improvespeedpc.exe

Pinery Limited

The application improvespeedpc.exe by Pinery Limited has been detected as a potentially unwanted program by 8 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 improvespeedpc.s3.amazonaws.com.
Publisher:
Pinery Limited  (signed and verified)

MD5:
8152c3522b2032b2b2abd1ead5edc3c4

SHA-1:
e0a2479371a90ec12ab73f22be0230dbe64b3dae

SHA-256:
1ea126e61d1e6cfe2b0e5c98958b1d5bffb8ae889778e664760672c6434c63ca

Scanner detections:
8 / 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:
5/20/2018 11:35:12 AM UTC  (today)

Scan engine
Detection
Engine version

Bkav FE
W32.Clod89a.Trojan
1.3.0.4261

Dr.Web
Adware.Downware.1417
9.0.1.0164

ESET NOD32
Win32/Bundled.Toolbar.Ask (variant)
8.9007

Kingsoft AntiVirus
Win32.Troj.Generic.a.(kcloud)
331020.49267

Malwarebytes
PUP.Optional.Spigot.A
v2014.06.13.07

McAfee
Artemis!8152C3522B20
5600.7101

McAfee Web Gateway
Artemis!8152C3522B20
7.7101

Trend Micro House Call
TROJ_GEN.F47V1010
7.2.164

File size:
3.2 MB (3,383,024 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 7:00:00 PM

Valid to:
9/30/2015 6:59:59 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 4:50:41 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
98304:UIxW8m7X/iaezOykG7MeGMdetwW24zXQD:UI4f7PfeCykcEtz2OXQD

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 URL.

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