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main_installer.exe

Online Storage Software Limited

The application main_installer.exe by Online Storage Software Limited has been detected as a potentially unwanted program by 4 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer.
Publisher:
Online Storage Software Limited  (signed and verified)

MD5:
6a20b94f507ea0e0bc20edb646d88d6e

SHA-1:
5cce6d114231e9c36e31c3092d68dc5bdb0eb68b

SHA-256:
250f257ba49bd13be5d4337ebd9570492a2fe0edb828a0ec2694956f98028a57

Scanner detections:
4 / 68

Status:
Potentially unwanted

Analysis date:
8/13/2025 10:46:29 PM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
TR/MyPCBackup.297720
3.6.1.96

avast!
Win32:Malware-gen
2014.9-150413

Baidu Antivirus
PUA.MSIL.MyPCBackup
4.0.3.15413

ESET NOD32
MSIL/MyPCBackup.D potentially unwanted
9.11453

File size:
290.7 KB (297,720 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\main_installer.exe

Digital Signature
Signed by:
Online Storage Software Limited

Authority:
DigiCert Inc

Valid from:
4/6/2015 7:00:00 PM

Valid to:
4/11/2018 7:00:00 AM

Subject:
CN=Online Storage Software Limited, O=Online Storage Software Limited, L=Fareham, S=Hampshire, C=GB

Issuer:
CN=DigiCert SHA2 Assured ID Code Signing CA, OU=www.digicert.com, O=DigiCert Inc, C=US

Serial number:
0F808C984A81D60F218F3424868B79A2

File PE Metadata
Compilation timestamp:
12/5/2009 4:53:18 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:tTq+kUaD6rMs4X8aRHh+1c1T/3GSHlxAhoP9zDJvjDag:teUaD6rMaaRHAmT/3GEvAwdu

Entry address:
0x36A0

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 88, A7, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 80, 40, 00, 68, 01, 80, 00, 00, FF, 15, B4, 80, 40, 00, 53, FF, 15, 88, 82, 40, 00, 6A, 08, A3, B8, 63, 42, 00, E8, EE, 2E, 00, 00, A3, 04, 63, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, B0, 0C, 42, 00, FF, 15, 58, 81, 40, 00, 68, 10, A8, 40, 00, 68, 00, 5B, 42, 00, E8, F4, 29, 00, 00, FF, 15, B0, 80, 40, 00, BF, 00, C0, 42, 00, 50, 57, E8, E2, 29, 00, 00...
 
[+]

Entropy:
7.8381

Packer / compiler:
Nullsoft install system v2.x

Code size:
24.5 KB (25,088 bytes)

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