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illoxum_jk.exe

illoxum

This is the installer/setup program for a Yontoo adware component, a web browser plugin that injects unwanted ads in the browser. The application illoxum_jk.exe by illoxum 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. It is also typically executed from the user's temporary directory.
Publisher:
illoxum  (signed and verified)

MD5:
b0f49d5143523ec4c4bd61e68aa596ad

SHA-1:
a1e7af0c5fcc59227c0db4e820cd7a9e70eb1669

SHA-256:
ad28916bdc91169fbd683e293257267b8d5cd1d8f4b21b4584f76177918bca1d

Scanner detections:
1 / 68

Status:
Adware

Explanation:
Belongs to the Sambreel/Yontoo progam that inserts various forms of advertising in the user's web browser, installed with minimal or no user consent.

Analysis date:
4/16/2024 7:01:09 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Yontoo.illoxum.Installer (M)
15.12.14.21

File size:
198.1 KB (202,832 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\temp\illoxum_jk.exe

Digital Signature
Signed by:
illoxum

Authority:
VeriSign, Inc.

Valid from:
8/20/2013 8:00:00 PM

Valid to:
8/20/2015 7:59:59 PM

Subject:
CN=illoxum, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=illoxum, L=San Diego, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2010 CA, OU=Terms of use at https://www.verisign.com/rpa (c)10, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
20A254C9F30D2A8E669A8E5FBB2F4EB6

File PE Metadata
Compilation timestamp:
12/5/2009 5:50:41 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
3072:/Lk395hYXJsCjkxUF3nzAXEH/xUiAKQ89anH7l1m/GqMHJGULvL:/QqDoxizAXMUYYnH7nm/G/Hc6

Entry address:
0x30CB

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, 38, 3F, 42, 00, E8, F1, 2B, 00, 00, A3, 84, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 30, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 80, 36, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.8959

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

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