Gen.Variant.Dropper.48_d61befb144

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

tasklist.exe:352
%original file name%.exe:1300
oo.exe:1788
pvc32.exe:1268
m6PEES9OLyE21U.exe:968

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

xaufuoz.exe:1988
mscorsvw.exe:1912
pp.exe:1988
Explorer.EXE:128
svchost.exe:1096
spoolsv.exe:1424

Mutexes

The following mutexes were created/opened:No objects were found.

File activity

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%\pp.exe (32 bytes)
%Documents and Settings%\%current user%\m6PEES9OLyE21U.exe (267 bytes)
%Documents and Settings%\%current user%\pvc32.exe (1568 bytes)
%Documents and Settings%\%current user%\oo.exe (628 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\7zS3F.tmp (0 bytes)

The process oo.exe:1788 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\40.tmp (673 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\41.tmp (0 bytes)

The process pvc32.exe:1268 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)

The process m6PEES9OLyE21U.exe:968 makes changes in the file system.

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

%Documents and Settings%\%current user%\xaufuoz.exe (1991786 bytes)

Registry activity

The process xaufuoz.exe:1988 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "D2 3E D8 86 1F F4 95 33 A6 4E 1E 89 BA 38 3F 47"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced]
"ShowSuperHidden" = "0"

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]
"xaufuoz" = "%Documents and Settings%\%current user%\xaufuoz.exe /S"

The process tasklist.exe:352 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "2E 9A 8C 66 60 C2 BE C6 DC 40 CC 5C B1 3E D8 3E"

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" = "D8 16 9F 54 50 CC E1 9E 8E 93 C9 59 93 79 2A 5E"

The process oo.exe:1788 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "8C 03 BE FA 3B 53 42 B7 65 07 9B 04 40 2E 2B 34"

[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"ID" = "1305799195"

[HKLM\System\CurrentControlSet\Control\Session Manager]
"PendingFileRenameOperations" = "\??\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\42.tmp,"

[HKLM\SOFTWARE\Microsoft\DirectDraw\MostRecentApplication]
"Name" = "oo.exe"

The process pvc32.exe:1268 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "00 31 90 FA 3F 7E DC AF BB 3F BF 8F BA B2 AE 56"

[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"

The process pp.exe:1988 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "EB 46 BF AA 8A 81 27 3A E5 D9 02 0F 04 4D 5F AE"

The process m6PEES9OLyE21U.exe:968 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "4B D7 B3 3C D2 EF 8C 82 3F 65 C5 95 AE CF 53 FB"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Documents and Settings%\%current user%]
"xaufuoz.exe" = "xaufuoz"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Desktop" = "%Documents and Settings%\All Users\Desktop"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

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

The Trojan modifies IE settings for security zones to map all urls to the Intranet Zone:

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

The Trojan modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:

"UNCAsIntranet" = "1"

The Trojan modifies IE settings for security zones to map all web-nodes that bypassing the proxy to the Intranet Zone:

"ProxyBypass" = "1"

Dropped PE files

MD5	File path
e3cbda2e8e9e96c2107c7d8c6ff7aa19	c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\42.tmp
910d69dc52721a9e6e4892188b232003	c:\Documents and Settings\"%CurrentUserName%"\pvc32.exe
2d08465dbcc2fd3e4e6539063f2be641	c:\Documents and Settings\"%CurrentUserName%"\xaufuoz.exe
8d3f38dd07dc5e58a60d4aa14f2f454a	c:\WINDOWS\Temp\44.tmp

HOSTS file anomalies

No changes have been detected.

Rootkit activity

Using the driver "UNKNOWN" the Trojan controls loading executable images into a memory by installing the Load image notifier.

Using the driver ROOTKITPATH the Trojan intercepts DriverStartIO in a miniport driver of a hard drive controller (ATAPI) to handle request to its own files:

StartIo

Propagation

Removals

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. Scan a system with an anti-rootkit tool.
   
2. Terminate malicious process(es) (How to End a Process With the Task Manager):

   tasklist.exe:352
   %original file name%.exe:1300
   oo.exe:1788
   pvc32.exe:1268
   m6PEES9OLyE21U.exe:968
   

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

   %Documents and Settings%\%current user%\pp.exe (32 bytes)
   %Documents and Settings%\%current user%\m6PEES9OLyE21U.exe (267 bytes)
   %Documents and Settings%\%current user%\pvc32.exe (1568 bytes)
   %Documents and Settings%\%current user%\oo.exe (628 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\40.tmp (673 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
   %Documents and Settings%\%current user%\xaufuoz.exe (1991786 bytes)

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

   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "xaufuoz" = "%Documents and Settings%\%current user%\xaufuoz.exe /S"

6. Reboot the computer.
   

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

Static Analysis

VersionInfo

No information is available.

No information is available.

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	4096	192003	192512	4.09144	dd38ffc9a2099797e71e3b47281034c5
.rdata	196608	22730	23040	2.82888	5b83f73fc6bb93013eea5bd0d2f44e40
.data	221184	10572	2048	2.55318	e78b40d7d8d0fb129c9ecff181b5bd9a
.rsrc	233472	1858	2048	2.31893	938b41fadfa6640cea15513602802ede

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

pvc32.exe_1268:

.text

.text

`.data

`.data

.rsrc

.rsrc

MSVBVM60.DLL

MSVBVM60.DLL

}#$##$$$

}#$##$$$

} / //00&&()#

} / //00&&()#

];

];

SHDocVwCtl.WebBrowser

SHDocVwCtl.WebBrowser

(7),01444

(7),01444

'9=82<.342>

'9=82<.342>

OE.yw

OE.yw

[`%x,

[`%x,

ieframe.dll

ieframe.dll

WebBrowser

WebBrowser

VBA6.DLL

VBA6.DLL

%Program Files%\Microsoft Visual Studio\VB98\VB6.OLB

%Program Files%\Microsoft Visual Studio\VB98\VB6.OLB

SsF}_%System%\ieframe.oca

SsF}_%System%\ieframe.oca

pasSeconds

pasSeconds

pvc32.exe

pvc32.exe

xaufuoz.exe_1988:

.text

.text

`.data

`.data

.rsrc

.rsrc

MSVBVM60.DLL

MSVBVM60.DLL

%Program Files%\Microsoft Visual Studio\VB98\VB6.OLB

%Program Files%\Microsoft Visual Studio\VB98\VB6.OLB

VBA6.DLL

VBA6.DLL

ZmfuJkzQmTtcRN.exe

ZmfuJkzQmTtcRN.exe

Explorer.EXE_128_rwx_00E70000_0000A000:

PSSht4

PSSht4

.exeu]

.exeu]

%skxyyp.php?adv=adv414&code1=%s&code2=%s&id=%d&p=%s&b=%s&c=%d

%skxyyp.php?adv=adv414&code1=%s&code2=%s&id=%d&p=%s&b=%s&c=%d

Chrome

Chrome

Firefox

Firefox

Opera

Opera

%syjeqmxs.exe

%syjeqmxs.exe

%slmzdd.php?adv=adv414&id=%d&c=%d

%slmzdd.php?adv=adv414&id=%d&c=%d

%shuwhjcx.exe

%shuwhjcx.exe

%swjwwnae.php?adv=adv414&id=%d&c=%d

%swjwwnae.php?adv=adv414&id=%d&c=%d

%svlnjwlil.exe

%svlnjwlil.exe

%svvvmmddhvl.php?adv=adv414&id=%d&c=%d

%svvvmmddhvl.php?adv=adv414&id=%d&c=%d

%sdfojmv.exe

%sdfojmv.exe

%shhlycptx.php?adv=adv414&id=%d&c=%d

%shhlycptx.php?adv=adv414&id=%d&c=%d

%strqwcc.exe

%strqwcc.exe

%ssbsfwao.php?adv=adv414&id=%d&c=%d

%ssbsfwao.php?adv=adv414&id=%d&c=%d

%sbebcklqy.exe

%sbebcklqy.exe

%suhhymdqu.php?adv=adv414&id=%d&c=%d

%suhhymdqu.php?adv=adv414&id=%d&c=%d

%sjcxwpv.exe

%sjcxwpv.exe

%sivjwneei.php?adv=adv414&id=%d&c=%d

%sivjwneei.php?adv=adv414&id=%d&c=%d

%sojsbbw.exe

%sojsbbw.exe

%sbosgwxbeff.php?adv=adv414&id=%d&c=%d

%sbosgwxbeff.php?adv=adv414&id=%d&c=%d

%sogqpmmg.exe

%sogqpmmg.exe

%sscctgxkbb.php?adv=adv414&id=%d&c=%d

%sscctgxkbb.php?adv=adv414&id=%d&c=%d

%sqrls.exe

%sqrls.exe

%slyyyzdduh.php?adv=adv414&id=%d&c=%d

%slyyyzdduh.php?adv=adv414&id=%d&c=%d

%sapfnemre.exe

%sapfnemre.exe

%snnrfjmqeh.php?adv=adv414&id=%d&c=%d

%snnrfjmqeh.php?adv=adv414&id=%d&c=%d

%svvvjzar.php?adv=adv414&id=%d&c=%d

%svvvjzar.php?adv=adv414&id=%d&c=%d

hXXp://balegion.com/bdqqu/

hXXp://balegion.com/bdqqu/

hXXp://aaaholic.com/bdqqu/

hXXp://aaaholic.com/bdqqu/

psapi.dll

psapi.dll

ddraw.dll

ddraw.dll

urlmon.dll

urlmon.dll

shell32.dll

shell32.dll

kernel32.dll

kernel32.dll

user32.dll

user32.dll

wininet.dll

wininet.dll

ntdll.dll

ntdll.dll

\svchost.exe

\svchost.exe

explorer.exe

explorer.exe

%Documents and Settings%\%current user%\pp.exe

%Documents and Settings%\%current user%\pp.exe

ShellExecuteExA

ShellExecuteExA

InternetOpenUrlA

InternetOpenUrlA

.text

.text

`.rdata

`.rdata

@.data

@.data

.reloc

.reloc

&ew%.YY

&ew%.YY

ver74%skxyyp.php?adv=

ver74%skxyyp.php?adv=

SafariChromeFiref

SafariChromeFiref

r[z`.rd

r[z`.rd

KERNEL32.DLL

KERNEL32.DLL

ADVAPI32.dll

ADVAPI32.dll

DDRAW.dll

DDRAW.dll

PSAPI.DLL

PSAPI.DLL

SHELL32.dll

SHELL32.dll

SHLWAPI.dll

SHLWAPI.dll

USER32.dll

USER32.dll

WININET.dll

WININET.dll

svchost.exe_1096_rwx_01730000_00014000:

hXXp://%s/?xurl=%s&xref=%s

hXXp://%s/?xurl=%s&xref=%s

winmm.dll

winmm.dll

ole32.dll

ole32.dll

maxhttpredirects

maxhttpredirects

software\microsoft\windows\currentversion\internet settings

software\microsoft\windows\currentversion\internet settings

enablehttp1_1

enablehttp1_1

software\microsoft\windows\currentversion\internet settings\zones\3

software\microsoft\windows\currentversion\internet settings\zones\3

%s\%s

%s\%s

clk=%s&bid=%s&aid=%s&sid=%s&rd=%s

clk=%s&bid=%s&aid=%s&sid=%s&rd=%s

atl.dll

atl.dll

oleaut32.dll

oleaut32.dll

n%D,3

n%D,3

%d|%d|%s|%s

%d|%d|%s|%s

Mozilla/4.0 (compatible; MSIE 1.0; Windows NT; CMD3)

Mozilla/4.0 (compatible; MSIE 1.0; Windows NT; CMD3)

%s%s|%s|%s|%s

%s%s|%s|%s|%s

DownloadAndExecute

DownloadAndExecute

DownloadCryptedAndExecute

DownloadCryptedAndExecute

DownloadCryptedAndExecute2

DownloadCryptedAndExecute2

CmdExec

CmdExec

%s%s|%s|%d|%.8s

%s%s|%s|%d|%.8s

%[^.].%[^(](%[^)])

%[^.].%[^(](%[^)])

command|%s|%s|%s|%s|%s|%s|%s|%s|%s|%s|%s

command|%s|%s|%s|%s|%s|%s|%s|%s|%s|%s|%s

CmdExecMain

CmdExecMain

_CmdExecServers

_CmdExecServers

%s%s|%s|%s

%s%s|%s|%s

setup.exe

setup.exe

google;yahoo;bing.;live.com;msn.com;altavista.com;ask.com;exalead.com;excite.com;dogpile.com;metacrawler.com;webcrawler.com;alltheweb.com;.lycos.;gigablast.com;cuil.com;.aol.;entireweb.com;.search.com;mamma.com;mytalkingbuddy.com;about.com;conduit.com;alexa.com;alltheinternet.com;blinkx.com;aolcdn.com;othersonline.com;everesttech.net;adrevolver.com;tribalfusion.com;adbureau.net;abmr.net;gstatic.com;virtualearth.net;atdmt.com;ivwbox.;powerset.net;yimg.com;2mdn.net;doubleclick.net;iwon.com;scorecardresearch.com;66.235.120.66;66.235.120.67;ytimg.com;infospace.com;edgesuite.net;superpages.com;lygo.com;compete.com;firmserve.com;worthathousandwords.com;yieldmanager.com;wazizu.com;meedea.com;atwola.com;doubleverify.com;tacoda.net;truveo.com;openx.org;adcertising.com;twimg.com;picsearch.com;oneriot.com;.com.com;flickr.com;searchvideo.com;.tqn.com;myspacecdn.com;fimservecdn.com;alexametrics.com

google;yahoo;bing.;live.com;msn.com;altavista.com;ask.com;exalead.com;excite.com;dogpile.com;metacrawler.com;webcrawler.com;alltheweb.com;.lycos.;gigablast.com;cuil.com;.aol.;entireweb.com;.search.com;mamma.com;mytalkingbuddy.com;about.com;conduit.com;alexa.com;alltheinternet.com;blinkx.com;aolcdn.com;othersonline.com;everesttech.net;adrevolver.com;tribalfusion.com;adbureau.net;abmr.net;gstatic.com;virtualearth.net;atdmt.com;ivwbox.;powerset.net;yimg.com;2mdn.net;doubleclick.net;iwon.com;scorecardresearch.com;66.235.120.66;66.235.120.67;ytimg.com;infospace.com;edgesuite.net;superpages.com;lygo.com;compete.com;firmserve.com;worthathousandwords.com;yieldmanager.com;wazizu.com;meedea.com;atwola.com;doubleverify.com;tacoda.net;truveo.com;openx.org;adcertising.com;twimg.com;picsearch.com;oneriot.com;.com.com;flickr.com;searchvideo.com;.tqn.com;myspacecdn.com;fimservecdn.com;alexametrics.com

HTTP/1.1 302 Found

HTTP/1.1 302 Found

Location: %s

Location: %s

HTTP/1.1 200 OK

HTTP/1.1 200 OK

Content-Length: %d

Content-Length: %d

%sConnection: close

%sConnection: close

Set-Cookie: %s; expires=%s, u-%s-u u:u:u GMT

Set-Cookie: %s; expires=%s, u-%s-u u:u:u GMT

bckfg.tmp

bckfg.tmp

hXXp://95.143.193.171/

hXXp://95.143.193.171/

dkmks.tmp

dkmks.tmp

cfg.ini

cfg.ini

urlmon.dll

urlmon.dll

chrome

chrome

%s|%s|%s|%s|%s|%s|%s|%s

%s|%s|%s|%s|%s|%s|%s|%s

hXXp://95.143.193.138/xxxx_5/

hXXp://95.143.193.138/xxxx_5/

svchost.exe

svchost.exe

Global\9e6af8f3-75f3-4b67-877a-c80125d7bc08

Global\9e6af8f3-75f3-4b67-877a-c80125d7bc08

update|%s

update|%s

firefox

firefox

opera

opera

Global\a68d7de8-eba6-4a54-90e0-9cb9d93b3ed7

Global\a68d7de8-eba6-4a54-90e0-9cb9d93b3ed7

Global\cc51461b-e32a-4883-8e97-e0706dc65415

Global\cc51461b-e32a-4883-8e97-e0706dc65415

keywords

keywords

Accept-Language: %s

Accept-Language: %s

%s hXXp://%s/?xurl=%s&xref=%s

%s hXXp://%s/?xurl=%s&xref=%s

%s %s

%s %s

1.6|%s|%s|%s|%s|%s|%s

1.6|%s|%s|%s|%s|%s|%s

0123456789

0123456789

software\classes\http\shell\open\command

software\classes\http\shell\open\command

:"/\|?*

:"/\|?*

%s-%s

%s-%s