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icreinstall_openoffice.exe

The installer utilizes InstallCore which may bundle about 3-4 offers for various ad-supported toolbars, extensions and utilities. The application icreinstall_openoffice.exe has been detected as adware by 10 anti-malware scanners. The program is a setup application that uses the installCore installer, however the file is not signed with an authenticode signature from a trusted source. The setup program uses the InstallCore engine which may bundle additional software offers including toolbars and browser extensions. With this installer, users are expecting to download the free Apache OpenOffice but before that occurs they may be presented with additional offers, mostly potentially unwanted software or adware.
MD5:
d5973047061703da0a892fb3f875b55c

SHA-1:
5f219728bbf7e3d801d2d3a13cd88a8e6fdcde19

SHA-256:
9d0628540c1a9da7220aa3da89553fad7a556df91a804f25df3e72117af91272

Scanner detections:
10 / 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 also known as bundleware, or downloadware, which is an downloader designed to simply deliver ad-supported offers in the setup routine of an otherwise legitimate software.

Analysis date:
4/26/2024 11:07:49 AM UTC  (today)

Scan engine
Detection
Engine version

AhnLab V3 Security
PUP/Win32.InstallCore
2014.10.25

Avira AntiVirus
ADWARE/InstallCore.Gen
7.11.181.10

Dr.Web
Adware.InstallCore.86
9.0.1.0271

ESET NOD32
Win32/InstallCore.AZ potentially unwanted application
8.7.0.302.0

F-Prot
W32/InstallCore.S.gen
v6.4.6.5.141

K7 AntiVirus
Unwanted-Program
13.166.8577

Rising Antivirus
PE:Malware.XPACK-LNR/Heur!1.5594
23.00.65.141207

Sophos
Install Core
4.98

Trend Micro House Call
TROJ_GEN.F47V0218
7.2.271

VIPRE Antivirus
InstallCore
34214

File size:
1.1 MB (1,203,848 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore

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

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

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
24576:W2wFY1jQwdY9jIe9iUcgGSnsJ473P+1W0b9jRmY:vwGskYR2SnsJy3Pih

Entry address:
0xD6970

Entry point:
55, 8B, EC, 83, C4, F0, B8, E4, 94, 41, 00, E8, F4, D9, FF, FF, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00, 00...
 
[+]

Developed / compiled with:
Microsoft Visual C++

Code size:
869.5 KB (890,368 bytes)

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

https://downloader.downloadster.net/?id=ce3112fd71a38ed55fcdf117394a24f1908b7c9d&ts=1358124441&r=/.../?kw=microsoft office starter&subid=DSTOO&cust=microsoft office starter&type=oo&gclid=CJOhg-fP5rQCFQ3nnAodQCgA2w&utm_campaign=DSTOO&fwd=1

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)

TCP (HTTP):
Connects to cdneu.webfilescdn.com  (65.254.40.36:80)

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