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vdownloader4oc.exe

Install Solution LTDA

This is the Somoto BetterInstaller, an installer that bundles applications with offers for additional 3rd party software, mostly unwanted adware, and may be installed without consent. The application vdownloader4oc.exe by Install SolutionA has been detected as adware by 9 anti-malware scanners. The program is a setup application that uses the Somoto BetterInstaller installer. The file has been seen being downloaded from s3-sa-east-1.amazonaws.com and multiple other hosts.
Publisher:
Install Solution LTDA  (signed and verified)

MD5:
606ed19f0461857fc4c7a51c6d65950d

SHA-1:
9957ee83ba5079d0d2536393b03540cb73d6a73f

SHA-256:
4b10b32323d8634c6ae984831d69b5a20e00c6509b0b8ae03d907e15d1e5dfc0

Scanner detections:
9 / 68

Status:
Adware

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:
5/7/2024 6:58:29 PM UTC  (today)

Scan engine
Detection
Engine version

Baidu Antivirus
Adware.Win32.Somoto
4.0.3.1545

Dr.Web
Trojan.Packed.27860
9.0.1.095

ESET NOD32
Win32/Somoto.P potentially unwanted
9.11134

McAfee
Artemis!C53636A97D8A
5600.6804

Qihoo 360 Security
HEUR/QVM42.0.Malware.Gen
1.0.0.1015

Reason Heuristics
PUP.Bundler.Somoto
15.4.5.14

SUPERAntiSpyware
PUP.Somoto/Variant
9953

Trend Micro House Call
Suspicious_GEN.F47V0128
7.2.190

VIPRE Antivirus
Trojan.Win32.Generic
37316

File size:
243.4 KB (249,224 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Somoto BetterInstaller

Common path:
C:\users\{user}\downloads\vdownloader4oc.exe

Digital Signature
Signed by:
Install Solution LTDA

Authority:
Unizeto Technologies S.A.

Valid from:
1/31/2014 3:50:18 AM

Valid to:
1/31/2015 3:50:18 AM

Subject:
E=suporte@installsolution.com.br, CN="Open Source Developer, Install Solution LTDA", O=Install Solution LTDA, C=BR

Issuer:
CN=Certum Level III CA, OU=Certum Certification Authority, O=Unizeto Technologies S.A., C=PL

Serial number:
5FA3F40AF30F88E29492DC309E9D0432

File PE Metadata
Compilation timestamp:
12/17/2010 7:14:08 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.56

CTPH (ssdeep):
6144:fSPeE3/0oxkhJKt1T/wOFt8sHcIlZjrTKjq2a0Eym4k:qPeU/0oMJK/F31rTKzltk

Entry address:
0x39B4

Entry point:
55, 89, E5, 57, 56, 53, 81, EC, 7C, 01, 00, 00, E8, 43, 48, 00, 00, 83, EC, 0C, 68, 01, 80, 00, 00, E8, EE, 44, 00, 00, 6A, 00, E8, 57, 48, 00, 00, 6A, 08, A3, C8, 34, 7A, 00, E8, B1, 28, 00, 00, 6A, 00, 68, 60, 01, 00, 00, A3, 78, 35, 7A, 00, 8D, 85, 90, FE, FF, FF, 50, 6A, 00, 68, A4, A2, 40, 00, E8, 9C, 47, 00, 00, 83, EC, 0C, 68, A5, A2, 40, 00, 68, A8, 35, 7A, 00, E8, EF, 2A, 00, 00, 83, C4, 18, E8, AA, 44, 00, 00, 52, 52, 50, 68, 00, C0, 7A, 00, E8, DA, 2A, 00, 00, 57, 6A, 00, E8, E5, 43, 00, 00, 83...
 
[+]

Code size:
29 KB (29,696 bytes)

The file vdownloader4oc.exe has been seen being distributed by the following 3 URLs.

https://s3-sa-east-1.amazonaws.com/.../VDownloader4OC.exe

https://s3-sa-east-1.amazonaws.com/.../VDownloader4OC.exe

http://vdownloader.com.br/get/.../?p=button

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