Trojan-PSW.Win32.Zbot.4_e9a686aea7

by malwarelabrobot on August 8th, 2013 in Malware Descriptions.

Trojan.Win32.Inject.fyyf (Kaspersky), Trojan.Win32.Kryptik.ake (v) (VIPRE), Trojan.Win32.FakeAlert!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: e9a686aea7323d962f9121d86ba76428
SHA1: f3c5e70f6fd28a345a63f01366e0d1e85f0d6bd5
SHA256: 1ecc538708ad911a31b38b3fb3800495f7ed65004e9d024c2c287e213d2597ae
SSDeep: 6144:AA2SqhTtiBZy38QRDFkZzI74WnY921HPYDbgm8qZXGeYzH:X2Sqx4BZyMQ0zeY9IHQXgHFeYzH
Size: 313344 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.

Payload

No specific payload has been found.

Process activity

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

ucawg.exe:2920
ucawg.exe:4016
FBP31BA:1036
e9a686aea7323d962f9121d86ba76428.exe:1268

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

ctfmon.exe:252

File activity

The process ucawg.exe:2920 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 (2088 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT (540 bytes)

The process FBP31BA:1036 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\OJIC9F3.bat (169 bytes)
%Documents and Settings%\%current user%\Application Data\Arny\ucawg.exe (2777 bytes)

The Trojan-PSW deletes the following file(s):

%Documents and Settings%\%current user%\Application Data\Arny\ucawg.exe (0 bytes)

The process e9a686aea7323d962f9121d86ba76428.exe:1268 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\IOF6438.bat (173 bytes)
%Documents and Settings%\%current user%\Application Data\Arny\ucawg.exe (1738 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)

Registry activity

The process ucawg.exe:2920 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" = "0C 3D 7C F6 C8 3D 0E 9F 65 3F 5D 30 E2 C9 D6 35"

[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\Ewybimy]
"2eh0h1ih" = "711K3f/g"

The process ucawg.exe:4016 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" = "55 24 4C 8A EC 57 F4 5A 10 10 54 D8 30 F9 9A D2"

[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 FBP31BA:1036 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" = "49 62 18 18 5A 39 07 E9 A2 24 1D 45 C6 25 D4 25"

[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 e9a686aea7323d962f9121d86ba76428.exe:1268 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" = "4E AA 5C 06 09 C8 F0 68 DA 3A 13 3F E0 9F 64 53"

[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 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" = "C9 8C 06 85 47 64 74 5E 0D 1D 16 01 1B 9A F0 17"

[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\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"

[HKCU\Software\Microsoft\Ewybimy]
"2b544ad3" = "86 5D 7E DD"

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"

Network activity (URLs)

No activity has been detected.

Rootkit activity

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

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):

    ucawg.exe:2920
    ucawg.exe:4016
    FBP31BA:1036
    e9a686aea7323d962f9121d86ba76428.exe:1268

  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 (2088 bytes)
    %Documents and Settings%\%current user%\NTUSER.DAT (540 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\OJIC9F3.bat (169 bytes)
    %Documents and Settings%\%current user%\Application Data\Arny\ucawg.exe (2777 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\IOF6438.bat (173 bytes)

  5. Reboot the computer.

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

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