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prepreinstaller_win.exe

The executable prepreinstaller_win.exe has been detected as malware by 10 anti-virus scanners. This is a setup program which is used to install the application. Accoriding to the detections, it is a variant of Zbot (Zeus), a trojan that attempts to steal confidential information (online credentials, and banking details) from a compromised computer and send it to online criminals via a command-and-control server. The file has been seen being downloaded from d14940vm2n7yym.cloudfront.net.
MD5:
02fd29cbd6f9cead081884638fc12c6d

SHA-1:
7a0254c872c8e5ff39a6b3c7e05c96a7b1f4f3a5

SHA-256:
2d1b3a729313608d1e433658423d47a4b7588609e3e98bc8f9f6c67e616c904a

Scanner detections:
10 / 68

Status:
File is infected by a Virus

Explanation:
The file is infected by a polymorphic file infector virus.

Analysis date:
4/28/2025 8:36:59 AM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:RmnDrp
160327-1

AVG
Win32/Zbot.G
2015.0.4542

Dr.Web
Win32.Siggen.7
9.0.1.05190

Emsisoft Anti-Malware
Win32.Ramnit.N
11.5.0.6191

ESET NOD32
Win32/Ramnit.H virus
8.0.319.0

F-Prot
W32/Ramnit.D
4.6.5.141

F-Secure
Win32.Ramnit.N
5.15.21

Kaspersky
Virus.Win32.Nimnul
15.0.0.562

Microsoft Security Essentials
Threat.Undefined
1.215.3133.0

Norman
Win32.Ramnit.N
29.03.2016 06:29:16

File size:
344.4 KB (352,639 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:
3/27/2016 8:01:32 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

CTPH (ssdeep):
6144:fJMRatF38e3qJc3OqScMID1homKTzT3CwmvutlMv:hZ1NAc+qScMID1hhKTzTywEuf0

Entry address:
0x4C000

Entry point:
60, E8, 00, 00, 00, 00, 5D, 8B, C5, 81, ED, 1E, A5, 01, 20, 2B, 85, 85, AC, 01, 20, 89, 85, 81, AC, 01, 20, B0, 00, 86, 85, B6, AE, 01, 20, 3C, 01, 0F, 85, BC, 01, 00, 00, 83, BD, B1, AD, 01, 20, 00, 74, 33, 83, BD, B5, AD, 01, 20, 00, 74, 2A, 8B, 85, 81, AC, 01, 20, 2B, 85, B1, AD, 01, 20, 8B, 00, 89, 85, EE, AD, 01, 20, 8B, 85, 81, AC, 01, 20, 2B, 85, B5, AD, 01, 20, 8B, 00, 89, 85, F2, AD, 01, 20, EB, 61, 83, BD, B9, AD, 01, 20, 00, 74, 58, 8B, 85, 81, AC, 01, 20, 2B, 85, B9, AD, 01, 20, FF, 30, 8D, 85...
 
[+]

Packer / compiler:
ASPack v1.08.04

Code size:
125.5 KB (128,512 bytes)

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

http://d14940vm2n7yym.cloudfront.net/prepreinstaller_win.exe

Remove prepreinstaller_win.exe - Powered by Reason Core Security
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