Trojan-PSW.Win32.Zbot_11174a2a13

by malwarelabrobot on August 22nd, 2013 in Malware Descriptions.

HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Win32.Injector.zvr (v) (VIPRE), Virus.Win32.Cryptor!IK (Emsisoft), Trojan-PSW.Win32.Zbot.6.FD, Sinowal.YR, GenericInjector.YR, BackdoorCaphaw_QKKBAL.YR, TrojanPSWZbot.YR (Lavasoft MAS)
Behaviour: Trojan-PSW, Trojan, Backdoor, Virus


The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

Summary
Technical Details
Removal Recommendations

MD5: 11174a2a1306e92ed148ed34cfd73fcd
SHA1: b2004c3597e067919e8bc46dac50896188be7c44
SHA256: ce15144ff1b8cecf76da4740af2ff8549f4dd908f3a2f50536ed343e81c65efe
SSDeep: 3072:ZPA98tgXkRy5y954g9hL/rcTkMNdN/fxKlWd3JVRNC5YCl/M6av3e y8MuZRt45E:Z498tgU3tal9HY63JVRNC5Jj6V6f7i
Size: 252813 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: StarApp
Created at: 2013-05-16 08:35:54


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):

11174a2a1306e92ed148ed34cfd73fcd.exe:2900
vuapp.exe:2988
vuapp.exe:3484

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

ctfmon.exe:252

File activity

The process 11174a2a1306e92ed148ed34cfd73fcd.exe:2900 makes changes in a file system.
The Trojan-PSW creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\Uvreaw\vuapp.exe (252 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\tmp29b9973e.bat (177 bytes)

Registry activity

The process 11174a2a1306e92ed148ed34cfd73fcd.exe:2900 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" = "CD 2E E6 93 ED 7D 92 34 50 40 0F 74 D1 D6 2D FF"

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

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

[HKCU\Software\Microsoft\Fuqu]
"Iqicly" = "FE BF A0 A9 09 70 AC E3 53 2D 5B 2B 90 B1 07 A9"

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

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

The process vuapp.exe:2988 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" = "2C 14 B5 E9 F4 FE B7 76 46 CC 4E CE 40 00 B3 10"

The process vuapp.exe:3484 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" = "B2 F1 50 61 CF 59 5B A0 00 D6 AE D5 A1 5D 2B AF"

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

Network activity (URLs)

No activity has been detected.

Rootkit activity

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

PlaySoundW

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

HttpEndRequestW
HttpEndRequestA
HttpSendRequestExW
HttpSendRequestExA
InternetSetFilePointer
InternetReadFileExA
HttpSendRequestA
HttpOpenRequestW
HttpSendRequestW
HttpOpenRequestA
InternetQueryDataAvailable
InternetCloseHandle
HttpQueryInfoA
InternetReadFile

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 ADVAPI32.dll:

CreateProcessAsUserA
CreateProcessAsUserW

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

WSASend
gethostbyname
send
closesocket
getaddrinfo

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

ExitProcess
GetFileAttributesExW

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

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):

    11174a2a1306e92ed148ed34cfd73fcd.exe:2900
    vuapp.exe:2988
    vuapp.exe:3484

  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%\Application Data\Uvreaw\vuapp.exe (252 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\tmp29b9973e.bat (177 bytes)

  5. Reboot the computer.

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