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nasm-2.11.02-installer.exe

The executable nasm-2.11.02-installer.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 www.nasm.us.
MD5:
544328dbd9184fe6848dbf8be585ce0f

SHA-1:
4e118a06a5ae415497e9e139dae9509f4ce77050

SHA-256:
348185b74fb6076f4f3ed41c7cb86b06598d0c4216fc0d98d34e55a6e901a164

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:
5/10/2024 6:14:28 PM UTC  (today)

Scan engine
Detection
Engine version

Bkav FE
HW32.CDB
1.3.0.4959

Reason Heuristics
Threat.Win.Reputation.IMP
16.11.29.20

File size:
762.2 KB (780,516 bytes)

File type:
Executable application (Win32 EXE)

Installer:
Nullsoft Install System

Common path:
C:\users\{user}\downloads\nasm-2.11.02-installer.exe

File PE Metadata
Compilation timestamp:
2/16/2013 11:56:33 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.23

CTPH (ssdeep):
12288:2zls6Gx5/agcYRAZe49FPWTI8Jaa6BrZqmxnfBUIBqAeKi3takcXlU5h:2zls66lYY6b9FPWRaaqFqmxnfeDAeK2d

Entry address:
0x4105

Entry point:
55, 89, E5, 57, 56, 53, 81, EC, 9C, 01, 00, 00, FF, 15, 74, A3, 42, 00, C7, 04, 24, 01, 80, 00, 00, FF, 15, 58, A4, 42, 00, 53, C7, 04, 24, 00, 00, 00, 00, FF, 15, 98, A4, 42, 00, 56, C7, 04, 24, 08, 00, 00, 00, A3, 30, 8B, 42, 00, E8, 5B, 3C, 00, 00, A3, 8C, 8B, 42, 00, 8D, 85, 88, 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, A4, 42, 00, 83, EC, 14, C7, 44, 24, 04, AA, B2, 40, 00, C7...
 
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Code size:
34 KB (34,816 bytes)

The file nasm-2.11.02-installer.exe has been seen being distributed by the following URL.

http://www.nasm.us/pub/nasm/releasebuilds/2.11.02/.../nasm-2.11.02-installer.exe

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