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prepreinstaller_win.exe

The executable prepreinstaller_win.exe has been detected as malware by 9 anti-virus scanners. This is a setup program which is used to install the application. According to the AV engines that detect this, it is a detection for a file infected by members of the Win32/Ramnit malware family and may drop and load other malware. The file has been seen being downloaded from d17ql6ygi350y.cloudfront.net.
MD5:
6f476876de0b9422555ec48b58dc75ad

SHA-1:
ca29fdf63a752bea299ab0c221c1859171e2f635

SHA-256:
05e4271053f7cfb6f98f7283ce1d9189792b63072673e871d3fa10e20b79c1f7

Scanner detections:
9 / 68

Status:
File is infected by a Virus

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

Analysis date:
4/29/2025 12:16:03 PM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:RmnDrp
160327-1

Dr.Web
Win32.Rmnet.12
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.B!Generic
4.6.5.141

Kaspersky
Virus.Win32.Nimnul
15.0.0.562

McAfee
Trojan.RDN/Generic.grp
18.0.204.0

Microsoft Security Essentials
Threat.Undefined
1.219.1805.0

Norman
Win32.Ramnit.N
02.04.2016 17:35:19

File size:
320.4 KB (328,101 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:
5/5/2016 1:28:52 PM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
12.0

CTPH (ssdeep):
6144:prcdY9vZb4iaeaXvAhaw1Oj8KhE9zgmzfKnCrmd:WOzjbmP8KhE9FNrs

Entry address:
0x48000

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...
 
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Packer / compiler:
ASPack v1.08.04

Code size:
124.5 KB (127,488 bytes)

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

http://d17ql6ygi350y.cloudfront.net/prepreinstaller_win.exe

Remove prepreinstaller_win.exe - Powered by Reason Core Security
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