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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. 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 d3bt01lx9eiyhq.cloudfront.net.
MD5:
5744e48a65b8dfdd65411d5ec57fd82a

SHA-1:
c5e805ac26950eb24b66499bd51cf6789a22223b

SHA-256:
972487edf142708005656a4c6fccc81d6577cda06e379f790a2a434858aa5f34

Scanner detections:
10 / 68

Status:
File is infected by a Virus

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

Analysis date:
5/7/2024 9:29:26 AM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:RmnDrp
160215-2

Dr.Web
Trojan.DownLoader19.40536
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.E
4.6.5.141

F-Secure
Win32.Ramnit.N
5.15.21

Kaspersky
Virus.Win32.Nimnul
15.0.0.562

McAfee
Virus.W32/Virut.n.gen
18.0.204.0

Microsoft Security Essentials
Threat.Undefined
1.215.654.0

Norman
Win32.Ramnit.N
29.02.2016 03:11:57

File size:
1.1 MB (1,117,133 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:sQHPEx33PI6cLo4weeOc5yw22rVSk/zVHbVp3gi1IahO3vPpDbe:sAPExHPI6deeOC2ESOp3giOaA/FK

Entry address:
0x3F000

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:
7.7914

Packer / compiler:
ASPack v1.08.04

Code size:
97 KB (99,328 bytes)

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

http://d3bt01lx9eiyhq.cloudfront.net/prepreinstaller_win.exe

Remove prepreinstaller_win.exe - Powered by Reason Core Security
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