Virus.Win32.Duel_a68be1a696 – Adaware

Dynamic Analysis

Payload

Behaviour	Description
EmailWorm	Worm can send e-mails.
IRCBot	A bot can communicate with command and control servers via IRC channel.

Process activity

The Virus creates the following process(es):

dwwin.exe:560
%original file name%.exe:1796

The Virus injects its code into the following process(es):No processes have been created.

File activity

The process dwwin.exe:560 makes changes in the file system.

The Virus 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)
%Documents and Settings%\%current user%\Local Settings\Temp\AF58A.dmp (78368 bytes)

The process %original file name%.exe:1796 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\ebd4_appcompat.txt (6214 bytes)
%Documents and Settings%\%current user%\Templates\excel.xls (666 bytes)
%Documents and Settings%\%current user%\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\yjzbyjaya.yarzbyq.qjb (601 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\rrrria.izj.aary (104 bytes)
%Documents and Settings%\%current user%\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\Reader9\qjyzbzbyq.qjb (601 bytes)
%WinDir%\xwrm.exe (601 bytes)

Registry activity

The process dwwin.exe:560 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "78 09 44 14 C8 07 95 C2 47 93 21 63 21 42 37 0B"

[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 1E 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:1796 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "B7 B1 F3 89 41 5B 3D E4 60 CD F0 74 D3 93 B0 3C"

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"

Dropped PE files

MD5	File path
dd99c13d3924847e1f6a020a51823297	c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\Reader9\qjyzbzbyq.qjb
dd99c13d3924847e1f6a020a51823297	c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\yjzbyjaya.yarzbyq.qjb
dd99c13d3924847e1f6a020a51823297	c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\rrrria.izj.aary
dd99c13d3924847e1f6a020a51823297	c:\WINDOWS\xwrm.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

Propagation

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):
dwwin.exe:560
%original file name%.exe:1796
Delete the original Virus file.
Delete or disinfect the following files created/modified by the Virus:
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\AF58A.dmp (78368 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\ebd4_appcompat.txt (6214 bytes)
%Documents and Settings%\%current user%\Templates\excel.xls (666 bytes)
%Documents and Settings%\%current user%\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\yjzbyjaya.yarzbyq.qjb (601 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\rrrria.izj.aary (104 bytes)
%Documents and Settings%\%current user%\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\Reader9\qjyzbzbyq.qjb (601 bytes)
%WinDir%\xwrm.exe (601 bytes)
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"

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

Static Analysis

VersionInfo

No information is available.

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
qajqrzqy	4096	4096	1536	0.67347	6418f2ee81458cd079564c21ec5fed6c
jaaariza	8192	32768	32256	4.40632	8e1304bec89f72985c236be4e75fabc8
rrrziiir	40960	4096	512	0.468013	03990ce32513f25d3855296b7bc8aa4d
rqyrabrr	45056	4096	2048	3.92473	6481060bb77e469e5fdb95d8e5c6ab31
ararqqjy	49152	61440	61440	5.35896	af1e1ae8ab12cd9118aa6656063eec94

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

Strings from Dumps

%original file name%.exe_1796:

\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

excel.xls

ia Player.lnk

Commander.lnk

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

c:\Documents and Settings\"%CurrentUserName%"\Templates\excel.xls

indows Media Player.lnk

or Repair Total Commander.lnk

34_all_incr.msp

5ed9567-aa58-4c8e-a8ea-3cad7c47ab03

SFC.DLL

WinExec

yjzbyjaya.yar

c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\yjzbyjaya.yarzbyq.qjb

ReadMe.exe

c:\%original file name%.exe

dc1e038769a18baac8d80357541396.exe

C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\rrrria.izj.aary

GetWindowsDirectoryA

FPTBAWDRF-INOCPANDANTIAMONN32SNOD3NPSSSMSSSCANZONEPROTMONIRWEBMIRCCKDOTROJSAFEJEDITRAYANDASPIDPLORNDLLTRENNSPLNSCHSYSTALERj

KERNEL32.dll

=Wy.Ef

hV.DK

OCmDz

-riv%S

5j3.bs

.Us)5

c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Application Data\Adobe\Reader 9.3\Setup Files\Setup.exe

Summary

Dynamic Analysis

Removals

Static Analysis

Network Activity

Map

Strings from Dumps