Trojan-PSW.Win32.Zbot.4_02d23f2da3

by malwarelabrobot on October 3rd, 2013 in Malware Descriptions.

HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Win32.Generic!SB.0 (VIPRE), Trojan-Spy.Win32.Zbot!IK (Emsisoft), Trojan-PSW.Win32.Zbot.4.FD, GenericInjector.YR (Lavasoft MAS)
Behaviour: Trojan-Spy, 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: 02d23f2da39a9b55858f99a0aeed6c8f
SHA1: d145e66e77285464797f329d69f97b78917081c4
SHA256: d68bce3c60a7bb4d998c2bea2e5bafc15e1e91305f6310575af4416e8acaf648
SSDeep: 6144:zbb IhFwMaULdouscWFwJ2b257UOO2iqcpmXKnshg7n:is7NL2uscWFS2CpOrqcpmXMQ0
Size: 310784 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):

02d23f2da39a9b55858f99a0aeed6c8f.exe:1528
ogryeg.exe:836

File activity

The process 02d23f2da39a9b55858f99a0aeed6c8f.exe:1528 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\YUY18A1.bat (173 bytes)
%Documents and Settings%\%current user%\Application Data\Iqfe\ogryeg.exe (1735 bytes)

The process ogryeg.exe:836 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 (7336 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT (5868 bytes)

Registry activity

The process 02d23f2da39a9b55858f99a0aeed6c8f.exe:1528 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" = "77 34 DC F3 4F D2 54 E2 11 3B BF 76 A2 43 5E 10"

[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 ogryeg.exe:836 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" = "A7 C9 88 84 B0 4C DE C9 54 A2 02 6A D9 FB 96 CB"

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

[HKCU\Software\Microsoft\Geyqifxuwyle]
"1ah85cca" = "F6 92 7E 9C E6 0F D1 28 AB 48 D2 3C BD 40"

[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/ 74.125.225.112
hxxp://www.google.ca/?gws_rd=cr&ei=UphLUrmhCqSRygH4sYBY 74.125.225.127
hxxp://www.google.ca/?gws_rd=cr&ei=YphLUtDhCZP2rAGlzYDYCw
hxxp://www.google.ca/?gws_rd=cr&ei=cphLUo2_B8SmqwHSzYCACQ


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):

    02d23f2da39a9b55858f99a0aeed6c8f.exe:1528
    ogryeg.exe:836

  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\YUY18A1.bat (173 bytes)
    %Documents and Settings%\%current user%\Application Data\Iqfe\ogryeg.exe (1735 bytes)
    %Documents and Settings%\%current user%\NTUSER.DAT.LOG (7336 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.