MD5: d8369e882546f3dc3772030d1bea3650
SHA1: 4d5bbd70469a40929831e5698058d35b43fe3407
SHA256: bfecd161e97dd9b4d8812b26e39f3020d1d0a88d39e85dea2597907d350923ba
SSDeep: 1536:vlrtIPBliPYp6L9 LjGWUEnKyg8ayNYd0LP:vlePB8Y6LsLCWUupv
Size: 60929 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: no data
Analyzed on: WindowsXP SP3 32-bit

Summary:

Virus. A program that recursively replicates a possibly evolved copy of itself.

Payload

Process activity

The Virus creates the following process(es):

dwwin.exe:276
%original file name%.exe:1716

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

yyyryry.cmd:224

File activity

The process dwwin.exe:276 makes changes in the file system.
The Virus creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\FAC44.dmp (71722 bytes)

The process %original file name%.exe:1716 makes changes in the file system.
The Virus creates and/or writes to the following file(s):

%WinDir%\xwrm.exe (60 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\a0dc_appcompat.txt (6214 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\yjrrzi.iirqbiqj (60 bytes)

The process yyyryry.cmd:224 makes changes in the file system.
The Virus creates and/or writes to the following file(s):

%System%\WindowsUpdt.exe (19 bytes)

Registry activity

The process dwwin.exe:276 makes changes in the system registry.
The Virus creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "16 36 FE 1F 55 65 2D 30 C2 25 03 B7 C1 B1 6B CA"

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

[HKLM\System\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

[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"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"MigrateProxy" = "1"

[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\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"

[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]
"AppData" = "%Documents and Settings%\%current user%\Application Data"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 19 00 00 00 01 00 00 00 00 00 00 00"

[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"

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

Proxy settings are disabled:

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

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

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

The process %original file name%.exe:1716 makes changes in the system registry.
The Virus creates and/or sets the following values in system registry:
To automatically run itself each time Windows is booted, the Virus adds the following link to its file to the system registry autorun key:

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"x32x" = "%WinDir%\xwrm.exe"

The Virus deletes the following registry key(s):

[HKLM\SOFTWARE\Microsoft\PCHealth\ErrorReporting\DW]

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

[HKLM\SOFTWARE\Microsoft\PCHealth\ErrorReporting\DW]
"DWFileTreeRoot"

The process yyyryry.cmd:224 makes changes in the system registry.
The Virus creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "24 3A 50 07 11 C2 E5 CC AB 01 0A 48 04 7C BB FD"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"WihdowsUpdate" = "%System%\WindowsUpdt.exe"

Dropped PE files

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

VersionInfo

No information is available.

PE Sections

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

URLs

URL	IP
irc.undernet.org	91.236.182.1

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

ET CNC Shadowserver Reported CnC Server IP group 3
ET CNC Shadowserver Reported CnC Server IP group 45
ET CHAT IRC USER command
ET CHAT IRC PONG response
ET CHAT IRC PING command
ET CHAT IRC NICK command

Traffic

;eE%f;

\xwrm.exe

%WinDir%\xwrm.exe

Software\Microsoft\Windows\CurrentVersion\Run

USER %s 8 * :%s

NICK %s

PONG %s

JOIN #england

PRIVMSG #england :.-:[X-Worm]:-.

irc.undernet.org

MAIL FROM:<%s>

RCPT TO:<%s>

--%s--

From:<%s>

To: %s

Subject:%s

boundary="%s"

X-Mailer: Microsoft Outlook Express 6.00.2800.1106

X-MimeOLE: Produced By Microsoft MimeOLE V6.00.2800.1106

charset="windows-1255"

name= "%s%s"

Content-Disposition: attachment; filename="%s%s"

Support

No.reply

8.txtt:

8.htmt2

8.rtft*

8.doct"

8.bdxt

8.phpt

8.jspt

8.cgit

smtp

ws2_32.dll

ADVAPI32.DLL

RegOpenKeyExA

RegCloseKey

User32.dll

fs_snap.exe

arnsec.exe

ISABL~1.EXE

8.exe

8.scrtt

8.avitJ

8.doctB

8.mp3t:

8.mpgt2

8.xlst*

8.jpgt"

8.zipt

8.isot

8.pdft

8.pptt

8.rart

D:\fs_snap.exe

SFC.DLL

Pjjaiqq.rrzr

D:\jjaiqq.rrzr

ReadMe.exe

c:\%original file name%.exe

C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\yjrrzi.iirqbiqj

WinExec

GetWindowsDirectoryA

FPTBAWDRF-INOCPANDANTIAMONN32SNOD3NPSSSMSSSCANZONEPROTMONIRWEBMIRCCKDOTROJSAFEJEDITRAYANDASPIDPLORNDLLTRENNSPLNSCHSYSTALERj

yyyryry.cmd

.text

.rsrc

gu>%uM

~nt.ex

CrToMaPh

hPRIVMSG %s :

kernel32.dll

.%suld nb

KERNEL32.dll

2'3.3`3}3

0M1e1w1}1-2x2

yyyryry.cmd_224:

.text

.rsrc

\WindowsUpdt.exe

irc.undernet.org

__MSVCRT_HEAP_SELECT

user32.dll

WinExec

KERNEL32.dll

USER32.dll

RegCloseKey

RegOpenKeyExA

ADVAPI32.dll

WS2_32.dll

InternetOpenUrlA

WININET.dll

GetCPInfo

url1.dat

PRIVMSG %s :Operations Stoped

PRIVMSG %s :Wasting %s

PRIVMSG %s :Udp Floding %s

-!udp_flood

PRIVMSG %s :%s Downloaded&executed

1.exe

-!download_exe

PRIVMSG %s :Login Success

-!login

PRIVMSG

%*s %s %*s %s %s %s

MODE %s  nsk %s

JOIN %s %s

PONG %s

NICK %s

USER %s 8 * :%s

Software\Microsoft\Windows\CurrentVersion\Run

2372057707

D:\yyyryry.cmd

kernel32.dll

.%suld nb

yyyryry.cmd_224_rwx_00401000_0000F000:

\WindowsUpdt.exe

irc.undernet.org

__MSVCRT_HEAP_SELECT

user32.dll

WinExec

KERNEL32.dll

USER32.dll

RegCloseKey

RegOpenKeyExA

ADVAPI32.dll

WS2_32.dll

InternetOpenUrlA

WININET.dll

GetCPInfo

url1.dat

PRIVMSG %s :Operations Stoped

PRIVMSG %s :Wasting %s

PRIVMSG %s :Udp Floding %s

-!udp_flood

PRIVMSG %s :%s Downloaded&executed

1.exe

-!download_exe

PRIVMSG %s :Login Success

-!login

PRIVMSG

%*s %s %*s %s %s %s

MODE %s  nsk %s

JOIN %s %s

PONG %s

NICK %s

USER %s 8 * :%s

Software\Microsoft\Windows\CurrentVersion\Run

2372057707

D:\yyyryry.cmd

kernel32.dll

.%suld nb

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):
   

   dwwin.exe:276
   %original file name%.exe:1716
   

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

   %Documents and Settings%\%current user%\Local Settings\Temp\FAC44.dmp (71722 bytes)
   %WinDir%\xwrm.exe (60 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\a0dc_appcompat.txt (6214 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\yjrrzi.iirqbiqj (60 bytes)
   %System%\WindowsUpdt.exe (19 bytes)

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

   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   "x32x" = "%WinDir%\xwrm.exe"
   
   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   "WihdowsUpdate" = "%System%\WindowsUpdt.exe"

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

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