Trojan-PSW.Win32.Zbot.4_84a9b7a0be

by malwarelabrobot on August 24th, 2013 in Malware Descriptions.

Trojan.Win32.Inject.gbbi (Kaspersky), Trojan.Win32.Reveton.a (v) (VIPRE), 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: 84a9b7a0be8efbee05feb37779c8acc6
SHA1: 70b32f6050262793ee639fc4b5305b2ae29e6647
SHA256: 2fa5094e4d901f60d30c3b7b19ec8f4359897e7af506b23d22ad821818e9291c
SSDeep: 6144:6W4D7 Z6uZXv/VYNQGrLKfkuIfWSZqZeqGMyEDg:Jki6uJtYPKj6WHj5yW
Size: 312320 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2013-06-16 14:22:34


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):

TMV453B:1768
84a9b7a0be8efbee05feb37779c8acc6.exe:880
giboyg.exe:828
giboyg.exe:1532

File activity

The process TMV453B:1768 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\Deefa\giboyg.exe (2763 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\SXR5C85.bat (169 bytes)

The Trojan-PSW deletes the following file(s):

%Documents and Settings%\%current user%\Application Data\Deefa\giboyg.exe (0 bytes)

The process 84a9b7a0be8efbee05feb37779c8acc6.exe:880 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\Deefa\giboyg.exe (1737 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\OPLA957.bat (173 bytes)

The process giboyg.exe:828 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 (7160 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT (5812 bytes)

Registry activity

The process TMV453B:1768 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" = "C6 49 18 A0 F8 41 CE CE BE 5B E0 8F 76 6C 33 FA"

[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 84a9b7a0be8efbee05feb37779c8acc6.exe:880 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" = "00 D2 E2 BB 80 E2 FC 03 0C D1 13 AD 2A 29 17 84"

[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 giboyg.exe:828 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" = "14 3A 86 9F 3F E2 BE 35 63 92 EC 33 D1 C7 1F 83"

[HKCU\Software\Microsoft\Kequjyi]
"1bgei8b0" = "0pAUSqXaBRnBhDuEYRdOI8hhQd8="

[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 giboyg.exe:1532 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" = "EC AD 08 0F C1 E1 81 0B B0 F8 E7 61 0A D5 D1 62"

[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"

Network activity (URLs)

URL IP
hxxp://www.google.com/ 74.125.226.209
hxxp://www.google.ca/?gws_rd=cr 74.125.226.215


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):

    TMV453B:1768
    84a9b7a0be8efbee05feb37779c8acc6.exe:880
    giboyg.exe:828
    giboyg.exe:1532

  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\Deefa\giboyg.exe (2763 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\SXR5C85.bat (169 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\OPLA957.bat (173 bytes)
    %Documents and Settings%\%current user%\NTUSER.DAT.LOG (7160 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.