Trojan.GenericKD.1964486_ec7ce8651b

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

The Trojan creates the following process(es):

%original file name%.exe:748
%original file name%.exe:1796
nawi.exe:616
nawi.exe:1344

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

Explorer.EXE:840

Mutexes

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

File activity

The process %original file name%.exe:748 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\taroks\normals.w (5064 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsxB3.tmp (7995 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsuB4.tmp\normals.dll (2392 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\nsuB4.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsxB2.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nsuB4.tmp\normals.dll (0 bytes)

The process %original file name%.exe:1796 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\tmp4438cd0b.bat (177 bytes)
%Documents and Settings%\%current user%\Application Data\Ifelr\nawi.exe (223 bytes)

The process nawi.exe:1344 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\taroks\normals.w (5064 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nssB7.tmp\normals.dll (2392 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nseB6.tmp (7995 bytes)

The Trojan deletes the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\nspB5.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nssB7.tmp\normals.dll (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\nssB7.tmp (0 bytes)

Registry activity

The process %original file name%.exe:748 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "43 9B 3F 8E FF CB 73 B4 02 C7 07 9A AD DA F4 FC"

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

[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"

The process %original file name%.exe:1796 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 1E A1 2F A4 BA E8 A4 D0 00 3D 01 E1 2A 27 3E"

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

The process nawi.exe:616 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "19 07 0D 87 C9 02 14 3D 63 F9 6E 52 DA AD AC 70"

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

The process nawi.exe:1344 makes changes in the system registry.

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

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "EA 56 C1 62 E2 F6 A4 25 28 6C 66 DD D8 B3 EB AE"

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

[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"

Dropped PE files

MD5	File path
187786f3bc0b857bb86453e81395369f	c:\Documents and Settings\"%CurrentUserName%"\Application Data\Ifelr\nawi.exe

HOSTS file anomalies

No changes have been detected.

Rootkit activity

The Trojan installs the following user-mode hooks in WININET.dll:

HttpSendRequestExA
HttpSendRequestW
InternetReadFileExA
InternetQueryDataAvailable
HttpSendRequestExW
InternetReadFile
HttpQueryInfoA
HttpSendRequestA
InternetCloseHandle

The Trojan installs the following user-mode hooks in CRYPT32.dll:

PFXImportCertStore

The Trojan installs the following user-mode hooks in USER32.dll:

SetCursorPos
DefMDIChildProcA
DefFrameProcA
DefDlgProcA
GetClipboardData
DefMDIChildProcW
DefFrameProcW
GetUpdateRgn
RegisterClassA
GetDCEx
ReleaseCapture
SetCapture
DefWindowProcA
CallWindowProcA
GetUpdateRect
PeekMessageA
CallWindowProcW
GetMessagePos
GetCursorPos
EndPaint
BeginPaint
DefWindowProcW
RegisterClassExA
GetMessageA
DefDlgProcW
SwitchDesktop
OpenInputDesktop
RegisterClassExW
RegisterClassW
GetCapture
PeekMessageW
GetMessageW
GetWindowDC
TranslateMessage
GetDC
ReleaseDC

The Trojan installs the following user-mode hooks in WS2_32.dll:

WSASend
send
closesocket

The Trojan installs the following user-mode hooks in kernel32.dll:

GetFileAttributesExW

The Trojan installs the following user-mode hooks in ntdll.dll:

LdrLoadDll
NtCreateThread

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):

   %original file name%.exe:748
   %original file name%.exe:1796
   nawi.exe:616
   nawi.exe:1344
   

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

   %Documents and Settings%\%current user%\Local Settings\Temp\taroks\normals.w (5064 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\nsxB3.tmp (7995 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\nsuB4.tmp\normals.dll (2392 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\tmp4438cd0b.bat (177 bytes)
   %Documents and Settings%\%current user%\Application Data\Ifelr\nawi.exe (223 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\nssB7.tmp\normals.dll (2392 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\nseB6.tmp (7995 bytes)

5. 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:
Legal Copyright:
Legal Trademarks:
Original Filename:
Internal Name:
File Version:
File Description:
Comments:
Language: Language Neutral

Company Name: Product Name: Product Version: Legal Copyright: Legal Trademarks: Original Filename: Internal Name: File Version: File Description: Comments: Language: Language Neutral

PE Sections

Name	Virtual Address	Virtual Size	Raw Size	Entropy	Section MD5
.text	4096	25046	25088	4.51043	a436e6a5ee718deeb0af89624d941715
.rdata	32768	5216	5632	3.42794	9b909cc04ca8fa423df16432e48f502c
.data	40960	176056	1536	2.69571	f6e758c86da20cc0ec6efc2daea8d45a
.ndata	217088	65536	0	0	d41d8cd98f00b204e9800998ecf8427e
.rsrc	282624	7800	8192	2.62555	e1f57ae082614f858dc0484dbfbfdc53

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

Explorer.EXE_840_rwx_01DC0000_00027000:

.text

.text

`.data

`.data

.reloc

.reloc

hXXp://VVV.google.com/webhp

hXXp://VVV.google.com/webhp

PR_OpenTCPSocket

PR_OpenTCPSocket

k.cim

k.cim

gdiplus.dll

gdiplus.dll

GdiplusShutdown

GdiplusShutdown

ole32.dll

ole32.dll

gdi32.dll

gdi32.dll

: ;2*8.>

: ;2*8.>

3.#70!2)

3.#70!2)

x#m`a`cmddt-

x#m`a`cmddt-

6 !26!1'1

6 !26!1'1

7"52),,>

7"52),,>

;

;

71.(5;4=

71.(5;4=

(203,2$0

(203,2$0

/?./,5

/?./,5

:>(

:>(

8%/

8%/

%/>!

%/>!

HTTP/1.1

HTTP/1.1

userenv.dll

userenv.dll

del "%s"

del "%s"

if exist "%s" goto d

if exist "%s" goto d

del /F "%s"

del /F "%s"

Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; SV1)

Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; SV1)

urlmon.dll

urlmon.dll

cabinet.dll

cabinet.dll

hXXp://

hXXp://

hXXps://

hXXps://

HTTP/1.

HTTP/1.

SSSh,4

SSSh,4

GetProcessHeap

GetProcessHeap

KERNEL32.dll

KERNEL32.dll

SetKeyboardState

SetKeyboardState

ExitWindowsEx

ExitWindowsEx

MsgWaitForMultipleObjects

MsgWaitForMultipleObjects

MapVirtualKeyW

MapVirtualKeyW

GetKeyboardState

GetKeyboardState

OpenWindowStationW

OpenWindowStationW

GetProcessWindowStation

GetProcessWindowStation

CreateWindowStationW

CreateWindowStationW

CloseWindowStation

CloseWindowStation

SetProcessWindowStation

SetProcessWindowStation

USER32.dll

USER32.dll

RegOpenKeyExW

RegOpenKeyExW

RegEnumKeyExW

RegEnumKeyExW

RegCloseKey

RegCloseKey

RegCreateKeyExW

RegCreateKeyExW

ADVAPI32.dll

ADVAPI32.dll

PathIsURLW

PathIsURLW

UrlUnescapeA

UrlUnescapeA

SHDeleteKeyW

SHDeleteKeyW

SHLWAPI.dll

SHLWAPI.dll

ShellExecuteW

ShellExecuteW

SHELL32.dll

SHELL32.dll

Secur32.dll

Secur32.dll

SetViewportOrgEx

SetViewportOrgEx

GDI32.dll

GDI32.dll

WS2_32.dll

WS2_32.dll

PFXImportCertStore

PFXImportCertStore

CertDeleteCertificateFromStore

CertDeleteCertificateFromStore

CertOpenSystemStoreW

CertOpenSystemStoreW

CertCloseStore

CertCloseStore

CertEnumCertificatesInStore

CertEnumCertificatesInStore

CertDuplicateCertificateContext

CertDuplicateCertificateContext

PFXExportCertStoreEx

PFXExportCertStoreEx

CRYPT32.dll

CRYPT32.dll

HttpSendRequestExA

HttpSendRequestExA

HttpQueryInfoA

HttpQueryInfoA

HttpSendRequestExW

HttpSendRequestExW

HttpSendRequestW

HttpSendRequestW

HttpSendRequestA

HttpSendRequestA

InternetCrackUrlA

InternetCrackUrlA

HttpOpenRequestA

HttpOpenRequestA

HttpAddRequestHeadersA

HttpAddRequestHeadersA

GetUrlCacheEntryInfoW

GetUrlCacheEntryInfoW

HttpAddRequestHeadersW

HttpAddRequestHeadersW

WININET.dll

WININET.dll

OLEAUT32.dll

OLEAUT32.dll

NETAPI32.dll

NETAPI32.dll

.yBY8

.yBY8

6 6&6/656{6

6 6&6/656{6

cGlobal\XXX

cGlobal\XXX

nspr4.dll

nspr4.dll

nss3.dll

nss3.dll

SysShadow

SysShadow

kernel32.dll

kernel32.dll

"%s" %s

"%s" %s

/c "%s"

/c "%s"

%sx.%s

%sx.%s

%sx

%sx

%Documents and Settings%\%current user%\Application Data\Ciyxza\ylamo.sod

%Documents and Settings%\%current user%\Application Data\Ciyxza\ylamo.sod

%Documents and Settings%\%current user%\Application Data\Ciyxza

%Documents and Settings%\%current user%\Application Data\Ciyxza

ylamo.sod

ylamo.sod

Global\{5FA07C32-7222-1422-1671-00624916E055}

Global\{5FA07C32-7222-1422-1671-00624916E055}

%Documents and Settings%\%current user%\Application Data

%Documents and Settings%\%current user%\Application Data

{C9DBCE17-C007-8259-1671-00624916E055}

{C9DBCE17-C007-8259-1671-00624916E055}