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nsk7948.tmp

Setup

The file nsk7948.tmp has been detected as a potentially unwanted program by 5 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 program bundles adware offers using the Amonetize, a Pay-Per-Install (PPI) monetization and distribution download manager. The software offerings provided are based on the PC's geo-location at the time of install. The file has been seen being downloaded from 113.171.224.178 and multiple other hosts. While running, it connects to the Internet address net-inst-ash.opera.com on port 80 using the HTTP protocol.
Product:
Setup

Version:
1.0.35.7

MD5:
bdbf378c0229dd6e72b2909b729ab6cb

SHA-1:
54b82daecebe4901986f80bc76fa651eac803b00

SHA-256:
a858ee6d5093a687694f17c08a4caa947b08f49ae26300b6186baf49099f22c5

Scanner detections:
5 / 68

Status:
Potentially unwanted

Analysis date:
4/26/2024 5:50:04 PM UTC  (today)

Scan engine
Detection
Engine version

Agnitum Outpost
Trojan.Amonetize
7.1.1

Dr.Web
infected with Trojan.Amonetize.3133
9.0.1.05190

G Data
Win32.Application.Amonetize.AI
15.10.25

Malwarebytes
PUP.Optional.Amonetize
v2015.10.06.06

McAfee
Artemis!E72A358D9CA0
5600.6620

File size:
113.4 KB (116,078 bytes)

Product version:
1.0.35.7

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\temp\nsk7948.tmp

File PE Metadata
Compilation timestamp:
12/6/2009 6:53:24 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
3072:oCuFP2lXIHDgXJFEddHsOdponQzYqmlYoR+iU2QaC9c9N:o183YHHsgpon1qEcaK4

Entry address:
0x355E

Entry point:
81, EC, 80, 01, 00, 00, 53, 55, 56, 33, DB, 57, 89, 5C, 24, 18, C7, 44, 24, 10, B8, A7, 40, 00, 33, F6, C6, 44, 24, 14, 20, FF, 15, 30, 80, 40, 00, 68, 01, 80, 00, 00, FF, 15, B0, 80, 40, 00, 53, FF, 15, 88, 82, 40, 00, 6A, 08, A3, 98, 10, 43, 00, E8, D6, 2E, 00, 00, A3, E4, 0F, 43, 00, 53, 8D, 44, 24, 34, 68, 60, 01, 00, 00, 50, 53, 68, E8, A7, 42, 00, FF, 15, 58, 81, 40, 00, 68, AC, A7, 40, 00, 68, E0, 07, 43, 00, E8, DC, 29, 00, 00, FF, 15, AC, 80, 40, 00, BF, 00, 70, 43, 00, 50, 57, E8, CA, 29, 00, 00...
 
[+]

Entropy:
7.7098

Packer / compiler:
Nullsoft install system v2.x

Code size:
25 KB (25,600 bytes)

The file nsk7948.tmp has been seen being distributed by the following 4 URLs.

http://113.171.224.178/.../Bundle_OperaWW.exe

http://116.77.75.205/1Q2W3E4R5T6Y7U8I9O0P1Z2X3C4V5B/www.software-forus.com/.../Bundle_OperaWW.exe

http://113.171.224.203/.../Bundle_OperaWW.exe

http://www.software-forus.com/.../Bundle_OperaWW.exe

The executing file has been seen to make the following network communication in live environments.

TCP (HTTP):
Connects to net-inst-ash.opera.com  (37.228.108.239:80)

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