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justbackup.exe

Online Storage Software Limited

The executable justbackup.exe has been detected as malware by 1 anti-virus scanner. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer.
Publisher:
Online Storage Software Limited  (signed and verified)

MD5:
c8c81b5632595db51ee4c6b7e6c23c95

SHA-1:
53a47b8f637fa26b1ce236696af9a58071c8319b

SHA-256:
f80444015ab87f88cf7aa4c45e2f58ee418e565ccd48b06e4d741d368a44b0c6

Scanner detections:
1 / 68

Status:
Malware

Analysis date:
8/13/2025 10:48:18 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP (M)
16.11.1.12

File size:
298.2 KB (305,320 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

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

Digital Signature
Signed by:
Online Storage Software Limited

Authority:
DigiCert Inc

Valid from:
4/6/2015 8:00:00 PM

Valid to:
4/11/2018 8:00:00 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 5:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:6e349UaD6rMJDDos3+GlwpL8+/PDMo4j+3CvWwsuIKLV3pnUY:iUaD6rM17OGC5D/PDTivl/L

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, EC, 42, 00, E8, F1, 2B, 00, 00, A3, 64, EB, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 8F, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, E3, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 40, 43, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.7950

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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