MD5: f3b8c5beab8ff5f2b7183f951cb87cbd
SHA1: ed55d3ac027e9bebee5d484ea63ac6b5a5bf5a9d
SHA256: 0f35cc0039b27ff634baedd5d59a9d9dda16b15e521410a0694e947c2755da99
SSDeep: 6144:6bIw2I9JJmzMrmba6IOro2YFU9KoZ4p8RM8oSXgMz:cIwEzMaPIIfeU9LZJM8oSX3z
Size: 203112 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: Armadillov171, MicrosoftVisualC, MicrosoftVisualCv50v60MFC, MicrosoftVisualC50, UPolyXv05_v6
Company: no certificate found
Created at: 2014-02-20 09:17:17
Analyzed on: WindowsXP SP3 32-bit

Summary:

Backdoor. Malware that enables a remote control of victim's machine.

Payload

No specific payload has been found.

Process activity

The Backdoor creates the following process(es):

ulunw.exe:216
ulunw.exe:1568
%original file name%.exe:3892
%original file name%.exe:2504

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

ctfmon.exe:252

File activity

The process %original file name%.exe:2504 makes changes in the file system.
The Backdoor creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\tmpd0b759e9.bat (177 bytes)
%Documents and Settings%\%current user%\Application Data\Heqeac\ulunw.exe (203 bytes)

Registry activity

The process ctfmon.exe:252 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKCU\Software\Microsoft\Exem]
"Imozqoza" = "60 17 29 5F 16 1C 17 E6 BF CD CE 6D 53 F8 1A 07"

The Backdoor deletes the following value(s) in system registry:
The Backdoor disables automatic startup of the application by deleting the following autorun value:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"internat.exe"

The process ulunw.exe:216 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "CD 95 00 62 39 9F 33 7A 13 39 EF 93 E6 55 C0 66"

The process ulunw.exe:1568 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "0D 5E 3C E1 47 33 4F 47 62 AB C0 D0 56 93 9E 77"

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

The process %original file name%.exe:3892 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "96 36 02 D4 C4 2B A1 98 C0 FD CF 07 BF 46 7E 08"

The process %original file name%.exe:2504 makes changes in the system registry.
The Backdoor creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "12 FD 62 03 CB 8A 7E 45 B1 B6 A5 D6 A1 55 63 C2"

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

Network activity (URLs)

URL	IP
hxxp://190.104.217.181/~ssiprueb/wp-includes/css/cfg.bin
hxxp://www.google.com/webhp	173.194.43.81
hxxp://www.google.ca/webhp?gfe_rd=cr&ei=l7UjU5K8KauC8Qez2ICQDA	173.194.43.88
hxxp://e6845.ce.akamaiedge.net/crls/secureca.crl
hxxp://e6845.ce.akamaiedge.net/crls/gtglobal.crl
hxxp://www3.l.google.com/GIAG2.crl
crl.geotrust.com	23.4.37.163
pki.google.com	173.194.43.65

HOSTS file anomalies

No changes have been detected.

Rootkit activity

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

HttpSendRequestExW
HttpSendRequestExA
InternetReadFileExA
HttpSendRequestA
HttpSendRequestW
InternetQueryDataAvailable
InternetCloseHandle
HttpQueryInfoA
InternetReadFile

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

PFXImportCertStore

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

WSASend
send
closesocket

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

GetFileAttributesExW

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

LdrLoadDll
NtCreateThread

Propagation

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):
   

   ulunw.exe:216
   ulunw.exe:1568
   %original file name%.exe:3892
   %original file name%.exe:2504

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

   %Documents and Settings%\%current user%\Local Settings\Temp\tmpd0b759e9.bat (177 bytes)
   %Documents and Settings%\%current user%\Application Data\Heqeac\ulunw.exe (203 bytes)

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.