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installer.exe

The application installer.exe has been detected as a potentially unwanted program by 16 anti-malware scanners. The program is a setup application that uses the NSIS (Nullsoft Scriptable Install System) installer, however the file is not signed with an authenticode signature from a trusted source. The setup routine uses the RevenYou.Com Pay Per Install platform (OutBrowse) which bundles additional software offers inclduing toolbars, extensions, PC utilities as well as other PUPs. The file has been seen being downloaded from downloader2.downloadinfo.co a web site host known to distribute potentially unwanted software operated by Downloadinfo.
MD5:
04f89da1e34f1a433a30d7a558351beb

SHA-1:
4385471d13d09444fb08a04fa129708d0ec9775d

SHA-256:
f8b3b4224978831706cf5e8d560073bd97fa38e15803beb26c0facfcccbdc536

Scanner detections:
16 / 68

Status:
Potentially unwanted

Explanation:
Bundles additional adware offers during download and installation using the OutBrowse installer.

Analysis date:
4/24/2024 10:27:36 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
PUA.OutBrowse
7.1.1

AhnLab V3 Security
PUP/Win32.OutBrowse
2015.11.21

Avira AntiVirus
PUA/Outbrowse.Gen
8.3.2.4

avast!
OutBrowse-U [PUP]
151004-0

Clam AntiVirus
Win.Adware.Browsefox-14026
0.98/21074

Dr.Web
Threat.Undefined
9.0.1.05190

ESET NOD32
Win32/OutBrowse.M potentially unwanted application
7.0.302.0

Fortinet FortiGate
Riskware/OutBrowse
11/20/2015

F-Prot
W32/Outbrowse.B.gen
v6.4.7.1.166

G Data
Win32.Application.OutBrowse
15.11.25

IKARUS anti.virus
AdWare.Downware
t3scan.1.9.5.0

McAfee
Program.Adware-OutBrowse
18.0.204.0

NANO AntiVirus
Trojan.Win32.Generic.cthmwf
0.30.26.4751

Qihoo 360 Security
HEUR/QVM42.0.Malware.Gen
1.0.0.1077

Total Defense
Win32/Tnega.EKIKMED
37.1.62.1

VIPRE Antivirus
Threat.4784459
45208

File size:
100.7 KB (103,074 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
Language Neutral

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

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

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
3072:OgXdZt9P6D3XJBCun5Ky/9XO3jR0eWSzUu/0WH:Oe34GunUQ9OzRgW/cQ

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:
7.6619

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://downloader2.downloadinfo.co/download.php?id=b72957883e959c3bd1a389dd922d1858d45cc315&z=8&p=eyJweSI6ImRpIiwicnMiOiJnb29nbGUiLCJydCI6InNlYXJjaCIsImMiOiJ1cyIsIm8iOiJ3aW43IiwiYiI6ImNoMzMiLCJ1X2lkIjoiZGlfNTMzNjI2YTNjOGExMDQuMTI1MDcwMDgiLCJwYV9pZCI6IjgiLCJzdF9pZCI6IjAiLCJzcF9pZCI6IjAwMDAtMDAwMCIsInRzIjoxMzk2MDU3NzY0LCJrdyI6IldpbmRvd3MgVXBkYXRlIiwiY3UiOiJ3aW5kb3dzIHVwZGF0ZSIsImNhIjpudWxsfQ==

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