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Nfswinterlake1.exe

Gekkon Ltd

The application Nfswinterlake1.exe by Gekkon has been detected as a potentially unwanted program by 8 anti-malware scanners. The program is a setup application that uses the Inno Setup installer. The setup program uses the InstallCore engine which may bundle additional software offers including toolbars and browser extensions. The file has been seen being downloaded from newfreescreensavers.com.
Publisher:
Gekkon Ltd  (signed and verified)

MD5:
bbb49775961cd7e94a1d430a15da2054

SHA-1:
ad9e0d1e6b79b967fa4bf53980ea67a66b9cb2fa

SHA-256:
b432dbec3833631fee765ed00cc66ae1966f64394eae686854e16c93f805b766

Scanner detections:
8 / 68

Status:
Potentially unwanted

Explanation:
Uses the InstallCore download manager to install additional potentially unwanted software which may include extensions such as DealPly and various toolbars.

Analysis date:
11/5/2024 7:25:41 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.InstallCore
7.1.1

Comodo Security
Application.Win32.InstallCore.BWAN
18084

Dr.Web
Trojan.Packed.24524
9.0.1.0101

ESET NOD32
Win32/InstallCore.BC (variant)
8.9665

K7 AntiVirus
Unwanted-Program
13.176.11721

Malwarebytes
PUP.Optional.InstallCore.A
v2014.04.11.08

Reason Heuristics
PUP.Gekkon.O
14.7.10.2

VIPRE Antivirus
InstallCore.b
28194

File size:
717.4 KB (734,576 bytes)

File type:
Executable application (Win32 EXE)

Installer:
Inno Setup

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\nfswinterlake1.exe

Digital Signature
Signed by:
Gekkon Ltd

Authority:
GlobalSign nv-sa

Valid from:
5/13/2013 10:57:19 AM

Valid to:
8/13/2016 10:57:19 AM

Subject:
E=is@newfreescreensavers.com, CN=Gekkon Ltd, O=Gekkon Ltd, L=Mahe, S=Seychelles, C=SC

Issuer:
CN=GlobalSign CodeSigning CA - G2, O=GlobalSign nv-sa, C=BE

Serial number:
11219BA4649A3898A4F37C1CE7782C46FAEA

File PE Metadata
Compilation timestamp:
6/19/1992 6:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:xQFaPRjtbxh7FzQ52W9l4SB9JppABXB66EKbIeZyhkcGCd1nsvn95AK6z3XNP3uL:xQFsNtlhFzgP9aSB9xUgX+GhrGCd1svF

Entry address:
0x9C40

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, 86, 94, FF, FF, E8, 8D, A6, FF, FF, E8, 1C, A9, FF, FF, E8, BF, A9, FF, FF, E8, 5E, C9, FF, FF, E8, C9, F2, FF, FF, E8, 30, F4, FF, FF, 33, C0, 55, 68, FC, A2, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, C5, A2, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 96, FE, FF, FF, E8, C9, FA, FF, FF, 8D, 55, F0, 33, C0, E8, 83, CF, FF, FF, 8B, 55, F0, B8, 24, CE, 40, 00, E8, 32, 95, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, 24, CE...
 
[+]

Entropy:
7.7613

Packer / compiler:
Inno Setup v5.x - Installer Maker

Code size:
37 KB (37,888 bytes)

The file Nfswinterlake1.exe has been seen being distributed by the following URL.

http://newfreescreensavers.com/download/.../nfswinterlake1

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