MD5: c5906a9731a3b1e4e857f56ba26d9502
SHA1: 52b9c819e0ab073bb56964f86b7e6881776c1183
SHA256: 34e12083f6874dd67455982f4f07810399a31ccccb84a8153a5e70b2c2f6cd29
SSDeep: 6144:lwXbPWhg/3me3Re32XmF2XSAQGYkZOgTnXdl6tVFDgKXxqBBo6Ctdc333EUWJB2K: XNnPDXS9kggzXiVKK0cNk4MrA03Wo
Size: 609280 bytes
File type: PE32
Platform: WIN32
Entropy: Packed
PEID: MicrosoftVisualC, NETexecutable, UPolyXv05_v6
Company: no certificate found
Created at: 2013-07-24 10:50:47

Summary:

Trojan-PSW. Trojan program intended for stealing users passwords.

Payload

No specific payload has been found.

Process activity

The Trojan-PSW creates the following process(es):

oriv.exe:1836
c5906a9731a3b1e4e857f56ba26d9502.exe:1772
AMlFyq.exe:376

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

vbc.exe:1600

File activity

The process c5906a9731a3b1e4e857f56ba26d9502.exe:1772 makes changes in a file system.
The Trojan-PSW creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\AMlFyq.exe (141 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmp1.tmp.exe (4185 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\st.dat (9 bytes)

The process AMlFyq.exe:376 makes changes in a file system.
The Trojan-PSW creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\tmpdc186e17.bat (219 bytes)
%Documents and Settings%\%current user%\Application Data\Ecfuil\oriv.exe (141 bytes)

Registry activity

The process oriv.exe:1836 makes changes in a system registry.
The Trojan-PSW creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "67 B7 0B FA 8C 43 14 76 B7 82 2E 7B CC A2 73 E3"

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

[HKCU\Software\Microsoft\Buxuac]
"Reewbaedu" = "FB 84 67 90 3B A0 BB 66 F0 F8 61 66 F8 2A E6 0D"

The process c5906a9731a3b1e4e857f56ba26d9502.exe:1772 makes changes in a system registry.
The Trojan-PSW creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "C8 B6 1A 78 C8 D0 05 E8 3A 9A 5A 20 BA 04 93 47"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{5c14c4f6-74da-11e2-81b0-000c29ec7fc5}]
"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\ShellNoRoam\MUICache\%Documents and Settings%\%current user%\Local Settings\Temp]
"AMlFyq.exe" = "AMlFyq"

[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\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

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

To automatically run itself each time Windows is booted, the Trojan-PSW adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"tmp2" = "%Documents and Settings%\%current user%\Local Settings\Temp\tmp1.tmp.exe"

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

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

The process vbc.exe:1600 makes changes in a system registry.
The Trojan-PSW creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "AA 72 E4 09 13 F9 6A 3D C8 CA DE 88 DA 9A 24 8B"

[HKCU\Software\Microsoft\Buxuac]
"Reewbaedu" = "FB 84 67 90 3B A0 BB 66 F0 F8 61 66 F8 2A E6 0D"

The process AMlFyq.exe:376 makes changes in a system registry.
The Trojan-PSW creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "3F 14 48 B4 6F F6 5D D8 64 A8 7D 3D 2D B0 72 42"

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

[HKCU\Software\Microsoft\Buxuac]
"Reewbaedu" = "FB 84 67 90 3B A0 BB 66 F0 F8 61 66 F8 2A E6 0D"

Network activity (URLs)

URL	IP
hxxp://76.72.162.219/menu/cfg.bin

Rootkit activity

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

HttpSendRequestExA
HttpSendRequestW
InternetReadFileExA
InternetQueryDataAvailable
HttpSendRequestExW
InternetReadFile
HttpQueryInfoA
HttpSendRequestA
InternetCloseHandle

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

PFXImportCertStore

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

WSASend
send
closesocket

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

GetFileAttributesExW

The Trojan-PSW 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):
   

   oriv.exe:1836
   c5906a9731a3b1e4e857f56ba26d9502.exe:1772
   AMlFyq.exe:376

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

   %Documents and Settings%\%current user%\Local Settings\Temp\AMlFyq.exe (141 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\tmp1.tmp.exe (4185 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\st.dat (9 bytes)
   %Documents and Settings%\%current user%\Local Settings\Temp\tmpdc186e17.bat (219 bytes)
   %Documents and Settings%\%current user%\Application Data\Ecfuil\oriv.exe (141 bytes)

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

   [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
   "tmp2" = "%Documents and Settings%\%current user%\Local Settings\Temp\tmp1.tmp.exe"

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.