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teamviewer.exe

StART NOW

This is the OutBrowse Revenyou installer which bundles offers for additional third party applications that may be unwanted and installed without consent. The application teamviewer.exe by StART NOW 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 OutBrowse Revenyou installer. The file has been seen being downloaded from get.softworldfiles.com.
Publisher:
StART NOW  (signed and verified)

MD5:
9588b82f479a237b8ad1e27386ba0101

SHA-1:
18933b0aee5ad3daf553550ec9484e5a22069fec

SHA-256:
cbf1862603a9a93f387c28c0ed7bec319512a96332d30f14f32b2974851ed8c1

Scanner detections:
1 / 68

Status:
Adware

Note:
Our current pool of anti-malware engines have not currently detected this file, however based on our own detection heuristics we feel that this file is unwanted.

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:
11/15/2024 5:42:18 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
PUP.Outbrowse (M)
16.8.9.22

File size:
597.5 KB (611,808 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
OutBrowse Revenyou (using Nullsoft Install System)

Language:
Language Neutral

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

Digital Signature
Signed by:
StART NOW

Authority:
thawte, Inc.

Valid from:
2/4/2015 4:00:00 PM

Valid to:
12/11/2015 3:59:59 PM

Subject:
CN=StART NOW, O=StART NOW, L=Dublin, S=Dublin, C=IE

Issuer:
CN=thawte SHA256 Code Signing CA, O="thawte, Inc.", C=US

Serial number:
49D186F5D4CD2EA57A61CBF406813874

File PE Metadata
Compilation timestamp:
12/5/2009 2:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:DXmLEslpFTx3ZSlOr86bWf0FkVuZl3tX2jeCW4gBFIXL6bzZE:DXmICFtklzmW08uj9Xker4gBFIXObq

Entry address:
0x30FA

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 60, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 18, EC, 42, 00, E8, F1, 2B, 00, 00, A3, 64, EB, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 98, 8F, 42, 00, FF, 15, 58, 71, 40, 00, 68, 54, 91, 40, 00, 68, 60, E3, 42, 00, E8, A4, 28, 00, 00, FF, 15, AC, 70, 40, 00, BF, 00, 40, 43, 00, 50, 57, E8, 92, 28, 00, 00...
 
[+]

Entropy:
7.9454

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://get.softworldfiles.com/downloadmanager/get?p=3456&d=24542&l=3578&n=1&vm=0&exeurl=http://downloadeu1.teamviewer.com/.../TeamViewer_Setup.exe&dynamicname=TeamViewer&filename=TeamViewer&d2=28000&clickid=1423597815395_1423597806931_104_29263_158277955_1

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