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nsc49df.tmp

The file nsc49df.tmp has been detected as a potentially unwanted program by 10 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-54-230-52-251.jfk6.r.cloudfront.net on port 80 using the HTTP protocol.
MD5:
a2960f7d01b378ac89f3bd7b1c082dd8

SHA-1:
f48bc2ea3cad6929f9475c836472ecea61517edf

SHA-256:
ca27fdc2d309db4318accd8e73a85bb3b0d0f0ff5ffc94e35aa75e67e97ec5e4

Scanner detections:
10 / 68

Status:
Potentially unwanted

Analysis date:
4/24/2024 5:48:58 PM UTC  (today)

Scan engine
Detection
Engine version

AhnLab V3 Security
PUP/Win32.VOPackage
2015.12.05

Avira AntiVirus
ADWARE/Vopak.252084
8.3.2.4

Arcabit
PUP.Adware.ConvertAd
1.0.0.628

avast!
Win32:Dropper-gen [Drp]
2014.9-160103

Baidu Antivirus
Adware.Win32.Vopak
4.0.3.1613

Kaspersky
not-a-virus:AdWare.Win32.Vopak
14.0.0.871

McAfee
Artemis!A2960F7D01B3
5600.6531

Panda Antivirus
Generic Suspicious
16.01.03.05

Trend Micro
TROJ_GEN.R047C0OL115
10.465.03

VIPRE Antivirus
Adware.Win32.Vopak
45614

File size:
246.2 KB (252,084 bytes)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\temp\nsc49df.tmp

File PE Metadata
OS bitness:
Win64

CTPH (ssdeep):
6144:Se34QvMZqnbEzW1NiVDpLXuYJ1cTbyRO05G3c7:tMKP1NiVhJOTbyRb5Gs7

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:
7.8920

Packer / compiler:
Nullsoft install system v2.x

The file nsc49df.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-54-230-53-82.jfk6.r.cloudfront.net  (54.230.53.82:80)

TCP (HTTP):
Connects to server-54-230-52-251.jfk6.r.cloudfront.net  (54.230.52.251:80)

TCP (HTTP):
Connects to server-54-192-55-83.jfk6.r.cloudfront.net  (54.192.55.83:80)

TCP (HTTP):
Connects to server-54-192-55-28.jfk6.r.cloudfront.net  (54.192.55.28:80)

TCP (HTTP):
Connects to server-205-251-251-94.jfk5.r.cloudfront.net  (205.251.251.94:80)

TCP (HTTP):
Connects to server-205-251-251-79.jfk5.r.cloudfront.net  (205.251.251.79:80)

TCP (HTTP):
Connects to server-205-251-251-28.jfk5.r.cloudfront.net  (205.251.251.28:80)

TCP (HTTP):
Connects to server-205-251-251-241.jfk5.r.cloudfront.net  (205.251.251.241:80)

TCP (HTTP):
Connects to server-205-251-251-105.jfk5.r.cloudfront.net  (205.251.251.105:80)

TCP (HTTP):
Connects to ec2-54-225-164-100.compute-1.amazonaws.com  (54.225.164.100:80)

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

TCP (HTTP):
Connects to ec2-107-22-235-143.compute-1.amazonaws.com  (107.22.235.143:80)

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