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f_003a56

Start Install

The file f_003a56 by Start Install has been detected as adware by 1 anti-malware scanner with very strong indications that the file is a potential threat. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. The file has been seen being downloaded from free-usb-disk-security.en.softonic.com and multiple other hosts.
Publisher:
Start Install  (signed and verified)

MD5:
ba74761513b0ee1b7c091b3aff5193d2

SHA-1:
09c62e9a23a596a06d4bbf110879db0b93d15aa5

SHA-256:
7a16d05ab6b7350fcd94a1a0802c1de85890055b442dbe65cf0adf4c52b69747

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

Analysis date:
5/1/2024 9:30:08 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.StartIns.Installer (M)
16.5.30.23

File size:
400.8 KB (410,376 bytes)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\google\chrome\user data\default\cache\f_003a56

Digital Signature
Signed by:
Start Install

Authority:
COMODO CA Limited

Valid from:
3/9/2016 1:00:00 AM

Valid to:
3/10/2017 12:59:59 PM

Subject:
CN=Start Install, OU=Installmonetizer, O=Start Install, POBox=95138, STREET=5655 Silver Creek Valley Rd STE 615, L=San Jose, S=CA, PostalCode=95138, C=US

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

Serial number:
008BE840D4C700B3D8AEC7C83C8831208A

File PE Metadata
Compilation timestamp:
12/5/2009 11:52:12 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:vmCpp5EdVplMCB4xrpg+zFSyT01KbJd5A8Y:vlZEdXWCmc+t0MbJd5A8Y

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:
7.8264

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file f_003a56 has been seen being distributed by the following 2 URLs.

http://free-usb-disk-security.en.softonic.com/download-tracker?th=1/6CH9aeXedl4L8u BHNJXWTW LP1LFlnGQpxqjlxAO/UOXmgi3za88T m8hroCom0/.../DZIQJgpDAY0hxXb5h0NWXBKA46MMmJTMVJkMNvDmwePEdi8pF5UHE3jOsWJogEUEsH6zWBjCeenKY4QGO1MMuGO3byzPlrZRQo4=

http://www.avdsoft.com/.../free_usb_disk_security.exe

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