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instsf450_inst.exe

Well Known Media Ltd

The application instsf450_inst.exe by Well Known Media has been detected as a potentially unwanted program by 10 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.
Publisher:
Well Known Media Ltd  (signed and verified)

MD5:
1e189283fda2a8ea9eadcbe48145419b

SHA-1:
16ccffd1044eebceb1abf63f0cb4e28311b3d283

SHA-256:
8f72f426f94c1ab36c15b19e69a9b7244772fc545d17754a10b2e84ead64b39d

Scanner detections:
10 / 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:
4/19/2024 12:12:08 PM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
ADWARE/InstallCore.Gen9
7.11.182.172

AVG
Generic
2015.0.3304

Dr.Web
Trojan.Packed.28583
9.0.1.0304

ESET NOD32
Win32/InstallCore.QL potentially unwanted application
8.7.0.302.0

F-Prot
W32/InstallCore.AC.gen
v6.4.7.1.166

K7 AntiVirus
Trojan
13.183.13584

Reason Heuristics
PUP.WellKnownMedia.O
14.10.31.21

Sophos
Install Core Click run software
4.98

Vba32 AntiVirus
Malware-Cryptor.InstallCore.gen
3.12.26.3

VIPRE Antivirus
Threat.4786018
33624

File size:
750 KB (768,024 bytes)

File type:
Executable application (Win32 EXE)

Installer:
Inno Setup

Language:
Language Neutral

Common path:
C:\users\{user}\downloads\instsf450_inst.exe

Digital Signature
Signed by:
Well Known Media Ltd

Authority:
COMODO CA Limited

Valid from:
8/20/2014 10:00:00 AM

Valid to:
8/21/2015 9:59:59 AM

Subject:
CN=Well Known Media Ltd, O=Well Known Media Ltd, STREET=Kissack Court, STREET=29 Parliament Street, L=Ramsey, S=Isle of Man, PostalCode=IM8 1JA, C=IM

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
73CC925BC7B1EAFC96D9C9F2EAA55030

File PE Metadata
Compilation timestamp:
6/20/1992 8:22:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:xSvp+sblL83V7+asRzoWkPpMVgEPVqlU7+G4nqh1GaR1pPDpK085+lC3rwCSUpbq:xSvosb5as4RMVHdqlU73LRh585S+NJq

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, 53, C9, FF, FF, E8, 9A, 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:
7.8102

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

Code size:
37 KB (37,888 bytes)

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