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nsx1025.tmp

The file nsx1025.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 file has been seen being downloaded from s3.amazonaws.com. While running, it connects to the Internet address server-54-192-39-64.jfk1.r.cloudfront.net on port 80 using the HTTP protocol.
MD5:
ea4aeb264222a8495d6ec448af29e9e4

SHA-1:
76eea035f0d6c7dd64042a5213f8e1174bdd64b4

SHA-256:
f73af8c299ca883e68207d366f048d4f64af46dfb8d6a39fc517626ddc3bde80

Scanner detections:
5 / 68

Status:
Potentially unwanted

Analysis date:
4/19/2024 7:12:07 PM UTC  (today)

Scan engine
Detection
Engine version

AhnLab V3 Security
PUP/Win32.VOPackage
2015.09.30

Arcabit
PUP.Adware.ConvertAd
1.0.0.567

Kaspersky
not-a-virus:AdWare.Win32.Vopak
14.0.0.1191

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

Reason Heuristics
Adware.Generic.ABT (M)
16.2.29.17

File size:
235.4 KB (241,055 bytes)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\temp\nsx1025.tmp

File PE Metadata
Compilation timestamp:
12/6/2009 2:50:52 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:ie34A5MpAmWECRXjVRZillIayPK3GLY2bNUbSeAhzsUu:JMpAm+9MlHyS2dKPpUu

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:
7.8836

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file nsx1025.tmp has been seen being distributed by the following URL.

https://s3.amazonaws.com/cf_vopackage/.../SearchUpdater.exe

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

TCP (HTTP):
Connects to server-54-230-38-178.jfk1.r.cloudfront.net  (54.230.38.178:80)

TCP (HTTP):
Connects to server-54-192-39-64.jfk1.r.cloudfront.net  (54.192.39.64:80)

TCP (HTTP):
Connects to ec2-54-235-132-107.compute-1.amazonaws.com  (54.235.132.107:80)

TCP (HTTP):
Connects to ec2-52-1-45-42.compute-1.amazonaws.com  (52.1.45.42:80)

TCP (HTTP):
Connects to ec2-107-21-122-166.compute-1.amazonaws.com  (107.21.122.166:80)

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