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icreinstall_skypeupdatesetup.exe

KawagaSoft

The installer utilizes InstallCore which may bundle about 3-4 offers for various ad-supported toolbars, extensions and utilities. The application icreinstall_skypeupdatesetup.exe by KawagaSoft has been detected as adware by 13 anti-malware scanners. The program is a setup application that uses the installCore installer. The setup program uses the InstallCore engine which may bundle additional software offers including toolbars and browser extensions. It is also typically executed from the user's temporary directory. While running, it connects to the Internet address os.solvefile.com on port 80 using the HTTP protocol.
Publisher:
KawagaSoft  (signed and verified)

MD5:
2fe9e5ae79d48dd8c5f6ff5e453c1fbf

SHA-1:
c2bfbe6888c3c1e2efd4cc41a8d88779d8d02f4a

SHA-256:
d7562c7226f3118e9693f555ba4a7cb55ae64abfe0413ee03a9c67d13b905924

Scanner detections:
13 / 68

Status:
Adware

Explanation:
Uses the InstallCore download manager to install additional potentially unwanted software which may include extensions such as DealPly and various toolbars.

Description:
This is an installer which may bundle legitimate applications with offers for additional 3rd-party applications that may be unwanted by the user. While the installer contains an 'opt-out' feature this is not set be defult and is usually overlooked.

Analysis date:
5/6/2024 4:10:38 AM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.InstallCore
7.1.1

AVG
Generic
2015.0.3457

Dr.Web
Trojan.Packed.25266
9.0.1.0151

ESET NOD32
Win32/InstallCore.OJ (variant)
8.9872

Fortinet FortiGate
Riskware/InstallCore
5/31/2014

K7 AntiVirus
Unwanted-Program
13.178.12257

Malwarebytes
PUP.Optional.Installcore
v2014.05.31.03

McAfee
CryptInno!2FE9E5AE79D4
5600.7113

Reason Heuristics
PUP.Installer.KawagaSoft.CC
14.6.12.9

Sophos
Install Core Click run software
4.98

Trend Micro House Call
TROJ_GEN.F47V0518
7.2.151

Vba32 AntiVirus
Downware.InstallCore
3.12.26.0

VIPRE Antivirus
InstallCore.b
29776

File size:
598.1 KB (612,496 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

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

Digital Signature
Signed by:
KawagaSoft

Authority:
COMODO CA Limited

Valid from:
4/1/2014 3:00:00 AM

Valid to:
4/2/2015 2:59:59 AM

Subject:
CN=KawagaSoft, O=KawagaSoft, STREET=28A Lilinblam St., L=Tel-Aviv, S=Israel, PostalCode=651307, C=IL

Issuer:
CN=COMODO Code Signing CA 2, O=COMODO CA Limited, L=Salford, S=Greater Manchester, C=GB

Serial number:
00D018EC12F4E67C808322B5B566F010A7

File PE Metadata
Compilation timestamp:
6/20/1992 1:22:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:GfvpBJH+O1v2ICEp2OSMCRW4M7ef97DRC7IVT:GfvfJHDvbVS3ieBR

Entry address:
0x9C40

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, 86, 94, FF, FF, E8, 8D, A6, FF, FF, E8, 1C, A9, FF, FF, E8, 53, C9, FF, FF, E8, 9A, C9, FF, FF, E8, C9, F2, FF, FF, E8, 30, F4, FF, FF, 33, C0, 55, 68, FC, A2, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, C5, A2, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 96, FE, FF, FF, E8, C9, FA, FF, FF, 8D, 55, F0, 33, C0, E8, 83, CF, FF, FF, 8B, 55, F0, B8, 24, CE, 40, 00, E8, 32, 95, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, 24, CE...
 
[+]

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

Code size:
37 KB (37,888 bytes)

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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