dll
kernel32.dll

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:176
   

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

   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
   %System%\drivers\spoolsv.exe (49 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\8XKL8N8T\desktop.ini (67 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\OSFK0HBG\desktop.ini (67 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\AHP4HQKJ\desktop.ini (67 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\OVMJQJ2B\desktop.ini (67 bytes)

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

   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   "Msn" = "C:\Windows\system32\Drivers\spoolsv.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.