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TrojanPSW.Win32.Zbot.4_08baae601f


Gen:Variant.Zusy.78678 (BitDefender), TrojanDownloader:Win32/Upatre.A (Microsoft), Trojan.Win32.Bublik.btxf (Kaspersky), Trojan.Win32.Generic.pak!cobra (VIPRE), Trojan.DownLoader9.9354 (DrWeb), Gen:Variant.Zusy.78678 (B) (Emsisoft), Generic BackDoor.u (McAfee), Trojan.Zbot (Symantec), Trojan.Injector (Ikarus), Win32:Malware-gen (Avast), TSPY_FAREIT.AUN (TrendMicro), Trojan-PSW.Win32.Zbot.4.FD, GenericInjector.YR (Lavasoft MAS)Behaviour: Trojan-Downloader, Trojan-PSW, Trojan

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

Summary

MD5: 08baae601f3887acb3110c2518792ff1

SHA1: 6433790c9108372b34947d1e9e47dbc3f010e7bd

SHA256: e7d5cce49bdd796e08b218fd0cabcc3c6d274d8dc198f9c00183eee604d10cd3

SSDeep: 384:5gaBYpZp deMunxvJLM83teBpOHtddp50tvGmapXoxURTH:yaeZp deMuxvJLjcBpOHZp tvGmapXVl

Size: 20992 bytes

File type: EXE

Platform: WIN32

Entropy: Not Packed

PEID: UPolyXv05_v6

Company: no certificate found

Created at: 2014-01-09 22:42:52

Analyzed on: WindowsXP SP3 32-bit

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):

orri.exe:1820
%original file name%.exe:864
pdfman.exe:196
wealth.exe:1508

The Trojan-PSW injects its code into the following process(es):No processes have been created.

File activity

The process orri.exe:1820 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 (7604 bytes)

The process %original file name%.exe:864 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\pdfman.exe (21 bytes)

The process pdfman.exe:196 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\Tar2.tmp (2712 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\wealth.exe (1767 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Cab5.tmp (54 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\CryptnetUrlCache\MetaData\2BF68F4714092295550497DD56F57004 (408 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\CHEZ8TER\desktop.ini (67 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015 (54 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015 (408 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Cab1.tmp (49 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Tar6.tmp (2712 bytes)
%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\CHEZ8TER\pdf[1].exe (1767 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Tar4.tmp (2712 bytes)
%Documents and Settings%\%current user%\Application Data\Microsoft\CryptnetUrlCache\Content\2BF68F4714092295550497DD56F57004 (18 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Cab3.tmp (49 bytes)

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

%Documents and Settings%\%current user%\Local Settings\Temp\Tar2.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Cab5.tmp (0 bytes)
C:\%original file name%.exe (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Cab1.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Tar6.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Tar4.tmp (0 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\Cab3.tmp (0 bytes)

The process wealth.exe:1508 makes changes in the file system.


The Trojan-PSW creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Application Data\Hogo\orri.exe (3559 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\NXU598A.bat (175 bytes)

Registry activity

The process orri.exe:1820 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" = "82 54 31 2B B1 C1 EE BE F1 A2 D6 8C 81 A5 B8 7A"

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

[HKCU\Software\Microsoft\Aningokeemy]
"30dhbig9" = "C9 44 45 40 15 8C B6 8A A7 93 A7 51 DE 86 4C 1F"

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

The process %original file name%.exe:864 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" = "BD 08 C6 70 72 51 CB C9 CA 81 B9 A9 B9 FD E5 EA"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{5c14c4f6-74da-11e2-81b0-000c29ec7fc5}]
"BaseClass" = "Drive"

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

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

[HKLM\SOFTWARE\Microsoft\Direct3D\MostRecentApplication]
"Name" = "%original file name%.exe"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[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"

"Cookies" = "%Documents and Settings%\%current user%\Cookies"
"Personal" = "%Documents and Settings%\%current user%\My Documents"

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

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 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:

"UNCAsIntranet" = "1"

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

"ProxyBypass" = "1"

The process pdfman.exe:196 makes changes in the system registry.


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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd72-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Directory" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CacheLimit" = "65452"
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache4"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"

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

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

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd73-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{c155cd75-744b-11e2-8294-806d6172696f}]
"BaseClass" = "Drive"

[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\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{5c14c4f6-74da-11e2-81b0-000c29ec7fc5}]
"BaseClass" = "Drive"

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

[HKLM\System\CurrentControlSet\Hardware Profiles\0001\Software\Microsoft\windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CacheLimit" = "65452"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 1B 00 00 00 01 00 00 00 00 00 00 00"

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "6D A8 56 F3 08 CF BB D0 55 97 CD 05 A6 BE 73 BD"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path1]
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache1"

[HKLM\SOFTWARE\Microsoft\Direct3D\MostRecentApplication]
"Name" = "pdfman.exe"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CacheLimit" = "65452"
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache3"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths]
"Paths" = "4"

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

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:

"ProxyBypass" = "1"

Proxy settings are disabled:

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

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

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

The process wealth.exe:1508 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" = "FD CB CD C9 9D AB 6E 70 B5 55 85 40 BB FD 81 D7"

[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"

Network activity (URLs)

URL IP
hxxp://a26.d.akamai.net/msdownload/update/v3/static/trustedr/en/authrootseq.txt
hxxp://a26.d.akamai.net/msdownload/update/v3/static/trustedr/en/authrootstl.cab
www.download.windowsupdate.com165.254.155.11


HOSTS file anomalies

No changes have been detected.

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

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):

    orri.exe:1820
    %original file name%.exe:864
    pdfman.exe:196
    wealth.exe:1508

  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%\Local Settings\Temp\pdfman.exe (21 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\Tar2.tmp (2712 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\wealth.exe (1767 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\Cab5.tmp (54 bytes)
    %Documents and Settings%\%current user%\Application Data\Microsoft\CryptnetUrlCache\MetaData\2BF68F4714092295550497DD56F57004 (408 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\CHEZ8TER\desktop.ini (67 bytes)
    %Documents and Settings%\%current user%\Application Data\Microsoft\CryptnetUrlCache\Content\94308059B57B3142E455B38A6EB92015 (54 bytes)
    %Documents and Settings%\%current user%\Application Data\Microsoft\CryptnetUrlCache\MetaData\94308059B57B3142E455B38A6EB92015 (408 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\Cab1.tmp (49 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\Tar6.tmp (2712 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\CHEZ8TER\pdf[1].exe (1767 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\Tar4.tmp (2712 bytes)
    %Documents and Settings%\%current user%\Application Data\Microsoft\CryptnetUrlCache\Content\2BF68F4714092295550497DD56F57004 (18 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\Cab3.tmp (49 bytes)
    %Documents and Settings%\%current user%\Application Data\Hogo\orri.exe (3559 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\NXU598A.bat (175 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