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optin.php

The file optin.php has been detected as a potentially unwanted program by 11 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 install-apps.com and multiple other hosts.
MD5:
e00ceeeae0bd44a61edad8d0060f714c

SHA-1:
12baef24c4c1d0b3eabafd7286611aa4d4ce2f4e

SHA-256:
e927f2102257848e0512f81d89418e6ec4e66dc2fd6be857e8da27c810ab7f00

Scanner detections:
11 / 68

Status:
Potentially unwanted

Analysis date:
11/24/2024 12:14:42 AM UTC  (today)

Scan engine
Detection
Engine version

Avira AntiVirus
ADWARE/Wajam.A.505
8.3.1.6

Baidu Antivirus
PUA.Win32.Wajam
4.0.3.15820

Dr.Web
Threat.Undefined
9.0.1.05190

ESET NOD32
MSIL/Wajam.C potentially unwanted application
7.0.302.0

F-Prot
W32/MSIL_Injector.AE.gen
v6.4.7.1.166

G Data
NSIS.Application.Wajam
15.8.25

IKARUS anti.virus
PUA.MSIL.Wajam
t3scan.1.9.5.0

Kaspersky
not-a-virus:AdWare.Win32.Wajam
14.0.0.1550

NANO AntiVirus
Trojan.Nsis.Wajam.dqgtqq
0.30.24.3079

Qihoo 360 Security
HEUR/QVM42.1.Malware.Gen
1.0.0.1015

Zillya! Antivirus
Trojan.Win32.1DB12147
2.0.0.2364

File size:
2.3 MB (2,375,905 bytes)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\inetcache\ie\{random}\optin.php

File PE Metadata
Compilation timestamp:
12/5/2009 2:50:46 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
49152:d7Va0DBio3ig0dN3MAqQU0WgkWgG5iS9g0bd50kt9ayEG8:VVa0Dkof8N3MAqwgG5iybdKkjCH

Entry address:
0x323C

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, 30, 91, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 70, 40, 00, 68, 01, 80, 00, 00, FF, 15, B4, 70, 40, 00, 53, FF, 15, 7C, 72, 40, 00, 6A, 08, A3, 58, 3F, 42, 00, E8, 09, 2C, 00, 00, A3, A4, 3E, 42, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, 58, F4, 41, 00, FF, 15, 58, 71, 40, 00, 68, B8, 91, 40, 00, 68, A0, 36, 42, 00, E8, BC, 28, 00, 00, FF, 15, B0, 70, 40, 00, BF, 00, 90, 42, 00, 50, 57, E8, AA, 28, 00, 00...
 
[+]

Entropy:
7.9931

Packer / compiler:
Nullsoft install system v2.x

Code size:
23 KB (23,552 bytes)

The file optin.php has been seen being distributed by the following 2 URLs.

http://install-apps.com/.../WIE_2.35.2.51.exe

http://installsofttech.com/.../WIE_2.35.2.51.exe

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