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lt_instmon.exe

Local Temperature

Core Systems

Part of an adware web browser extension that delivers advertisements such as coupons, price-comparisons, display media, affiliate links, banners, popups/popunders and other links. The application lt_instmon.exe by Core Systems has been detected as adware by 3 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from d14vy52t6pvsik.cloudfront.net.
Publisher:
Local Temperature LLC  (signed by Core Systems)

Product:
Local Temperature

Version:
1.0.0.3

MD5:
95d7536cc2b8497ecf52dfbded43bdec

SHA-1:
d1cc70cd8f6aea0becc4a27964e44ae4bfc894b1

SHA-256:
4111999c22faa178e84ddcdbe3a59b6c7ca52f89e145c4828decb915630e6013

Scanner detections:
3 / 68

Status:
Adware

Analysis date:
12/24/2024 1:48:18 AM UTC  (today)

Scan engine
Detection
Engine version

Malwarebytes
PUP.Optional.LocalTemperature.C
v2015.04.22.12

Reason Heuristics
PUP.Weather.Installer
15.5.14.18

VIPRE Antivirus
Threat.5085375
39354

File size:
910 KB (931,808 bytes)

Copyright:
Local Temperature LLC © 2015. All Rights Reserved.

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\lt_instmon.exe

Digital Signature
Signed by:
Core Systems

Authority:
GoDaddy.com, Inc.

Valid from:
6/17/2014 1:26:02 PM

Valid to:
6/17/2015 1:26:02 PM

Subject:
CN=Core Systems, O=Core Systems, L=Austin, S=Texas, C=US

Issuer:
CN=Go Daddy Secure Certificate Authority - G2, OU=http://certs.godaddy.com/repository/, O="GoDaddy.com, Inc.", L=Scottsdale, S=Arizona, C=US

Serial number:
4B1F1B2C0AF57F

File PE Metadata
Compilation timestamp:
12/5/2009 2:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
24576:Hlad6hz2n2dH/bm8Yi6U7FQPxdY/nWTcM:i6hz22dHiv3E6535

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:
7.9805

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file lt_instmon.exe has been seen being distributed by the following URL.

https://d14vy52t6pvsik.cloudfront.net/lt_instmon.exe

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