Trojan-PSW.Win32.Zbot.4_11b2fbe058

by malwarelabrobot on September 12th, 2013 in Malware Descriptions.

Trojan.GenericKD.1244554 (BitDefender), PWS:Win32/Zbot.gen!AM (Microsoft), HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Win32.Generic!SB.0 (VIPRE), Trojan.Packed.24465 (DrWeb), Trojan.GenericKD.1244554 (B) (Emsisoft), FakeSecTool-FAZ!11B2FBE05859 (McAfee), Suspicious.Cloud.5 (Symantec), Trojan.GenericKD.1244554 (FSecure), Generic_s.BZY (AVG), Trojan-PSW.Win32.Zbot.4.FD, GenericInjector.YR (Lavasoft MAS)
Behaviour: Trojan-PSW, Trojan, Packed


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: 11b2fbe0585906f75ee7ea95dd621633
SHA1: 59942b0e552948ed7acf33378f9dab28c38e13bf
SHA256: 787c26d4726ff3a1621cbcdbdeeb3fc459f7f53ea868339d3f17da3225c3fb1f
SSDeep: 6144:5aYlNZ2ZmMwZ1VLEKcnPGWFOzwsEHu1v9v/Pcp15QaETGkNkqImqt9JFe:D34mMw/VL9cnPeXp5/Pcp16Ne39JFe
Size: 304640 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: Conduit
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):

subst.exe:628
11b2fbe0585906f75ee7ea95dd621633.exe:996
ikipyn.exe:692

File activity

The process 11b2fbe0585906f75ee7ea95dd621633.exe:996 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\KNM465D.bat (173 bytes)
%Documents and Settings%\%current user%\Application Data\Qeryhu\ikipyn.exe (1729 bytes)

The process ikipyn.exe:692 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 (3120 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT (2412 bytes)

Registry activity

The process subst.exe:628 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" = "5F 20 33 F5 F1 CD 7A F9 60 90 2D AF 6E 81 7A 4D"

The process 11b2fbe0585906f75ee7ea95dd621633.exe:996 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" = "87 7C EC 68 90 6C 35 7C 18 CC 3D 7F B9 4D 27 8A"

[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 ikipyn.exe:692 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" = "DD 93 DE D8 0B BA 30 96 C7 81 30 5B 14 A1 D0 70"

[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"

[HKCU\Software\Microsoft\Ujowegyja]
"hh7cj3g" = "AB 45 A6 9C 7B D3 10 54 69 84"

Network activity (URLs)

URL IP
hxxp://www.google.com/ 173.194.43.84
hxxp://www.google.ca/?gws_rd=cr&ei=C_0vUvbtIMrHqgGO-YHYCw 173.194.43.88
hxxp://www.google.ca/?gws_rd=cr&ei=G_0vUoGUKcjsrQG1zoCABQ


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):

    subst.exe:628
    11b2fbe0585906f75ee7ea95dd621633.exe:996
    ikipyn.exe:692

  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\KNM465D.bat (173 bytes)
    %Documents and Settings%\%current user%\Application Data\Qeryhu\ikipyn.exe (1729 bytes)
    %Documents and Settings%\%current user%\NTUSER.DAT.LOG (3120 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.