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netsurf-gcc-jsoff-1720.exe

The executable netsurf-gcc-jsoff-1720.exe has been detected as malware by 2 anti-virus scanners. The program is a setup application that uses the Nullsoft Install System installer, however the file is not signed with an authenticode signature from a trusted source. The file has been seen being downloaded from ci.netsurf-browser.org.
MD5:
aecc523c3e52507e6efd8eaa1cb4cee9

SHA-1:
6a3e788f203b67271829847f4b81a94a217cabff

SHA-256:
fe1b5d3b1f3223f9c9dc53094ec515582c09ee40a19a7bf0249b6bb322eb5dcb

Scanner detections:
2 / 68

Status:
Malware

Explanation:
This is part of the Crossrider Internet browser extension framework which may modify the user's web browser settings including changing the home and search pages.

Note:
Crossrider is the owner of a platform that enables the creation of cross-browser extensions by developers but is not the owner of this detected application.

Analysis date:
4/27/2024 2:46:59 AM UTC  (today)

Scan engine
Detection
Engine version

Bkav FE
HW32.CDB
1.3.0.4959

Reason Heuristics
Threat.Win.Reputation.IMP
16.12.1.0

File size:
3.4 MB (3,570,221 bytes)

File type:
Executable application (Win32 EXE)

Installer:
Nullsoft Install System

Common path:
C:\users\{user}\downloads\netsurf-gcc-jsoff-1720.exe

File PE Metadata
Compilation timestamp:
1/5/2012 1:21:36 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.22

CTPH (ssdeep):
98304:DkaGMdRxAeSzIldIjSp9N2hS/zy9mCOqVIoHTJ7rousT4IgJFa:DkahdRxAeSGWQ0c/zy92qZtHNsO7a

Entry address:
0x4131

Entry point:
55, 89, E5, 57, 56, 53, 81, EC, AC, 01, 00, 00, FF, 15, 74, 43, 43, 00, C7, 04, 24, 01, 80, 00, 00, FF, 15, 58, 44, 43, 00, 53, C7, 04, 24, 00, 00, 00, 00, FF, 15, 98, 44, 43, 00, 56, A3, F4, 27, 43, 00, C7, 04, 24, 08, 00, 00, 00, E8, 8B, 3B, 00, 00, A3, 50, 28, 43, 00, 8D, 85, 84, FE, FF, FF, 57, C7, 44, 24, 10, 00, 00, 00, 00, C7, 44, 24, 0C, 60, 01, 00, 00, 89, 44, 24, 08, C7, 44, 24, 04, 00, 00, 00, 00, C7, 04, 24, A9, B2, 40, 00, FF, 15, AC, 44, 43, 00, 83, EC, 14, C7, 44, 24, 04, AA, B2, 40, 00, C7...
 
[+]

Entropy:
7.9942  (probably packed)

Code size:
33.5 KB (34,304 bytes)

The file netsurf-gcc-jsoff-1720.exe has been seen being distributed by the following URL.

http://ci.netsurf-browser.org/builds/.../NetSurf-gcc-jsoff-1720.exe

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