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TrojanPSW.Win32.Zbot.4_e5cdffd08e


Trojan.Win32.Inject.fyoz (Kaspersky), Trojan.Win32.Generic!BT (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

MD5: e5cdffd08eae171f8306365683d291ab

SHA1: dda32e1b8c9f3b6b9ea164f94b42ce444635d860

SHA256: 185f2f6cf272600a4f6746d24d46edb1156c63077756469952449570b132d73a

SSDeep: 6144:qGWXMkPCXv7ZDtVe9wcu l1kBgnZ5uKDUwQFn6Na/DAQ:QqRP l1HfrDUnnwa7AQ

Size: 309760 bytes

File type: PE32

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.

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

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

unyb.exe:1992
e5cdffd08eae171f8306365683d291ab.exe:1536

File activity

The process unyb.exe:1992 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 (3216 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT (3012 bytes)

The process e5cdffd08eae171f8306365683d291ab.exe:1536 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\Wuro\unyb.exe (1734 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\LUU5261.bat (173 bytes)

Registry activity

The process unyb.exe:1992 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" = "F9 07 93 3B 46 57 62 94 E6 18 CC AD 26 2A 49 40"

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

[HKCU\Software\Microsoft\Dipaibiwetg]
"34i61a7e" = "C9 15 BA 7A 2E CF 37 C2 F4 4E"

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

The process e5cdffd08eae171f8306365683d291ab.exe:1536 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" = "2D DD BC 5F 47 05 D6 25 5B 93 71 A3 CB 10 91 7D"

[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/74.125.226.212
hxxp://www.google.ca/?gws_rd=cr74.125.226.223


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

Removals

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):

    unyb.exe:1992
    e5cdffd08eae171f8306365683d291ab.exe:1536

  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%\NTUSER.DAT.LOG (3216 bytes)
    %Documents and Settings%\%current user%\Application Data\Wuro\unyb.exe (1734 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\LUU5261.bat (173 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.

Static Analysis

Network Activity

Map

Strings from Dumps