MD5: 8ebf73547148fef6a8514c66d87775c8
SHA1: 0bd911dadba752560ebfdcfeb791c620ef344a00
SHA256: 03f3e85f53772b86aed05ce1edd0940a6895e3c7f04ea88393b5ad07ee314bb1
SSDeep: 1536:SOUCnF4a1XNLaEWXg0D3d29QG0wAUv3niztVYliwCzlGHu:SOFFP11aEWQ0BUQnmnJpCzkHu
Size: 127488 bytes
File type: EXE
Platform: WIN32
Entropy: Not Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2013-05-28 22:11:39
Analyzed on: Windows7 SP1 32-bit

Summary:

Trojan. A program that appears to do one thing but actually does another (a.k.a. Trojan Horse).

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:2936
svcnost.exe:1692

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

svcnost.exe:2616

Mutexes

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

File activity

The process %original file name%.exe:2936 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

C:\Windows\System32\drivers\etc\hosts (5 bytes)

The Trojan deletes the following file(s):

C:\Windows\System32\drivers\etc\hosts (0 bytes)

The process svcnost.exe:2616 makes changes in the file system.
The Trojan creates and/or writes to the following file(s):

C:\Users\"%CurrentUserName%"\AppData\Roaming\ntuser.dat (112 bytes)
C:\Users\"%CurrentUserName%"\AppData\Roaming\desktop.ini (21 bytes)

Registry activity

The process %original file name%.exe:2936 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:
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]
"Windows Init" = "C:\Users\"%CurrentUserName%"\AppData\Roaming\xs3jqv1l3xougzaxxmjfkslczmaxbzxw2\svcnost.exe"

The process svcnost.exe:2616 makes changes in the system registry.
The Trojan creates and/or sets the following values in system registry:

[HKLM\System\CurrentControlSet\services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List\C:\Users\"%CurrentUserName%"\AppData\Roaming\xs3jqv1l3xougzaxxmjfkslczmaxbzxw2]
"svcnost.exe" = "C:\Users\"%CurrentUserName%"\AppData\Roaming\xs3jqv1l3xougzaxxmjfkslczmaxbzxw2\svcnost.exe:*:Enabled:ldrsoft"

[HKCU\Software\Microsoft\Internet Explorer\LowRegistry]
"SavedLegacySettingsML" = "31 30 32 32 31 38 33 35 32"

Dropped PE files

HOSTS file anomalies

The Trojan modifies "%System%\drivers\etc\hosts" file which is used to translate DNS entries to IP addresses.
The modified file is 5915 bytes in size. The following strings are added to the hosts file listed below:

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
dns.msftncsi.com	131.107.255.255

IDS verdicts (Suricata alerts: Emerging Threats ET ruleset)

Traffic

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

`.rsrc

kernel32.dll

PSAPI.dll

shell32.dll

\svcnost.exe

2\svcnost.exe"

SOFTWARE\Microsoft\Windows\CurrentVersion\Run

Windows Init

.text

`.rdata

@.data

.reloc

1.2.3

LDR.ML.STARTED

user32.dll

ws2_32.dll

RegCloseKey

RegCreateKeyA

RegEnumKeyA

RegOpenKeyA

advapi32.dll

FindCloseUrlCache

FindFirstUrlCacheEntryA

FindFirstUrlCacheEntryW

FindNextUrlCacheEntryA

wininet.dll

ole32.dll

dnsapi.dll

crypt32.dll

Mailer.dll

87.75.44.12

:9:::>:::

':::*:::

*%:*"%:*

s:\5E;

::;:::<:::<:::

9::::;::>:::

q.jlk

y.hlj

.lmD]

:*>:>:2:>:

:*>:?:*:2:

:*>:>:*:*:*

:8;8;:**

: =7::2^::2

:*==::2`::2 ::3

: =5::2\::2

:*=0::2[::2

: =7::2_::2

: =5::2]::2

(?3: ?;2,?

(?7: ?;6,?

::9:>:?:<:=:2:3:0:1:7:5: :):-:!:%:

:::;:8:9:>:?:=:3:7: :#:

;;8;9;>;<;2;6;*;";

:2:):3:);3:

;3:1:3:1;3:

;3:!:3:!;3:

;3:=:3:=;3:

;3:}:3:};3:

;3:]:3:];3:

;3:-:3:-;3:

;3:5:3:5;3:

;3:%:3:%;3:

;:::8:::9:::>:::<:::2:::6:::*:::":::

::::;:8:9:>:?:<:=:2:3:0:1:6:7:4:5:*: :(:):.:/:,:-:":#: :!:&:':$:%:

::;:8:;:::8:8:;:::8:

6h6C6V6i6

2'2-23292C2I2}2

KWindows

RegOpenKeyExA

RegCreateKeyExA

GetKeyboardType

.idata

.rdata

P.reloc

P.rsrc

>">0>5>;

]VY\URL

-EWD}I

.kRtl8wi

KERNEL32.DLL

gdi32.dll

SHFolder.dll

svcnost.exe_2616_rwx_002E1000_0001C000:

1.2.3

LDR.ML.STARTED

kernel32.dll

user32.dll

ws2_32.dll

RegCloseKey

RegCreateKeyA

RegEnumKeyA

RegOpenKeyA

advapi32.dll

FindCloseUrlCache

FindFirstUrlCacheEntryA

FindFirstUrlCacheEntryW

FindNextUrlCacheEntryA

wininet.dll

ole32.dll

dnsapi.dll

crypt32.dll

Mailer.dll

87.75.44.12

/stat1.php

/stat2.php

/smtps.php

/u.php?

/error.php?

/logacc.php

102218352

:9:::>:::

':::*:::

*%:*"%:*

s:\5E;

::;:::<:::<:::

9::::;::>:::

q.jlk

y.hlj

.lmD]

:*>:>:2:>:

:*>:?:*:2:

:*>:>:*:*:*

:8;8;:**

: =7::2^::2

:*==::2`::2 ::3

: =5::2\::2

:*=0::2[::2

: =7::2_::2

: =5::2]::2

(?3: ?;2,?

(?7: ?;6,?

::9:>:?:<:=:2:3:0:1:7:5: :):-:!:%:

:::;:8:9:>:?:=:3:7: :#:

;;8;9;>;<;2;6;*;";

:2:):3:);3:

;3:1:3:1;3:

;3:!:3:!;3:

;3:=:3:=;3:

;3:}:3:};3:

;3:]:3:];3:

;3:-:3:-;3:

;3:5:3:5;3:

;3:%:3:%;3:

;:::8:::9:::>:::<:::2:::6:::*:::":::

::::;:8:9:>:?:<:=:2:3:0:1:6:7:4:5:*: :(:):.:/:,:-:":#: :!:&:':$:%:

::;:8:;:::8:8:;:::8:

6h6C6V6i6

2'2-23292C2I2}2

svcnost.exe_2616_rwx_003E0000_0001A000:

kernel32.dll

uuser32.dll

huws2_32.dll

vadvapi32.dll

vwininet.dll

vole32.dll

vdnsapi.dll

tcrypt32.dll

svcnost.exe_2616_rwx_00400000_00062000:

`.rsrc

kernel32.dll

PSAPI.dll

shell32.dll

\svcnost.exe

2\svcnost.exe"

SOFTWARE\Microsoft\Windows\CurrentVersion\Run

Windows Init

.text

`.rdata

@.data

.reloc

1.2.3

LDR.ML.STARTED

user32.dll

ws2_32.dll

RegCloseKey

RegCreateKeyA

RegEnumKeyA

RegOpenKeyA

advapi32.dll

FindCloseUrlCache

FindFirstUrlCacheEntryA

FindFirstUrlCacheEntryW

FindNextUrlCacheEntryA

wininet.dll

ole32.dll

dnsapi.dll

crypt32.dll

Mailer.dll

87.75.44.12

:9:::>:::

':::*:::

*%:*"%:*

s:\5E;

::;:::<:::<:::

9::::;::>:::

q.jlk

y.hlj

.lmD]

:*>:>:2:>:

:*>:?:*:2:

:*>:>:*:*:*

:8;8;:**

: =7::2^::2

:*==::2`::2 ::3

: =5::2\::2

:*=0::2[::2

: =7::2_::2

: =5::2]::2

(?3: ?;2,?

(?7: ?;6,?

::9:>:?:<:=:2:3:0:1:7:5: :):-:!:%:

:::;:8:9:>:?:=:3:7: :#:

;;8;9;>;<;2;6;*;";

:2:):3:);3:

;3:1:3:1;3:

;3:!:3:!;3:

;3:=:3:=;3:

;3:}:3:};3:

;3:]:3:];3:

;3:-:3:-;3:

;3:5:3:5;3:

;3:%:3:%;3:

;:::8:::9:::>:::<:::2:::6:::*:::":::

::::;:8:9:>:?:<:=:2:3:0:1:6:7:4:5:*: :(:):.:/:,:-:":#: :!:&:':$:%:

::;:8:;:::8:8:;:::8:

6h6C6V6i6

2'2-23292C2I2}2

KWindows

RegOpenKeyExA

RegCreateKeyExA

GetKeyboardType

.idata

.rdata

P.reloc

P.rsrc

>">0>5>;

]VY\URL

-EWD}I

.kRtl8wi

KERNEL32.DLL

gdi32.dll

SHFolder.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:2936
   svcnost.exe:1692

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

   C:\Windows\System32\drivers\etc\hosts (5 bytes)
   C:\Users\"%CurrentUserName%"\AppData\Roaming\ntuser.dat (112 bytes)
   C:\Users\"%CurrentUserName%"\AppData\Roaming\desktop.ini (21 bytes)

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

   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "Windows Init" = "C:\Users\"%CurrentUserName%"\AppData\Roaming\xs3jqv1l3xougzaxxmjfkslczmaxbzxw2\svcnost.exe"

5. Restore the original content of the HOSTS file (%System%\drivers\etc\hosts):
   127.0.0.1 localhost
   
6. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
   
7. Reboot the computer.
   

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