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nst1eea.tmp

The file nst1eea.tmp has been detected as a potentially unwanted program by 7 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-54-230-53-82.jfk6.r.cloudfront.net on port 80 using the HTTP protocol.
MD5:
b23664eda387338128f4acea09810f5c

SHA-1:
a5243295f18ddaef476ccab27e79d8644f1a18cd

SHA-256:
b2e8bc2617f0951aff9d9682d2035bba33d581dd605978e9bdf0d079b17eac8f

Scanner detections:
7 / 68

Status:
Potentially unwanted

Analysis date:
4/18/2024 1:49:17 AM UTC  (today)

Scan engine
Detection
Engine version

AhnLab V3 Security
PUP/Win32.VOPackage
2015.10.28

Arcabit
PUP.Adware.ConvertAd
1.0.0.585

Baidu Antivirus
Adware.Win32.Vopak
4.0.3.15121

Clam AntiVirus
Win.Adware.Browsefox-14026
0.98/21511

Kaspersky
not-a-virus:AdWare.Win32.Vopak
15.0.0.562

Panda Antivirus
Generic Suspicious
15.12.01.05

Qihoo 360 Security
HEUR/QVM42.1.Malware.Gen
1.0.0.1077

File size:
229.4 KB (234,870 bytes)

Installer:
NSIS (Nullsoft Scriptable Install System)

Common path:
C:\users\{user}\appdata\local\temp\nst1eea.tmp

File PE Metadata
Compilation timestamp:
12/6/2009 1:50:52 AM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
6144:Ge34N9Pne3/Xy3ABL7WEuKUrbkRHANANj8:qxne3/XMXEAsx8

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:
7.8812

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file nst1eea.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 ec2-52-1-45-42.compute-1.amazonaws.com  (52.1.45.42:80)

TCP (HTTP):
Connects to ec2-23-23-142-135.compute-1.amazonaws.com  (23.23.142.135:80)

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