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icreinstall_skype.exe

Web

MICROMAX STUDIO, S.L.

The installer utilizes InstallCore which may bundle about 3-4 offers for various ad-supported toolbars, extensions and utilities. The application icreinstall_skype.exe, “Web Setup ” by MICROMAX STUDIO, S.L 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 installCore installer. The file has been seen being downloaded from www.purepackagesthread.com and multiple other hosts. While running, it connects to the Internet address os.solvefile.com on port 80 using the HTTP protocol.
Publisher:
Installer   (signed by MICROMAX STUDIO, S.L.)

Product:
Web

Description:
Web Setup

Version:
2.5.4.8

MD5:
74cc42a42a72f7451427b1ebce8af189

SHA-1:
d14fb6adcebe6016bdb52363655abf35b6e23420

SHA-256:
53e4b6838d8e4bd4f9696cd2e7d4e58263417acecaa2b3e9c8c1ade8349fa2bf

Scanner detections:
1 / 68

Status:
Potentially unwanted

Explanation:
Utilizes the InstallCore download manager that may bundle various adware-type offers.

Description:
This 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
11/24/2024 1:32:31 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.installCore.MICROMAXSTUDIO.Installer (M)
16.1.18.12

File size:
932.7 KB (955,040 bytes)

Product version:
1.6

Copyright:
Program Software

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\temp\icreinstall_skype.exe

Digital Signature
Signed by:
MICROMAX STUDIO, S.L.

Authority:
GoDaddy.com, Inc.

Valid from:
9/1/2015 11:11:38 AM

Valid to:
9/1/2016 11:11:38 AM

Subject:
CN="MICROMAX STUDIO, S.L.", O="MICROMAX STUDIO, S.L.", L=Madrid, C=ES

Issuer:
CN=Go Daddy Secure Certificate Authority - G2, OU=http://certs.godaddy.com/repository/, O="GoDaddy.com, Inc.", L=Scottsdale, S=Arizona, C=US

Serial number:
79A6DBFB5606456E

File PE Metadata
Compilation timestamp:
6/20/1992 12:22:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:VL1O9CoOR4Tya+B4TPtaXQz2jTwaIFn1kBFSVx6xektY:VR4/O05LTgQz0M/FnbWW

Entry address:
0xA5F8

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, CE, 8A, FF, FF, E8, D5, 9C, FF, FF, E8, 64, 9F, FF, FF, E8, 07, A0, FF, FF, E8, A6, BF, FF, FF, E8, 11, E9, FF, FF, E8, 78, EA, FF, FF, 33, C0, 55, 68, C9, AC, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, 92, AC, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 26, F5, FF, FF, E8, 11, F1, FF, FF, 80, 3D, 34, B2, 40, 00, 00, 74, 0C, E8, 23, F6, FF, FF, 33, C0, E8, C4, 97, FF, FF, 8D, 55, F0, 33, C0, E8, B6, C5, FF, FF, 8B, 55...
 
[+]

Packer / compiler:
Inno Setup v5.x - Installer Maker

Code size:
39.5 KB (40,448 bytes)

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

http://www.purepackagesthread.com/c?x=9OYwmTKIhivUpryAB/NS5Vx gqaJumaD2rKOacku/xw=&c=2IkbBqw9ldWbG1jkDh7CvfVMJ 4bb69Nq07iecOqOKXVNrJxvar0vdnCpc/fPTnxcBnDR5nZe53Hqnsmd/deznduHbR8aZtIEr qWxoZVUMacdf8Ee8DdSWzn4eihEXL5ezNqqSlJ5v6H3I0FAFO2Q==&downloadAs=skype.exe&fallback_url=http://res.charmchorm.com/.../SkypeSetupFull.msi

http://www.purepackagesthread.com/c?x=ojj5E Vs14NLaWIUojGmWnAUgnwjoxVKGKUzlaApM/8=&c=9bndcSMQFfbFT/LBAXTQVxUwmCpy2vBfOUB9la817jGYzj/9tygaXAt6CKvtHmTZJa6n1stj8PWto7miNT ultgdCJ2pCDQP6tCNrRdtGuZ/WxiNdDcYhAjypVKzN6ND48OOvjvxRNN3NhaDV X68A==&downloadAs=skype.exe&fallback_url=http://res.charmchorm.com/.../SkypeSetupFull.msi

The executing file has been seen to make the following network communications in live environments.

TCP (HTTP):
Connects to os.solvefile.com  (207.189.109.121:80)

TCP (HTTP):
Connects to cdnus.solvefile.com  (207.189.109.121:80)

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