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icreinstall_cr_downloader_para_crash-twinsanity-(v1.00).exe

eCHANG Net Inc.

The installer utilizes InstallCore which may bundle about 3-4 offers for various ad-supported toolbars, extensions and utilities. The application icreinstall_cr_downloader_para_crash-twinsanity-(v1.00).exe by eCHANG Net 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 installCore installer. 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:
eCHANG Net Inc.  (signed and verified)

MD5:
039f73e65cc270a9715e97f451eedf99

SHA-1:
f7483ef4dbfeb02eeaacd32d2294bd85d178a5db

SHA-256:
650028e011ad70a04a7cdcacddaed9460658543201dbc1b1558da490eac545bf

Scanner detections:
1 / 68

Status:
Adware

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

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:
4/20/2024 5:10:24 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.installCore.eCHANGNet (M)
16.2.15.12

File size:
610.2 KB (624,872 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
installCore (using Inno Setup)

Common path:
C:\users\{user}\appdata\local\temp\icreinstall_cr_downloader_para_crash-twinsanity-(v1.00).exe

Digital Signature
Signed by:
eCHANG Net Inc.

Authority:
COMODO CA Limited

Valid from:
3/30/2014 9:00:00 PM

Valid to:
3/31/2015 8:59:59 PM

Subject:
CN=eCHANG Net Inc., O=eCHANG Net Inc., STREET=3108 Willow Street, L=Vancouver, S=British Columbia, PostalCode=V5Z3P5, C=CA

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

Serial number:
0997D086DE4B5F5B73AA93E13ED58468

File PE Metadata
Compilation timestamp:
6/19/1992 7:22:17 PM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:a9XvpPDf973FQOLDvMQhy8E+qJBOz+3m8ZatAl8Zr8mx64Devm2Q+:a5vdDf97FBXvMQUKDMm8At9ZPFevpQ

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)

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

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