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download_file.exe

CoolMirage Ltd.

This is the setup program for CoolMirage, a potentially unwanted program (PUP) that display ads on the computer. The application download_file.exe by CoolMirage has been detected as adware by 8 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer. The setup installer will bundle multiple adware offers during download and setup (based on the user's geographical location) including toolbars, extensions and coupon utilities. The file has been seen being downloaded from smarterzdownloadercom4.maynemyltf.netdna-cdn.com.
Publisher:
CoolMirage Ltd.  (signed and verified)

MD5:
29b2d6172b0e12b7935284294fdc3333

SHA-1:
2b07ef44e16dea62e0894175a02f0b5fc9e309b2

SHA-256:
d789e387761ee8579b4eefec2cd3fbb6d9e0223075ca4e2f9bdd6b4b5e047773

Scanner detections:
8 / 68

Status:
Adware

Explanation:
Bundles a number of adware programs in the installer.

Analysis date:
4/20/2024 1:37:26 AM UTC  (today)

Scan engine
Detection
Engine version

Dr.Web
Adware.Downware.1263
9.0.1.0276

Malwarebytes
PUP.Optional.OneClickDownloader.A
v2015.10.03.11

Microsoft Security Essentials
SoftwareBundler:Win32/OneClickDownloader
1.163.1557.3

Reason Heuristics
PUP.CoolMirage.Installer (M)
15.10.3.11

Sophos
CoolMirage
4.94

SUPERAntiSpyware
PUP.OneClickDownloader/Variant
9592

Trend Micro House Call
TROJ_GEN.F47V0929
7.2.276

VIPRE Antivirus
News.net
22872

File size:
297.7 KB (304,816 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

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

Digital Signature
Signed by:
CoolMirage Ltd.

Authority:
Thawte, Inc.

Valid from:
6/6/2013 3:00:00 AM

Valid to:
6/7/2014 2:59:59 AM

Subject:
CN=CoolMirage Ltd., O=CoolMirage Ltd., L=Tel Aviv, S=Israel, C=IL

Issuer:
CN=Thawte Code Signing CA - G2, O="Thawte, Inc.", C=US

Serial number:
110F603E63C86349A5F243EA06966F33

File PE Metadata
Compilation timestamp:
12/6/2009 12:50:46 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:1sH7cbdMiTptkCLVW6kKTcUcDTlTykH4O00lCWXlaOm:IadMiVaK06gT/4h0lPVa1

Entry address:
0x323C

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 30, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B4, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 58, 3F, 42, 00, E8, 09, 2C, 00, 00, A3, A4, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 58, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, B8, 91, 40, 00, 68, A0, 36, 42, 00, E8, BC, 28, 00, 00, FF, 15, B0, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, AA, 28, 00, 00...
 
[+]

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file download_file.exe has been seen being distributed by the following URL.

http://smarterzdownloadercom4.maynemyltf.netdna-cdn.com/builds/http/.../download_file.exe

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