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DefaultTab.exe

DefaultTab

The application DefaultTab.exe has been detected as adware by 17 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 file has been seen being downloaded from cdn.outbrowse.com.
Publisher:
DefaultTab

Product:
DefaultTab

Version:
1.0 ??

MD5:
e31a902c38277806dd241fce0422f1b2

SHA-1:
6fd1d183fbbbef209d277334c8bf0e81ccb1dc51

SHA-256:
beecbf2f4c4da45890522084901e0fd5d3f32801bc553b6dea2db373a1011518

Scanner detections:
17 / 68

Status:
Adware

Analysis date:
12/24/2024 3:11:58 PM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:Adware-gen [Adw]
2014.9-130827

Baidu Antivirus
Trojan.Win32.Agent
4.0.3.131126

Dr.Web
Adware.Plugin.48
9.0.1.0239

ESET NOD32
Win32/DownWare
7.9190

F-Secure
Dropped:Adware.Agent.NPP
11.2013-20-12_6

G Data
Win32.Trojan.Agent.T8NWTU
13.8.22

herdProtect (fuzzy)
variant of DefaultTabCnetSmart.exe (Adware)
2013.12.20.16

IKARUS anti.virus
Win32.AdWare
t3scan.2.2.29

K7 AntiVirus
Trojan
13.174.10656

Malwarebytes
PUP.DefaultTab
v2013.08.27.10

McAfee
Artemis!E31A902C3827
5600.7267

MicroWorld eScan
Dropped:Adware.Agent.NPP
14.0.0.1062

Norman
Suspicious_Gen4.EFFXV
11.20130827

Panda Antivirus
Suspicious file
13.08.27.10

Reason Heuristics
PUP.DefaultTab.K
14.3.1.0

Trend Micro House Call
TROJ_GEN.F47V0605
7.2.239

VIPRE Antivirus
Trojan.Win32.Generic
24836

File size:
2.8 MB (2,906,732 bytes)

File type:
Executable application (Win32 EXE)

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
English (United States)

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

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):
49152:P0WDL1a9st1XvkdGBYSKgKShAuzZEQCy45FzcK2ZQpD8gaHiSb7W/n4qrFk+NwdP:PRH1T1XvuGdKShAl1FP204RH1b7k4YHM

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:
7.9926

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

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

http://cdn.outbrowse.com/.../DefaultTab.exe

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