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nss20fa.tmp

The file nss20fa.tmp has been detected as a potentially unwanted program by 3 anti-malware scanners. The program is a setup application that uses the installCore installer, however the file is not signed with an authenticode signature from a trusted source. The setup program uses the InstallCore engine which may bundle additional software offers including toolbars and browser extensions. The file has been seen being downloaded from www.download-servers.com.
MD5:
b9cad667dbe83cd172e53d3e883f5112

SHA-1:
a5b20277902c881a780e9331c9cfd414dbdb90ee

SHA-256:
8c4b5b5da5c7fd63c1bcf1852e8d37217a6870b5c9a94bbeec11fd867a394693

Scanner detections:
3 / 68

Status:
Potentially unwanted

Explanation:
Uses the InstallCore download manager to install additional potentially unwanted software which may include extensions such as DealPly and various toolbars.

Description:
This 'download manager' is also considered bundleware, a utility designed to download software (possibly legitimate or opensource) and bundle it with a number of optional offers including ad-supported utilities, toolbars, shopping comparison tools and browser extensions.

Analysis date:
4/24/2024 10:47:03 PM UTC  (today)

Scan engine
Detection
Engine version

AVG
Adware InstallCore.ALX
2015.0.4489

ESET NOD32
Win32/InstallCore.PL potentially unwanted application
7.0.302.0

Reason Heuristics
PUP.InstallCore.Bundler (M)
16.1.13.15

File size:
576.6 KB (590,454 bytes)

Bundler/Installer:
installCore (using Inno Setup)

Language:
Language Neutral

Common path:
C:\users\{user}\appdata\local\temp\nss20fa.tmp

File PE Metadata
Compilation timestamp:
6/20/1992 5:22:17 AM

OS version:
1.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
2.25

CTPH (ssdeep):
12288:J6vp4jz/ResBJJSf7b+7ttEKstdjUFT0qaNvtKqABjxBo93lYWE:J6vijzI6mf767tjsjcQrEq29q3Y

Entry address:
0x9C40

Entry point:
55, 8B, EC, 83, C4, C4, 53, 56, 57, 33, C0, 89, 45, F0, 89, 45, DC, E8, 86, 94, FF, FF, E8, 8D, A6, FF, FF, E8, 1C, A9, FF, FF, E8, 53, C9, FF, FF, E8, 9A, C9, FF, FF, E8, C9, F2, FF, FF, E8, 30, F4, FF, FF, 33, C0, 55, 68, FC, A2, 40, 00, 64, FF, 30, 64, 89, 20, 33, D2, 55, 68, C5, A2, 40, 00, 64, FF, 32, 64, 89, 22, A1, 14, C0, 40, 00, E8, 96, FE, FF, FF, E8, C9, FA, FF, FF, 8D, 55, F0, 33, C0, E8, 83, CF, FF, FF, 8B, 55, F0, B8, 24, CE, 40, 00, E8, 32, 95, FF, FF, 6A, 02, 6A, 00, 6A, 01, 8B, 0D, 24, CE...
 
[+]

Entropy:
7.8628

Packer / compiler:
Inno Setup v5.x - Installer Maker

Code size:
37 KB (37,888 bytes)

The file nss20fa.tmp has been seen being distributed by the following URL.

http://www.download-servers.com/.../dl.php?r=vu_vo2_VL1&rr=UN&sct=AGR&sid=

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