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arc1_downloader-ajw9uso8.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 arc1_downloader-ajw9uso8.exe by Somoto Israel has been detected as adware by 15 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.solidfiles.com.
Publisher:
Somoto Israel  (signed and verified)

MD5:
81c6e601822286e05bdf6e486a63b728

SHA-1:
e31ff7c8748a509843ca96ea390d78aba42d8593

SHA-256:
ed601ee50c44d0a7e3aea3e7c8e6e70a0a8de619701e53a11426492bc069dba1

Scanner detections:
15 / 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:
4/23/2024 9:30:56 AM UTC  (today)

Scan engine
Detection
Engine version

AhnLab V3 Security
Win-AppCare/Somoto.236952.D
15.09.21

avast!
Win32:Somoto-O [PUP]
2014.9-150921

AVG
Downloader
2016.0.2980

Clam AntiVirus
Trojan.Agent-267630
0.98/18355

Dr.Web
Trojan.MulDrop4.11744
9.0.1.0264

ESET NOD32
Win32/Somoto
9.9660

K7 AntiVirus
Unwanted-Program
13.176.11721

Malwarebytes
PUP.Optional.Somoto
v2015.09.21.10

McAfee
Artemis!81C6E6018222
5600.6636

Panda Antivirus
PUP/MultiToolbar.A
15.09.21.10

Qihoo 360 Security
Win32/Virus.Downloader.394
1.0.0.1015

Reason Heuristics
PUP.Somoto.SomotoIsrael.Bundler (M)
15.9.21.10

Sophos
Somoto BetterInstaller
4.98

Trend Micro House Call
TROJ_GEN.F47V0403
7.2.264

VIPRE Antivirus
Trojan.Win32.Generic
28194

File size:
231.4 KB (236,928 bytes)

File type:
Executable application (Win32 EXE)

Bundler/Installer:
Somoto BetterInstaller

Common path:
C:\users\{user}\downloads\arc1_downloader-ajw9uso8.exe

Digital Signature
Signed by:
Somoto Israel

Authority:
COMODO CA Limited

Valid from:
7/8/2013 2:00:00 AM

Valid to:
7/9/2018 1:59:59 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 10:14:15 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.56

CTPH (ssdeep):
6144:wJ380o4GMY0ZqlIvx1kaUjJ6OwemTeyiz/5GJDatsgAPs:wF80o4G7PIJpecTti7wwsk

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...
 
[+]

Code size:
30 KB (30,720 bytes)

The file arc1_downloader-ajw9uso8.exe has been seen being distributed by the following URL.

http://www.solidfiles.com/.../ARC1_downloader-aJw9uso8.exe

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