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prepreinstaller_win.exe

The executable prepreinstaller_win.exe has been detected as malware by 10 anti-virus scanners. 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 d23d12h09rr1pi.cloudfront.net.
MD5:
a4f2b57a08515c2cd64927e68e0cd7c4

SHA-1:
3287f8fae21a5741686b2b6ccbb14a52cbd33ae3

SHA-256:
764a55871f4e213c52083a1f5ad124cdb0d10e9cf68463637b3df7fe300beb5c

Scanner detections:
10 / 68

Status:
File is infected by a Virus

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

Analysis date:
11/25/2024 1:55:50 AM UTC  (today)

Scan engine
Detection
Engine version

avast!
Win32:RmnDrp
160518-2

AVG
Win32/Zbot.G
2015.0.4568

Dr.Web
Trojan.DownLoader21.51407
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
Virus.W32/Ramnit.a
18.0.204.0

Microsoft Security Essentials
Threat.Undefined
1.223.850.0

Norman
Win32.Ramnit.N
28.05.2016 15:32:18

File size:
372.9 KB (381,897 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:
5/25/2016 11:58:41 PM

OS version:
5.0

OS bitness:
Win32

Subsystem:
Windows GUI

Linker version:
9.0

CTPH (ssdeep):
6144:EzK+ZmAS0gpMyTghi472f0NW6B0u4ulLeQMLas/8NgZpndAWEQzOm/:EzKkZJqkSq0PuVeQM9UqZpnjEQL/

Entry address:
0x48000

Entry point:
60, E8, 00, 00, 00, 00, 5D, 8B, C5, 81, ED, AD, 5E, 01, 20, 2B, 85, 14, 66, 01, 20, 89, 85, 10, 66, 01, 20, B0, 00, 86, 85, 45, 68, 01, 20, 3C, 01, 0F, 85, BC, 01, 00, 00, 83, BD, 40, 67, 01, 20, 00, 74, 33, 83, BD, 44, 67, 01, 20, 00, 74, 2A, 8B, 85, 10, 66, 01, 20, 2B, 85, 40, 67, 01, 20, 8B, 00, 89, 85, 7D, 67, 01, 20, 8B, 85, 10, 66, 01, 20, 2B, 85, 44, 67, 01, 20, 8B, 00, 89, 85, 81, 67, 01, 20, EB, 61, 83, BD, 48, 67, 01, 20, 00, 74, 58, 8B, 85, 10, 66, 01, 20, 2B, 85, 48, 67, 01, 20, FF, 30, 8D, 85...
 
[+]

Entropy:
6.8103

Packer / compiler:
ASPack v1.08.04

Code size:
164.5 KB (168,448 bytes)

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

http://d23d12h09rr1pi.cloudfront.net/prepreinstaller_win.exe

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