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drmwr_downloader-byljowwo.exe

Somoto Israel

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 drmwr_downloader-byljowwo.exe by Somoto Israel has been detected as adware by 23 anti-malware scanners. The program is a setup application that uses the Somoto BetterInstaller installer. According to AVG, this software downloads additional adware offers during setup. The file has been seen being downloaded from www.download.net.pl and multiple other hosts.
Publisher:
Somoto Israel  (signed and verified)

MD5:
aa265c501dcf9025f958bc48a5574d4a

SHA-1:
5af6b9f95323c21a2b2d024d87a301469e8c13b7

SHA-256:
881c84750dcc8b77ec793ac229642f27fab25d14f8bf060197cfd36762703239

Scanner detections:
23 / 68

Status:
Adware

Explanation:
Uses the Somoto 'BetterInstaller' to bundle additional (unwanted) software during install without adequate consent.

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:
4/18/2024 2:23:28 AM UTC  (today)

Scan engine
Detection
Engine version

Lavasoft Ad-Aware
Application.Bundler.Somoto.G
547

AhnLab V3 Security
Win-AppCare/Somoto.236920.B
2014.06.04

Avira AntiVirus
APPL/Somoto.fses
7.11.152.220

avast!
Win32:Somoto-O [PUP]
2014.9-150806

AVG
Downloader
2016.0.3025

Bitdefender
Application.Bundler.Somoto.G
1.0.20.1090

Clam AntiVirus
Trojan.Agent-267630
0.98/213

Comodo Security
Application.Win32.Somoto.DTL
18426

Dr.Web
Trojan.MulDrop4.11744
9.0.1.0218

ESET NOD32
Win32/Somoto
9.9889

F-Secure
Application.Bundler.Somoto
11.2015-06-08_5

G Data
Application.Bundler.Somoto
15.8.24

K7 AntiVirus
Unwanted-Program
13.178.12292

Malwarebytes
PUP.Optional.Somoto
v2015.08.06.09

McAfee
Artemis!AA265C501DCF
5600.6681

MicroWorld eScan
Application.Bundler.Somoto.G
16.0.0.654

NANO AntiVirus
Trojan.Nsis.Mazel.cwhyud
0.28.0.60100

Panda Antivirus
PUP/MultiToolbar.A
15.08.06.09

Qihoo 360 Security
Win32/Virus.Downloader.394
1.0.0.1015

Reason Heuristics
PUP.Somoto.SomotoIsrael.Bundler (M)
15.8.6.21

Sophos
Somoto BetterInstaller
4.98

Trend Micro House Call
TROJ_GEN.F47V0515
7.2.218

VIPRE Antivirus
Trojan.Win32.Generic
29914

File size:
231.4 KB (236,920 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Somoto BetterInstaller

Common path:
C:\users\{user}\downloads\drmwr_downloader-byljowwo.exe

Digital Signature
Signed by:
Somoto Israel

Authority:
COMODO CA Limited

Valid from:
7/8/2013 5:30:00 AM

Valid to:
7/9/2018 5:29:59 AM

Subject:
CN=Somoto Israel, O=Somoto Israel, STREET=Habarzel 32, L=Tel Aviv, S=--, PostalCode=69700, C=IL

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

Serial number:
74F2E607D2905C0E3EA9C8AB59942D25

File PE Metadata
Compilation timestamp:
12/17/2010 2:44:15 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.56

CTPH (ssdeep):
6144:oJ380o6vGMY0ZqXLgTkRwkNVVv0kmGgAPJ:oF80o6vG7ZLgTkOkjF0OB

Entry address:
0x380C

Entry point:
55, 89, E5, 57, 56, 53, 81, EC, 7C, 01, 00, 00, E8, 87, 4D, 00, 00, 83, EC, 0C, 68, 01, 80, 00, 00, E8, 2A, 4A, 00, 00, 6A, 00, E8, 9B, 4D, 00, 00, 6A, 08, A3, 28, F9, 42, 00, E8, B1, 28, 00, 00, 6A, 00, 68, 60, 01, 00, 00, A3, D8, F9, 42, 00, 8D, 85, 90, FE, FF, FF, 50, 6A, 00, 68, 4C, A2, 40, 00, E8, E0, 4C, 00, 00, 83, EC, 0C, 68, 4D, A2, 40, 00, 68, 08, FA, 42, 00, E8, EF, 2A, 00, 00, 83, C4, 18, E8, E6, 49, 00, 00, 52, 52, 50, 68, 00, 80, 43, 00, E8, DA, 2A, 00, 00, 57, 6A, 00, E8, 29, 49, 00, 00, 83...
 
[+]

Entropy:
7.7632  (probably packed)

Code size:
30 KB (30,720 bytes)

The file drmwr_downloader-byljowwo.exe has been seen being distributed by the following 2 URLs.

http://www.download.net.pl/.../MicrosoftOfficePowerPoint2010_downloader-4cS8VV8R.exe

http://www.solidfiles.net/.../Drmwr_downloader-byLJoWWo.exe

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