Trojan-PSW.Win32.Zbot.4_ae28638978

by malwarelabrobot on October 4th, 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: ae28638978881aa8d2efdee1fee9fe98
SHA1: d126fa6e5086868d7e4d575998cbe64c66ab8d8a
SHA256: 34e011889bcdfc68da35a078d125ab3f031896ae8b32c1561236c34520e92455
SSDeep: 6144:YVcwo30d482/QZedEvcB3b1eZtjX8iO74VJMSGAEUOgm9Z:GcwoA2/i1e3ZeZxX8iLVOSaBgm9
Size: 314368 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: no certificate found
Created at: 2007-04-18 14:23:51


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):

emoco.exe:2876
ae28638978881aa8d2efdee1fee9fe98.exe:2420

The Trojan-PSW injects its code into the following process(es):

ctfmon.exe:252

File activity

The process emoco.exe:2876 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 (2208 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT (540 bytes)

The process ctfmon.exe:252 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 (2428 bytes)

The process ae28638978881aa8d2efdee1fee9fe98.exe:2420 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\Erwy\emoco.exe (1739 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\OHK8832.bat (173 bytes)

Registry activity

The process emoco.exe:2876 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" = "B0 5C 03 D1 29 CF A0 C5 79 70 67 48 95 A8 03 B7"

[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\Teqypiryuhp]
"190h10gb" = "28 32 F2 68 5E 9C 5D 3D F0 C2"

The process ctfmon.exe:252 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" = "DC 31 92 27 9A CF A3 03 19 C6 6F BA 3B 6D 70 F0"

[HKCU\Identities]
"Last User ID" = "{6855BFC2-9E4A-4896-A11D-74388FBABDC2}"

[HKCU\Identities]
"Last Username" = "Main Identity"

[HKCU\Software\Microsoft\WAB\WAB4]
"OlkFolderRefresh" = "0"

[HKCU\Software\Microsoft\WAB\WAB4]
"FirstRun" = "1"

[HKCU\Software\Microsoft\Teqypiryuhp]
"1ccd5dad" = "1753231885"

[HKCU\Identities]
"Identity Login" = "622675"

[HKCU\Software\Microsoft\Internet Account Manager]
"Server ID" = "4"

[HKCU\Identities]
"Identity Ordinal" = "2"

[HKCU\Software\Microsoft\WAB\WAB4]
"OlkContactRefresh" = "0"

The Trojan-PSW deletes the following value(s) in system registry:

[HKCU\Identities]
"Changing"

[HKCU\Identities]
"OutgoingID"

[HKCU\Identities]
"IncomingID"

The Trojan-PSW disables automatic startup of the application by deleting the following autorun value:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"internat.exe"

The process ae28638978881aa8d2efdee1fee9fe98.exe:2420 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 CD FB E4 FB 36 61 27 48 94 AB 7E 9D 5D 63 76"

[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)

No activity has been detected.

Rootkit activity

The Trojan-PSW installs the following user-mode hooks in WININET.dll:

HttpSendRequestExW
HttpSendRequestExA
InternetWriteFile
InternetReadFileExA
InternetReadFileExW
HttpSendRequestA
HttpSendRequestW
InternetQueryDataAvailable
HttpQueryInfoW
InternetCloseHandle
HttpQueryInfoA
InternetReadFile

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:

UnsealMessage
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):

    emoco.exe:2876
    ae28638978881aa8d2efdee1fee9fe98.exe:2420

  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 (2208 bytes)
    %Documents and Settings%\%current user%\NTUSER.DAT (540 bytes)
    %Documents and Settings%\%current user%\Application Data\Erwy\emoco.exe (1739 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\OHK8832.bat (173 bytes)

  5. Reboot the computer.

*Manual removal may cause unexpected system behaviour and should be performed at your own risk.