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blocknsurfchecker.exe

The application blocknsurfchecker.exe has been detected as a potentially unwanted program by 3 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer, however the file is not signed with an authenticode signature from a trusted source.
MD5:
6a7f01e83d50aa5bad16dee71226af3b

SHA-1:
8294f5b448b4fe27c9bdb210b4e631c67c6452e9

SHA-256:
6490445592bd2e8d41e82ad37c1dfa53a4638014a1b5d56e5cbfd111114a87e5

Scanner detections:
3 / 68

Status:
Potentially unwanted

Analysis date:
12/26/2024 11:19:13 AM UTC  (today)

Scan engine
Detection
Engine version

AVG
AdInstaller
2016.0.3183

Clam AntiVirus
Win.Adware.Agent-7643
0.98/21411

Reason Heuristics
Adware.Bundler (M)
16.6.16.19

File size:
51 KB (52,228 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\blocknsurfchecker.exe

File PE Metadata
Compilation timestamp:
12/5/2009 4:52:12 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
1536:3fYBrbzmFizYwUK1G0DRXJt0GZy1ntfak:vY4FizYxCDRXJtqpX

Entry address:
0x30FA

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 18, 1C, 45, 00, E8, F1, 2B, 00, 00, A3, 64, 1B, 45, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 37, 43, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, DB, 44, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, A0, 47, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.1193

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file blocknsurfchecker.exe has been seen being distributed by the following URL.

ftp://apppingzone.com/.../BlockNSurfChecker.exe

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