Trojan-PSW.Win32.Zbot.4_404147c511

by malwarelabrobot on October 21st, 2013 in Malware Descriptions.

HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Win32.Generic!SB.0 (VIPRE), Trojan-PSW.Win32.Tepfer!IK (Emsisoft), Trojan-PSW.Win32.Zbot.4.FD, GenericInjector.YR (Lavasoft MAS)
Behaviour: Trojan-PSW, Trojan


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: 404147c5118bc736a1e0afed11ec4f8c
SHA1: 7642aaf5552ede89fa82ed79cfe9f79171331046
SHA256: 9ce3777130c4b531d8a0ec9c126fbf498c3e6b5485705c6213c6b18e711dd860
SSDeep: 6144:wVPodHmKXwgc7Wsv78A8WkYx59NGMNa909EdKG7S5Y86MQLvtR:wxgH5Xwgc7WpZWlbNX8TFx
Size: 303104 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2006-04-18 12:18:53


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):

404147c5118bc736a1e0afed11ec4f8c.exe:1788
opiwim.exe:496

File activity

The process 404147c5118bc736a1e0afed11ec4f8c.exe:1788 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\ZTN6934.bat (173 bytes)
%Documents and Settings%\%current user%\Application Data\Zeybto\opiwim.exe (1728 bytes)

The process opiwim.exe:496 makes changes in a file system.
The Trojan-PSW creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\NTUSER.DAT.LOG (7080 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT (5660 bytes)

Registry activity

The process 404147c5118bc736a1e0afed11ec4f8c.exe:1788 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" = "EE 6D A1 8D 4C 02 DF E1 19 82 67 A6 7C A5 DA BD"

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

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

The process opiwim.exe:496 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" = "39 E3 5A 99 08 3E 7D A7 93 C6 DF AC B3 E4 4F 4B"

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

[HKCU\Software\Microsoft\Suowiltoulq]
"13id088c" = "22 7F 5E 01 5D 2F DF 4B 50 9E"

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

Network activity (URLs)

URL IP
hxxp://www.google.com/ 173.194.43.80
hxxp://www.google.ca/?gws_rd=cr&ei=W11kUu-QA6H4yQHWg4DoCw 173.194.43.88


Rootkit activity

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

HttpSendRequestExA
HttpSendRequestW
InternetReadFileExA
InternetWriteFile
InternetWriteFileExA
InternetQueryDataAvailable
HttpQueryInfoW
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:

GetClipboardData
TranslateMessage

The Trojan-PSW installs the following user-mode hooks in Secur32.dll:

DecryptMessage
SealMessage
DeleteSecurityContext

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

WSAGetOverlappedResult
WSASend
recv
gethostbyname
WSARecv
send
closesocket
freeaddrinfo
getaddrinfo
GetAddrInfoW

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):

    404147c5118bc736a1e0afed11ec4f8c.exe:1788
    opiwim.exe:496

  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\ZTN6934.bat (173 bytes)
    %Documents and Settings%\%current user%\Application Data\Zeybto\opiwim.exe (1728 bytes)
    %Documents and Settings%\%current user%\NTUSER.DAT.LOG (7080 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.