Fake-AV.Win32.FakeRean_782f3dec1e

by malwarelabrobot on December 2nd, 2013 in Malware Descriptions.

Gen:Variant.FakeAlert.88 (BitDefender), Rogue:Win32/FakeRean (Microsoft), HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Packed.2190 (DrWeb), Gen:Variant.FakeAlert.88 (B) (Emsisoft), FakeAlert-Rena.p (McAfee), Trojan.FakeAV!gen69 (Symantec), Trojan.Fakealert (Ikarus), FakeAlert.AEQ (AVG), Win32:MalOb-GR [Cryp] (Avast), TROJ_FAKEAL.SMLA (TrendMicro), Fake-AV.Win32.FakeRean.2.FD, FakeAVWin32FakeRean.YR (Lavasoft MAS)
Behaviour: Trojan, Fake-AV, 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: 782f3dec1efa8afa822038c8e4cb6592
SHA1: f322e6fc191f831a36b8339468318cb99c07eece
SHA256: 20dfd4fc3f05a66636697c4d3c553a71a857eec6cc3f37bf1cdab51b81efc28c
SSDeep: 6144:0OGa5Lt8z25D2v4ESAnfbrdr8LQfVQ3MyUTlP8gOtdoZeyUFPlyT:t5LtFD2vRSAfbrdauVQ3MyUTN8DoZeNj
Size: 348160 bytes
File type: EXE
Platform: WIN32
Entropy: Packed
PEID: MicrosoftVisualCv71EXE, UPolyXv05_v6
Company: no certificate found
Created at: 2011-06-08 02:32:37


Summary:

Fake-AV. FakeAV programs generate exaggerated threat reports on the compromised computer then ask the user to purchase a registered version to remove those reported threats.

Payload

No specific payload has been found.

Process activity

The Fake-AV creates the following process(es):

%original file name%.exe:596

The Fake-AV injects its code into the following process(es):

lfe.exe:544

File activity

The process lfe.exe:544 makes changes in the file system.
The Fake-AV creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
%Documents and Settings%\All Users\Application Data\shk8r7fr0x6mi6761618 (1152 bytes)
%Documents and Settings%\%current user%\Local Settings\Application Data\shk8r7fr0x6mi6761618 (1152 bytes)
%Documents and Settings%\%current user%\Local Settings\Temp\shk8r7fr0x6mi6761618 (1152 bytes)
%Documents and Settings%\%current user%\Templates\shk8r7fr0x6mi6761618 (1152 bytes)
%System%\wbem\Logs\wbemprox.log (76 bytes)

The Fake-AV deletes the following file(s):

C:\%original file name%.exe (0 bytes)

The process %original file name%.exe:596 makes changes in the file system.
The Fake-AV creates and/or writes to the following file(s):

%Documents and Settings%\%current user%\Local Settings\Application Data\lfe.exe (1629 bytes)

Registry activity

The process lfe.exe:544 makes changes in the system registry.
The Fake-AV creates and/or sets the following values in system registry:

[HKCU\Software\Classes\exefile\shell\open\command]
"(Default)" = "%Documents and Settings%\%current user%\Local Settings\Application Data\lfe.exe -a %1 %*"

[HKCU\Software\Classes\exefile\shell\runas\command]
"IsolatedCommand" = "%1 %*"

[HKCU\Software\Classes\exefile]
"(Default)" = "Application"

[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\Clients\StartMenuInternet]
"(Default)" = "IEXPLORE.EXE"

[HKCU\Software\Classes\exefile\shell\open\command]
"IsolatedCommand" = "%1 %*"

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

[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]
"Templates" = "%Documents and Settings%\%current user%\Templates"

[HKCU\Software\Classes\exefile\shell\runas\command]
"(Default)" = "%1 %*"

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

[HKCU\Software\Classes\.exe\shell\open\command]
"IsolatedCommand" = "%1 %*"

[HKCU\Software\Classes\exefile\DefaultIcon]
"(Default)" = "%1"

[HKCU\Software\Classes\.exe]
"(Default)" = "exefile"

[HKLM\SOFTWARE\Clients\StartMenuInternet\IEXPLORE.EXE\shell\open\command]
"(Default)" = "%Documents and Settings%\%current user%\Local Settings\Application Data\lfe.exe -a %Program Files%\Internet Explorer\iexplore.exe"

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

[HKCU\Software\Classes\exefile]
"Content Type" = "application/x-msdownload"

[HKCU\Software\Classes\.exe\shell\runas\command]
"(Default)" = "%1 %*"
"IsolatedCommand" = "%1 %*"

[HKCU\Software\Microsoft\Windows]
"Identity" = "1312246067"

[HKCU\Software\Classes\.exe\shell\open\command]
"(Default)" = "%Documents and Settings%\%current user%\Local Settings\Application Data\lfe.exe -a %1 %*"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path2]
"CacheLimit" = "65452"
"CachePath" = "%Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\Cache2"

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "80 D9 E1 DE 66 40 CD 51 73 E4 DD 02 8D C1 85 F1"

[HKCU\Software\Classes\.exe\DefaultIcon]
"(Default)" = "%1"

[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\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"CacheLimit" = "65452"

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

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path3]
"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\Classes\.exe]
"Content Type" = "application/x-msdownload"

The process %original file name%.exe:596 makes changes in the system registry.
The Fake-AV creates and/or sets the following values in system registry:

[HKLM\SOFTWARE\Microsoft\Cryptography\RNG]
"Seed" = "31 BC 09 65 E4 A4 AE E7 87 59 EC 0D 7E 7F CE 56"

[HKLM\SOFTWARE\Microsoft\Security Center]
"AntiVirusOverride" = "1"

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

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DoNotAllowExceptions" = "0"

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

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile]
"DisableNotifications" = "1"

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

[HKLM\SOFTWARE\Microsoft\Security Center]
"FirewallDisableNotify" = "1"
"UpdatesDisableNotify" = "1"
"FirewallOverride" = "1"

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile]
"EnableFirewall" = "0"

"DoNotAllowExceptions" = "0"

Antivirus notifications are disabled:

[HKLM\SOFTWARE\Microsoft\Security Center]
"AntiVirusDisableNotify" = "1"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"ctfmon.exe" = "%System%\ctfmon.exe"

A firewall is disabled:

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"EnableFirewall" = "0"

The following service is disabled:

[HKLM\System\CurrentControlSet\Services\SharedAccess]
"Start" = "4"

Firewall notifications are disabled:

[HKLM\System\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile]
"DisableNotifications" = "1"

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

[HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
"413828066" = "%Documents and Settings%\%current user%\Local Settings\Application Data\lfe.exe"

Network activity (URLs)

URL IP
kovebesovurobo.com Unresolvable
burigiqesulaja.com Unresolvable
cajicuxekopyny.com Unresolvable
zykufareqybo.com Unresolvable
wucucudizo.com Unresolvable
sacunifupacamy.com Unresolvable
bajofehadipef.com Unresolvable
dyjazuxupurox.com Unresolvable


HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

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. Terminate malicious process(es) (How to End a Process With the Task Manager):

    %original file name%.exe:596

  2. Delete the original Fake-AV file.
  3. Delete or disinfect the following files created/modified by the Fake-AV:

    %Documents and Settings%\%current user%\Local Settings\Temporary Internet Files\Content.IE5\desktop.ini (67 bytes)
    %Documents and Settings%\All Users\Application Data\shk8r7fr0x6mi6761618 (1152 bytes)
    %Documents and Settings%\%current user%\Local Settings\Application Data\shk8r7fr0x6mi6761618 (1152 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\shk8r7fr0x6mi6761618 (1152 bytes)
    %Documents and Settings%\%current user%\Templates\shk8r7fr0x6mi6761618 (1152 bytes)
    %System%\wbem\Logs\wbemprox.log (76 bytes)
    %Documents and Settings%\%current user%\Local Settings\Application Data\lfe.exe (1629 bytes)

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

    [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
    "ctfmon.exe" = "%System%\ctfmon.exe"

    [HKCU\Software\Microsoft\Windows\CurrentVersion\Run]
    "413828066" = "%Documents and Settings%\%current user%\Local Settings\Application Data\lfe.exe"

  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.

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