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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. It is also typically executed from an Internet Explorer cache folder. The file has been seen being downloaded from s3.amazonaws.com.
Publisher:
Install Solution LTDA  (signed and verified)

MD5:
9d6eea7a4ca40a9e456ceef5e8b4dff8

SHA-1:
d19bd53dca0657ed7d1151724d8014e6da51c1b8

SHA-256:
79b6f003b1e82a915991f6ceb53e43f042011742ff4e5a861e46cace817f64b3

Scanner detections:
9 / 68

Status:
Adware

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:
11/14/2024 2:10:22 AM UTC  (today)

Scan engine
Detection
Engine version

Baidu Antivirus
Adware.Win32.Somoto
4.0.3.15831

Dr.Web
Trojan.Packed.27860
9.0.1.0243

ESET NOD32
Win32/Somoto
9.10621

McAfee
Artemis!9D6EEA7A4CA4
5600.6656

Qihoo 360 Security
HEUR/Malware.QVM06.Gen
1.0.0.1015

Reason Heuristics
PUP.Somoto.InstallSolutionA (M)
15.8.31.19

Sophos
Generic PUA NB (PUA)
4.98

SUPERAntiSpyware
PUP.Somoto/Variant
9543

VIPRE Antivirus
Trojan.Win32.Generic
43258

File size:
243.4 KB (249,224 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Somoto BetterInstaller

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\vdownloader4oc.exe

Digital Signature
Signed by:
Install Solution LTDA

Authority:
Unizeto Technologies S.A.

Valid from:
1/31/2014 5:50:18 AM

Valid to:
1/31/2015 5:50:18 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 9:14:08 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.56

CTPH (ssdeep):
6144:ZSPeE3/0oxkhJKt1T/wOFt8sHcIlZjrTKjq2a0Eym4G:0PeU/0oMJK/F31rTKzltG

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 URL.

https://s3.amazonaws.com/.../VDownloader4OC.exe

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