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kobosetup.exe

Rakuten Kobo Inc.

The application kobosetup.exe by Rakuten Kobo has been detected as a potentially unwanted program 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 download.kobobooks.com and multiple other hosts.
Publisher:
Rakuten Kobo Inc.  (signed and verified)

MD5:
0d1bed086a4a0e868469bea89253b244

SHA-1:
a1e19078640c4e605b47ce840eb0ab1cda467698

SHA-256:
ad16acbbf78b13930d13651a0ee32910034a85e824b5b1de9312920175bdd198

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
4/26/2024 12:01:51 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware.Linkury
16.3.30.18

File size:
57.4 MB (60,185,352 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

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

Digital Signature
Signed by:
Rakuten Kobo Inc.

Authority:
Symantec Corporation

Valid from:
5/4/2015 1:00:00 AM

Valid to:
5/4/2018 12:59:59 AM

Subject:
CN=Rakuten Kobo Inc., O=Rakuten Kobo Inc., L=Toronto, S=Ontario, C=CA

Issuer:
CN=Symantec Class 3 SHA256 Code Signing CA, OU=Symantec Trust Network, O=Symantec Corporation, C=US

Serial number:
5A7592CDE314E3475CFDA766135B5D4F

File PE Metadata
Compilation timestamp:
12/9/2014 5:35:13 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
11.0

CTPH (ssdeep):
1572864:c+DmPxwOzYosAkmlIZOoJ8TgVj3bERLD0wNy4lYbwzw:DsB/sAkmlOOoyTgtCLDI4lYbws

Entry address:
0x3459

Entry point:
81, EC, CC, 02, 00, 00, 53, 55, 56, 57, 6A, 20, 33, DB, 5E, 89, 5C, 24, 10, BF, D8, 84, 40, 00, 8B, EB, FF, 15, 30, 80, 40, 00, 68, 01, 80, 00, 00, FF, 15, A8, 80, 40, 00, 53, FF, 15, AC, 82, 40, 00, 6A, 09, A3, 40, 4A, 43, 00, E8, 90, 2C, 00, 00, 53, 68, B4, 02, 00, 00, A3, D0, 39, 43, 00, 8D, 44, 24, 30, 50, 53, 68, 60, 85, 40, 00, FF, 15, 78, 81, 40, 00, 68, 64, 85, 40, 00, 68, E0, 39, 43, 00, E8, 58, 2E, 00, 00, FF, 15, 9C, 80, 40, 00, 50, 68, 00, F0, 43, 00, E8, 47, 2E, 00, 00, 53, FF, 15, B8, 80, 40...
 
[+]

Entropy:
7.9996

Packer / compiler:
Nullsoft install system v2.x

Code size:
26 KB (26,624 bytes)

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

https://download.kobobooks.com/desktop/.../kobosetup.exe

https://kbdownload1-a.akamaihd.net/desktop/.../kobosetup.exe

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