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vnsq5890.tmp

The file vnsq5890.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. It will plug into the web browser and display context-based advertisements by overwriting existing ads or by inserting new ones on various web pages. The file has been seen being downloaded from s3.amazonaws.com.
Version:
1.0.0.0

MD5:
55438a90115e7bfc8dfa6ade212a9b70

SHA-1:
6b091df8de892f22202cf2197187b1fc9c3186b8

SHA-256:
a7e1e2c35e713396b9e3ad6d6cfca61dab574069c9f4efd5b3e7c04cb625cdf7

Scanner detections:
10 / 68

Status:
Potentially unwanted

Explanation:
Injects advertising in the web browser in various formats.

Analysis date:
4/26/2024 2:01:00 PM UTC  (today)

Scan engine
Detection
Engine version

AhnLab V3 Security
PUP/Win32.BrowseFox
2015.06.18

avast!
Win32:Adware-gen [Adw]
2014.9-150707

Baidu Antivirus
Adware.Win32.Downloader
4.0.3.1577

ESET NOD32
Win32/Adware.ConvertAd.SV.gen (variant)
9.11801

Kaspersky
Trojan-Downloader.Win32.Genome
14.0.0.1774

Panda Antivirus
Trj/Chgt.O
15.07.07.03

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

Rising Antivirus
PE:Trojan.Win32.Generic.18C481DD!415531485
23.00.65.15705

Trend Micro House Call
TROJ_GEN.R0C1H07FE15
7.2.188

VIPRE Antivirus
Trojan.Win32.Generic
41208

File size:
595.4 KB (609,639 bytes)

Product version:
1.0.0.0

Copyright:
(c) 2014

Installer:
NSIS (Nullsoft Scriptable Install System)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\roaming\4c4c4544-1432602107-5610-8057-b9c04f564731\vnsq5890.tmp

File PE Metadata
Compilation timestamp:
12/5/2009 2:50:52 PM

OS version:
4.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
6.0

CTPH (ssdeep):
12288:QZbcCxdrRLF+ZPPfnEUnsEWfXsCp2f5cbb3DJjSdKPXGC5XLNG4lzE0MSdaTWGP:QZbzqlvANcCcfiTDJjSdKPrbNVRda6C

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:
7.9795

Packer / compiler:
Nullsoft install system v2.x

Code size:
23.5 KB (24,064 bytes)

The file vnsq5890.tmp has been seen being distributed by the following URL.

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

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