improvespeedpc.exe

Pinery Limited

The application improvespeedpc.exe by Pinery Limited has been detected as a potentially unwanted program by 7 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. This version of the installer will bundle the Ask.com Toolbar, a potentially unwanted web browser extension. The file has been seen being downloaded from www.open-your-files.com and multiple other hosts.
Publisher:
Pinery Limited  (signed and verified)

MD5:
dfea25ba6ed5fe3a8fc03c0f3e155bd7

SHA-1:
38d4f3ac7f987733f44b726aebc59cc1e8c16b89

SHA-256:
0ac8466c847f584a630985a9f5468a5253bb921e81f9824ae76d41c4c7b1d4ad

Scanner detections:
7 / 68

Status:
Potentially unwanted

Explanation:
Bundles that Ask.com toolbar as a third-party offer, a web browser extension that may modify a user's search and home pages.

Analysis date:
6/24/2018 12:45:30 AM UTC  (today)

Scan engine
Detection
Engine version

Baidu Antivirus
PUA.Win32.AskToolbar
4.0.3.15220

Dr.Web
Adware.Downware.1417
9.0.1.051

ESET NOD32
Win32/Bundled.Toolbar.Ask.D potentially unsafe (variant)
9.11197

McAfee
Artemis!DFEA25BA6ED5
5600.6848

McAfee Web Gateway
Artemis
7.6848

NANO AntiVirus
Trojan.Win32.Downware.csnyid
0.30.0.126

Trend Micro House Call
Suspicious_GEN.F47V0127
7.2.51

File size:
3.2 MB (3,373,544 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\downloads\improvespeedpc.exe

Digital Signature
Signed by:

Authority:
VeriSign, Inc.

Valid from:
9/29/2013 8:00:00 PM

Valid to:
9/30/2015 7:59:59 PM

Subject:
CN=Pinery Limited, OU=Digital ID Class 3 - Microsoft Software Validation v2, O=Pinery Limited, L=Hong Kong, S=Hong Kong, C=HK

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:
6DD6E53DC8A2D168995764FA8A7FB997

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):
49152:SFFyHnxv8QrgPUWdX5aZ9IA2r3CzO/6kGE6rMjiVGP0VuwmjZ0lNmaVW24bxftXj:qIR0+WfAaezOykG7MeGMdetwW24zXQ0

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:
7.9951

Packer / compiler:
Nullsoft install system v2.x

Code size:
22.5 KB (23,040 bytes)

The file improvespeedpc.exe has been seen being distributed by the following 2 URLs.

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