Trojan-PSW.Win32.Zbot.4_560e6d7a86

by malwarelabrobot on December 4th, 2013 in Malware Descriptions.

Trojan.VIZ.Gen.1 (BitDefender), PWS:Win32/Zbot.gen!AM (Microsoft), HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Win32.Zbot.smb (v) (VIPRE), Trojan.Packed.24465 (DrWeb), Trojan.VIZ.Gen.1 (B) (Emsisoft), PWS-Zbot-FBFW!560E6D7A863F (McAfee), Packed.Generic.432 (Symantec), Trojan-PSW.Win32.Tepfer (Ikarus), Trojan.VIZ.Gen.1 (FSecure), Generic_s.BZY (AVG), Win32:Ransom-APM [Trj] (Avast), TROJ_GEN.F0C2C00KR13 (TrendMicro), Trojan-PSW.Win32.Zbot.4.FD, GenericInjector.YR (Lavasoft MAS)
Behaviour: Trojan-PSW, Ransom, 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: 560e6d7a863f11a565fbb37e580edc36
SHA1: 5d3ccc9deba886e0f515a2ec471767743661130b
SHA256: 4b70cf3d04fd6f8468c5eab80c5656d1875703395a548350385fd2fa97f8f214
SSDeep: 6144:5hhYh6GskGHJWboYNSNzl 1cdOr7XVq48nUS11:5hm6GszrH ig7Fq48USX
Size: 304640 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: UPolyXv05_v6
Company: Premium Installer
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):

ejowz.exe:1588
%original file name%.exe:2248

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

ctfmon.exe:252

File activity

The process ejowz.exe:1588 makes changes in the file system.
The Trojan-PSW creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\ntuser.dat.LOG (7608 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT (7492 bytes)

The process %original file name%.exe:2248 makes changes in the file system.
The Trojan-PSW creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temp\LFNE49D.bat (173 bytes)
%Documents and Settings%\%current user%\Application Data\Uslouc\ejowz.exe (1729 bytes)

The process ctfmon.exe:252 makes changes in the file system.
The Trojan-PSW creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\ntuser.dat.LOG (5400 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT (4484 bytes)

Registry activity

The process ejowz.exe:1588 makes changes in the system registry.
The Trojan-PSW creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "76 A3 9B 11 63 7C 8E E1 67 5A 11 B8 D3 29 64 9B"

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

[HKCU\Software\Microsoft\Jeaqzohoadqe]
"262a0630" = "6xL7wSQiNQ yR0g2"

The process %original file name%.exe:2248 makes changes in the system registry.
The Trojan-PSW creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "9F 2E B3 89 A4 50 1F DA 63 03 7D F8 12 31 80 88"

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

The process ctfmon.exe:252 makes changes in the system registry.
The Trojan-PSW creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "A7 06 95 E1 11 7A 6E E8 7F 45 A5 E3 94 98 0B 5E"

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

[HKCU\Software\Microsoft\WAB\WAB4]
"OlkFolderRefresh" = "0"
"FirstRun" = "1"

[HKCU\Software\Microsoft\Jeaqzohoadqe]
"29c6hh82" = "zhKJwQ==D"

[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"

"OutgoingID"
"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.

HOSTS file anomalies

No changes have 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):

    ejowz.exe:1588
    %original file name%.exe:2248

  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 (7608 bytes)
    %Documents and Settings%\%current user%\NTUSER.DAT (7492 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\LFNE49D.bat (173 bytes)
    %Documents and Settings%\%current user%\Application Data\Uslouc\ejowz.exe (1729 bytes)

  5. Reboot the computer.

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

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