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After download of FireFox, VTZilla found a virus Trojan/Win32.Occamy

Posted

Hello, after download of firefox, VTzilla has found a virus: 1/ link of the downloaded file: https://www.mozilla.org/en-US/firefox/all/ Language: French for Windows 64-bit Note: I have tried to download in the same page the file in language English (British) for Windows 64-bit, VTZilla found the same virus

2/ Rapport of VTZilla: VTZilla use 65 anti virus, only the anti virus Antiy-AVL found a virus: Trojan/Win32.Occamy

One engine detected this file SHA-256 9734073d0dc233d0c260b8e40178010c1c2bf58bede57dd81e33f17eacefd6dd File name 7zS.sfx File size 37.75 MB Last analysis 2018-09-01 12:46:41 UTC

Maybe is this a false alarm of this anti virus Antiy-AVL, ... maybe not.

Thank you for you answer. Best Regards.

Hello, after download of firefox, VTzilla has found a virus: 1/ link of the downloaded file: https://www.mozilla.org/en-US/firefox/all/ Language: French for Windows 64-bit Note: I have tried to download in the same page the file in language English (British) for Windows 64-bit, VTZilla found the same virus 2/ Rapport of VTZilla: VTZilla use 65 anti virus, only the anti virus Antiy-AVL found a virus: Trojan/Win32.Occamy One engine detected this file SHA-256 9734073d0dc233d0c260b8e40178010c1c2bf58bede57dd81e33f17eacefd6dd File name 7zS.sfx File size 37.75 MB Last analysis 2018-09-01 12:46:41 UTC Maybe is this a false alarm of this anti virus Antiy-AVL, ... maybe not. Thank you for you answer. Best Regards.

Chosen solution

McCoy said

barramon said
after download of firefox, VTzilla has found a virus: 1/ link of the downloaded file:
https://www.mozilla.org/en-US/firefox/all/

That's the official site to download Firefox .......

Maybe is this a false alarm of this anti virus Antiy-AVL, ... maybe not.

No "maybe "  !


Personal note :

With Windows Defender and a safe browser (Firefox of course) it's like being in Fort Knox.

But again : this is my personal opinion.

Please see :

http://tech.firstpost.com/news-analysis/ex-mozilla-firefox-developer-says-anti-virus-software-does-more-harm-than-good-359798.html

And also : https://www.howtogeek.com/239950/dont-use-your-antivirus-browser-extensions-they-can-actually-make-you-less-safe/

Thank you McCoy for your reply and for the links that you have sent, I have readen both and it's very interesting, I am also more confortable in my choice to utilise Defender as an anti virus.

Best regards

Read this answer in context 0

Additional System Details

Installed Plug-ins

  • Shockwave Flash 30.0 r0

Application

  • Firefox 61.0.2
  • User Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:61.0) Gecko/20100101 Firefox/61.0
  • Support URL: https://support.mozilla.org/1/firefox/61.0.2/WINNT/en-US/

Extensions

  • Firefox Lightbeam 2.1.0 (jid1-F9UJ2thwoAm5gQ@jetpack)
  • First Party Isolation 1.3.1 ({33c93ccc-ceed-47d2-9645-805ea58c8a07})
  • Flash and Video Download 3.2.1 ({bee6eb20-01e0-ebd1-da83-080329fb9a3a})
  • Ghostery – Privacy Ad Blocker 8.2.4 (firefox@ghostery.com)
  • google-no-tracking-url 3.0.0 (jid1-zUrvDCat3xoDSQ@jetpack)
  • Privacy Badger 2018.8.22 (jid1-MnnxcxisBPnSXQ@jetpack)
  • Privacy Possum 2018.8.31 (woop-NoopscooPsnSXQ@jetpack)
  • Qwant 4.2.7 (qwantcomforfirefox@jetpack)
  • Video DownloadHelper 7.3.5 ({b9db16a4-6edc-47ec-a1f4-b86292ed211d})
  • VTZilla 2.1.1 (info@virustotal.com)
  • Adblock Plus 3.3.1 ({d10d0bf8-f5b5-c8b4-a8b2-2b9879e08c5d}) (Inactive)
  • Decentraleyes 2.0.6 (jid1-BoFifL9Vbdl2zQ@jetpack) (Inactive)
  • Disconnect 5.18.21 (2.0@disconnect.me) (Inactive)
  • NoScript 10.1.9.1 ({73a6fe31-595d-460b-a920-fcc0f8843232}) (Inactive)
  • Priv8 0.2.3 (id@baku.priv8) (Inactive)
  • Referrer Control 0.5.1 (referrercontrol@qixinglu.com) (Inactive)
  • RequestPolicy Continued 0.5.32 (rpcontinued@requestpolicy.org) (Inactive)
  • uBlock Origin 1.16.20 (uBlock0@raymondhill.net) (Inactive)

Javascript

  • incrementalGCEnabled: True

Graphics

  • adapterDescription: Intel(R) HD Graphics 620
  • adapterDescription2: AMD Radeon(TM) R5 430M
  • adapterDeviceID: 0x5916
  • adapterDeviceID2: 0x6660
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  • adapterRAM: Unknown
  • adapterRAM2: 2048
  • adapterSubsysID: 00000000
  • adapterSubsysID2: 00000000
  • adapterVendorID: 0x8086
  • adapterVendorID2: 0x1002
  • contentUsesTiling: False
  • crashGuards: []
  • direct2DEnabled: True
  • directWriteEnabled: True
  • directWriteVersion: 10.0.17134.1
  • driverDate: 7-24-2017
  • driverDate2: 9-2-2016
  • driverVersion: 22.20.16.4749
  • driverVersion2: 21.19.136.0
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  • numAcceleratedWindows: 1
  • numTotalWindows: 1
  • offMainThreadPaintEnabled: True
  • offMainThreadPaintWorkerCount: 1
  • usesTiling: False
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  • webgl1Extensions: ANGLE_instanced_arrays EXT_blend_minmax EXT_color_buffer_half_float EXT_frag_depth EXT_sRGB EXT_shader_texture_lod EXT_texture_filter_anisotropic EXT_disjoint_timer_query OES_element_index_uint OES_standard_derivatives OES_texture_float OES_texture_float_linear OES_texture_half_float OES_texture_half_float_linear OES_vertex_array_object WEBGL_color_buffer_float WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_depth_texture WEBGL_draw_buffers WEBGL_lose_context
  • webgl1Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 620 Direct3D11 vs_5_0 ps_5_0)
  • webgl1Version: OpenGL ES 2.0 (ANGLE 2.1.0.fcbca0e873c3)
  • webgl1WSIInfo: EGL_VENDOR: Google Inc. (adapter LUID: 000000000001442d) EGL_VERSION: 1.4 (ANGLE 2.1.0.fcbca0e873c3) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses
  • webgl2DriverExtensions: GL_ANGLE_client_arrays GL_ANGLE_depth_texture GL_ANGLE_framebuffer_blit GL_ANGLE_framebuffer_multisample GL_ANGLE_instanced_arrays GL_ANGLE_lossy_etc_decode GL_ANGLE_multiview GL_ANGLE_pack_reverse_row_order GL_ANGLE_program_cache_control GL_ANGLE_request_extension GL_ANGLE_robust_client_memory GL_ANGLE_texture_compression_dxt3 GL_ANGLE_texture_compression_dxt5 GL_ANGLE_texture_usage GL_ANGLE_translated_shader_source GL_CHROMIUM_bind_generates_resource GL_CHROMIUM_bind_uniform_location GL_CHROMIUM_color_buffer_float_rgb GL_CHROMIUM_color_buffer_float_rgba GL_CHROMIUM_copy_compressed_texture GL_CHROMIUM_copy_texture GL_CHROMIUM_sync_query GL_EXT_blend_minmax GL_EXT_color_buffer_float GL_EXT_color_buffer_half_float GL_EXT_debug_marker GL_EXT_discard_framebuffer GL_EXT_disjoint_timer_query GL_EXT_draw_buffers GL_EXT_frag_depth GL_EXT_map_buffer_range GL_EXT_occlusion_query_boolean GL_EXT_read_format_bgra GL_EXT_robustness GL_EXT_sRGB GL_EXT_shader_texture_lod GL_EXT_texture_compression_dxt1 GL_EXT_texture_compression_s3tc_srgb GL_EXT_texture_filter_anisotropic GL_EXT_texture_format_BGRA8888 GL_EXT_texture_norm16 GL_EXT_texture_rg GL_EXT_texture_storage GL_EXT_unpack_subimage GL_KHR_debug GL_NV_EGL_stream_consumer_external GL_NV_fence GL_NV_pack_subimage GL_NV_pixel_buffer_object GL_OES_EGL_image GL_OES_EGL_image_external GL_OES_EGL_image_external_essl3 GL_OES_compressed_ETC1_RGB8_texture GL_OES_depth32 GL_OES_element_index_uint GL_OES_get_program_binary GL_OES_mapbuffer GL_OES_packed_depth_stencil GL_OES_rgb8_rgba8 GL_OES_standard_derivatives GL_OES_surfaceless_context GL_OES_texture_float GL_OES_texture_float_linear GL_OES_texture_half_float GL_OES_texture_half_float_linear GL_OES_texture_npot GL_OES_vertex_array_object
  • webgl2Extensions: EXT_color_buffer_float EXT_texture_filter_anisotropic EXT_disjoint_timer_query OES_texture_float_linear WEBGL_compressed_texture_s3tc WEBGL_compressed_texture_s3tc_srgb WEBGL_debug_renderer_info WEBGL_debug_shaders WEBGL_lose_context
  • webgl2Renderer: Google Inc. -- ANGLE (Intel(R) HD Graphics 620 Direct3D11 vs_5_0 ps_5_0)
  • webgl2Version: OpenGL ES 3.0 (ANGLE 2.1.0.fcbca0e873c3)
  • webgl2WSIInfo: EGL_VENDOR: Google Inc. (adapter LUID: 000000000001442d) EGL_VERSION: 1.4 (ANGLE 2.1.0.fcbca0e873c3) EGL_EXTENSIONS: EGL_EXT_create_context_robustness EGL_ANGLE_d3d_share_handle_client_buffer EGL_ANGLE_d3d_texture_client_buffer EGL_ANGLE_surface_d3d_texture_2d_share_handle EGL_ANGLE_query_surface_pointer EGL_ANGLE_window_fixed_size EGL_ANGLE_keyed_mutex EGL_ANGLE_surface_orientation EGL_ANGLE_direct_composition EGL_NV_post_sub_buffer EGL_KHR_create_context EGL_EXT_device_query EGL_KHR_image EGL_KHR_image_base EGL_KHR_gl_texture_2D_image EGL_KHR_gl_texture_cubemap_image EGL_KHR_gl_renderbuffer_image EGL_KHR_get_all_proc_addresses EGL_KHR_stream EGL_KHR_stream_consumer_gltexture EGL_NV_stream_consumer_gltexture_yuv EGL_ANGLE_flexible_surface_compatibility EGL_ANGLE_stream_producer_d3d_texture EGL_ANGLE_create_context_webgl_compatibility EGL_CHROMIUM_create_context_bind_generates_resource EGL_CHROMIUM_sync_control EGL_EXT_pixel_format_float EGL_KHR_surfaceless_context EGL_ANGLE_display_texture_share_group EGL_ANGLE_create_context_client_arrays EGL_ANGLE_program_cache_control EGL_ANGLE_robust_resource_initialization EGL_EXTENSIONS(nullptr): EGL_EXT_client_extensions EGL_EXT_platform_base EGL_EXT_platform_device EGL_ANGLE_platform_angle EGL_ANGLE_platform_angle_d3d EGL_ANGLE_device_creation EGL_ANGLE_device_creation_d3d11 EGL_ANGLE_experimental_present_path EGL_KHR_client_get_all_proc_addresses
  • windowLayerManagerRemote: True
  • windowLayerManagerType: Direct3D 11
  • windowUsingAdvancedLayers: True

Modified Preferences

Misc

  • User JS: No
  • Accessibility: No
WestEnd
  • Top 25 Contributor
60 solutions 5376 answers

Not a FF issue but your security program issue. I have no trouble download and installing FF EN from that site.

Not a FF issue but your security program issue. I have no trouble download and installing FF EN from that site.
McCoy
  • Top 10 Contributor
520 solutions 4894 answers

barramon said

after download of firefox, VTzilla has found a virus: 1/ link of the downloaded file:
https://www.mozilla.org/en-US/firefox/all/

That's the official site to download Firefox .......

Maybe is this a false alarm of this anti virus Antiy-AVL, ... maybe not.

No "maybe "  !


Personal note :

With Windows Defender and a safe browser (Firefox of course) it's like being in Fort Knox.

But again : this is my personal opinion.

Please see :

http://tech.firstpost.com/news-analysis/ex-mozilla-firefox-developer-says-anti-virus-software-does-more-harm-than-good-359798.html

And also : https://www.howtogeek.com/239950/dont-use-your-antivirus-browser-extensions-they-can-actually-make-you-less-safe/

''barramon [[#question-1231956|said]]'' <blockquote> after download of firefox, VTzilla has found a virus: 1/ link of the downloaded file: <BR>https://www.mozilla.org/en-US/firefox/all/ </blockquote> That's the ''official'' site to download Firefox ....... <blockquote> Maybe is this a false alarm of this anti virus Antiy-AVL, ... maybe not. </blockquote> No "maybe " ! ---------------------------------------------------------------------------------------------------------- Personal note : With Windows Defender and a safe browser (Firefox of course) it's like being in Fort Knox. But again : this is my personal opinion. Please see : http://tech.firstpost.com/news-analysis/ex-mozilla-firefox-developer-says-anti-virus-software-does-more-harm-than-good-359798.html And also : https://www.howtogeek.com/239950/dont-use-your-antivirus-browser-extensions-they-can-actually-make-you-less-safe/

Question owner

WestEnd said

Not a FF issue but your security program issue. I have no trouble download and installing FF EN from that site.

Thank you WestEnd for your answer, I was concerned that the file to be downloaded was infected. Best regards

''WestEnd [[#answer-1149130|said]]'' <blockquote> Not a FF issue but your security program issue. I have no trouble download and installing FF EN from that site. </blockquote> Thank you WestEnd for your answer, I was concerned that the file to be downloaded was infected. Best regards

Chosen Solution

McCoy said

barramon said
after download of firefox, VTzilla has found a virus: 1/ link of the downloaded file:
https://www.mozilla.org/en-US/firefox/all/

That's the official site to download Firefox .......

Maybe is this a false alarm of this anti virus Antiy-AVL, ... maybe not.

No "maybe "  !


Personal note :

With Windows Defender and a safe browser (Firefox of course) it's like being in Fort Knox.

But again : this is my personal opinion.

Please see :

http://tech.firstpost.com/news-analysis/ex-mozilla-firefox-developer-says-anti-virus-software-does-more-harm-than-good-359798.html

And also : https://www.howtogeek.com/239950/dont-use-your-antivirus-browser-extensions-they-can-actually-make-you-less-safe/

Thank you McCoy for your reply and for the links that you have sent, I have readen both and it's very interesting, I am also more confortable in my choice to utilise Defender as an anti virus.

Best regards

''McCoy [[#answer-1149139|said]]'' <blockquote> ''barramon [[#question-1231956|said]]'' <blockquote> after download of firefox, VTzilla has found a virus: 1/ link of the downloaded file: <BR>https://www.mozilla.org/en-US/firefox/all/ </blockquote> That's the ''official'' site to download Firefox ....... <blockquote> Maybe is this a false alarm of this anti virus Antiy-AVL, ... maybe not. </blockquote> No "maybe " ! ---------------------------------------------------------------------------------------------------------- Personal note : With Windows Defender and a safe browser (Firefox of course) it's like being in Fort Knox. But again : this is my personal opinion. Please see : http://tech.firstpost.com/news-analysis/ex-mozilla-firefox-developer-says-anti-virus-software-does-more-harm-than-good-359798.html And also : https://www.howtogeek.com/239950/dont-use-your-antivirus-browser-extensions-they-can-actually-make-you-less-safe/ </blockquote> Thank you McCoy for your reply and for the links that you have sent, I have readen both and it's very interesting, I am also more confortable in my choice to utilise Defender as an anti virus. Best regards
Shadow110 1072 solutions 14836 answers

Hi, there will always be false/positives also more chance of a error with that number if scanners. https://www.virustotal.com

I will say that if you have something already on your system by installing or updating it is possible to set it loose. When in doubt https://www.malwarebytes.com/

Hi, there will always be false/positives also more chance of a error with that number if scanners. https://www.virustotal.com I will say that if you have something already on your system by installing or updating it is possible to set it loose. When in doubt https://www.malwarebytes.com/
cor-el
  • Top 10 Contributor
  • Moderator
17419 solutions 157385 answers

Helpful Reply

7zS.sfx is the 7-ZIP self extractor stub from 7-ZIP that is used by Mozilla to pack the actual Firefox program with the 7-ZIP archive utility. Apparently VTZilla doesn't like this 7-ZIP stub and flags all applications as viruses.

<b>7zS.sfx</b> is the 7-ZIP self extractor stub from 7-ZIP that is used by Mozilla to pack the actual Firefox program with the 7-ZIP archive utility. Apparently VTZilla doesn't like this 7-ZIP stub and flags all applications as viruses.
James
  • Moderator
1594 solutions 11232 answers

Helpful Reply

A small number of Antivirus like Antiy-AVL, Norton and Cylance has done false positives with Firefox on Windows including on virustotal over the years.


Pkshadow said

I will say that if you have something already on your system by installing or updating it is possible to set it loose.

WestEnd said

Not a FF issue but your security program issue. I have no trouble download and installing FF EN from that site.

Not due to any malware on Windows as for example Antiy-AVL is doing a false positive with the French Win64 Firefox 61.0.2 on https://www.virustotal.com/#/file/9734073d0dc233d0c260b8e40178010c1c2bf58bede57dd81e33f17eacefd6dd/detection

It is having a issue with 7zS.sfx as cor-el mentioned if you look in details.

VTzilla is a extension for Firefox for the VirusTotal. https://www.virustotal.com/en/documentation/browser-extensions/

A small number of Antivirus like Antiy-AVL, Norton and Cylance has done false positives with Firefox on Windows including on virustotal over the years. ''Pkshadow [[#answer-1149241|said]]'' <blockquote> I will say that if you have something already on your system by installing or updating it is possible to set it loose. </blockquote> ''WestEnd [[#answer-1149130|said]]'' <blockquote> Not a FF issue but your security program issue. I have no trouble download and installing FF EN from that site. </blockquote> Not due to any malware on Windows as for example Antiy-AVL is doing a false positive with the French Win64 Firefox 61.0.2 on https://www.virustotal.com/#/file/9734073d0dc233d0c260b8e40178010c1c2bf58bede57dd81e33f17eacefd6dd/detection It is having a issue with 7zS.sfx as cor-el mentioned if you look in details. VTzilla is a extension for Firefox for the VirusTotal. https://www.virustotal.com/en/documentation/browser-extensions/

Modified by James

Question owner

Pkshadow said

Hi, there will always be false/positives also more chance of a error with that number if scanners. https://www.virustotal.com I will say that if you have something already on your system by installing or updating it is possible to set it loose. When in doubt https://www.malwarebytes.com/

Thank you Pkshadow for your answer.

''Pkshadow [[#answer-1149241|said]]'' <blockquote> Hi, there will always be false/positives also more chance of a error with that number if scanners. https://www.virustotal.com I will say that if you have something already on your system by installing or updating it is possible to set it loose. When in doubt https://www.malwarebytes.com/ </blockquote> Thank you Pkshadow for your answer.

Question owner

cor-el said

7zS.sfx is the 7-ZIP self extractor stub from 7-ZIP that is used by Mozilla to pack the actual Firefox program with the 7-ZIP archive utility. Apparently VTZilla doesn't like this 7-ZIP stub and flags all applications as viruses.

Thank you cor-el, this is a good hypothesis.

''cor-el [[#answer-1149242|said]]'' <blockquote> <b>7zS.sfx</b> is the 7-ZIP self extractor stub from 7-ZIP that is used by Mozilla to pack the actual Firefox program with the 7-ZIP archive utility. Apparently VTZilla doesn't like this 7-ZIP stub and flags all applications as viruses. </blockquote> Thank you cor-el, this is a good hypothesis.

Question owner

James said

A small number of Antivirus like Antiy-AVL, Norton and Cylance has done false positives with Firefox on Windows including on virustotal over the years. Pkshadow said
I will say that if you have something already on your system by installing or updating it is possible to set it loose.

WestEnd said

Not a FF issue but your security program issue. I have no trouble download and installing FF EN from that site.

Not due to any malware on Windows as for example Antiy-AVL is doing a false positive with the French Win64 Firefox 61.0.2 on https://www.virustotal.com/#/file/9734073d0dc233d0c260b8e40178010c1c2bf58bede57dd81e33f17eacefd6dd/detection

It is having a issue with 7zS.sfx as cor-el mentioned if you look in details.

VTzilla is a extension for Firefox for the VirusTotal. https://www.virustotal.com/en/documentation/browser-extensions/

OK Thank you James, I think that the answer is clear now.

Thank you to every body for your help.

''James [[#answer-1149246|said]]'' <blockquote> A small number of Antivirus like Antiy-AVL, Norton and Cylance has done false positives with Firefox on Windows including on virustotal over the years. ''Pkshadow [[#answer-1149241|said]]'' <blockquote> I will say that if you have something already on your system by installing or updating it is possible to set it loose. </blockquote> ''WestEnd [[#answer-1149130|said]]'' <blockquote> Not a FF issue but your security program issue. I have no trouble download and installing FF EN from that site. </blockquote> Not due to any malware on Windows as for example Antiy-AVL is doing a false positive with the French Win64 Firefox 61.0.2 on https://www.virustotal.com/#/file/9734073d0dc233d0c260b8e40178010c1c2bf58bede57dd81e33f17eacefd6dd/detection It is having a issue with 7zS.sfx as cor-el mentioned if you look in details. VTzilla is a extension for Firefox for the VirusTotal. https://www.virustotal.com/en/documentation/browser-extensions/ </blockquote> OK Thank you James, I think that the answer is clear now. Thank you to every body for your help.
grahamperrin 1 solutions 15 answers

cor-el said

7zS.sfx is the 7-ZIP self extractor stub from 7-ZIP that is used by Mozilla to pack the actual Firefox program with the 7-ZIP archive utility. …

Defocusing from Firefox, https://github.com/4ian/GDevelop/issues/88#issuecomment-81366849 (2015-03-16) observed:

7zS.sfx is used to create Windows executable that can extract their own contents in a temporary folder: …

7zS.sfx also featured in Mozilla bug 1468067 - Firefox installer doesn't pass VirusTotal test.

An older bug, unassigned: 1199754 - Let's stop packing Windows installer with UPX.

''cor-el [[#answer-1149242|said]]'' <blockquote> <b>7zS.sfx</b> is the 7-ZIP self extractor stub from 7-ZIP that is used by Mozilla to pack the actual Firefox program with the 7-ZIP archive utility. … </blockquote> Defocusing from Firefox, https://github.com/4ian/GDevelop/issues/88#issuecomment-81366849 (2015-03-16) observed: <blockquote> 7zS.sfx is used to create Windows executable that can extract their own contents in a temporary folder: … </blockquote> 7zS.sfx also featured in Mozilla bug [https://bugzilla.mozilla.org/show_bug.cgi?id=1468067 1468067 - Firefox installer doesn't pass VirusTotal test]. An older bug, unassigned: [https://bugzilla.mozilla.org/show_bug.cgi?id=1199754 1199754 - Let's stop packing Windows installer with UPX].

Modified by grahamperrin