mofs.exe

CoolMirage Ltd.

This is the setup program for CoolMirage, a potentially unwanted program (PUP) that display ads on the computer. The application mofs.exe by CoolMirage 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. 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.
Publisher:
CoolMirage Ltd.  (signed and verified)

MD5:
caa7f297739cbc92306a11dcda8acfd8

SHA-1:
65cef9823ba5f7dc8684bbd8a2580a5ae41a87a4

SHA-256:
00e376dd8a7fdf3980067a8eeee6fa33825a9e06c04fa3ed4457f5adaf01ee20

Scanner detections:
1 / 68

Status:
Adware

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

Analysis date:
4/22/2025 8:29:37 PM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.CoolMirage.Installer (M)
16.6.29.10

File size:
360.3 KB (368,896 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

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

Digital Signature
Signed by:

Authority:
Thawte, Inc.

Valid from:
6/6/2013 2:00:00 AM

Valid to:
6/7/2014 1:59:59 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:
12/5/2009 11:50:46 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:Esk7cDXQd2lABukyUuVmKWDDOlNQUX/7B+mt/yOHzXLRBcUj:wGX5lHkluSgyUXD1/yOTXLRBT

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 mofs.exe has been seen being distributed by the following URL.

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