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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 6 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. The file has been seen being downloaded from d14vy52t6pvsik.cloudfront.net.
Publisher:
Local Temperature LLC  (signed by Core Systems)

Product:
Local Temperature

Version:
1.0.0.2

MD5:
d42ef6e7b297c91ae17ac470f0adabb5

SHA-1:
390e1aa3dde23b9d95afbf5668774cc5e7386dae

SHA-256:
641a8f6902798d1a153d343b8dbca1abb8605048df0d45b34b0725fe9eba35ce

Scanner detections:
6 / 68

Status:
Adware

Analysis date:
12/24/2024 2:07:09 AM UTC  (today)

Scan engine
Detection
Engine version

herdProtect (fuzzy)
variant of lt_tg.exe (Adware)
2015.7.13.11

Malwarebytes
PUP.Optional.LocalTemperature.C
v2015.04.10.08

Reason Heuristics
PUP.Weather.Installer
15.5.14.18

Trend Micro House Call
Suspici.F994BFB8
7.2.100

Vba32 AntiVirus
suspected of Trojan.Downloader.gen.h
3.12.26.3

VIPRE Antivirus
Threat.5085375
38552

File size:
894.7 KB (916,176 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\inetcache\content.ie5\twi53huy\lt_instmon.exe

Digital Signature
Signed by:
Core Systems

Authority:
GoDaddy.com, Inc.

Valid from:
6/17/2014 3:26:02 PM

Valid to:
6/17/2015 3:26:02 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 4:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
24576:9WISJQWan2dH/bmDjQjzkUkdXqT2RqqfMpzX0gTwsyc3:PSah2dHiXIzkJdXqT4MpzXNwsv

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:
7.9797

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

Remove lt_instmon.exe - Powered by Reason Core Security
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