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upgrade.exe

QuestBrowse.com

The application upgrade.exe by QuestBrowse.com 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.
Publisher:
QuestBrowse.com  (signed and verified)

MD5:
323ff7b4a4b746ac1ca6debb17ed67f8

SHA-1:
f38f7494f508cc48c8ae7624c42cbe6ca8e0c06b

SHA-256:
0b505b2e8cf970571150d48c1365bcda6338f5e6c3aec42ba0fe25829dc7db4a

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:
4/19/2024 5:16:37 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.QuestBrowse.Installer (M)
15.12.28.2

File size:
655.4 KB (671,080 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\windows\temp\{random}.tmp\upgrade.exe

Digital Signature
Signed by:
QuestBrowse.com

Authority:
The USERTRUST Network

Valid from:
7/6/2010 7:00:00 PM

Valid to:
7/6/2012 6:59:59 PM

Subject:
CN=QuestBrowse.com, O=QuestBrowse.com, STREET=2141 Rosecrans Ave, STREET=Suite 2020, L=El Segundo, S=CA, PostalCode=90245, C=US

Issuer:
CN=UTN-USERFirst-Object, OU=http://www.usertrust.com, O=The USERTRUST Network, L=Salt Lake City, S=UT, C=US

Serial number:
00E4373D3806C6A390387CD443CAFF15A0

File PE Metadata
Compilation timestamp:
2/17/2007 6:48:44 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:0LHsq2yg18jA311F8zQPrO3fq1eAGyl6MKSivRIPeLiUsFyp:0L+18E3TF8+rOvq1ZGy4MKoUnp

Entry address:
0x32CE

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 14, 70, 91, 40, 00, 33, F6, C6, 44, 24, 10, 20, FF, 15, 30, 70, 40, 00, 53, FF, 15, 74, 72, 40, 00, A3, 10, 48, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 20, FD, 41, 00, FF, 15, 5C, 71, 40, 00, 68, 94, 92, 40, 00, 68, 60, 3F, 42, 00, E8, 49, 28, 00, 00, FF, 15, B8, 70, 40, 00, BF, 00, A0, 42, 00, 50, 57, E8, 37, 28, 00, 00, 53, FF, 15, 0C, 71, 40, 00, 80, 3D, 00, A0, 42, 00, 22, A3, 60, 47, 42, 00, 8B, C7, 75, 0A...
 
[+]

Entropy:
7.9839

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

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