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prepreinstaller_win.exe

The application prepreinstaller_win.exe has been detected as a potentially unwanted program by 1 anti-malware scanner with very strong indications that the file is a potential threat. This is a setup program which is used to install the application. The file has been seen being downloaded from dm66z9a6d4fcx.cloudfront.net.
MD5:
0d42de92e2615b8fa1bdbd078ea3390a

SHA-1:
ab352b667aa08eb83b2f59f248d6092ad5d22f4f

SHA-256:
8bf509b7fdac7dc8c7b6facc27dd296335ef31eb735ba2d61e61eab5bb2c33c6

Scanner detections:
1 / 68

Status:
Potentially unwanted

Analysis date:
1/18/2025 4:09:35 AM UTC  (today)

Scan engine
Detection
Engine version

Reason Heuristics
Adware.Downloader (M)
16.7.24.16

File size:
1.2 MB (1,206,639 bytes)

File type:
Executable application (Win32 EXE)

Common path:
C:\users\{user}\appdata\local\microsoft\windows\temporary internet files\content.ie5\{random}\prepreinstaller_win.exe

File PE Metadata
Compilation timestamp:
7/31/1996 11:34:36 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
24576:BlvUUejKnCf4VBMJIHTxeis5OJT7NNvm7W3ei0DGpHrW7At9hgPtk:BhxnCf4nM6Hler50T7e7dfid9hge

Entry address:
0x54000

Entry point:
60, E8, 00, 00, 00, 00, 5D, 8B, C5, 81, ED, A8, A6, 01, 20, 2B, 85, 0F, AE, 01, 20, 89, 85, 0B, AE, 01, 20, B0, 00, 86, 85, 40, B0, 01, 20, 3C, 01, 0F, 85, BC, 01, 00, 00, 83, BD, 3B, AF, 01, 20, 00, 74, 33, 83, BD, 3F, AF, 01, 20, 00, 74, 2A, 8B, 85, 0B, AE, 01, 20, 2B, 85, 3B, AF, 01, 20, 8B, 00, 89, 85, 78, AF, 01, 20, 8B, 85, 0B, AE, 01, 20, 2B, 85, 3F, AF, 01, 20, 8B, 00, 89, 85, 7C, AF, 01, 20, EB, 61, 83, BD, 43, AF, 01, 20, 00, 74, 58, 8B, 85, 0B, AE, 01, 20, 2B, 85, 43, AF, 01, 20, FF, 30, 8D, 85...
 
[+]

Entropy:
7.8507

Packer / compiler:
ASPack v1.08.04

Code size:
100 KB (102,400 bytes)

The file prepreinstaller_win.exe has been seen being distributed by the following URL.

http://dm66z9a6d4fcx.cloudfront.net/prepreinstaller_win.exe

Remove prepreinstaller_win.exe - Powered by Reason Core Security
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