Skip to main content

FakeAV.Win32.FakeRean_77dc7c320e


Gen:Variant.Kazy.196559 (BitDefender), Rogue:Win32/FakeRean (Microsoft), HEUR:Trojan.Win32.Generic (Kaspersky), Trojan.Win32.Kryptik.y (v) (VIPRE), Gen:Variant.Kazy.196559 (B) (Emsisoft), Fake-Rena-FPG!77DC7C320E9E (McAfee), Trojan.FakeAV!gen110 (Symantec), Trojan.Win32.FakeAV (Ikarus), Gen:Variant.Kazy.196559 (FSecure), Generic_r.CPC (AVG), Win32:Kryptik-MHF [Trj] (Avast), TROJ_FAKEAV.SMJ7 (TrendMicro), Fake-AV.Win32.FakeRean.FD, FakeAVWin32FakeRean.YR (Lavasoft MAS)Behaviour: Trojan, Fake-AV

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

Summary

MD5: 77dc7c320e9e0fc41ed9a145120e15f8

SHA1: 353a6d03dc00f647769985bab41058ac72aac29e

SHA256: 20abb13fa444c4905adb279509e4fceb8955a96d042d2ae3b5b375a20af88b23

SSDeep: 24576:slBgyUxR82 rsejXd4Ynj/J2Sl2DIODVFS7KbcJ4yBtABu:slBgtR82exptnjxVNsV6BmB

Size: 881664 bytes

File type: EXE

Platform: WIN32

Entropy: Packed

PEID: UPolyXv05_v6

Company: Firseria

Created at: 2013-07-01 16:55:40

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.

Dynamic Analysis

Payload

No specific payload has been found.

Process activity

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

%original file name%.exe:744

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

spoolsv.exe:1424
tdefender.exe:504

File activity

The process spoolsv.exe:1424 makes changes in the file system.


The Fake-AV creates and/or writes to the following file(s):

%Documents and Settings%\All Users\Desktop\Internet Security Pro.lnk (802 bytes)
%Documents and Settings%\All Users\Application Data\tdefender (7700 bytes)

The process %original file name%.exe:744 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\Temp\1.tmp (13682 bytes)

Registry activity

The process spoolsv.exe:1424 makes changes in the system registry.


The Fake-AV creates and/or sets the following values in system registry:

[HKU\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Start Menu" = ""
"Personal" = ""

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

[HKU\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"My Pictures" = ""

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

[HKU\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"AppData" = "%Documents and Settings%\LocalService\Application Data"

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

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

[HKLM\System\CurrentControlSet\Control\Print\Providers\12f3fc]
"Name" = "C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\1.tmp"

[HKU\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cache" = "%Documents and Settings%\LocalService\Local Settings\Temporary Internet Files"

[HKU\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\A]
"BaseClass" = "Drive"

[HKU\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Cookies" = "%Documents and Settings%\LocalService\Cookies"

[HKU\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings\Connections]
"SavedLegacySettings" = "3C 00 00 00 03 00 00 00 01 00 00 00 00 00 00 00"

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

[HKU\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\C]
"BaseClass" = "Drive"

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

[HKU\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"Desktop" = ""

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

[HKU\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\D]
"BaseClass" = "Drive"

[HKU\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\MountPoints2\F]
"BaseClass" = "Drive"

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

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

[HKU\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Explorer\Shell Folders]
"History" = "%Documents and Settings%\LocalService\Local Settings\History"

[HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Internet Settings\Cache\Paths\path4]
"CacheLimit" = "65452"

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

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

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

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

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

[HKLM\System\CurrentControlSet\Control\Print\Providers]
"Order" = "LanMan Print Services, Internet Print Provider, 12f3fc"

Proxy settings are disabled:

[HKU\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyEnable" = "0"

The Fake-AV deletes the following registry key(s):

[HKLM\System\CurrentControlSet\Control\Print\Providers\12f3fc]

The Fake-AV deletes the following value(s) in system registry:

[HKU\.DEFAULT\Software\Microsoft\Windows\CurrentVersion\Internet Settings]
"ProxyOverride"
"AutoConfigURL"
"ProxyServer"

The process tdefender.exe:504 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" = "11 7B 21 B4 A2 0D 4F 6C B1 1A 91 86 DB 67 0F 0C"

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

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

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

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

The process %original file name%.exe:744 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" = "4B CB 43 9A B1 22 C9 08 A7 94 3A 4A 15 65 DF 55"

[HKLM\System\CurrentControlSet\Control\Session Manager]
"PendingFileRenameOperations" = "\??\C:\DOCUME~1\"%CurrentUserName%"\LOCALS~1\Temp\2.tmp,"

Network activity (URLs)

URL IP
hxxp://twinkcam.net/images/s.php?id=95.274.86.20.50
hxxp://cinnamyn.com/images/s.php?id=95.2216.17.105.36


HOSTS file anomalies

No changes have been detected.

Rootkit activity

No anomalies have been detected.

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

    %original file name%.exe:744

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

    %Documents and Settings%\All Users\Desktop\Internet Security Pro.lnk (802 bytes)
    %Documents and Settings%\All Users\Application Data\tdefender (7700 bytes)
    %Documents and Settings%\%current user%\Local Settings\Temp\1.tmp (13682 bytes)

  4. Clean the Temporary Internet Files folder, which may contain infected files (How to clean Temporary Internet Files folder).
  5. 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