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TrojanPSW.Win32.Zbot.4_121771398a


HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Win32.Kryptik.ake (v) (VIPRE), Trojan.Win32.Ransom!IK (Emsisoft), Trojan-PSW.Win32.Zbot.4.FD, GenericInjector.YR (Lavasoft MAS)Behaviour: Trojan-PSW, Ransom, Trojan

The description has been automatically generated by Lavasoft Malware Analysis System and it may contain incomplete or inaccurate information.

Summary

MD5: 121771398a02bd4575dad4a4fe28b04f

SHA1: 5cffc3df459fbbfeaa2e188c1c116d68a685821d

SHA256: dcbb8adb32b370062e7f1134bda850fca001a5a24117c95dd269d1ffc1d5bc85

SSDeep: 3072:FotsHUUYWbbc27KnisF7yWz5hRIv9s5Km 6FRUAMPBRtlewF:FPtbF7KnqWGsdXo/Pb

Size: 116736 bytes

File type: PE32

Platform: WIN32

Entropy: Packed

PEID: UPolyXv05_v6

Company: no certificate found

Created at: 2003-11-14 01:15:40

Summary: Trojan-PSW. Trojan program intended for stealing users passwords.

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

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

121771398a02bd4575dad4a4fe28b04f.exe:2432
459671.exe:2948
behu.exe:1644
msiexec.exe:1180

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

ctfmon.exe:252

File activity

The process 121771398a02bd4575dad4a4fe28b04f.exe:2432 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\471796.bat (94 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\461609.exe (878304 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\459671.exe (1228280 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 (4512 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT (4108 bytes)

The process 459671.exe:2948 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\IFJA0A1.bat (175 bytes)
%Documents and Settings%\%current user%\Application Data\Zateas\behu.exe (1741 bytes)

The process behu.exe:1644 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 (12016 bytes)
%Documents and Settings%\%current user%\NTUSER.DAT (10908 bytes)

Registry activity

The process 121771398a02bd4575dad4a4fe28b04f.exe:2432 makes changes in a system registry.


The Trojan-PSW creates and/or sets the following values in system registry:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{fdd9f6f3-7454-11e2-b4cd-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"AutoDetect" = "1"

[HKU\S-1-5-21-796845957-1563985344-1801674531-500\Software\WinRAR]
"Client Hash" = "CB 01 40 1E 8C 54 E1 98 2E 66 63 50 18 C3 6D 45"

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

[HKCU\Software\WinRAR]
"Client Hash" = "36 DC BF A0 5E CD E7 71 1A 46 77 18 4A A8 12 9C"

[HKU\S-1-5-21-796845957-1563985344-1801674531-500\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Personal" = "%Documents and Settings%\Administrator\My Documents"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Personal" = "%Documents and Settings%\%current user%\My Documents"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp]
"471796.bat" = "471796"

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

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

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp]
"461609.exe" = "PROMO TV"

[HKU\S-1-5-21-796845957-1563985344-1801674531-500\Software\Microsoft\Windows NT\CurrentVersion\Winlogon]
"ParseAutoexec" = "1"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Desktop" = "%Documents and Settings%\All Users\Desktop"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

[HKCU\Software\WinRAR]
"8F7ACC3EE3231C9D6B4A0AA34121FCB7" = "74 72 75 65"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common Documents" = "%Documents and Settings%\All Users\Documents"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{fdd9f6f2-7454-11e2-b4cd-806d6172696f}]
"BaseClass" = "Drive"

[HKU\S-1-5-21-796845957-1563985344-1801674531-500\Software\WinRAR]
"HWID" = "7B 42 36 38 39 46 43 36 42 2D 42 36 35 34 2D 34"

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "02 FC 47 1E A6 F7 1B A6 4B AF B4 F1 7B 15 5A B9"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{773a730e-74fb-11e2-b597-000c293bdf2f}]
"BaseClass" = "Drive"

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

[HKU\S-1-5-21-796845957-1563985344-1801674531-500\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Local AppData" = "%Documents and Settings%\Administrator\Local Settings\Application Data"

[HKCU\Software\WinRAR]
"3199DABED0830DB5A0F82DF85DFDC72B" = "74 72 75 65"

[HKU\S-1-5-21-796845957-1563985344-1801674531-500\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\Administrator\Application Data"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{fdd9f6f5-7454-11e2-b4cd-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\WinRAR]
"HWID" = "7B 30 37 32 45 46 42 44 43 2D 35 38 32 46 2D 34"

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp]
"459671.exe" = "459671"

The Trojan-PSW modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"UNCAsIntranet" = "1"

The Trojan-PSW modifies IE settings for security zones to map all web-nodes that bypassing proxy to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass" = "1"

The Trojan-PSW modifies IE settings for security zones to map all urls to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName" = "1"

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" = "5D CD 91 44 BD 36 14 D9 C8 57 78 B7 8D 42 32 2B"

[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\Oxogtapiilah]
"1j083i1d" = "jGHFYA==-"

[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 459671.exe:2948 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" = "C8 09 EB D5 0A 23 D6 B3 E1 73 12 B0 B6 FD 10 3D"

[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 behu.exe:1644 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 BA E8 35 EB 1A 02 59 F9 67 CB B2 A5 9B 2F 53"

[HKCU\Software\Microsoft\Oxogtapiilah]
"1f4f623j" = "lWGWYE7I243Ie41WZEs=c!"

[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 msiexec.exe:1180 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" = "32 35 17 5A 68 2F C6 16 67 4D E3 D3 DD 9D E4 1C"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"AutoDetect" = "1"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Common AppData" = "%Documents and Settings%\All Users\Application Data"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "46 00 00 00 40 00 00 00 01 00 00 00 00 00 00 00"

The Trojan-PSW modifies IE settings for security zones to map all web-nodes that bypassing proxy to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"ProxyBypass" = "1"

The Trojan-PSW modifies IE settings for security zones to map all local web-nodes with no dots which do not refer to any zone to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"UNCAsIntranet" = "1"

The Trojan-PSW modifies IE settings for security zones to map all urls to the Intranet Zone:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\ZoneMap]
"IntranetName" = "1"

Proxy settings are disabled:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"AutoConfigURL"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyServer"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyOverride"

Network activity (URLs)

URLIPCountry
hxxp://www.google.com/74.125.226.208
hxxp://www.google.ca/?gws_rd=cr74.125.226.216
hxxp://64.94.100.116/forum/viewtopic.php
hxxp://78.140.131.151/uploading/id=814807601&u=4WSbvjA sJYdYDrMmxr7tWH2foUuzjE7Q3uGyRDaacviRtjYIg2xcqQMAWYaZM4RqxalcusDRHEPWjjofOT0xw==
cdn162.fileshostinginformation.com78.131.140.151


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

Removals

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):

    121771398a02bd4575dad4a4fe28b04f.exe:2432
    459671.exe:2948
    behu.exe:1644

  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\471796.bat (94 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\461609.exe (878304 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\459671.exe (1228280 bytes)
    %Documents and Settings%\%current user%\ntuser.dat.LOG (4512 bytes)
    %Documents and Settings%\%current user%\NTUSER.DAT (4108 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\IFJA0A1.bat (175 bytes)
    %Documents and Settings%\%current user%\Application Data\Zateas\behu.exe (1741 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.

Static Analysis

Network Activity

Map

Strings from Dumps