Trojan-PSW.Win32.Zbot_7a0bf9c79a

by malwarelabrobot on October 17th, 2013 in Malware Descriptions.

HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Win32.Generic!BT (VIPRE), Trojan-Dropper!IK (Emsisoft), Trojan-PSW.Win32.Zbot.6.FD, BackdoorCaphaw_QKKBAL.YR, TrojanPSWZbot.YR, GenericInjector.YR (Lavasoft MAS)
Behaviour: Trojan-Dropper, Trojan-PSW, Trojan, Backdoor


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: 7a0bf9c79aa9ce4df069f9d06068325f
SHA1: d362c66611fc95c2306233926971d13983b596ad
SHA256: c1e1fa59c87292931698c7f2fe366ca32913afd27f10af0bbd0de9123308b66b
SSDeep: 6144:AixGGGGGGGGGGGGGGGCPF6xHlxxxxxxRxxxxxxxM7mL57NnY2E/G16cB2pU2mo3E:ATlNnY2E/QIV3Be
Size: 445653 bytes
File type:
Platform:
Entropy:
PEID: Armadillov171, MicrosoftVisualC, MicrosoftVisualCv50v60MFC, MicrosoftVisualC50, UPolyXv05_v6
Company: no certificate found
Created at: no data


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):

net1.exe:776
noeso.exe:1452
7a0bf9c79aa9ce4df069f9d06068325f.exe:748
7a0bf9c79aa9ce4df069f9d06068325f.exe:992
AcroRd32.exe:876
net.exe:1760
iexplore.exe:1064
FB_4.tmp.exe:1728
FB_3.tmp.exe:1580

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

AcroRd32.exe:1256

File activity

The process 7a0bf9c79aa9ce4df069f9d06068325f.exe:748 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\FB_2.tmp.pdf (51 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\FB_4.tmp.exe (141 bytes)

The process 7a0bf9c79aa9ce4df069f9d06068325f.exe:992 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\InstallDir\help.exe (2321 bytes)

The process AcroRd32.exe:1256 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\Adobe\Acrobat\9.0\SharedDataEvents-journal (1024 bytes)
%Documents and Settings%\%current user%\Application Data\Adobe\Acrobat\9.0\AdobeCMapFnt09.lst (508 bytes)
%Documents and Settings%\%current user%\Application Data\Adobe\Acrobat\9.0\USERCACHE.BIN (1444 bytes)
%Documents and Settings%\%current user%\Application Data\Adobe\Acrobat\9.0\AdobeSysFnt09.lst (31 bytes)
%Documents and Settings%\%current user%\Local Settings\Application Data\Adobe\Acrobat\9.0\Cache\AcroFnt09.lst (7 bytes)

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

%Documents and Settings%\%current user%\Application Data\Adobe\Acrobat\9.0\SharedDataEvents-journal (0 bytes)

The process iexplore.exe:1064 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\FB_3.tmp.exe (141 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\FB_1.tmp.pdf (51 bytes)

The process FB_4.tmp.exe:1728 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\tmp1a4bb9f0.bat (183 bytes)

The process FB_3.tmp.exe:1580 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\tmpc5527499.bat (183 bytes)
%Documents and Settings%\%current user%\Application Data\Gadiyq\noeso.exe (141 bytes)

Registry activity

The process net1.exe:776 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" = "E1 04 01 66 D9 E2 51 F4 66 01 BC 1F 5B 14 14 3B"

The process noeso.exe:1452 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" = "2B 76 16 10 52 A3 9C A5 90 15 CD FC 2B EA 9B 58"

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

The process 7a0bf9c79aa9ce4df069f9d06068325f.exe:748 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" = "6E B9 D6 A9 FA 33 EC F3 74 36 1A D0 9F BE EF 4C"

[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"

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

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

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

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Program Files%\Adobe\Reader 9.0\Reader]
"AcroRd32.exe" = "Adobe Reader 9.3"

[HKLM\System\CurrentControlSet\Control\Session Manager]
"PendingFileRenameOperations" = "\??\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\, , \??\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\,"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

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

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

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

[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]
"FB_4.tmp.exe" = "FB_4.tmp"

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:

[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 process 7a0bf9c79aa9ce4df069f9d06068325f.exe:992 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" = "6A 8C DA 22 15 F5 FC EA 3B A1 15 5B A1 82 8E 21"

[HKCR\S7.Application\CLSID]
"(Default)" = "{405CD8B9-3E65-4BB0-875D-A3B8247D6EE5}"

[HKCR\S7.Application]
"(Default)" = "S7.Application"

[HKCR\CLSID\{405CD8B9-3E65-4BB0-875D-A3B8247D6EE5}]
"(Default)" = "S7.Application"

[HKCR\CLSID\{405CD8B9-3E65-4BB0-875D-A3B8247D6EE5}\ProgID]
"(Default)" = "S7.Application"

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

[HKCR\CLSID\{405CD8B9-3E65-4BB0-875D-A3B8247D6EE5}\InprocHandler32]
"(Default)" = "ole32.dll"

[HKCR\CLSID\{405CD8B9-3E65-4BB0-875D-A3B8247D6EE5}\LocalServer32]
"(Default)" = "c:\7A0BF9~1.EXE"

To automatically run itself each time Windows is booted, the Trojan-PSW adds the following link to its file to the system registry autorun key:

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"help" = "%Documents and Settings%\%current user%\Application Data\InstallDir\help.exe"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
"help" = "%Documents and Settings%\%current user%\Application Data\InstallDir\help.exe"

The process AcroRd32.exe:876 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" = "37 4C 04 BF 30 80 1E E4 62 19 0F C3 75 BC 97 CF"

[HKCU\Software\Microsoft\Coxaex]
"Kyguty" = "41 61 EB 8A 11 27 7F 56 85 CE 31 4B 7D 86 62 21"

The process AcroRd32.exe:1256 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" = "96 4D C9 A3 1D 32 52 CB 77 85 DF 42 8B 99 FA B1"

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

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

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

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

[HKCU\Software\Microsoft\Coxaex]
"Kyguty" = "41 61 EB 8A 11 27 7F 56 85 CE 31 4B 7D 86 62 21"

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

The Trojan-PSW deletes the following registry key(s):

[HKLM\SYSTEM\Acrobatviewercpp304]
[HKLM\SYSTEM\WSZXSGANXFJVAYSXYQGNXKQY]

The process net.exe:1760 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" = "4D B0 F7 D0 BB 61 47 3A 42 02 E7 A0 90 29 A3 B1"

The process iexplore.exe:1064 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" = "68 CC E5 9D 02 37 77 B4 FD 86 F7 7F C4 3D 30 DB"

[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"

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

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

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

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\%Program Files%\Adobe\Reader 9.0\Reader]
"AcroRd32.exe" = "Adobe Reader 9.3"

[HKLM\System\CurrentControlSet\Control\Session Manager]
"PendingFileRenameOperations" = "\??\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\,"

[HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\{b98117e8-75ca-11e2-81b2-000c293708fb}]
"BaseClass" = "Drive"

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

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

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

[HKCU\Software\Microsoft\Windows\ShellNoRoam\MUICache\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp]
"FB_3.tmp.exe" = "FB_3.tmp"

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

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:

[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 process FB_4.tmp.exe:1728 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" = "61 30 75 63 98 3F FC 51 77 B1 93 87 43 45 6F 4D"

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

[HKCU\Software\Microsoft\Coxaex]
"Kyguty" = "41 61 EB 8A 11 27 7F 56 85 CE 31 4B 7D 86 62 21"

The process FB_3.tmp.exe:1580 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" = "44 21 DE 35 B0 FA C7 81 87 9F 3B 68 58 44 1E 69"

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

[HKCU\Software\Microsoft\Coxaex]
"Kyguty" = "41 61 EB 8A 11 27 7F 56 85 CE 31 4B 7D 86 62 21"

Network activity (URLs)

URL IP
hxxp://81.0.104.141/files/serve/config.bin


Rootkit activity

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

HttpSendRequestExA
HttpSendRequestW
InternetReadFileExA
InternetQueryDataAvailable
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:

SetCursorPos
DefMDIChildProcA
DefFrameProcA
DefDlgProcA
GetClipboardData
DefMDIChildProcW
DefFrameProcW
GetUpdateRgn
RegisterClassA
GetDCEx
ReleaseCapture
SetCapture
DefWindowProcA
CallWindowProcA
GetUpdateRect
PeekMessageA
CallWindowProcW
GetMessagePos
GetCursorPos
EndPaint
BeginPaint
DefWindowProcW
RegisterClassExA
GetMessageA
DefDlgProcW
SwitchDesktop
OpenInputDesktop
RegisterClassExW
RegisterClassW
GetCapture
PeekMessageW
GetMessageW
GetWindowDC
TranslateMessage
GetDC
ReleaseDC

The Trojan-PSW installs the following user-mode hooks in WS2_32.dll:

WSASend
send
closesocket

The Trojan-PSW installs the following user-mode hooks in kernel32.dll:

GetFileAttributesExW

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):

    net1.exe:776
    noeso.exe:1452
    7a0bf9c79aa9ce4df069f9d06068325f.exe:748
    7a0bf9c79aa9ce4df069f9d06068325f.exe:992
    AcroRd32.exe:876
    net.exe:1760
    iexplore.exe:1064
    FB_4.tmp.exe:1728
    FB_3.tmp.exe:1580

  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\FB_2.tmp.pdf (51 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\FB_4.tmp.exe (141 bytes)
    %Documents and Settings%\%current user%\Application Data\InstallDir\help.exe (2321 bytes)
    %Documents and Settings%\%current user%\Application Data\Adobe\Acrobat\9.0\SharedDataEvents-journal (1024 bytes)
    %Documents and Settings%\%current user%\Application Data\Adobe\Acrobat\9.0\AdobeCMapFnt09.lst (508 bytes)
    %Documents and Settings%\%current user%\Application Data\Adobe\Acrobat\9.0\USERCACHE.BIN (1444 bytes)
    %Documents and Settings%\%current user%\Application Data\Adobe\Acrobat\9.0\AdobeSysFnt09.lst (31 bytes)
    %Documents and Settings%\%current user%\Local Settings\Application Data\Adobe\Acrobat\9.0\Cache\AcroFnt09.lst (7 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\FB_3.tmp.exe (141 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\FB_1.tmp.pdf (51 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\tmp1a4bb9f0.bat (183 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\tmpc5527499.bat (183 bytes)
    %Documents and Settings%\%current user%\Application Data\Gadiyq\noeso.exe (141 bytes)

  5. Delete the following value(s) in the autorun key (How to Work with System Registry):

    [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
    "help" = "%Documents and Settings%\%current user%\Application Data\InstallDir\help.exe"

    [HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run]
    "help" = "%Documents and Settings%\%current user%\Application Data\InstallDir\help.exe"

  6. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
  7. Reboot the computer.

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