Trojan-PSW.Win32.Zbot.4_7cba82db46

by malwarelabrobot on September 10th, 2013 in Malware Descriptions.

Trojan.Win32.Inject.gbms (Kaspersky), Trojan.Win32.Generic!BT (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: 7cba82db4657899046940ea09e0afc8c
SHA1: 922d44c2bebd1da28af65c3bac5af3b2f6601fc2
SHA256: 6caf17c040f2847420c1a1c7aa3dae922fb8f2493d53b1ca9b6935611cb7b696
SSDeep: 6144:AYHmmFgbnshYfV TOGzvmkxBs723qGh maXdPc:Ak24hYN TOmvm0UG9up
Size: 311808 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):

7cba82db4657899046940ea09e0afc8c.exe:1600
omojwi.exe:1116

File activity

The process 7cba82db4657899046940ea09e0afc8c.exe:1600 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\Elbyek\omojwi.exe (1736 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\HURAFDC.bat (173 bytes)

The process omojwi.exe:1116 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 (6656 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT (6308 bytes)

Registry activity

The process 7cba82db4657899046940ea09e0afc8c.exe:1600 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" = "6C DE 26 4E 78 EB 13 98 13 6F 0F F4 F7 97 70 6E"

[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 omojwi.exe:1116 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" = "92 F2 A1 61 E2 76 4F A1 4F EE E1 14 94 DE 8A 99"

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

[HKCU\Software\Microsoft\Uhkeagcead]
"236937g0" = "830 5UdKlenmv h7NjKk5g=="

[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/ 173.194.43.82
hxxp://www.google.ca/?gws_rd=cr&ei=MostUtzMFKLCyQHfkwE 173.194.43.88
hxxp://www.google.ca/?gws_rd=cr&ei=NIstUv2wJc3MqQG7_YG4CA


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):

    7cba82db4657899046940ea09e0afc8c.exe:1600
    omojwi.exe:1116

  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\Elbyek\omojwi.exe (1736 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\HURAFDC.bat (173 bytes)
    %Documents and Settings%\%current user%\NTUSER.DAT.LOG (6656 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.