Windows 7 security fail

raj11650

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Windows 7 still allows unsafe files to be disguised as safe files

The good folks at F-Secure uncover the first Windows 7 security fail … and it’s a classic.

The issue in question is nothing new. In fact, it’s been around for so long that I didn’t even bother checking to see if it had been fixed.

You see, in Windows NT, 2000, XP and Vista, Explorer used to Hide extensions for known file types. And virus writers used this “feature” to make people mistake executables for stuff such as document files.

The trick was to rename VIRUS.EXE to VIRUS.TXT.EXE or VIRUS.JPG.EXE, and Windows would hide the .EXE part of the filename.
Additionally, virus writers would change the icon inside the executable to look like the icon of a text file or an image, and everybody would be fooled.
Surely this won’t work in Windows 7.

Lets try.

Hmm. It sure looks like a text file in Explorer:

05-05-2009-15-43-16.jpg
Read More
 

My Computer

Computer Manufacturer/Model Number
Custom Build
OS
win 7 build 7600.16385 x64
CPU
AMD Athlon Dual core 7750 2.7GHz
Motherboard
Gigabyte GA78MA s2h
Memory
4GB 800Mhz
Graphics Card(s)
ATI HD 3200 IGP
Monitor(s) Displays
Acer 15 inch
Screen Resolution
1280x720
Hard Drives
Seagate 1 TB
Keyboard
Logitech
Mouse
Logitech
Internet Speed
Airtel DSL 2Mbps
hehe.... yea... had forgotten about all this myself... back on 98 as well if i recall correctly... is why enabling the file extensions is one of the first batch of steps i do after a fresh install, while updates are downloading. Freaky stupid to see it still acting and how it acts with 7 as described/shown in the pic
 

My Computer

Computer Manufacturer/Model Number
CUSTOM
OS
XP/win7 x86 build 7127
CPU
Athlon64 X2 DUAL 4200+ 2.21ghz
Motherboard
ASUS K8 PRO SLI
Memory
2GB Dual Chan DDR2 Corsair
Graphics Card(s)
Nvidia 6800GT
Sound Card
nvidia
Monitor(s) Displays
19' LCD
Screen Resolution
1280x1024
Hard Drives
WD 250, 2x500, 2x1TB IDE/USB
WD 250 SATA (system)
SEAGATE 120 Sata
PSU
coolermaster 450
Case
SUPERFLOWER
Cooling
1 HDD bay fan, 5x80mm Case Fans, AEROGATE II Fan/Temp
Keyboard
MS wireless
Mouse
MS Wireless
Internet Speed
fassssssssst
Can MS really overlook such stupid mistakes? I mean, they make millions of dollars a year, they can afford it.....
 

My Computer

OS
Windows Seven 64-bit
CPU
Intel Core i5 3.20Ghz
Motherboard
Asus
Memory
8gb
Graphics Card(s)
Nvidia GTS 250
Monitor(s) Displays
Asus Display
Screen Resolution
1980x1080
Hard Drives
1tb
Cooling
Fans?
Keyboard
Razer Lachosiasfaad something
Mouse
Razer deathadder
Internet Speed
Cable
which i why i always have show filetypes on always...
there is no reason not to have it on by default
so in my POV there is no reason why MS would not show that as the default..:)
 

My Computer

Computer Manufacturer/Model Number
Tx2500z Tablet Pc/Homemade Server
OS
Windows 7 Ult x64(x2), HomePrem x32(x4), Server 08 (+VM), 08 R2 (VM) , SuSe 11.2 (VM), XP 32 (VM)
CPU
Turion X2 ultra (oh well came with laptop)/P4 @3.2 (yes P4)
Motherboard
IDK HP Motherboard / Intel DG965SS
Memory
OCZ Dual Channel 4GB kit/ 1gb Dual Channel
Graphics Card(s)
HD 3200 graphics /GMA x3100 (yay for intergrated!!)
Sound Card
Realtek HD Audio(mic working, well sort of)/Siig IC-70012
Monitor(s) Displays
built-in Hp 12" laptop screen/ Acer 19"
Screen Resolution
1280x800 /1440x900
Cooling
All Air Cooled
Mouse
Logi MX Rev. /MS Wheel Optical 1.1A /Logitech Optical Mouse
Internet Speed
College baby but its still routed through vpn to 1536k...
Other Info
love my wacom pen and pressure sensitivity...
wished it worked in 7, SUSE for that matter though
+1 - I turn that on, as well as show hidden files *and* system files. SOP on my end for any machine I am on that I am not restricted out of ....
 

My Computers

System One System Two

  • Computer type
    PC/Desktop
    Computer Manufacturer/Model Number
    The Beast Model A (homebrew)
    OS
    Windows 11 21H2 Current build
    CPU
    AMD Ryzen 9 3950X
    Motherboard
    MSI MEG X570 GODLIKE
    Memory
    4 * 32 GB - Corsair Vengeance 3600 MHz
    Graphics Card(s)
    EVGA GeForce RTX 3080 Ti XC3 ULTRA GAMING (12G-P5-3955-KR)
    Sound Card
    Realtek® ALC1220 Codec
    Monitor(s) Displays
    2x Eve Spectrum ES07D03 4K Gaming Monitor (Matte) | Eve Spec
    Screen Resolution
    3x 3840 x 2160
    Hard Drives
    3x Samsung 980 Pro NVMe PCIe 4 M.2 2 TB SSD (MZ-V8P2T0B/AM) } 3x Sabrent Rocket NVMe 4.0 1 TB SSD
    PSU
    PC Power & Cooling’s Silencer Series 1050 Watt, 80 Plus Plat
    Case
    Fractal Design Define 7 XL Dark ATX Full Tower Case
    Cooling
    SteelSeries Apex Pro Wired Gaming Keyboard
    Keyboard
    SteelSeries Apex Pro
    Mouse
    Logitech MX Master 3S | MX Master 3 for business
    Internet Speed
    AT&T LightSpeed Gigabit Duplex Ftth
    Antivirus
    Windows Defender + MB 3
    Browser
    Nightly (default) + Firefox (stable),Chrome, Edge
  • Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Dell Latitude E5470
    OS
    ChromeOS Flex Dev Channel (current)
    CPU
    Intel(R) Core(TM) i5-6300U CPU @ 2.40GHz, 2501 Mhz, 2 Core(s), 4 Logical Processor(s)
    Motherboard
    Dell
    Memory
    16 GB
    Graphics Card(s)
    Intel(R) HD Graphics 520
    Sound Card
    Intel(R) HD Graphics 520 + RealTek Audio
    Monitor(s) Displays
    Dell laptop display 15"
    Screen Resolution
    1920 * 1080
    Hard Drives
    Toshiba 128GB M.2 22300 drive
    INTEL Cherryville 520 Series SSDSC2CW180A 180 GB SATA III SSD
    PSU
    Dell
    Case
    Dell
    Cooling
    Dell
    Keyboard
    Dell
    Mouse
    Logitech MX Master 3S (shared w. Sys 1) | Dell TouchPad
    Internet Speed
    AT&T LightSpeed Gigabit Duplex Ftth
+1 - I turn that on, as well as show hidden files *and* system files. SOP on my end for any machine I am on that I am not restricted out of ....

++1 on that (or would that be 1++...:p)
forgot about that and like was said before is one of the first things done in my system...:)
 

My Computer

Computer Manufacturer/Model Number
Tx2500z Tablet Pc/Homemade Server
OS
Windows 7 Ult x64(x2), HomePrem x32(x4), Server 08 (+VM), 08 R2 (VM) , SuSe 11.2 (VM), XP 32 (VM)
CPU
Turion X2 ultra (oh well came with laptop)/P4 @3.2 (yes P4)
Motherboard
IDK HP Motherboard / Intel DG965SS
Memory
OCZ Dual Channel 4GB kit/ 1gb Dual Channel
Graphics Card(s)
HD 3200 graphics /GMA x3100 (yay for intergrated!!)
Sound Card
Realtek HD Audio(mic working, well sort of)/Siig IC-70012
Monitor(s) Displays
built-in Hp 12" laptop screen/ Acer 19"
Screen Resolution
1280x800 /1440x900
Cooling
All Air Cooled
Mouse
Logi MX Rev. /MS Wheel Optical 1.1A /Logitech Optical Mouse
Internet Speed
College baby but its still routed through vpn to 1536k...
Other Info
love my wacom pen and pressure sensitivity...
wished it worked in 7, SUSE for that matter though
and if someone wants to see the extensions i have put together this little tutoiral, lol

;)

-in the start menu search box type in 'show hidden files and folders' (minus the quote marks of course)
-click on the folder
-uncheck the 'hide extensions for known file types'
-done (that was easy)
 

My Computer

Computer Manufacturer/Model Number
Dell Vostro 1000
OS
Windows 7 Ultimate x86
CPU
AMD Sempron 3600+
Graphics Card(s)
ATI Radeon Xpress 1150
Monitor(s) Displays
Generic PnP Monitor
Screen Resolution
1200 x 800
Hard Drives
WD Scorpio Blue 500 GB (WD5000BEVT)
Mouse
Logitech V320 Cordless Optical Mouse
Someone will report it and MS will patch it up..
 

My Computer

OS
Win7
CPU
Intel E8300 @ 2.83
Motherboard
nVidia
Memory
2 Gigs
Graphics Card(s)
nVidia 9800GT
Monitor(s) Displays
Acer V173
Hard Drives
500GB HD
Actually, you can get away with typing
Code:
show hid
and that should be sufficient for bringing up that setting....

Also, you can use the arrow keys to navigate instead of clicking on the shortcut, *and* you can simply hit [ENTER] after typing that in and the shortcut folder shows in the list.....
 

My Computers

System One System Two

  • Computer type
    PC/Desktop
    Computer Manufacturer/Model Number
    The Beast Model A (homebrew)
    OS
    Windows 11 21H2 Current build
    CPU
    AMD Ryzen 9 3950X
    Motherboard
    MSI MEG X570 GODLIKE
    Memory
    4 * 32 GB - Corsair Vengeance 3600 MHz
    Graphics Card(s)
    EVGA GeForce RTX 3080 Ti XC3 ULTRA GAMING (12G-P5-3955-KR)
    Sound Card
    Realtek® ALC1220 Codec
    Monitor(s) Displays
    2x Eve Spectrum ES07D03 4K Gaming Monitor (Matte) | Eve Spec
    Screen Resolution
    3x 3840 x 2160
    Hard Drives
    3x Samsung 980 Pro NVMe PCIe 4 M.2 2 TB SSD (MZ-V8P2T0B/AM) } 3x Sabrent Rocket NVMe 4.0 1 TB SSD
    PSU
    PC Power & Cooling’s Silencer Series 1050 Watt, 80 Plus Plat
    Case
    Fractal Design Define 7 XL Dark ATX Full Tower Case
    Cooling
    SteelSeries Apex Pro Wired Gaming Keyboard
    Keyboard
    SteelSeries Apex Pro
    Mouse
    Logitech MX Master 3S | MX Master 3 for business
    Internet Speed
    AT&T LightSpeed Gigabit Duplex Ftth
    Antivirus
    Windows Defender + MB 3
    Browser
    Nightly (default) + Firefox (stable),Chrome, Edge
  • Computer type
    PC/Desktop
    System Manufacturer/Model Number
    Dell Latitude E5470
    OS
    ChromeOS Flex Dev Channel (current)
    CPU
    Intel(R) Core(TM) i5-6300U CPU @ 2.40GHz, 2501 Mhz, 2 Core(s), 4 Logical Processor(s)
    Motherboard
    Dell
    Memory
    16 GB
    Graphics Card(s)
    Intel(R) HD Graphics 520
    Sound Card
    Intel(R) HD Graphics 520 + RealTek Audio
    Monitor(s) Displays
    Dell laptop display 15"
    Screen Resolution
    1920 * 1080
    Hard Drives
    Toshiba 128GB M.2 22300 drive
    INTEL Cherryville 520 Series SSDSC2CW180A 180 GB SATA III SSD
    PSU
    Dell
    Case
    Dell
    Cooling
    Dell
    Keyboard
    Dell
    Mouse
    Logitech MX Master 3S (shared w. Sys 1) | Dell TouchPad
    Internet Speed
    AT&T LightSpeed Gigabit Duplex Ftth
Actually, you can get away with typing Code:
show hid
and that should be sufficient for bringing up that setting....

Also, you can use the arrow keys to navigate instead of clicking on the shortcut, *and* you can simply hit [ENTER] after typing that in and the shortcut folder shows in the list.....

i know... but that is too easy. i had to make such a simple task a bit more complicated and thus worthy of a tut :p
 

My Computer

Computer Manufacturer/Model Number
Dell Vostro 1000
OS
Windows 7 Ultimate x86
CPU
AMD Sempron 3600+
Graphics Card(s)
ATI Radeon Xpress 1150
Monitor(s) Displays
Generic PnP Monitor
Screen Resolution
1200 x 800
Hard Drives
WD Scorpio Blue 500 GB (WD5000BEVT)
Mouse
Logitech V320 Cordless Optical Mouse
which i why i always have show filetypes on always...
there is no reason not to have it on by default
so in my POV there is no reason why MS would not show that as the default..:)

I agree that it is most beneficial to have it set to show extensions.

MS prob feels it is more aesthetically pleasing to not have it as default.
 

My Computer

Computer Manufacturer/Model Number
Dell Inspiron 1520 (Laptop)/ Home (Desktop)
OS
Windows 7 x64 / Same
CPU
Intel Core 2 Duo T7250 / Intel Core i7 930
Motherboard
Intel 945 / Asus P6X58D-E
Memory
4GB / 6GB
Graphics Card(s)
NVIDIA GeForce 8400M GS / ASUS 1GB
Sound Card
Whatever Dell gave me :-( / Onboard
Monitor(s) Displays
15.4" LCD / Crappy CRT
Hard Drives
Seagate 500GB SATA; 7200 RPM / Seagate 1TB SATA; 7200 RPM
PSU
N/A / OCZ Fatal1ty 550W Modular
Case
N/A / Antec 900
Cooling
Air
Mouse
Microsoft Presenter (Bluetooth)
Hmmm, this is Paranoia on so many levels...

1) The Action Center Flag warns you that you have no Virus Checker because?

2) If the .exe is on your machine something is already wrong.

3) When you download in any browser that I know of, the browser doesn't hide the extension.

4) If the .exe is on removeable media, why are you running stuff you don't know the origins of?

5) See 1. Will tell you if what you are running has a Virus!
 

My Computer

Computer Manufacturer/Model Number
Self Build
OS
Win 7 7201 x64
CPU
AMD Athlon 64 X2 6400
Motherboard
Gigabyte GA-M56S-S3
Memory
8Gb DDR2 6400 (4 x 2)
Graphics Card(s)
NVIDIA GeForce 8800GT
Sound Card
Realtek Hi-Def Onboard
Monitor(s) Displays
Sony Bravia 26"
Screen Resolution
1360 x 768
Hard Drives
2 x WD5000AAKS 500GB (RAID 0)
PSU
OCZ 700W ModXStream
Case
XCLIO A380 Twin Engine
Cooling
Air
Someone will report it and MS will patch it up..

You would think so :) , but as they've known about it since Windows 98 and haven't done anything I doubt they will suddenly see the light :(
 

My Computers

System One System Two

  • Computer type
    PC/Desktop
    Computer Manufacturer/Model Number
    ChillBlast - Custom to my design
    OS
    Windows 11 Pro x64 [Latest Release and Release Preview]
    CPU
    Ryzen 9 5950X, 3.8 - 5.2 MHz
    Motherboard
    Asus Prime X570-Pro
    Memory
    64GB [2 x 32GB] DDR4 3200MHz
    Graphics Card(s)
    4GB NVIDIA GEFORCE GTX 1650 Ti
    Sound Card
    On-board SPDIF to 5.1 System + HDMI [5.1 system]
    Monitor(s) Displays
    32" UHD 32 Bit HDR Monitor + 43" UHD 4K 32Bit HDR TV
    Screen Resolution
    2 x 3840 x 2160 @60Hz
    Hard Drives
    1TB M2 SSD OS, 500GB Fast Access SSD, 2 x 8TB Data + Various Externals from 1TB to 4TB, 10TB NAS
    PSU
    NZXT C750 80 PLUS Gold 750W Modular PSU
    Case
    Workstation Case [Matt Black]
    Cooling
    NZXT Kraken X63 280mm CPU Cooler +2x Quiet Case fans
    Keyboard
    Logitech Wireless MX Keys & K400 + others
    Mouse
    Logitech Wireless MX Master 3S
    Internet Speed
    920 MB Down 50 MB Up
    Antivirus
    BitDefender Total Security Pro
    Browser
    Chrome (always run latest Non-Beta)
    Other Info
    Also run ...
    Laptop - Quad 8GB - Windows 10 Pro x64
    Nexus 7 Android tablet x2
    Samsung 10.2" tablet
    Blackview TAB 8 4G Android Tablet c/w Keyboard
    Wacom Intuos Pro Medium Pen Pad
    Wacom Intuos Pro Small Pen Pad
    Wacom Expresskeys Remote
    Loopdeck+ Graphics Controller
    Shuttle Pro v2 Control
  • Computer type
    Laptop
    System Manufacturer/Model Number
    Dell XPS 17 10750H
    OS
    Windows 11 Pro x64 Latest RP
    CPU
    Intel I7 10750H 5.0GHz
    Motherboard
    Dell XPS
    Memory
    32GB [2x16GB] DDR4 2933 MHz
    Graphics Card(s)
    nVidia GTX1650Ti 4 GB GDDR6
    Sound Card
    Stock [Realtek] 4 Speaker
    Monitor(s) Displays
    17" IPS UHD+ Infinity Edge Touchscreen
    Screen Resolution
    3840 x 2400
    Hard Drives
    2TB M2 NVMe, 4TB External + various 500GB & 1TB External NVMe (also have access to spinner HDD from
    PSU
    Stock
    Case
    Stock XPS Aluminium & Carbon Fibre
    Cooling
    Stock - Active Fan Control
    Keyboard
    Backlit + Various Logitech
    Mouse
    Stock Track Pad + Logitech MX Trackball
    Internet Speed
    72 MB Down 18MB Up
    Browser
    Chrome
    Other Info
    Also run ...
    Laptop - Quad 8GB - Windows 10 Pro x64
    Nexus 7 Android tablet x2
    10.2" tablet
    Sony Z3 Android Smartphone
    Wacom Intuos Pro Medium Pen Pad
    Wacom Intuos Pro Small Pen Pad
    Wacom Expresskeys Remote
    Loopdeck+ Graphics Controller
    Shuttle Pro v2 Control Pad
    10TB NAS
that's why i learn to use i file manager (TC)....win explorer s.u.x.
 

My Computer

Computer Manufacturer/Model Number
my precious
OS
Windows 7 Ultimate 64bit
CPU
Intel Core2 Duo E8400 3.00GHz Wolfdale Box
Motherboard
MSI P35 NEO2-FR
Memory
A-DATA 2 GB DDR2 800+
Graphics Card(s)
Gigabyte GeForce 8800GT Zalman 512MB DDR3 256-bit
Hard Drives
Seagate 320 GB BARRACUDA SATA-II 7200.10
One of the first things I do is enable exentions, I like to see what Im handling and dont need to be hand held by MS.​
 

My Computer

Computer Manufacturer/Model Number
self built
OS
Windows 7 Professional 64-bit
CPU
Intel E8400 3GHz
Motherboard
Intel DX48BT2
Memory
Kingston PC3-10700H 4Gb
Graphics Card(s)
XFX Radeon HD 5850 BlackEd.
Sound Card
Asus Xonar DG
Monitor(s) Displays
2x Samsung SM-T220HD 22"
Screen Resolution
1680x1050 on two monitors
Hard Drives
OCZ Vertex 2 120gb 3.5" (OS)
Seagate Momentus XT 500gb
Samsung F3 1Tb (games)
2x Samsung F1 1Tb
PSU
Thermaltake ToughPower 850w
Case
Thermaltake Armor
Cooling
Scythe Mugen II
Keyboard
Microsoft Comfort Curve USB
Mouse
Razer Diamondback 3G
Internet Speed
8128/443
Hmmm, this is Paranoia on so many levels...

1) The Action Center Flag warns you that you have no Virus Checker because?

2) If the .exe is on your machine something is already wrong.

3) When you download in any browser that I know of, the browser doesn't hide the extension.

4) If the .exe is on removable media, why are you running stuff you don't know the origins of?

5) See 1. Will tell you if what you are running has a Virus!

The weakest link in any security system is, and always will be, the user. The fixing of this long running issue would I feel just add to the other protective systems available.

for example the file "ReadMe.pdf" looks a whole lot more inviting to the user with some knowledge, who knows not to run unknown .EXE files, than when it's displayed as "ReadMe.pdf.exe"

We all know this type of thing should not happen, but it does :( , and every option possible should be protected against.
 

My Computers

System One System Two

  • Computer type
    PC/Desktop
    Computer Manufacturer/Model Number
    ChillBlast - Custom to my design
    OS
    Windows 11 Pro x64 [Latest Release and Release Preview]
    CPU
    Ryzen 9 5950X, 3.8 - 5.2 MHz
    Motherboard
    Asus Prime X570-Pro
    Memory
    64GB [2 x 32GB] DDR4 3200MHz
    Graphics Card(s)
    4GB NVIDIA GEFORCE GTX 1650 Ti
    Sound Card
    On-board SPDIF to 5.1 System + HDMI [5.1 system]
    Monitor(s) Displays
    32" UHD 32 Bit HDR Monitor + 43" UHD 4K 32Bit HDR TV
    Screen Resolution
    2 x 3840 x 2160 @60Hz
    Hard Drives
    1TB M2 SSD OS, 500GB Fast Access SSD, 2 x 8TB Data + Various Externals from 1TB to 4TB, 10TB NAS
    PSU
    NZXT C750 80 PLUS Gold 750W Modular PSU
    Case
    Workstation Case [Matt Black]
    Cooling
    NZXT Kraken X63 280mm CPU Cooler +2x Quiet Case fans
    Keyboard
    Logitech Wireless MX Keys & K400 + others
    Mouse
    Logitech Wireless MX Master 3S
    Internet Speed
    920 MB Down 50 MB Up
    Antivirus
    BitDefender Total Security Pro
    Browser
    Chrome (always run latest Non-Beta)
    Other Info
    Also run ...
    Laptop - Quad 8GB - Windows 10 Pro x64
    Nexus 7 Android tablet x2
    Samsung 10.2" tablet
    Blackview TAB 8 4G Android Tablet c/w Keyboard
    Wacom Intuos Pro Medium Pen Pad
    Wacom Intuos Pro Small Pen Pad
    Wacom Expresskeys Remote
    Loopdeck+ Graphics Controller
    Shuttle Pro v2 Control
  • Computer type
    Laptop
    System Manufacturer/Model Number
    Dell XPS 17 10750H
    OS
    Windows 11 Pro x64 Latest RP
    CPU
    Intel I7 10750H 5.0GHz
    Motherboard
    Dell XPS
    Memory
    32GB [2x16GB] DDR4 2933 MHz
    Graphics Card(s)
    nVidia GTX1650Ti 4 GB GDDR6
    Sound Card
    Stock [Realtek] 4 Speaker
    Monitor(s) Displays
    17" IPS UHD+ Infinity Edge Touchscreen
    Screen Resolution
    3840 x 2400
    Hard Drives
    2TB M2 NVMe, 4TB External + various 500GB & 1TB External NVMe (also have access to spinner HDD from
    PSU
    Stock
    Case
    Stock XPS Aluminium & Carbon Fibre
    Cooling
    Stock - Active Fan Control
    Keyboard
    Backlit + Various Logitech
    Mouse
    Stock Track Pad + Logitech MX Trackball
    Internet Speed
    72 MB Down 18MB Up
    Browser
    Chrome
    Other Info
    Also run ...
    Laptop - Quad 8GB - Windows 10 Pro x64
    Nexus 7 Android tablet x2
    10.2" tablet
    Sony Z3 Android Smartphone
    Wacom Intuos Pro Medium Pen Pad
    Wacom Intuos Pro Small Pen Pad
    Wacom Expresskeys Remote
    Loopdeck+ Graphics Controller
    Shuttle Pro v2 Control Pad
    10TB NAS
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