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apnstub.exe

AskStub Application

Ask.com

This installer is part of the Ask.com (APN) network which will install the Ask.com branded toolbar or browser extension which will take control of the web browser's search functions. The application apnstub.exe by Ask.com 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 APN Stub installer. It is also typically executed from the user's temporary directory.
Publisher:
Ask.com  (signed and verified)

Product:
AskStub Application

Version:
4.0.0.0

MD5:
f80efa40e475c415fbebb0863a8507f1

SHA-1:
e96ad99a8f2012d3b6d85a0f2c7e2dc350fbcf46

SHA-256:
79217b69a29fd63fbda01319e28ba0cb78f937d1b9973397c7cdd0e0b5cf28ba

Scanner detections:
1 / 68

Status:
Potentially unwanted

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:
11/2/2024 7:30:00 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Ask (M)
17.3.11.21

File size:
216.3 KB (221,519 bytes)

Product version:
4.0.0.0

Copyright:
Copyright (C) Ask 2010

Original file name:
AskStub.exe

File type:
Executable application (Win32 EXE)

Installer:
APN Stub

Language:
English (United States)

Common path:
C:\users\{user}\appdata\local\temp\{random}.tmp\apnstub.exe

Digital Signature
Signed by:
Ask.com

Authority:
VeriSign, Inc.

Valid from:
6/17/2008 6:00:00 AM

Valid to:
6/18/2011 5:59:59 AM

Subject:
CN=Ask.com, OU=Distribution, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Ask.com, L=Oakland, S=California, C=US

Issuer:
CN=VeriSign Class 3 Code Signing 2004 CA, OU=Terms of use at https://www.verisign.com/rpa (c)04, OU=VeriSign Trust Network, O="VeriSign, Inc.", C=US

Serial number:
286F8A30E2EAC6965B936F826A05305D

File PE Metadata
Compilation timestamp:
5/4/2011 2:01:24 AM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

Entry address:
0x4448

Entry point:
E9, 8E, 95, 00, 00, E9, 79, FE, FF, FF, 8B, FF, 55, 8B, EC, 81, EC, 28, 03, 00, 00, A3, 08, B4, 41, 00, 89, 0D, 04, B4, 41, 00, 89, 15, 00, B4, 41, 00, 89, 1D, FC, B3, 41, 00, 89, 35, F8, B3, 41, 00, 89, 3D, F4, B3, 41, 00, 66, 8C, 15, 20, B4, 41, 00, 66, 8C, 0D, 14, B4, 41, 00, 66, 8C, 1D, F0, B3, 41, 00, 66, 8C, 05, EC, B3, 41, 00, 66, 8C, 25, E8, B3, 41, 00, 66, 8C, 2D, E4, B3, 41, 00, 9C, 8F, 05, 18, B4, 41, 00, 8B, 45, 00, A3, 0C, B4, 41, 00, 8B, 45, 04, A3, 10, B4, 41, 00, 8D, 45, 08, A3, 1C, B4, 41...
 
[+]

Entropy:
7.1585

Packer / compiler:
Xtreme-Protector v1.05

Code size:
74 KB (75,776 bytes)

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