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prepreinstaller_win.exe

The executable prepreinstaller_win.exe has been detected as malware by 8 anti-virus scanners. The file has been seen being downloaded from d3okfro5vh6dqt.cloudfront.net.
MD5:
770ebcedadbc2db58f8be512e3598b34

SHA-1:
b95ea747b60efa8bded259fb3e9982ed32b00534

SHA-256:
51b63ad0784fd8546e577a4b46ef15cd2e8b746ffe9e2eeed796aa131243cd8c

Scanner detections:
8 / 68

Status:
Malware

Explanation:
prepreinstaller_win.exe is infected by a worm that might download, install and run additional malware as well as may spread to other executable files.

Analysis date:
5/2/2024 3:00:11 AM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:RmnDrp
160118-1

Dr.Web
Trojan.DownLoader19.14423
9.0.1.05190

ESET NOD32
Win32/Ramnit.H virus
7.0.302.0

McAfee
Trojan.RDN/Generic Downloader.x
18.0.204.0

Microsoft Security Essentials
Threat.Undefined
1.213.5197.0

Norman
Win32.Ramnit.N
18.01.2016 17:20:53

Reason Heuristics
Adware.Installer
16.2.27.15

VIPRE Antivirus
Threat.4732184
46444

File size:
559.4 KB (572,805 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:
2/1/2016 2:58:15 AM

OS version:
5.1

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
10.0

CTPH (ssdeep):
6144:u+lnzCZqS4v6vSz2yH/InWVBY0C+ghY0kw0RonoD+/g6UGvfO27nmiLK:T5MvSzRHQnB0ghYbonoD+TLnmiu

Entry address:
0x51000

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:
7.0747

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://d3okfro5vh6dqt.cloudfront.net/prepreinstaller_win.exe

Remove prepreinstaller_win.exe - Powered by Reason Core Security
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